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It enables the cairo device destruction and proper invalidation of the cairo xcb connection cache at the end, as per what I explained in previous messages. The bottom line is, if you're getting these errors in this toy example, this bug might bite you on Emacs with Cairo XCB at some point. When, who knows, we're on undefined behavior land here.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
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Hi. Thiago.
>>>>> "Thiago" == Thiago Melo <tmdmelo@HIDDEN> writes:
[...]
Thiago> Could you try this: at the top of this code, there are the variables `width' and
Thiago> `height'. Please try setting them to a higher value (eg, 64). then compile and run it
Thiago> again. If you do, let me know if you get an X Error.
--8<---------------cut here---------------start------------->8---
Press C-c to exit.
Iteration: 2/100000X Error of failed request: 143
Major opcode of failed request: 139 ()
Minor opcode of failed request: 10
Serial number of failed request: 13
Current serial number in output stream: 23
--8<---------------cut here---------------end--------------->8---
Best Regards
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 29 May 2023 15:22:34 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 29 11:22:34 2023 Received: from localhost ([127.0.0.1]:58905 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q3ehe-0002Rd-5t for submit <at> debbugs.gnu.org; Mon, 29 May 2023 11:22:34 -0400 Received: from mail-ed1-f49.google.com ([209.85.208.49]:56484) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q3ehb-0002RO-OK for 63589 <at> debbugs.gnu.org; Mon, 29 May 2023 11:22:32 -0400 Received: by mail-ed1-f49.google.com with SMTP id 4fb4d7f45d1cf-5147a478c38so4918862a12.0 for <63589 <at> debbugs.gnu.org>; Mon, 29 May 2023 08:22:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685373746; x=1687965746; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=MZe+t6eF2mLYjW5gWZXHFopyl/31PQKpEzpxvS/KnGs=; b=LEpzdzvQjiPaUA008uVNNfo6iD8k3C8cJhusq5wN64aNYah3Mzvd7gDJnfJ6fAqcIz yjCA0v6EsJVVpo4lIMW9+LGLGfhiZCpys+75c6eV8yH/FUjPhIfviOjnO4E4ibvFrxKe leIGX3Cz8rGUNONgI0j8GGJJRc/qFW7McMr9KskN8Qri7CinylE1qHoI9vDrnkEQODRT 7Oj2peiNTqPoPqkHRS0QyDCxdPcKhIWcTrn9GkMJZwN5+eZAMMtEvIZAKYZbetUxYwoF z80p6IOl2acDSbZ6jL7hFFtBeW7MUO1eyu2PftrSB5TTya9U+2+G/Gg2ZjKZZdCkqQV7 RhXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685373746; x=1687965746; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=MZe+t6eF2mLYjW5gWZXHFopyl/31PQKpEzpxvS/KnGs=; b=LtJy1Ip210kOzOmr0pY7Mjs0bQkaXVP8yalzqxlAfTmLeuK6VdZ2ORRyNgQWZW93Zo 9l5PCV4jRhtB2P7mUSyM5vryBUTHs4nbMezA0R/mdx1gkYF7IhiGUhGdOI7B5O8z0qQG 6gbjKLbBxYfoGaUg5/Dmj8B1PUIYLIeCNhLwwXvP4KP+KTrAuh8GqQx89ffiCRK91vpW nuL4iOztODU35m0Ha2XFl5z3H2RJVIAlx/wVLOzpa8fkCmtOIHg/vvoJb0Ljib8DLrDD W4sdE+v8+qu4JS0mod8DY2PY6vY5rYVvcTK+TpsfISnuHl+3JcbATm+uHHnKfAsyrdQK da/w== X-Gm-Message-State: AC+VfDxqL3nzMEM5BUUU9OlZCwlDvG/tzTNOvBQNw7EblpfD7JW8DE2f D7elKObdKzrHe1TgCjxemCkcJPrTkGIBW2vu75w= X-Google-Smtp-Source: ACHHUZ57ns2MD3ygTW2Kc8xVA+YCdVHXJooOMnmKsz8vcRlXd8rieFvn1Ieo8R3q/04UeY0zBM0F45emxCmjsiZF1SQ= X-Received: by 2002:a05:6402:547:b0:50b:d305:3788 with SMTP id i7-20020a056402054700b0050bd3053788mr52787edx.11.1685373745714; Mon, 29 May 2023 08:22:25 -0700 (PDT) MIME-Version: 1.0 References: <CABpoeKg2+qcZ_STJ6q6qsJ86tPZqtFrf4gQt4ZEfQLUnVKuvuA@HIDDEN> <SJ1PR12MB6363574A03DE1240714F597BA64A9@HIDDEN> In-Reply-To: <SJ1PR12MB6363574A03DE1240714F597BA64A9@HIDDEN> From: Thiago Melo <tmdmelo@HIDDEN> Date: Mon, 29 May 2023 15:21:48 +0000 Message-ID: <CABpoeKgM5UGcbUmhwJP-zTv5DPaaZUKr9P_DDnK+q+634LfgMw@HIDDEN> Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: =?UTF-8?B?YW5kcsOpcyByYW3DrXJleg==?= <rrandresf@HIDDEN> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On Mon, May 29, 2023 at 2:59=E2=80=AFPM andr=C3=A9s ram=C3=ADrez <rrandresf= @hotmail.com> wrote: > Not on my case. I have tested cairo-xcb-bug-2.c three times without the c= rash. After I wrote my last message, I've tested this example with Cairo 1.17 as well. As it is, it doesn't trigger a crash. Could you try this: at the top of this code, there are the variables `width' and `height'. Please try setting them to a higher value (eg, 64). then compile and run it again. If you do, let me know if you get an X Error.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
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Hi. Thiago.
>>>>> "Thiago" == Thiago Melo <tmdmelo@HIDDEN> writes:
[...]
Thiago> I did some tests with Emacs + Cairo 1.17.8 as well. I still got the same errors.
Not on my case. I have tested cairo-xcb-bug-2.c three times without the crash.
Thiago> While good to know if it runs well there, Cairo 1.17 is an experimental pre-release.
Thiago> The latest stable version of Cairo at the moment is 1.16.0, which is the version shipped
Thiago> by Debian based distros. Even Debian Unstable packages Cairo 1.16 at the moment. If
Thiago> Cairo 1.17 received relevant bug fixes, they should have been (hopefully) backported to
Thiago> 1.16 either by the Cairo devs or Debian package maintainers. If we find out this is not
Thiago> the case, then it would be nice to report it upstream.
It could be the case. But We could be wrong also.
Weird the bug is present on your case on debian.
I am on archlinux with up-to-date packages. I remember as part of the
discussion about bug#57364 Po Lu asked me to update cairo. At that time
I compiled the git version. But now archlinux By default packages
1.17. But our distros are the opposite about the packages they publish.
Best Regards
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
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Hi. Eli.
>>>>> "Eli" == Eli Zaretskii <eliz@HIDDEN> writes:
[...]
Eli> Then you can still configure Emacs to be built with Cairo XCB, and Bob's your uncle. The
Eli> code for XCB support was not removed, we just made that configuration optional.
Sure. That solves it on my case.
But I am thinking about the others emacsers who are going to be affected
by this bug#57364 I think I would need to retest this bug again with the rc3
for checking If present. X-forwarding bugs (aka multiple frames on
different DISPLAY) are very difficult to debug. That could be the reason
there are not too much bug reports about this behaviour. On my
particular case I connect to a headless machine by a network cable. So
this bug is triggered. So I think most of emacsers using the '--daemon'
(aka server ) option are using the lucid toolkit with cairo. That was my
reasoning for making You guys aware of the issue with cario and the xlib surface.
Best Regards
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 28 May 2023 21:24:19 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun May 28 17:24:19 2023 Received: from localhost ([127.0.0.1]:54748 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q3NsA-0002ve-J1 for submit <at> debbugs.gnu.org; Sun, 28 May 2023 17:24:19 -0400 Received: from mail-ej1-f43.google.com ([209.85.218.43]:54330) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q3Ns9-0002vS-51 for 63589 <at> debbugs.gnu.org; Sun, 28 May 2023 17:24:17 -0400 Received: by mail-ej1-f43.google.com with SMTP id a640c23a62f3a-96f7bf3cf9eso530825466b.0 for <63589 <at> debbugs.gnu.org>; Sun, 28 May 2023 14:24:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685309051; x=1687901051; h=cc:to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=60XhGKW7vAKz+ivtnYfF2azlZ5gc8R7Ir28D/YnsYR4=; b=F5efMvw8XC9Zu2osUH8gSZnYmo/LNEtrGvt4GfVoZvZ016WX8Cy7tqMWWb2lHPmtdG DBhK47WyZDSxUmmsOc5ApTv6Ws9qvi1On1wRE9kDoq/fbnrSBwnmtWbQUR/x0IAMk+Ws THtQ2VvD+q0m4raxOz6105B+kMVBUDByCvVCBR4YAOTj6ez/t1gIRBcnXnRAg62WTCPF bKRfwtYeRFTGF9CrbStntKKIoJIZ5QNs4fnaPQ7nxtE1MfVVYYRxlbF6cip7Dep9cPSm 0HgXquSgB+pqcbjnUfnFOuPnY4ZI2+SqwSoYMcRFEzvBNJGFvDm1guEqVEn02P/SoBUD P3sQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685309051; x=1687901051; h=cc:to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=60XhGKW7vAKz+ivtnYfF2azlZ5gc8R7Ir28D/YnsYR4=; b=lgfOurgSmAp6jGA0kV+YBlNnpxsm/2OKgNUDwSy0ZTMWSLmnmqAuidrGC+yzMiamPl tyLdIsixtEYETnAwgyq3xVFpd9YfIwNY5cJCaD6fTVUeTxvAVAY7vBfGt1yL8JpzaQ7X 96A8SDlkC52/VSBM6XKKm49LaWMjGFdPJQfx4QMpY+tWvS+MqTkDzgAp02EBvoXF937d iMADMJ7Wicq2zXhDKcnfMRWh8F8h8VV7zE7euQbcZGpkDO0L2+ACaQg5hedCguJYkYv5 bCCE7cy6GVzqn+D1XfyMJbr/2EZjfIewg5hUCFAFChXhAqpt/vJHxEOFLsc9mvXOpLry LyKw== X-Gm-Message-State: AC+VfDy/ypbW4cQDO661QSLHudBUKEi7wanQ1O9zNOHFQb0KIIt3TzDu lFYHyN8j/XN9UBJykDdFe55A7dTZjR+qBpdjVoI= X-Google-Smtp-Source: ACHHUZ7+Rg9KJEqQdphOYzQo3Tzr0meQHZBkN7U0BfkKLcP/r19/KJrNjQZWT7vnAORma8NM2CkjNE/fSKvB1qoOv4Y= X-Received: by 2002:a17:907:2682:b0:973:946d:36b2 with SMTP id bn2-20020a170907268200b00973946d36b2mr8198994ejc.56.1685309051326; Sun, 28 May 2023 14:24:11 -0700 (PDT) MIME-Version: 1.0 From: Thiago Melo <tmdmelo@HIDDEN> Date: Sun, 28 May 2023 21:23:33 +0000 Message-ID: <CABpoeKg2+qcZ_STJ6q6qsJ86tPZqtFrf4gQt4ZEfQLUnVKuvuA@HIDDEN> Subject: bug#63589: 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: rrandresf@HIDDEN Content-Type: multipart/mixed; boundary="0000000000005770c205fcc79782" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --0000000000005770c205fcc79782 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi Andr=C3=A9s. Andr=C3=A9s Ram=C3=ADrez <rrandresf@HIDDEN> writes: > My cairo version is 1.17.8. I did some tests with Emacs + Cairo 1.17.8 as well. I still got the same er= rors. While good to know if it runs well there, Cairo 1.17 is an experimental pre-release. The latest stable version of Cairo at the moment is 1.16.0, which is the version shipped by Debian based distros. Even Debian Unstable packages Cairo 1.16 at the moment. If Cairo 1.17 received relevant bug fixes, they should have been (hopefully) backported to 1.16 either by the Cairo devs or Debian package maintainers. If we find out this is not the case, then it would be nice to report it upstream. > I have tested > cairo-xcb-bug.c > > And On my case. It never crashes. Thanks. In the meantime, I wrote a headless, non-interactive and slightly improved version of this code. It should iterate faster and trigger the bug more reliably. I've attached it here. Needless to say, but please take a careful look at the code before compiling and running it. Then, it would be nice if you let us know if it crashes on you. --0000000000005770c205fcc79782 Content-Type: text/x-csrc; charset="US-ASCII"; name="cairo-xcb-bug-2.c" Content-Disposition: attachment; filename="cairo-xcb-bug-2.c" Content-Transfer-Encoding: base64 Content-ID: <f_li7wzs0h0> X-Attachment-Id: f_li7wzs0h0 LyogRXhhbXBsZSBwcm9ncmFtIHRvIHRyaWdnZXIgcmVmZXJlbmNlIGJ1Z3MgaW4gY2Fpcm8teGNi CiAgIHdoZW4gcmVvcGVuaW5nIHRoZSBkaXNwbGF5LgogICBUaGlzIHByb2dyYW0gc2hvdWxkIGNy YXNoIHdpdGggdGhlIGZvbGxvd2luZyBlcnJvciBtZXNzYWdlOgogICBgYGAKICAgY2Fpcm8teGNi LXNjcmVlbi5jOjIxOTogX2dldF9zY3JlZW5faW5kZXg6IEFzc2VydGlvbiBgISJyZWFjaGVkIicg ZmFpbGVkLgogICBgYGAKICAgQ29tcGlsZSB3aXRoOgogICBnY2MgLVdhbGwgLW8gY2Fpcm8teGNi LWJ1Zy0yIGNhaXJvLXhjYi1idWctMi5jIGBwa2ctY29uZmlnIC0tY2ZsYWdzIC0tbGlicyBjYWly by14Y2IgeDExLXhjYmAgLU8wIC1nMwoqLwoKI2luY2x1ZGUgPHN0ZGxpYi5oPgojaW5jbHVkZSA8 c3RkaW8uaD4KI2luY2x1ZGUgPHVuaXN0ZC5oPgoKI2luY2x1ZGUgPHhjYi94Y2IuaD4KI2luY2x1 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bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 28 May 2023 05:55:22 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun May 28 01:55:21 2023 Received: from localhost ([127.0.0.1]:53014 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q39NB-0001TT-K0 for submit <at> debbugs.gnu.org; Sun, 28 May 2023 01:55:21 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36744) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q39N8-0001TD-PM for 63589 <at> debbugs.gnu.org; Sun, 28 May 2023 01:55:19 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q39N3-0004Fz-2i; Sun, 28 May 2023 01:55:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-version:References:Subject:In-Reply-To:To:From: Date; bh=aOBbFxxUO504FN5/kOMR8RVyalH+0+M4nuk7ZsyriVM=; b=i9cEBHeOsdDSxuFZbdhR Ts+jOjr/9Or6fuijGQ68323puLmUppBZ/FK8qnmUHh63c4qAyIGkIcJNinWb6fHz58stwQepL8JAS MEOR/ZQC7Ed3BE3fG6AjjdHYPvGfDKkkIP+NpXgBhf+ksRdsIZW+QEgAGPZ9KqNqfnDfGgBuDovw8 iVz30GASAJ9ukKZEHd57D9bR5xDVHlcknGmtgY1NjhR8eCvYI2tHSuPdfekbHe8Q5ggz92lU6VEl7 yZpTw3/ky6U8o0daqoct3efc7ueT4tC33JpQ5qxVzqp2fSu4iKRL9d1NjkoBCMAIKVzwdsfTxtZnN m7bhrLOt7/kBCw==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q39N1-0002KJ-VB; Sun, 28 May 2023 01:55:12 -0400 Date: Sun, 28 May 2023 08:55:48 +0300 Message-Id: <83leh9hue3.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: =?iso-8859-1?Q?Andr=E9s_Ram=EDrez?= <rrandresf@HIDDEN> In-Reply-To: <SJ1PR12MB636318BBC5601FEEC059D076A6459@HIDDEN> (message from =?iso-8859-1?Q?Andr=E9s_Ram=EDrez?= on Sun, 28 May 2023 03:34:45 +0000) Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <SJ1PR12MB636318BBC5601FEEC059D076A6459@HIDDEN> MIME-version: 1.0 Content-type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Andrés Ramírez <rrandresf@HIDDEN> > Date: Sun, 28 May 2023 03:34:45 +0000 > > Hi. Thiago. > > My cairo version is 1.17.8. > > I have tested > cairo-xcb-bug.c > > And On my case. It never crashes. Then you can still configure Emacs to be built with Cairo XCB, and Bob's your uncle. The code for XCB support was not removed, we just made that configuration optional.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Thiago. My cairo version is 1.17.8. I have tested cairo-xcb-bug.c And On my case. It never crashes. Best Regards
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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So It means now it defaults to cairo-xlib surface. Does it means this bug is going to happen again? --8<---------------cut here---------------start------------->8--- https://debbugs.gnu.org/cgi/bugreport.cgi?bug=57364 --8<---------------cut here---------------end--------------->8--- Best Regards
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 26 May 2023 08:34:05 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 26 04:34:05 2023 Received: from localhost ([127.0.0.1]:48770 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q2Sth-00029z-9f for submit <at> debbugs.gnu.org; Fri, 26 May 2023 04:34:05 -0400 Received: from eggs.gnu.org ([209.51.188.92]:52128) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q2Ste-00029S-Vr for 63589 <at> debbugs.gnu.org; Fri, 26 May 2023 04:34:03 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2StY-0001b3-WD; Fri, 26 May 2023 04:33:57 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=1GsiPhWUsAgZWFMME+1jPvMEv1mVViN0aX0NUMXNloo=; b=kgMCbkgVfKTv tnrPXZ+fg9RORdbDeUyhGLyRriC1qBeLTZVG8msJA7XNGbAQ6BdkprKrRvCeI0ZMayI2ZT6tdkBXI KHfLfu7DoyN7Uvia8Zzjzg09mebiluMDAE2WD/6EzFzoM42pgY+GoLAFYpNckqEvnIN2XNIT1CRvG nvzwILz1xMWWy7J8jNqL3HlYxaIZP05Tj+zWG8hYMkgwhrdNe5EKaLpBsNcDHtDcamZ+vZOfCY5V0 qJgujSAnvJZmw0mjsSVzb1Sbo+QivkEou59z/JD0O7rxfklEQ4HAVZZ7W5lmjqwXrtWt14Gw3awno QE4ER1i3YO1msHwFgghEyw==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2StX-0007Gt-Vr; Fri, 26 May 2023 04:33:56 -0400 Date: Fri, 26 May 2023 11:34:20 +0300 Message-Id: <83jzwvlcdv.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <875y8fr076.fsf@HIDDEN> (message from Po Lu on Fri, 26 May 2023 16:01:01 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <874jo0u2bg.fsf@HIDDEN> <83cz2omyqr.fsf@HIDDEN> <87a5xsrle0.fsf@HIDDEN> <83sfbjlj12.fsf@HIDDEN> <875y8fr076.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Fri, 26 May 2023 16:01:01 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Why is this bad? It isn't clean, I agree, but what problems would > > this cause to Emacs and the user, and why is this worse than the > > current situation where Emacs crashes? > > Because if the connection to the other X server becomes very slow, or > abruptly disappears, Emacs could lock up or crash. Sorry, I don't understand: how is the fact that we don't close the connection related to other connections' becoming very slow, and why would that cause us to lock up? In any case, it sounds like this possibility is more rare than the situation where the user repeatedly visits files one by one via emacsclient, each time using "C-x C-c" to finish, which closes the connection. So it sounds like not deleting the terminal is an improvement, isn't it? > > But that evidently happens already with other toolkits, doesn't it? > > So I guess these forced deletions are very rarely used. > > Connecting Emacs to multiple displays is already rarely used. But we've > been hearing people complain about such crashes on other toolkits a lot, > so it is certainly an important situation to consider. I agree. But if Cauro-XCB behaves like those other toolkits, then we are not worse in this respect than we already are with those other toolkits. So again, this sounds like an improvement.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 57ce5956fe4767cf031fbf0e9a6fe0ca; Fri, 26 May 2023 08:01:19 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83sfbjlj12.fsf@HIDDEN> (Eli Zaretskii's message of "Fri, 26 May 2023 09:10:49 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <874jo0u2bg.fsf@HIDDEN> <83cz2omyqr.fsf@HIDDEN> <87a5xsrle0.fsf@HIDDEN> <83sfbjlj12.fsf@HIDDEN> Date: Fri, 26 May 2023 16:01:01 +0800 Message-ID: <875y8fr076.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 972 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Why is this bad? It isn't clean, I agree, but what problems would > this cause to Emacs and the user, and why is this worse than the > current situation where Emacs crashes? Because if the connection to the other X server becomes very slow, or abruptly disappears, Emacs could lock up or crash. > But that evidently happens already with other toolkits, doesn't it? > So I guess these forced deletions are very rarely used. Connecting Emacs to multiple displays is already rarely used. But we've been hearing people complain about such crashes on other toolkits a lot, so it is certainly an important situation to consider. > (Btw, I hope I understood correctly what you mean by "former" and > "latter"; if not, please tell explicitly what they are, since the > citations above don't include any two cases to which this could > allude, so I needed to guess.) You understood correctly. I'm sorry I was not sufficiently clear.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 26 May 2023 06:13:57 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 26 02:13:57 2023 Received: from localhost ([127.0.0.1]:48628 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q2Qi5-0006MZ-J5 for submit <at> debbugs.gnu.org; Fri, 26 May 2023 02:13:57 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43846) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q2Qi4-0006MM-7Q for 63589 <at> debbugs.gnu.org; Fri, 26 May 2023 02:13:56 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2Qhz-00079u-0R; Fri, 26 May 2023 02:13:51 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=rEYA6AIG8y/Kph/zb+1+DDbrHHgeYG8z5MA1W02kBn8=; b=Epnhk6El7MEv lSxbmeEgN/io1DXYRl98xhP8Fkq6+cio91wD7rFDYsv77InmkFi+Uk6CBXtonFaIFWvUmpKGBTBYG 6t1+XyqC2h9TT3sq7TD3FXm1bkYEN+KwcU84p4zT0cxdn6EioQGpsVn3e1auaPDMXA6D3yeTClK3u uy37HacVMTL/V1joZHdlkKINMHkrjrw6ldrCIKcl+dGz5O87dDBl9hRaDDDa9G98LoRw1Dtc4IxQt i4wCeQDkglzC3lOQOTrriIvNLARGFPzENJE8V+toq1QfNIDnqM5IcMnjtxTsg4cYhe+uX4/Wmkh+5 wJT1uKVHklzYdodYSmUDYw==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2Qhy-0007Sd-G2; Fri, 26 May 2023 02:13:50 -0400 Date: Fri, 26 May 2023 09:14:22 +0300 Message-Id: <83r0r3liv5.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87ilcfrjp2.fsf@HIDDEN> (message from Po Lu on Fri, 26 May 2023 08:59:53 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN> <878rdcu2el.fsf@HIDDEN> <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> <87ilcfrjp2.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 63589 <at> debbugs.gnu.org > Date: Fri, 26 May 2023 08:59:53 +0800 > > Or let's just disable this by default, which is really the better > solution until some people get their act together and fix this > misdesign. Disabling this by default doesn't mean we shouldn't strive for making this non-default configuration less buggy. It just lowers the priority of those bugs, but it doesn't make them go away from our POV. So let's try to improve the situation with this configuration, even though we already decided to make it OFF by default.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 26 May 2023 06:10:39 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 26 02:10:39 2023 Received: from localhost ([127.0.0.1]:48623 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q2Qet-0006I1-1r for submit <at> debbugs.gnu.org; Fri, 26 May 2023 02:10:39 -0400 Received: from eggs.gnu.org ([209.51.188.92]:51802) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q2Qer-0006Ho-6k for 63589 <at> debbugs.gnu.org; Fri, 26 May 2023 02:10:37 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2Qek-0006gP-7W; Fri, 26 May 2023 02:10:31 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=ZPEDX2XupWIKLrcblDf5y2HlA5z4CIVMv5/ZWTlgRzE=; b=lZgscHzNDWRL r4KSKVR3l532E05zON8QhuIfzix4aXVqjDtboVnqrP3jm8XfYwjh/hd3e3G1WZgsmVV+lO5Dze48M iS27Bm+TpXQdOOGdTJ3MX97WiTV1ctVXy4KgBZmTY+32aH9jFoDGUGHp4f1zslj9FTlWYYh/2d4nF 7y4HljXTJCZ4fdzIaz+Pcnxn20hfpk5RT65FHJDWFS4PtD5wLUZP851AXw6dJiYMdCeweJZ3MrlNZ P0OonEzw9S3CiNN4VT2TlcSurGDPZgYalik9yGtRc/cNrVLtkK0NlcMp+4HB9XhW3y8k1jKX1WQ// 0X29nojnhvzcawy0LiPuDg==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q2QeY-0005KI-1o; Fri, 26 May 2023 02:10:24 -0400 Date: Fri, 26 May 2023 09:10:49 +0300 Message-Id: <83sfbjlj12.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87a5xsrle0.fsf@HIDDEN> (message from Po Lu on Fri, 26 May 2023 08:23:19 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <874jo0u2bg.fsf@HIDDEN> <83cz2omyqr.fsf@HIDDEN> <87a5xsrle0.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Fri, 26 May 2023 08:23:19 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > What bad things can happen (in the cairo-xcb build) if we don't delete > > the terminal in all these cases? > > In the former case, Emacs will never be able to close a display. Why is this bad? It isn't clean, I agree, but what problems would this cause to Emacs and the user, and why is this worse than the current situation where Emacs crashes? > In the latter case, the display connection is forcibly deleted, and the > same crash happens again. But that evidently happens already with other toolkits, doesn't it? So I guess these forced deletions are very rarely used. (Btw, I hope I understood correctly what you mean by "former" and "latter"; if not, please tell explicitly what they are, since the citations above don't include any two cases to which this could allude, so I needed to guess.) > > We did. > > OK, I will install this soon. Thanks.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 26 May 2023 05:07:03 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Fri May 26 01:07:03 2023 Received: from localhost ([127.0.0.1]:48592 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q2PfL-00042N-Ef for submit <at> debbugs.gnu.org; Fri, 26 May 2023 01:07:03 -0400 Received: from mail-ej1-f43.google.com ([209.85.218.43]:49366) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q2PfI-00040f-W6 for 63589 <at> debbugs.gnu.org; Fri, 26 May 2023 01:07:01 -0400 Received: by mail-ej1-f43.google.com with SMTP id a640c23a62f3a-96fb45a5258so50624666b.2 for <63589 <at> debbugs.gnu.org>; Thu, 25 May 2023 22:07:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685077615; x=1687669615; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=4jxoRXc1CYcD00fB2NGLzdqI1qdRT+jxEN03SuasiIU=; b=jTAgLj05gD1qepiXNupCvcEYSQSM1NPCaHiNb19UD/vmiHcXkziHIrKAVo6KbRRNBp a/nmmZJiP1Vh5FO8bIXXQlm6F77/QY6cIarmdmpab+Sys+3h6nPFpiYNN10VIpgU2DqD U+h2jyJKry7G05Xsdo5ZT0qR+vqNEphfY25sl56Lr2nqoYjThLJnv2m2FbnzYD/br0kJ 2AoCK93ZKHp68JA0dgIZl12iEEYJDtP3gIpLS/AIWl4shNAxqsdMazYfTB3evUI/4OLp Ti8v/EtAhWXcFOwSz2t6BpE3VDfe0Q4sM/iOgAu7148mmD2mIoKDVBHWtpcwSlrgDX3t okYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685077615; x=1687669615; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=4jxoRXc1CYcD00fB2NGLzdqI1qdRT+jxEN03SuasiIU=; b=a/k5Wq8WmpMp43MBb9wBlq1QrzHW/q7L+ShGjZzxzA/jNySKblrV4q2TJijVOl80vu fPWCfiEfrmL9zkUVFp+n3DClbMXPsH3Yz3wiHSSjWCItFNVSRzUpnWpKiDRMd8D5IZ53 +HfmqaHQoegx/+ej9q8F7oup5ognC2i4I4NbT4PgYyV/N2TeOa66MenxN/BR5FBRvCMV CwNHmEPXgh0oc6nXwNbEHa93pF4xUT+WSjqBLmxDoK/QZMlU1GCdLBqsJ544aLb5UCCQ 0WFgQsaKcTFEkJizV8WYhaLxITq2qRSTg81I82mF5ldyUDK8tYV4T6cQ18PUJyOLkJK8 2YhA== X-Gm-Message-State: AC+VfDw4cuI3DFbNGyusLoZCakELh8fANYCeeVEAFEbFX5UEvBC9hmXH zwZBI7x4KjbB7Ph0Z3BhgWxG+77BoLVv3ke3xuQ= X-Google-Smtp-Source: ACHHUZ4mBE8vet02J8RtU+jcWt6hnPCGEVQyMVCP4syWdb1DgNhsupr4m+jWJBBgBe1r3Z+gT6a4lsqC/f3jL9ic8Ss= X-Received: by 2002:a17:906:ee83:b0:94f:2a13:4e01 with SMTP id wt3-20020a170906ee8300b0094f2a134e01mr719781ejb.74.1685077614856; Thu, 25 May 2023 22:06:54 -0700 (PDT) MIME-Version: 1.0 References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN> <878rdcu2el.fsf@HIDDEN> <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> <87ilcfrjp2.fsf@HIDDEN> In-Reply-To: <87ilcfrjp2.fsf@HIDDEN> From: Thiago Melo <tmdmelo@HIDDEN> Date: Fri, 26 May 2023 05:06:16 +0000 Message-ID: <CABpoeKjmgvn56nqUEkvZSCWW4rn6pGipaR=FD82j0XZh7AvRRQ@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: Po Lu <luangruo@HIDDEN> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On Fri, May 26, 2023 at 1:00=E2=80=AFAM Po Lu <luangruo@HIDDEN> wrote: > What version of Cairo did you test? 1.16.0, on Debian. > Or let's just disable this by default, which is really the better > solution until some people get their act together and fix this > misdesign. I'm also in agreement about leaving this backend as an opt-in for now. Like Eli, I just wanted to address the crash itself and what can be fixed on the Emacs side.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 49089c42d3c5ae1a5e2ef1b3059df785; Fri, 26 May 2023 00:59:59 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Thiago Melo <tmdmelo@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> (Thiago Melo's message of "Thu, 25 May 2023 14:06:24 +0000") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN> <878rdcu2el.fsf@HIDDEN> <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> Date: Fri, 26 May 2023 08:59:53 +0800 Message-ID: <87ilcfrjp2.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 2001 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Thiago Melo <tmdmelo@HIDDEN> writes: > I'm not sure if you tested the last patch I sent as it is, or if you > previously did assert tests on your own with the device returned by > `cairo_xcb_surface_create' at `x_begin_cr_clip'. Assuming it's the > latter, then please pay close attention at this change I made to the > code: > > > if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS) > eassert (FRAME_DISPLAY_INFO (f)->cairo_device > == cairo_surface_get_device (surface)); > > > Notice that, before I do the assert, I first check if the surface > returned by `cairo_xcb_surface_create' is good. One thing that I > observed when debugging is that, every time a new frame is created, > this part of the code is hit 3 times. The first time, the surface it > returns is always a bad one, which might even have some random garbage > value for the device. The other 2 times, it's a proper xcb surface, > and they always have the same device in common. Same thing with > subsequent calls, it's always the same cairo-xcb device. Similar > behavior when I make tooltips appear. I've attached a gdb session log > showing it. What version of Cairo did you test? >> If we are going down this route, I think we should save each distinct >> device returned by `cairo_surface_get_device', and delete each of them >> upon the terminal being deleted. >> As I explained, I saw that function return different devices for the >> same XCB connection, which is definitely a problem with Cairo. > > Considering my observation above, it doesn't seem that different > _valid_ devices are being created. But if that is really the case and > I'm missing it, then yes, we make a dynamic list of devices instead. > Consider also that, with the changes I proposed, a device reference is > kept from the beginning, which might influence the results here. Or let's just disable this by default, which is really the better solution until some people get their act together and fix this misdesign.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 024f7ce04cef885ab13933067301a331; Fri, 26 May 2023 00:23:28 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83cz2omyqr.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 25 May 2023 14:33:48 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <874jo0u2bg.fsf@HIDDEN> <83cz2omyqr.fsf@HIDDEN> Date: Fri, 26 May 2023 08:23:19 +0800 Message-ID: <87a5xsrle0.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 352 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > What bad things can happen (in the cairo-xcb build) if we don't delete > the terminal in all these cases? In the former case, Emacs will never be able to close a display. In the latter case, the display connection is forcibly deleted, and the same crash happens again. > We did. OK, I will install this soon.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 25 May 2023 18:17:58 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu May 25 14:17:58 2023 Received: from localhost ([127.0.0.1]:48068 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q2FXC-0005iN-3e for submit <at> debbugs.gnu.org; Thu, 25 May 2023 14:17:58 -0400 Received: from mail-ed1-f52.google.com ([209.85.208.52]:49334) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q2FX9-0005i7-L5 for 63589 <at> debbugs.gnu.org; Thu, 25 May 2023 14:17:56 -0400 Received: by mail-ed1-f52.google.com with SMTP id 4fb4d7f45d1cf-510f525e06cso5040463a12.2 for <63589 <at> debbugs.gnu.org>; Thu, 25 May 2023 11:17:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685038670; x=1687630670; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=wjAG4jIiRCD6+JYK9DXXA/YF9EYvdKGWXurbHKSssao=; b=OrY/1eYlzdcchaMgkQ/510F4ylKY6rncQI5iqd+pTN3+wajDZKhRmiLHKssu3A6mgn wGSwVETIVqM3JDAHsP0bphmUm1MfhH/pKlZYxWCjHThOS7fTeucNcfPo0O63Hj+5FE8Z 943a3u6Zt2+Vi16fT4esOYijwRNTkvExsoXNIH2EFaCzsdcguWB62eKXuyCeeWn4wCQQ X1mrVSAvCJ/+NQ1EYbtOuYKe57s2+hvrxerQwPNIS/WCCS1b4V9NlguK81Cyzu+PDDwJ c/6MIHIDFcazBfGwcoi8kZCpD2YV7uAM2t38KrZqjcnEmp9jQsFPnZ8kRnDSTSsiVxxI 2GnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685038670; x=1687630670; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wjAG4jIiRCD6+JYK9DXXA/YF9EYvdKGWXurbHKSssao=; b=dqK8+ITQ/O2aVuP2YIjLUh43GQSEtXY5dVrGzB076yJh/TVeKxuiKorGarpzVDpPUL hRwUQWVHJXXjpz3wWe1nk+nAR2WmUGt7DcpdK7l5jOVr/0y0RccFTFC8/ZqsmCZe9b/n fyv2xxwp1mok3DXHTnkDJGEmkT3rAfUCXAbQwRBNLN62BJi47YRmmZCsT9imLRp8mW61 LpjDTwNiW68SaaNkX9fI/K9cBNUYxRYFCsi5qZfZstWNEsSG0LvHPbEGdAeguC/Tzv4P D2KdkuNHKFpbBdctYkWrEuThNTO+euEdxKSlzXq7rnGflD6+AIdzoDy0QrTFdMQJvQqs J9aA== X-Gm-Message-State: AC+VfDwCj/1GCxRzOxwg+3INfmgDUWOVcNJz6912ucC5mB1f5+9anpXE 8xISSd+n9/PlyID5FUBaoy0QyaHIluBHU24Rn7o= X-Google-Smtp-Source: ACHHUZ7t0uV05+VXcwi0CgjI2kgYBD4s4DOcnxYTpDO7AQsnqtGRe3NzHb6D4tDgGdBSySvLAtha4ln/QMNIl33gtAo= X-Received: by 2002:a17:906:dc8e:b0:959:6fb2:1c3b with SMTP id cs14-20020a170906dc8e00b009596fb21c3bmr2543782ejc.39.1685038669601; Thu, 25 May 2023 11:17:49 -0700 (PDT) MIME-Version: 1.0 References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN> <878rdcu2el.fsf@HIDDEN> <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> In-Reply-To: <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN> From: Thiago Melo <tmdmelo@HIDDEN> Date: Thu, 25 May 2023 18:17:11 +0000 Message-ID: <CABpoeKjhGV4e_FLJ=NWQ-2w9v-mDvR1pTcrWKcwcaJ0vupkAMA@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: Po Lu <luangruo@HIDDEN> Content-Type: multipart/mixed; boundary="00000000000055d01205fc88a393" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --00000000000055d01205fc88a393 Content-Type: text/plain; charset="UTF-8" Sorry, my last patch had a misplaced `#if' block at xterm.h, that I only noticed after trying to build emacs with gtk. I've attached an updated version here. --00000000000055d01205fc88a393 Content-Type: text/x-patch; charset="US-ASCII"; name="bugfix-63589-v4.patch" Content-Disposition: attachment; filename="bugfix-63589-v4.patch" Content-Transfer-Encoding: base64 Content-ID: <f_li3gf6370> X-Attachment-Id: f_li3gf6370 RnJvbSBhMGMxYzhjMWM4NWFlZTA4MTBjNDJiODcyMWUzYWFkMGZjOTUwMzJhIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBUaGlhZ28gTWVsbyA8dG1kbWVsb0BnbWFpbC5jb20+CkRhdGU6 IFRodSwgMjUgTWF5IDIwMjMgMTk6MTU6MzkgKzAyMDAKU3ViamVjdDogW1BBVENIXSBGaXggQnVn IzYzNTg5LgoKLS0tCiBzcmMveHRlcm0uYyB8IDM3ICsrKysrKysrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysKIHNyYy94dGVybS5oIHwgIDYgKysrKysrCiAyIGZpbGVzIGNoYW5nZWQsIDQz IGluc2VydGlvbnMoKykKCmRpZmYgLS1naXQgYS9zcmMveHRlcm0uYyBiL3NyYy94dGVybS5jCmlu ZGV4IGU5ODFhMzYuLmQzNWIzNWMgMTAwNjQ0Ci0tLSBhL3NyYy94dGVybS5jCisrKyBiL3NyYy94 dGVybS5jCkBAIC01ODA2LDEwICs1ODA2LDE1IEBAIHhfYmVnaW5fY3JfY2xpcCAoc3RydWN0IGZy YW1lICpmLCBHQyBnYykKICAgICAgIGNhaXJvX3N1cmZhY2VfdCAqc3VyZmFjZTsKICNpZmRlZiBV U0VfQ0FJUk9fWENCX1NVUkZBQ0UKICAgICAgIGlmIChGUkFNRV9ESVNQTEFZX0lORk8gKGYpLT54 Y2JfdmlzdWFsKQorCXsKIAlzdXJmYWNlID0gY2Fpcm9feGNiX3N1cmZhY2VfY3JlYXRlIChGUkFN RV9ESVNQTEFZX0lORk8gKGYpLT54Y2JfY29ubmVjdGlvbiwKIAkJCQkJICAgICh4Y2JfZHJhd2Fi bGVfdCkgRlJBTUVfWF9SQVdfRFJBV0FCTEUgKGYpLAogCQkJCQkgICAgRlJBTUVfRElTUExBWV9J TkZPIChmKS0+eGNiX3Zpc3VhbCwKIAkJCQkJICAgIHdpZHRoLCBoZWlnaHQpOworCWlmIChjYWly b19zdXJmYWNlX3N0YXR1cyAoc3VyZmFjZSkgPT0gQ0FJUk9fU1RBVFVTX1NVQ0NFU1MpCisJICBl YXNzZXJ0IChGUkFNRV9ESVNQTEFZX0lORk8gKGYpLT5jYWlyb19kZXZpY2UKKwkJICAgPT0gY2Fp cm9fc3VyZmFjZV9nZXRfZGV2aWNlIChzdXJmYWNlKSk7CisJfQogICAgICAgZWxzZQogI2VuZGlm CiAJc3VyZmFjZSA9IGNhaXJvX3hsaWJfc3VyZmFjZV9jcmVhdGUgKEZSQU1FX1hfRElTUExBWSAo ZiksCkBAIC0zMDUwNCw2ICszMDUwOSwyNyBAQCAjZGVmaW5lIE5VTV9BUkdWIDEwCiAKICAgdW5i bG9ja19pbnB1dCAoKTsKIAorI2lmZGVmIFVTRV9DQUlST19YQ0JfU1VSRkFDRQorICAvKiBTdG9y ZSByZWZlcmVuY2UgdG8gdGhlIGNhaXJvIGRldmljZSBmb3IgdGhpcyBkaXNwbGF5LCB0byBlbnN1 cmUKKyAgICAgdGhhdCBpdCBpcyBkZXN0cm95ZWQgYmVmb3JlIGNsb3NpbmcgY29ubmVjdGlvbiAo QnVnIzYzNTg5KS4KKyAgICAgRm9yIHRoYXQsIHdlIGNyZWF0ZSBhIGRyYXdhYmxlLCBhbiBYQ0Ig c3VyZmFjZSBmb3IgdGhhdCBkcmF3YWJsZSwKKyAgICAgYW5kIHRoZW4gd2UgZ2V0IHRoZSBkZXZp Y2UgcmVmZXJlbmNlIGZyb20gdGhlcmUuICAqLworICBQaXhtYXAgZHJhd2FibGU7CisgIGNhaXJv X3N1cmZhY2VfdCAqc3VyZmFjZTsKKworICBkcmF3YWJsZSA9IFhDcmVhdGVQaXhtYXAgKGRweWlu Zm8tPmRpc3BsYXksIGRweWluZm8tPnJvb3Rfd2luZG93LAorCQkJICAgIDEsIDEsIGRweWluZm8t Pm5fcGxhbmVzKTsKKyAgc3VyZmFjZSA9IGNhaXJvX3hjYl9zdXJmYWNlX2NyZWF0ZSAoZHB5aW5m by0+eGNiX2Nvbm5lY3Rpb24sIGRyYXdhYmxlLAorCQkJCSAgICAgIGRweWluZm8tPnhjYl92aXN1 YWwsIDEsIDEpOworCisgIGlmIChjYWlyb19zdXJmYWNlX3N0YXR1cyAoc3VyZmFjZSkgPT0gQ0FJ Uk9fU1RBVFVTX1NVQ0NFU1MpCisgICAgeworICAgICAgZHB5aW5mby0+Y2Fpcm9fZGV2aWNlID0g Y2Fpcm9fZGV2aWNlX3JlZmVyZW5jZSAoY2Fpcm9fc3VyZmFjZV9nZXRfZGV2aWNlIChzdXJmYWNl KSk7CisgICAgICBjYWlyb19zdXJmYWNlX2Rlc3Ryb3kgKHN1cmZhY2UpOworICAgIH0KKyAgWEZy ZWVQaXhtYXAgKGRweWluZm8tPmRpc3BsYXksIGRyYXdhYmxlKTsKKyNlbmRpZgorCiAjaWYgZGVm aW5lZCBIQVZFX1hGSVhFUyAmJiBkZWZpbmVkIFVTRV9YQ0IKICAgU0FGRV9GUkVFICgpOwogI2Vu ZGlmCkBAIC0zMDc4Myw2ICszMDgwOSwxNyBAQCB4X2RlbGV0ZV90ZXJtaW5hbCAoc3RydWN0IHRl cm1pbmFsICp0ZXJtaW5hbCkKICAgICB4aW1fY2xvc2VfZHB5IChkcHlpbmZvKTsKICNlbmRpZgog CisjaWZkZWYgVVNFX0NBSVJPX1hDQl9TVVJGQUNFCisgIC8qIEVuc3VyZSB0aGF0IHRoZSBjYWly byBkZXZpY2UgaXMgZGVzdHJveWVkIGJlZm9yZSBjbG9zaW5nCisgICAgIGNvbm5lY3Rpb24gKEJ1 ZyM2MzU4OSkuICAqLworICBpZiAoZHB5aW5mby0+Y2Fpcm9fZGV2aWNlKQorICAgIHsKKyAgICAg IGNhaXJvX2RldmljZV9maW5pc2ggKGRweWluZm8tPmNhaXJvX2RldmljZSk7CisgICAgICBjYWly b19kZXZpY2VfZGVzdHJveSAoZHB5aW5mby0+Y2Fpcm9fZGV2aWNlKTsKKyAgICAgIGRweWluZm8t PmNhaXJvX2RldmljZSA9IE5VTEw7CisgICAgfQorI2VuZGlmCisKICAgLyogTm9ybWFsbHksIHRo ZSBkaXNwbGF5IGlzIGF2YWlsYWJsZS4uLiAgKi8KICAgaWYgKGRweWluZm8tPmRpc3BsYXkpCiAg ICAgewpkaWZmIC0tZ2l0IGEvc3JjL3h0ZXJtLmggYi9zcmMveHRlcm0uaAppbmRleCA4ODM0MzQ2 Li40NzkzOTA4IDEwMDY0NAotLS0gYS9zcmMveHRlcm0uaAorKysgYi9zcmMveHRlcm0uaApAQCAt ODg0LDYgKzg4NCwxMiBAQCAjZGVmaW5lIFhfSU5WQUxJRF9XSU5ET1cgMHhmZmZmZmZmZgogICAg ICBzZXJ2ZXJfdGltZV9tb25vdG9uaWNfcCB3aWxsIGJlIHRydWUpLiAgKi8KICAgaW50X2Zhc3Q2 NF90IHNlcnZlcl90aW1lX29mZnNldDsKICNlbmRpZgorI2lmIGRlZmluZWQgVVNFX1hDQiAmJiBk ZWZpbmVkIFVTRV9DQUlST19YQ0IKKyAgLyogQ2Fpcm8gZGV2aWNlIGFzc29jaWF0ZWQgd2l0aCBj YWlybyBzdXJmYWNlcyBpbiB0aGlzIGRpc3BsYXkuCisgICAgIFJlcXVpcmVkIGZvciBwcm9wZXIg Y2xlYW51cCBiZWZvcmUgY2xvc2luZyBkaXNwbGF5IGNvbm5lY3Rpb24KKyAgICAgaW4gY2Fpcm8t eGNiIGJ1aWxkcy4gICovCisgIGNhaXJvX2RldmljZV90ICpjYWlyb19kZXZpY2U7CisjZW5kaWYK IH07CiAKICNpZmRlZiBIQVZFX1hfSTE4TgotLSAKMi4zOS4yCgo= --00000000000055d01205fc88a393--
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Thu, 25 May 2023 14:06:24 +0000
Message-ID: <CABpoeKjEq7baqgU+_KUfM7LjpSHY3_iZ=z34k5LcKwegFLm=Zg@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Po Lu <luangruo@HIDDEN>
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On Thu, May 25, 2023 at 10:33=E2=80=AFAM Po Lu <luangruo@HIDDEN> wrote:
> Did you build with checking?
Yes. Here are the configure options I've been using to test it:
./configure --without-all --with-x-toolkit=3Dno
--without-compress-install --without-tree-sitter --without-json
--with-cairo --enable-checking=3D'yes,glyphs'
--enable-check-lisp-object-type CFLAGS=3D'-O0 -g3'
Let me know if there are relevant settings differences.
> Because when I last tried, this assert
> triggered with the second frame created.
I'm not sure if you tested the last patch I sent as it is, or if you
previously did assert tests on your own with the device returned by
`cairo_xcb_surface_create' at `x_begin_cr_clip'. Assuming it's the
latter, then please pay close attention at this change I made to the
code:
if (cairo_surface_status (surface) =3D=3D CAIRO_STATUS_SUCCESS)
eassert (FRAME_DISPLAY_INFO (f)->cairo_device
=3D=3D cairo_surface_get_device (surface));
Notice that, before I do the assert, I first check if the surface
returned by `cairo_xcb_surface_create' is good. One thing that I
observed when debugging is that, every time a new frame is created,
this part of the code is hit 3 times. The first time, the surface it
returns is always a bad one, which might even have some random garbage
value for the device. The other 2 times, it's a proper xcb surface,
and they always have the same device in common. Same thing with
subsequent calls, it's always the same cairo-xcb device. Similar
behavior when I make tooltips appear. I've attached a gdb session log
showing it.
> If we are going down this route, I think we should save each distinct
> device returned by `cairo_surface_get_device', and delete each of them
> upon the terminal being deleted.
> As I explained, I saw that function return different devices for the
> same XCB connection, which is definitely a problem with Cairo.
Considering my observation above, it doesn't seem that different
_valid_ devices are being created. But if that is really the case and
I'm missing it, then yes, we make a dynamic list of devices instead.
Consider also that, with the changes I proposed, a device reference is
kept from the beginning, which might influence the results here.
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--0000000000007f086505fc852236--
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 25 May 2023 11:33:28 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu May 25 07:33:28 2023 Received: from localhost ([127.0.0.1]:46137 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q29Dj-00035O-P4 for submit <at> debbugs.gnu.org; Thu, 25 May 2023 07:33:28 -0400 Received: from eggs.gnu.org ([209.51.188.92]:51146) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q29Dh-000358-LF for 63589 <at> debbugs.gnu.org; Thu, 25 May 2023 07:33:26 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q29Dc-000220-Cr; Thu, 25 May 2023 07:33:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=C0Eqi0rJBdwO8flRIDqlKbvZefcLZapuDL8bE18BE5I=; b=Zt0SMMlYFR2W Nhqx08NQEH9D+JIIKMpWSndkB2+sZV+mXv8VsVMc6DD4q93ruYjfvdPxl/oBOIbgr3kl9EsYPdCp/ vkV7I4g+cbGO/yxaRUktS3IBaGEm/0BD7PtaMBdbFuEusm9QfDkawFm6UpAY9I3Xyv/HxEFdqoHWQ Q6Z77rrbGEtKxmnX1HbgpZ+rSz7VLVZaplmfu+oUy6ypj7IkrFv5zd6Uf8HtLOc/pO76WByPDHRgV AXThCpSIz2HriJfHjVXLm+C9u3CvWWrfkYy2tMhxuXdLfHxXrOt0sW6qcc2XQmKy41WRIjcPnm0vp W7ew/WwT3Szetv1iQWhIDQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q29Db-0002L1-Jo; Thu, 25 May 2023 07:33:19 -0400 Date: Thu, 25 May 2023 14:33:48 +0300 Message-Id: <83cz2omyqr.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <874jo0u2bg.fsf@HIDDEN> (message from Po Lu on Thu, 25 May 2023 18:34:43 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> <874jo0u2bg.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Thu, 25 May 2023 18:34:43 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Which other means are those? Please be more specific. > > I thought I explained already: delete-terminal, X server disconnects. What bad things can happen (in the cairo-xcb build) if we don't delete the terminal in all these cases? > > We already agreed to do that (why wasn't that change installed, btw?). > > I didn't realize we agreed. We did. > > I'm trying to establish if there's anything we could do in the > > cairo-xcb configuration to make the crashes more rare, or even prevent > > them altogether. Please bear with me. > > I understand. I've been very preoccupied these past days, which has > made it difficult for me to follow ~3 bug reports at the same time, so > please bear with me also. No problem. As long as the discussion goes on, it can go on slowly, for all I care.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 07482d59da4986cd5dee9a06ec6f2e45; Thu, 25 May 2023 10:34:53 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83jzwwnatg.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 25 May 2023 10:12:59 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> <83jzwwnatg.fsf@HIDDEN> Date: Thu, 25 May 2023 18:34:43 +0800 Message-ID: <874jo0u2bg.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 625 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Which other means are those? Please be more specific. I thought I explained already: delete-terminal, X server disconnects. > We already agreed to do that (why wasn't that change installed, btw?). I didn't realize we agreed. > I'm trying to establish if there's anything we could do in the > cairo-xcb configuration to make the crashes more rare, or even prevent > them altogether. Please bear with me. I understand. I've been very preoccupied these past days, which has made it difficult for me to follow ~3 bug reports at the same time, so please bear with me also. Thanks.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Thu, 25 May 2023 10:32:57 +0000 (UTC)
From: Po Lu <luangruo@HIDDEN>
To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical
frames via emacsclient when compiled with cairo-xcb
In-Reply-To: <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN>
(Thiago Melo's message of "Thu, 25 May 2023 10:24:30 +0000")
References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
<CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN>
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<87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN>
<87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN>
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<87edn6v2v3.fsf@HIDDEN>
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Date: Thu, 25 May 2023 18:32:50 +0800
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Thiago Melo <tmdmelo@HIDDEN> writes:
> So, any application that uses Cairo-XCB with multiple surfaces and
> wants to reopen displays _must_ save a reference to the device and
> _must_ finish + destroy it before closing the display.
>
> With this, here's another try to improve the initial patch, this time
> storing the cairo xcb device for the display at `x_term_init':
>
> #+begin_src diff
> --- a/src/xterm.h 2023-05-25 09:43:50.943793850 +0200
> +++ b/src/xterm.h 2023-05-25 11:32:03.701771148 +0200
> @@ -883,6 +883,13 @@ struct x_display_info
> clock, or 0 if unknown (if the difference is legitimately 0,
> server_time_monotonic_p will be true). */
> int_fast64_t server_time_offset;
> +
> +#if defined USE_XCB && defined USE_CAIRO_XCB
> + /* Cairo device associated with cairo surfaces in this display.
> + Required for proper cleanup before closing display connection
> + in cairo-xcb builds. */
> + cairo_device_t *cairo_device;
> +#endif
> #endif
> };
> #+end_src
>
> #+begin_src diff
> --- a/src/xterm.c 2023-05-25 09:37:24.811402435 +0200
> +++ b/src/xterm.c 2023-05-25 12:18:06.003572028 +0200
> @@ -5806,10 +5806,15 @@ x_begin_cr_clip (struct frame *f, GC gc)
> cairo_surface_t *surface;
> #ifdef USE_CAIRO_XCB_SURFACE
> if (FRAME_DISPLAY_INFO (f)->xcb_visual)
> + {
> surface = cairo_xcb_surface_create (FRAME_DISPLAY_INFO (f)->xcb_connection,
> (xcb_drawable_t) FRAME_X_RAW_DRAWABLE (f),
> FRAME_DISPLAY_INFO (f)->xcb_visual,
> width, height);
> + if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS)
> + eassert (FRAME_DISPLAY_INFO (f)->cairo_device
> + == cairo_surface_get_device (surface));
Did you build with checking? Because when I last tried, this assert
triggered with the second frame created.
> + }
> else
> #endif
> surface = cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
> @@ -30504,6 +30509,27 @@ x_term_init (Lisp_Object display_name, c
>
> unblock_input ();
>
> +#ifdef USE_CAIRO_XCB_SURFACE
> + /* Store reference to the cairo device for this display, to ensure
> + that it is destroyed before closing connection (Bug#63589).
> + For that, we create a drawable, an XCB surface for that drawable,
> + and then we get the device reference from there. */
> + Pixmap drawable;
> + cairo_surface_t *surface;
> +
> + drawable = XCreatePixmap (dpyinfo->display, dpyinfo->root_window,
> + 1, 1, dpyinfo->n_planes);
> + surface = cairo_xcb_surface_create (dpyinfo->xcb_connection, drawable,
> + dpyinfo->xcb_visual, 1, 1);
> +
> + if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS)
> + {
> + dpyinfo->cairo_device = cairo_device_reference
> (cairo_surface_get_device (surface));
> + cairo_surface_destroy (surface);
> + }
> + XFreePixmap (dpyinfo->display, drawable);
> +#endif
> +
> #if defined HAVE_XFIXES && defined USE_XCB
> SAFE_FREE ();
> #endif
> @@ -30783,6 +30809,17 @@ x_delete_terminal (struct terminal *term
> xim_close_dpy (dpyinfo);
> #endif
>
> +#ifdef USE_CAIRO_XCB_SURFACE
> + /* Ensure that the cairo device is destroyed before closing
> + connection (Bug#63589). */
> + if (dpyinfo->cairo_device)
> + {
> + cairo_device_finish (dpyinfo->cairo_device);
> + cairo_device_destroy (dpyinfo->cairo_device);
> + dpyinfo->cairo_device = NULL;
> + }
> +#endif
If we are going down this route, I think we should save each distinct
device returned by `cairo_surface_get_device', and delete each of them
upon the terminal being deleted.
As I explained, I saw that function return different devices for the
same XCB connection, which is definitely a problem with Cairo.
But again, that's a hack. I would rather just disable this misdesigned
and buggy interface by default.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.
Received: (at 63589) by debbugs.gnu.org; 25 May 2023 10:25:18 +0000
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References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
<83wn10ppa1.fsf@HIDDEN>
<CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN>
<CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN>
<CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN>
<874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN>
<83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN>
<87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN>
<CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN>
<83h6s2ng1p.fsf@HIDDEN>
<CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN>
<87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN>
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In-Reply-To: <83jzwwnatg.fsf@HIDDEN>
From: Thiago Melo <tmdmelo@HIDDEN>
Date: Thu, 25 May 2023 10:24:30 +0000
Message-ID: <CABpoeKjWLHAsqYiKRMOgGjd1PUgE26+85y+9E5N9tzLTP=MULw@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Eli Zaretskii <eliz@HIDDEN>
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On Thu, May 25, 2023 at 7:12=E2=80=AFAM Eli Zaretskii <eliz@HIDDEN> wrote:
> I'm trying to establish if there's anything we could do in the
> cairo-xcb configuration to make the crashes more rare, or even prevent
> them altogether.
Regarding this, before posting at the cairo mailing list, I searched
better their archives to check if this issue was already properly
addressed. I found this:
https://lists.cairographics.org/archives/cairo/2018-November/028791.html
Title: cairo_xcb_surface_create() segfaults on second call with
different xcb info
Where Uli Schlachter (libxcb contributor and main maintainer of
Cairo-XCB nowadays) discusses the issue we're having here, the design
of Cairo-XCB, how to use it with multiple surfaces and after reopening
the display. To highlight, Uli says:
| Cairo has to get quite some information from the X11 server. [...]
|
| [...] querying this all the time would be slow. Thus, cairo caches
| this information. Namely, there is an instance of cairo_device_t. This
| instance is kept around even when all surfaces using this device are
| destroyed. [...]
|
| [...] when you call xcb_disconnect(),
| the cache now contains a dangling pointer. The next call to
| xcb_connect() might very well allocate an xcb_connection_t* with the
| same pointer. Thus, you now get a cache hit even though there is a new
| XCB connection. Bad things happen afterwards
Thus, it doesn't matter if Emacs destroys all cairo-xcb surfaces
before closing the display, the device reference will always linger
around together with all its cairo cache by design. It simply doesn't
work like Cairo-XLib at all.
Then, Uli says:
| If you want to keep the device around for later (i.e. have multiple
| surface using the same device), you can save a pointer via:
|
| cairo_device_t *device =3D cairo_device_reference(....);
|
| Now, you have to later call cairo_device_destroy() when you no longer
| need the reference, but you get a pointer to the cairo_device_t
| independent of a cairo xcb surface.
|
| Oh and: You have to finish the device before you call xcb_disconnect().
So, any application that uses Cairo-XCB with multiple surfaces and
wants to reopen displays _must_ save a reference to the device and
_must_ finish + destroy it before closing the display.
With this, here's another try to improve the initial patch, this time
storing the cairo xcb device for the display at `x_term_init':
#+begin_src diff
--- a/src/xterm.h 2023-05-25 09:43:50.943793850 +0200
+++ b/src/xterm.h 2023-05-25 11:32:03.701771148 +0200
@@ -883,6 +883,13 @@ struct x_display_info
clock, or 0 if unknown (if the difference is legitimately 0,
server_time_monotonic_p will be true). */
int_fast64_t server_time_offset;
+
+#if defined USE_XCB && defined USE_CAIRO_XCB
+ /* Cairo device associated with cairo surfaces in this display.
+ Required for proper cleanup before closing display connection
+ in cairo-xcb builds. */
+ cairo_device_t *cairo_device;
+#endif
#endif
};
#+end_src
#+begin_src diff
--- a/src/xterm.c 2023-05-25 09:37:24.811402435 +0200
+++ b/src/xterm.c 2023-05-25 12:18:06.003572028 +0200
@@ -5806,10 +5806,15 @@ x_begin_cr_clip (struct frame *f, GC gc)
cairo_surface_t *surface;
#ifdef USE_CAIRO_XCB_SURFACE
if (FRAME_DISPLAY_INFO (f)->xcb_visual)
+ {
surface =3D cairo_xcb_surface_create (FRAME_DISPLAY_INFO (f)->xcb_conn=
ection,
(xcb_drawable_t) FRAME_X_RAW_DRAWABLE (f),
FRAME_DISPLAY_INFO (f)->xcb_visual,
width, height);
+ if (cairo_surface_status (surface) =3D=3D CAIRO_STATUS_SUCCESS)
+ eassert (FRAME_DISPLAY_INFO (f)->cairo_device
+ =3D=3D cairo_surface_get_device (surface));
+ }
else
#endif
surface =3D cairo_xlib_surface_create (FRAME_X_DISPLAY (f),
@@ -30504,6 +30509,27 @@ x_term_init (Lisp_Object display_name, c
unblock_input ();
+#ifdef USE_CAIRO_XCB_SURFACE
+ /* Store reference to the cairo device for this display, to ensure
+ that it is destroyed before closing connection (Bug#63589).
+ For that, we create a drawable, an XCB surface for that drawable,
+ and then we get the device reference from there. */
+ Pixmap drawable;
+ cairo_surface_t *surface;
+
+ drawable =3D XCreatePixmap (dpyinfo->display, dpyinfo->root_window,
+ 1, 1, dpyinfo->n_planes);
+ surface =3D cairo_xcb_surface_create (dpyinfo->xcb_connection, drawable,
+ dpyinfo->xcb_visual, 1, 1);
+
+ if (cairo_surface_status (surface) =3D=3D CAIRO_STATUS_SUCCESS)
+ {
+ dpyinfo->cairo_device =3D cairo_device_reference
(cairo_surface_get_device (surface));
+ cairo_surface_destroy (surface);
+ }
+ XFreePixmap (dpyinfo->display, drawable);
+#endif
+
#if defined HAVE_XFIXES && defined USE_XCB
SAFE_FREE ();
#endif
@@ -30783,6 +30809,17 @@ x_delete_terminal (struct terminal *term
xim_close_dpy (dpyinfo);
#endif
+#ifdef USE_CAIRO_XCB_SURFACE
+ /* Ensure that the cairo device is destroyed before closing
+ connection (Bug#63589). */
+ if (dpyinfo->cairo_device)
+ {
+ cairo_device_finish (dpyinfo->cairo_device);
+ cairo_device_destroy (dpyinfo->cairo_device);
+ dpyinfo->cairo_device =3D NULL;
+ }
+#endif
+
/* Normally, the display is available... */
if (dpyinfo->display)
{
#+end_src
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 25 May 2023 07:12:40 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu May 25 03:12:40 2023 Received: from localhost ([127.0.0.1]:45801 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q259M-0007Ic-GZ for submit <at> debbugs.gnu.org; Thu, 25 May 2023 03:12:40 -0400 Received: from eggs.gnu.org ([209.51.188.92]:38166) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q259I-0007IN-7g for 63589 <at> debbugs.gnu.org; Thu, 25 May 2023 03:12:39 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q259C-0005PA-RB; Thu, 25 May 2023 03:12:30 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=ciZnwvw7jI9c+m0aJM1N3dZF9KHnn13oLAWyrGY7UZM=; b=A/2LbfpDCQmV +qPLe6VR9fmDW5R1Q7CE3UiJjsOAbucA7eqSaq5+9uPVnsg47PkBkHKmY2TIbVIL//Sg0KOgTSclM gsJcwo8eVUYEdkch0KcrcsTNLb9WzccsBUFepYh5jlKTkJdyX6H4FQVMPGNGu2a1vbaV8DFU3cx9R V+3Gim85/s9QTmO8xmgMBmzSgjqiptHkmCqBUNYIrKw676Jyk4DkRzr0cD5Go6TcqBzeZ7yGmlC74 +tvbJShMyyxP4jU+J2VJVXSlN5NU8lGLSyV3mhozyV2dovvm02C5Pnu3MuUdGufEPRdDTTD6LDoSM WiYxi2Wf5BT2LE+/WJL6Hw==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q259C-0002Gj-CE; Thu, 25 May 2023 03:12:30 -0400 Date: Thu, 25 May 2023 10:12:59 +0300 Message-Id: <83jzwwnatg.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87h6s1t01w.fsf@HIDDEN> (message from Po Lu on Thu, 25 May 2023 14:08:59 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> <87h6s1t01w.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Thu, 25 May 2023 14:08:59 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > So let's back up a notch. There was a suggestion to avoid the call to > > XCloseDisplay when the last frame on display is deleted, like we do > > for some other toolkits already. Would that avoid the crashes due to > > this issue? If yes, why did you reject the suggestion? > > Because it would still lead to crashes when the display connection is > closed by other means. Which other means are those? Please be more specific. > Thus, the proper solution is simply to disable cairo-xcb by default. We already agreed to do that (why wasn't that change installed, btw?). I'm trying to establish if there's anything we could do in the cairo-xcb configuration to make the crashes more rare, or even prevent them altogether. Please bear with me.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 2242c9ee5f1009a6ff93fb9514586090; Thu, 25 May 2023 06:09:05 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83sfblm66s.fsf@HIDDEN> (Eli Zaretskii's message of "Thu, 25 May 2023 06:38:19 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> <83sfblm66s.fsf@HIDDEN> Date: Thu, 25 May 2023 14:08:59 +0800 Message-ID: <87h6s1t01w.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 483 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > So let's back up a notch. There was a suggestion to avoid the call to > XCloseDisplay when the last frame on display is deleted, like we do > for some other toolkits already. Would that avoid the crashes due to > this issue? If yes, why did you reject the suggestion? Because it would still lead to crashes when the display connection is closed by other means. Thus, the proper solution is simply to disable cairo-xcb by default.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 25 May 2023 03:38:00 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 24 23:38:00 2023 Received: from localhost ([127.0.0.1]:45566 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q21nc-0006fY-6Q for submit <at> debbugs.gnu.org; Wed, 24 May 2023 23:38:00 -0400 Received: from eggs.gnu.org ([209.51.188.92]:41764) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q21nZ-0006fK-Va for 63589 <at> debbugs.gnu.org; Wed, 24 May 2023 23:37:58 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q21nU-0007xr-Ec; Wed, 24 May 2023 23:37:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=2QWQuFsNlvj2uxsvbdtgjVhtut35sfkfHinV7CeSQCA=; b=YPZks1s2BwZT tMoynX4rdMOWaoJwO46QtuGR2ES56lNbYblJGk+Art3d9wpqO0jPz0tnP19QqmTpYnfLSrIYIr4pg hEnkADR0k/sgAri7OQlnDfh5JLbj9hbCLi4fXmgle1oGboZnSq3Hy3q/AeF2vsAgns00dbSBRdtFp FQFssHgFN/6NTQFBh2xy0n/QCeLqrwqt80bK5l9me/vAR/3X43QOVup9NKAa5gSA6swYBt1psqYJx F4KYai6M43+BfgFBAVVkCwPa4PMXiaic5WD+qzX9nHagzmMt2kNDgQkNTBpARz1OFtd91xQeFh+aW Rl1mZV3ZTQ7RZ7kZ3QVA2A==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q21nT-0008DP-Ty; Wed, 24 May 2023 23:37:52 -0400 Date: Thu, 25 May 2023 06:38:19 +0300 Message-Id: <83sfblm66s.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87o7m9tga9.fsf@HIDDEN> (message from Po Lu on Thu, 25 May 2023 08:18:22 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> <87o7m9tga9.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Thu, 25 May 2023 08:18:22 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Please also answer my questions I asked in my previous message. > > Which one? This one: Maybe I'm jumping to conclusions, sorry. So let's back up a notch. There was a suggestion to avoid the call to XCloseDisplay when the last frame on display is deleted, like we do for some other toolkits already. Would that avoid the crashes due to this issue? If yes, why did you reject the suggestion?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID d3ccaf1de5b7d0084ae12a9e19570ce4; Thu, 25 May 2023 00:18:28 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83bki9ohsc.fsf@HIDDEN> (Eli Zaretskii's message of "Wed, 24 May 2023 18:44:51 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> <83bki9ohsc.fsf@HIDDEN> Date: Thu, 25 May 2023 08:18:22 +0800 Message-ID: <87o7m9tga9.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 191 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Please also answer my questions I asked in my previous message. Which one? I lost track of the discussion surrounding this thread, sorry about that.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 24 May 2023 15:44:33 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 24 11:44:33 2023 Received: from localhost ([127.0.0.1]:44445 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1qfB-0005mn-F0 for submit <at> debbugs.gnu.org; Wed, 24 May 2023 11:44:33 -0400 Received: from eggs.gnu.org ([209.51.188.92]:45116) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1qf8-0005mU-G7 for 63589 <at> debbugs.gnu.org; Wed, 24 May 2023 11:44:32 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1qf3-0003LY-2H; Wed, 24 May 2023 11:44:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=oWaLu//bAqmuJav52YqHUa5PyjSHHnJVowcCRZ7efIg=; b=inxKa695X7HL 3ufEz+8Z9RJD+13kSE8PnLtliD0qL0Unt4SN3UUHq9sfKGjisKOVGCEyghu8iKAf8QkzBuS7aY6VN bwf3ujv4qn9fEoatNe8q62ACxycnXU6xWOJtDyADmhC6ph+KF6lIlSQhQj/cSLNxJje+YD0usp6TT vPJk2wcVAm3NhSAPI/vsMuiJ5ihmB3BjxvN02yu/LZ63vnYIK+H3P1AfloemR38xzw+GPT3rLGwAL mETjwaN8WVewXGvvsa3JdM5tGry9d7p5ECXds5jhlI46gDXtBgNMfOdeiZ862u6gubCE24jAA+x+1 HbOMG5eBSGeQ1z/V+Hn9Qg==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1qf2-0003MY-39; Wed, 24 May 2023 11:44:24 -0400 Date: Wed, 24 May 2023 18:44:51 +0300 Message-Id: <83bki9ohsc.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87v8gisz6u.fsf@HIDDEN> (message from Po Lu on Wed, 24 May 2023 20:15:21 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 63589 <at> debbugs.gnu.org > Date: Wed, 24 May 2023 20:15:21 +0800 > > I thought I explained what the problems with trying to fix this in Emacs > are. [...] Please also answer my questions I asked in my previous message.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 24 May 2023 14:17:06 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 24 10:17:06 2023 Received: from localhost ([127.0.0.1]:44282 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1pIX-00038P-Jk for submit <at> debbugs.gnu.org; Wed, 24 May 2023 10:17:06 -0400 Received: from mail-qt1-f169.google.com ([209.85.160.169]:55484) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q1pIV-00037s-EZ for 63589 <at> debbugs.gnu.org; Wed, 24 May 2023 10:17:04 -0400 Received: by mail-qt1-f169.google.com with SMTP id d75a77b69052e-3f6ac005824so9730791cf.2 for <63589 <at> debbugs.gnu.org>; Wed, 24 May 2023 07:17:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1684937818; x=1687529818; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=jIMTN5xVRJXjRKNcpBVR7fnivAGt5nEQM4FaGmFaxQQ=; b=iZX4npKz8wWMPdN7ThiJmI78bcgyY+Ob4NYJEncf8KfRAVwz/l2W7CbC7RSqFH/gex YE9UXGTnUe1JaGG5yBxqLkvByqnl75CeV5gkU/ysJQuRN6ZS8bkY653kDo9qNdKeiOL2 092GWCL39ouIrqG/44WZDzwp4GC0GZ0fc3GM+adaJtFr5IK8M/691QNVc/HzZQSb19p4 Gn6ymSGoslHaHu3wAu3P4eqsGllhKDTDtFTJ8q9yae+kCyKZPNMkLYAv+vQAqvdjxoGr iqnpnG4K7cHgxzmoNg5pPkmZbP1O5RBTG3WN+oSDceVFunFv6C7lIYIrN/7o7aSpJIqW +wdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684937818; x=1687529818; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=jIMTN5xVRJXjRKNcpBVR7fnivAGt5nEQM4FaGmFaxQQ=; b=W1xP3FNmZ1hB7SAywSghr/Jq20g3D+RGZ6gy2K+t7pzRbw5smVnbWSkste6Hb5048+ gOELlNiG2IY1SfS34gC+NCJbCJJfzTDnvpjo2Bj2TcuzCLs97W2x8d29ZhW8sV6aoJFQ 15CWkTAfKFyW1bkMaWbgfbmpEAYR9uHlT/msO5iKKLcB2Z0/nd65uZI9ZV6estWvgmTh rna9Ay/izRmIivzcJz952pYngIYeaXhfP8IkMDgsg3HhMOdhwhRUpeU6ja6xrSxEG/FG uY2CU0EbxC9A7FFa71d2J82ZUfxKvpIg+iXx9x4qKP+4mpJQ2vnQtiTF0//50S3hhWTn UcSg== X-Gm-Message-State: AC+VfDwOXIXWlYipYink67MtTS90lMzuw8NfeErBRNryeCVTvJF4wWdS hy2dS0z7YFxLR5nSNux7Pp/swBGx6Yit8cUfBkw= X-Google-Smtp-Source: ACHHUZ4RFNvWkqgEAmEnF6KXrR4uVhu68uSPPWq8DUiNepur9De/j50wrSo2vWtIiMCr5NIQIyCk/kOV7OXpRCU9Nyw= X-Received: by 2002:ac8:7f13:0:b0:3f6:c0f7:a5c4 with SMTP id f19-20020ac87f13000000b003f6c0f7a5c4mr4383135qtk.25.1684937817619; Wed, 24 May 2023 07:16:57 -0700 (PDT) MIME-Version: 1.0 References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> <83h6s2ng1p.fsf@HIDDEN> <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN> <87v8gisz6u.fsf@HIDDEN> In-Reply-To: <87v8gisz6u.fsf@HIDDEN> From: Thiago Melo <tmdmelo@HIDDEN> Date: Wed, 24 May 2023 14:16:20 +0000 Message-ID: <CABpoeKjY6C2K-iZsov=ChPT3JEQ+zamqUFq9v47T83-E_B+cog@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: Po Lu <luangruo@HIDDEN> Content-Type: multipart/mixed; boundary="00000000000016fd5e05fc7128df" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --00000000000016fd5e05fc7128df Content-Type: text/plain; charset="UTF-8" > I thought I explained what the problems with trying to fix this in Emacs > are. The first is: there's a reference leak in Cairo somewhere, since > Emacs never allows displays to be closed without each frame being > destroyed, and destroying each frame will also dereference its Cairo > surface; thus, it's not actually Emacs's problem. [...] > The other problem occurs when `cairo_xcb_surface_create' creates a > different device from the one that was previously created for the > display. So you have only destroyed one of several devices, any one of > which may rear its ugly head later. This is also a bug in Cairo. > > BTW, it's not necessary to call XFreePixmap, as all resources created > by the client will be destroyed per the close down mode set earlier. Welp, I guess it means that all that remains is bringing up the issue to the Cairo mailing list (again) and waiting for the problem to be solved from their side. I'm afraid they might just say that Emacs is "holding it wrong". :( By the way, I wrote a minimal standalone cairo-xcb c program (see attached) to trigger this particular bug. It opens a small window via xcb, draws something via cairo, destroys the window and closes the display when any key or mouse button is pressed on it, then recreates everything again... And it repeats until it crashes (Hopefully. At lest it crashes in my system). Redrawing errors also happen during the process. It might be an useful example to bring to the Cairo mailing list and to debug the root of this issue. Thanks for everything you taught me, Po Lu. --00000000000016fd5e05fc7128df Content-Type: text/x-csrc; charset="US-ASCII"; name="cairo-xcb-bug.c" Content-Disposition: attachment; filename="cairo-xcb-bug.c" Content-Transfer-Encoding: base64 Content-ID: <f_li1scik30> X-Attachment-Id: f_li1scik30 LyogRXhhbXBsZSBwcm9ncmFtIHRvIHRyaWdnZXIgcmVmZXJlbmNlIGJ1Z3MgaW4gY2Fpcm8teGNi CiAgIHdoZW4gcmVvcGVuaW5nIHRoZSBkaXNwbGF5LgogICBUaGlzIHByb2dyYW0gc2hvdWxkIGNy YXNoIHdpdGggdGhlIGZvbGxvd2luZyBlcnJvciBtZXNzYWdlOgogICBgYGAKICAgY2Fpcm8teGNi LXNjcmVlbi5jOjIxOTogX2dldF9zY3JlZW5faW5kZXg6IEFzc2VydGlvbiBgISJyZWFjaGVkIicg ZmFpbGVkLgogICBgYGAKICAgQ29tcGlsZSB3aXRoOgogICBnY2MgLVdhbGwgLW8gY2Fpcm8teGNi LWJ1ZyBjYWlyby14Y2ItYnVnLmMgYHBrZy1jb25maWcgLS1jZmxhZ3MgLS1saWJzIGNhaXJvLXhj YiB4MTEteGNiYCAtTzAgLWczCiAqLwoKI2luY2x1ZGUgPHN0ZGxpYi5oPgojaW5jbHVkZSA8c3Rk aW8uaD4KI2luY2x1ZGUgPHVuaXN0ZC5oPgoKI2luY2x1ZGUgPHhjYi94Y2IuaD4KI2luY2x1ZGUg PFgxMS9YbGliLXhjYi5oPgoKI2luY2x1ZGUgPGNhaXJvLmg+CiNpbmNsdWRlIDxjYWlyby14Y2Iu 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bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Wed, 24 May 2023 12:15:26 +0000 (UTC)
From: Po Lu <luangruo@HIDDEN>
To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical
frames via emacsclient when compiled with cairo-xcb
In-Reply-To: <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN>
(Thiago Melo's message of "Wed, 24 May 2023 11:54:30 +0000")
References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
<87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN>
<835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN>
<83wn10ppa1.fsf@HIDDEN>
<CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN>
<CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN>
<CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN>
<874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN>
<87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN>
<87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN>
<87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN>
<87edn6v2v3.fsf@HIDDEN>
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<83h6s2ng1p.fsf@HIDDEN>
<CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN>
Date: Wed, 24 May 2023 20:15:21 +0800
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Thiago Melo <tmdmelo@HIDDEN> writes:
> Sorry for not being clear. I meant calls to `delete-terminal', when
> Emacs is built with Cairo-XCB, and regardless of the toolkit. It's a
> similar scenario to trigger the bug: launch Emacs daemon, open one or
> more graphical frames, call the elisp function`delete-terminal' (all
> graphical frames and the display are closed because of it), open a new
> graphical frame...
>
> My last patch doesn't fix it because it only works when
> `(delete-frame)' is called instead. This situation is specific for
> toolkitless + Cairo-XCB Emacs, since here it ends up calling
> `x_delete_terminal' -> `XCloseDisplay'. Other toolkits don't call
> `x_delete_terminal' here, due to the logic at `delete_frame'.
>
> I hope I was more clear this time.
>
> My opinion is that it's all the same issue, which boils down to
> Cairo-XCB requiring more manual memory management than Cairo-XLib by
> design or limitation. I think we should really consider the approach
> from my first patch, which is ensuring that the Cairo-XCB device is
> cleaned up before calling XCloseDisplay. Everything else is a
> workaround. If the patch is considered too unsafe or too big, then we
> must clarify the specifics of what makes it so, so the matter can be
> addressed in a better way.
I thought I explained what the problems with trying to fix this in Emacs
are. The first is: there's a reference leak in Cairo somewhere, since
Emacs never allows displays to be closed without each frame being
destroyed, and destroying each frame will also dereference its Cairo
surface; thus, it's not actually Emacs's problem.
> Here's another patch, similar to the first one, but it only acts at
> `x_delete_terminal', and without storing global references. The
> strategy is similar to the one used at
> `ftcrfont_get_default_font_options'. It creates a dummy pixmap, then a
> dummy cairo xcb surface from it, then it extracts the cairo device
> from the surface, and then cleans up them all.
>
> #+begin_src diff
> --- a/src/xterm.c 2023-05-24 12:42:14.873824624 +0200
> +++ b/src/xterm.c 2023-05-24 13:45:23.798382193 +0200
> @@ -30841,6 +30841,30 @@
> closing all the displays. */
> XrmDestroyDatabase (dpyinfo->rdb);
> #endif
> +#ifdef USE_CAIRO_XCB_SURFACE
> + /* Ensure that the cairo device is destroyed before closing
> + connection (Bug#63589). For that, we create a drawable, an XCB
> + surface for that drawable, and then we get the device reference
> + from there. */
> +
> + Pixmap drawable;
> + cairo_surface_t *surface;
> +
> + drawable = XCreatePixmap (dpyinfo->display, dpyinfo->root_window,
> + 1, 1, dpyinfo->n_planes);
> + surface = cairo_xcb_surface_create (dpyinfo->xcb_connection, drawable,
> + dpyinfo->xcb_visual, 1, 1);
> +
> + if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS)
> + {
> + cairo_device_t *cairo_device;
> + cairo_device = cairo_device_reference (cairo_surface_get_device
> (surface));
> + cairo_surface_destroy (surface);
> + cairo_device_finish (cairo_device);
> + cairo_device_destroy (cairo_device);
> + }
> + XFreePixmap (dpyinfo->display, drawable);
> +#endif
> #ifdef USE_GTK
> xg_display_close (dpyinfo->display);
> #else
> #+end_src
The other problem occurs when `cairo_xcb_surface_create' creates a
different device from the one that was previously created for the
display. So you have only destroyed one of several devices, any one of
which may rear its ugly head later. This is also a bug in Cairo.
BTW, it's not necessary to call XFreePixmap, as all resources created
by the client will be destroyed per the close down mode set earlier.
Thanks.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
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<874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN>
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In-Reply-To: <83h6s2ng1p.fsf@HIDDEN>
From: Thiago Melo <tmdmelo@HIDDEN>
Date: Wed, 24 May 2023 11:54:30 +0000
Message-ID: <CABpoeKh5uW_gRAEH3_SR78=K9wcE==MYf173u3c2BN+CD6g7Vw@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Eli Zaretskii <eliz@HIDDEN>
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> What triggers the bug with Lucid and GTK builds? the patch you
> proposed or calls to delete-terminal? If the latter, then this is a
> separate issue, and at least the Cairo-xcb build will behave like the
> other builds in that scenario. Right?
Sorry for not being clear. I meant calls to `delete-terminal', when
Emacs is built with Cairo-XCB, and regardless of the toolkit. It's a
similar scenario to trigger the bug: launch Emacs daemon, open one or
more graphical frames, call the elisp function`delete-terminal' (all
graphical frames and the display are closed because of it), open a new
graphical frame...
My last patch doesn't fix it because it only works when
`(delete-frame)' is called instead. This situation is specific for
toolkitless + Cairo-XCB Emacs, since here it ends up calling
`x_delete_terminal' -> `XCloseDisplay'. Other toolkits don't call
`x_delete_terminal' here, due to the logic at `delete_frame'.
I hope I was more clear this time.
My opinion is that it's all the same issue, which boils down to
Cairo-XCB requiring more manual memory management than Cairo-XLib by
design or limitation. I think we should really consider the approach
from my first patch, which is ensuring that the Cairo-XCB device is
cleaned up before calling XCloseDisplay. Everything else is a
workaround. If the patch is considered too unsafe or too big, then we
must clarify the specifics of what makes it so, so the matter can be
addressed in a better way.
Here's another patch, similar to the first one, but it only acts at
`x_delete_terminal', and without storing global references. The
strategy is similar to the one used at
`ftcrfont_get_default_font_options'. It creates a dummy pixmap, then a
dummy cairo xcb surface from it, then it extracts the cairo device
from the surface, and then cleans up them all.
#+begin_src diff
--- a/src/xterm.c 2023-05-24 12:42:14.873824624 +0200
+++ b/src/xterm.c 2023-05-24 13:45:23.798382193 +0200
@@ -30841,6 +30841,30 @@
closing all the displays. */
XrmDestroyDatabase (dpyinfo->rdb);
#endif
+#ifdef USE_CAIRO_XCB_SURFACE
+ /* Ensure that the cairo device is destroyed before closing
+ connection (Bug#63589). For that, we create a drawable, an XCB
+ surface for that drawable, and then we get the device reference
+ from there. */
+
+ Pixmap drawable;
+ cairo_surface_t *surface;
+
+ drawable = XCreatePixmap (dpyinfo->display, dpyinfo->root_window,
+ 1, 1, dpyinfo->n_planes);
+ surface = cairo_xcb_surface_create (dpyinfo->xcb_connection, drawable,
+ dpyinfo->xcb_visual, 1, 1);
+
+ if (cairo_surface_status (surface) == CAIRO_STATUS_SUCCESS)
+ {
+ cairo_device_t *cairo_device;
+ cairo_device = cairo_device_reference (cairo_surface_get_device
(surface));
+ cairo_surface_destroy (surface);
+ cairo_device_finish (cairo_device);
+ cairo_device_destroy (cairo_device);
+ }
+ XFreePixmap (dpyinfo->display, drawable);
+#endif
#ifdef USE_GTK
xg_display_close (dpyinfo->display);
#else
#+end_src
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 24 May 2023 11:07:27 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 24 07:07:27 2023 Received: from localhost ([127.0.0.1]:42099 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1mL0-0006vC-QA for submit <at> debbugs.gnu.org; Wed, 24 May 2023 07:07:27 -0400 Received: from eggs.gnu.org ([209.51.188.92]:53384) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1mKy-0006uv-Tg for 63589 <at> debbugs.gnu.org; Wed, 24 May 2023 07:07:25 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1mKt-0002Ed-M7; Wed, 24 May 2023 07:07:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=09x78PWxci6Tu/aZxDCxHpFhS1YDsMmWnfz7WVphE5o=; b=J03x96neCXu9 hvHtzHBP3umkvYBK+4qVFpU30NEmz33VCFAa887vd+4eWzIOGpVpc7i3VYOTawuRzDiELZc1ctVRw a+C741LXRo57uWqBEyKpwTLUpB/6pFd5m709AUrtMOd7yI9z6+9kOcoN38yUHKuTLjpL2gQ59c9wz uwmnFssST5dtQo7FR/b48Kvso8Yd/K/JinwfkLEdKn3L7ZjOkIJCJTV9nv/Sx4v+NpZOzPWyvpV52 JPKdYxyzTyCioNX2CSj8pQlcXzGXFdyfPwnWiNk3CbVp0y6+mRcjmyGnUiZr4ldwEjmtKvYjMBr43 d3H4PhogtmQATqHEUH1m/Q==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1mKt-0003gJ-5S; Wed, 24 May 2023 07:07:19 -0400 Date: Wed, 24 May 2023 14:07:46 +0300 Message-Id: <83h6s2ng1p.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Thiago Melo <tmdmelo@HIDDEN> In-Reply-To: <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> (message from Thiago Melo on Wed, 24 May 2023 05:15:46 +0000) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: luangruo@HIDDEN, 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Thiago Melo <tmdmelo@HIDDEN> > Date: Wed, 24 May 2023 05:15:46 +0000 > Cc: Eli Zaretskii <eliz@HIDDEN>, 63589 <at> debbugs.gnu.org > > Regardless of what Emacs does at exit, you were right to point out > about calling, eg, the elisp function `delete-terminal', Po Lu. It > ends up always calling XCloseDisplay and, in fact, the last patch > doesn't cover it. I've tested it, and it even triggers the bug with > Lucid and GTK builds. What triggers the bug with Lucid and GTK builds? the patch you proposed or calls to delete-terminal? If the latter, then this is a separate issue, and at least the Cairo-xcb build will behave like the other builds in that scenario. Right?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 24 May 2023 11:01:41 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed May 24 07:01:41 2023 Received: from localhost ([127.0.0.1]:42085 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1mFQ-0006ih-NM for submit <at> debbugs.gnu.org; Wed, 24 May 2023 07:01:40 -0400 Received: from eggs.gnu.org ([209.51.188.92]:39688) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1mFN-0006iS-T7 for 63589 <at> debbugs.gnu.org; Wed, 24 May 2023 07:01:38 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1mFI-0000Aa-KY; Wed, 24 May 2023 07:01:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=I+uhzTfxAzCl0T8yTTzMBvNaJBgoHEkaVNkHx856wF4=; b=qQSBMzsnM8m9 Fgcr1o6SKJVlnKIv3XXUigdyCByxBpZqJQIc8z8+SRk4Wa0ImGBH2Jycn8iP/V8Tew/K1xIFPame0 XMIpAQAgeog+UHoU1cB/AGXbGjBrjYKxsxBBoMnW83PAMFvklPeLyVZiDehG3dKYuNZ019jpqtZ8l GzJ0oVXZiQpyvrTs2AMgdMnRbJTtF7v6UWRNruAX3Xt/JRwSBDav9yRtBUXJtTg3CbFfdejayKQdY /87VLV/SLo8SzEocqt7aaq+SrznqO2qVlFz+JyX7pvU9ZUSlpKhLbvJTnGz5UD7+XralS44aTL5gr kBH2bQ/2MJ7zNRFNsQs7OQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1mFF-0008G0-2C; Wed, 24 May 2023 07:01:32 -0400 Date: Wed, 24 May 2023 14:01:56 +0300 Message-Id: <83jzwyngbf.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87edn6v2v3.fsf@HIDDEN> (message from Po Lu on Wed, 24 May 2023 11:13:04 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> <87edn6v2v3.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Wed, 24 May 2023 11:13:04 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Which is why I asked whether x-delete-terminal etc. could call a > > function that is different from what we call when we exit. > > Why is what Emacs does upon exiting relevant here? > The problem occurs when a display connection is closed while Emacs > wants to stay running. Cairo keeps a pointer to the xcb connection, > and if by some chance a pointer with the same value is returned the > next time a display connection is opened, it loses. Maybe I'm jumping to conclusions, sorry. So let's back up a notch. There was a suggestion to avoid the call to XCloseDisplay when the last frame on display is deleted, like we do for some other toolkits already. Would that avoid the crashes due to this issue? If yes, why did you reject the suggestion?
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Wed, 24 May 2023 05:15:46 +0000
Message-ID: <CABpoeKiFbuu42U3daNjz2TPR-=3_T+HabbxnTO4tDDWXfX1C6w@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Po Lu <luangruo@HIDDEN>
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> > Which is why I asked whether x-delete-terminal etc. could call a
> > function that is different from what we call when we exit.
>
> Why is what Emacs does upon exiting relevant here?
> The problem occurs when a display connection is closed while Emacs
> wants to stay running. Cairo keeps a pointer to the xcb connection,
> and if by some chance a pointer with the same value is returned the
> next time a display connection is opened, it loses.
Regardless of what Emacs does at exit, you were right to point out
about calling, eg, the elisp function `delete-terminal', Po Lu. It
ends up always calling XCloseDisplay and, in fact, the last patch
doesn't cover it. I've tested it, and it even triggers the bug with
Lucid and GTK builds.
Here's an updated script to trigger the bug in all these cases:
#+begin_src bash
# repeatedly create graphical frames and close them all
for k in $(seq 10); do
emacsclient -c -n -a /bin/false &&
sleep 1 &&
emacsclient -e "(delete-terminal)"
done
#+end_src
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 8ef58d852795c427574bdb761cb54f4e; Wed, 24 May 2023 03:13:09 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83r0r6o3zk.fsf@HIDDEN> (Eli Zaretskii's message of "Wed, 24 May 2023 05:30:39 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> <83r0r6o3zk.fsf@HIDDEN> Date: Wed, 24 May 2023 11:13:04 +0800 Message-ID: <87edn6v2v3.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 474 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Which is why I asked whether x-delete-terminal etc. could call a > function that is different from what we call when we exit. Why is what Emacs does upon exiting relevant here? The problem occurs when a display connection is closed while Emacs wants to stay running. Cairo keeps a pointer to the xcb connection, and if by some chance a pointer with the same value is returned the next time a display connection is opened, it loses.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 24 May 2023 02:30:25 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue May 23 22:30:25 2023 Received: from localhost ([127.0.0.1]:40777 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1eGf-0003AV-Gd for submit <at> debbugs.gnu.org; Tue, 23 May 2023 22:30:25 -0400 Received: from eggs.gnu.org ([209.51.188.92]:48816) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1eGd-0003AG-RN for 63589 <at> debbugs.gnu.org; Tue, 23 May 2023 22:30:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1eGY-0000pC-Cs; Tue, 23 May 2023 22:30:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=x8B4HCALEV9F4ulh6DTYS9vLYRlqpYjZRAgg6LblX4E=; b=F0jBiV6gKUE+ DDnjcq37SzkDTxL490VzGCyf7SMBgC3nBQoRqZM99E4nONa7a6ui7cOnIcH2Nt9Zhva4s4iHVu6/I 3mcdLwPBjB8SDzwqqM3kV2YdpaCN+fUm2Pvhd4DX2P/lHnmN9vViTJ1ebn8t9hLSMjN/HKc790+r0 lfiNHmUy3vSttccsjcsO36N6vsp7PU8Mylan20YENZ3XbGYqA3yKuBGna64EoJBHejlMt1PNzwW5i BwoHTIZXq5UDBNROBawLhQ/IFwqWEuU0UjHAHlNtRrmOEmOsLRlXXNt+lgXlGr6GuTP/Yql7NizWa dJJn4YXJX9baTmmbZngDpg==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1eGT-0006zc-IU; Tue, 23 May 2023 22:30:18 -0400 Date: Wed, 24 May 2023 05:30:39 +0300 Message-Id: <83r0r6o3zk.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87lehevaqz.fsf@HIDDEN> (message from Po Lu on Wed, 24 May 2023 08:22:44 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> <87lehevaqz.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Wed, 24 May 2023 08:22:44 +0800 > > Nevermind, I got this thread mixed up with that of that of bug#63555... > What I was originally trying to explain was why closing displays can > still happen, even on toolkit builds: the user might call > `x-delete-terminal'. Which is why I asked whether x-delete-terminal etc. could call a function that is different from what we call when we exit. So now I'm back to my question.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID ce22995866e2676e679126d12eb2b053; Wed, 24 May 2023 00:22:48 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83wn0znn7j.fsf@HIDDEN> (Eli Zaretskii's message of "Tue, 23 May 2023 17:20:48 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> <83wn0znn7j.fsf@HIDDEN> Date: Wed, 24 May 2023 08:22:44 +0800 Message-ID: <87lehevaqz.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 1502 X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: >> From: Po Lu <luangruo@HIDDEN> >> Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org >> Date: Tue, 23 May 2023 21:18:04 +0800 >> >> Eli Zaretskii <eliz@HIDDEN> writes: >> >> > Then I don't understand your objections to the proposed patch. Please >> > elaborate. >> >> Please see the other thread(s), where I explained in detail the two >> problems with `gtk_init_check': upon success, it leaves two display >> connections open, which is quite fragile, and upon failure, it makes >> creating another display impossible, even if a display then becomes >> available. > > I've read all those discussions in real time, and I still don't see > the obvious connection. So please humor me with a more detailed and > complete explanation of why the last suggested patch somehow causes > extra connections open. And let me remind you that your objection, > which is what caused my question, was > >> We want closing displays (think x-delete-terminal) to still work on such >> builds if the user uses it. > > Which seems to be about _closing_ connections, not about opening too > many of them. It's the leap between the extra connections on the one > hand and closing display not working OTOH that I cannot make. Please > help me fill the dots. Nevermind, I got this thread mixed up with that of that of bug#63555... What I was originally trying to explain was why closing displays can still happen, even on toolkit builds: the user might call `x-delete-terminal'.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 23 May 2023 14:20:33 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue May 23 10:20:33 2023 Received: from localhost ([127.0.0.1]:40081 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1SsL-0005QY-Hq for submit <at> debbugs.gnu.org; Tue, 23 May 2023 10:20:33 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36530) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1SsJ-0005QM-Gz for 63589 <at> debbugs.gnu.org; Tue, 23 May 2023 10:20:31 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1SsE-00025I-5T; Tue, 23 May 2023 10:20:26 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Y3Zvex6kO42h/0zohn2cAj3bvPkNIZLBGOW3IoI0Pd0=; b=ZA7MCScHVd7y Ei4BQ4UgmxhY2s5rAMQsfA9djVztuLwqUoQSIihu8WiMQ0ccsPxzc4J/EqOv/h2MUma1SzfhlGJZg 8YTETYkBOY6rXLPJfa2KvutXQO4u4BAAcrordPLTEyMMnReCI9CMjXVjvpQh9L0pNAKY4j+tEzYPn /aAIFiItKc4oaIoKlMpJTojEuwWCY+Sl7maQeo2VlDVlxJ40QdhFOkrxFRPO5uzE55PnzaksesxJk 695+BYs0QGi5gDd+cB/jt2depxI9mvctnliMrD34vOs+2xO6aTjGYWVOl10ZxuoBHecg94kyjVYj/ QIEdzM7GFv4CEznwYyrr8A==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1SsD-0000xY-9n; Tue, 23 May 2023 10:20:25 -0400 Date: Tue, 23 May 2023 17:20:48 +0300 Message-Id: <83wn0znn7j.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87y1lfuqyb.fsf@HIDDEN> (message from Po Lu on Tue, 23 May 2023 21:18:04 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> <87y1lfuqyb.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Tue, 23 May 2023 21:18:04 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Then I don't understand your objections to the proposed patch. Please > > elaborate. > > Please see the other thread(s), where I explained in detail the two > problems with `gtk_init_check': upon success, it leaves two display > connections open, which is quite fragile, and upon failure, it makes > creating another display impossible, even if a display then becomes > available. I've read all those discussions in real time, and I still don't see the obvious connection. So please humor me with a more detailed and complete explanation of why the last suggested patch somehow causes extra connections open. And let me remind you that your objection, which is what caused my question, was > We want closing displays (think x-delete-terminal) to still work on such > builds if the user uses it. Which seems to be about _closing_ connections, not about opening too many of them. It's the leap between the extra connections on the one hand and closing display not working OTOH that I cannot make. Please help me fill the dots. TIA
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 8b6220338b425f5e95b8ff977685726f; Tue, 23 May 2023 13:18:10 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83y1lfnqwb.fsf@HIDDEN> (Eli Zaretskii's message of "Tue, 23 May 2023 16:01:08 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> <83y1lfnqwb.fsf@HIDDEN> Date: Tue, 23 May 2023 21:18:04 +0800 Message-ID: <87y1lfuqyb.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 445 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Then I don't understand your objections to the proposed patch. Please > elaborate. Please see the other thread(s), where I explained in detail the two problems with `gtk_init_check': upon success, it leaves two display connections open, which is quite fragile, and upon failure, it makes creating another display impossible, even if a display then becomes available. It's the typical misdesign in GTK.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 23 May 2023 13:01:20 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue May 23 09:01:20 2023 Received: from localhost ([127.0.0.1]:38593 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1RdQ-0006LV-SX for submit <at> debbugs.gnu.org; Tue, 23 May 2023 09:01:19 -0400 Received: from eggs.gnu.org ([209.51.188.92]:46474) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1RdP-0006Kh-Jh for 63589 <at> debbugs.gnu.org; Tue, 23 May 2023 09:01:04 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1RdJ-00089K-Mv; Tue, 23 May 2023 09:00:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=Ws37nKOwP5WpU20ByYEQWFgICqt6OBNQHlupvPqVO10=; b=TSeO+Yg4/V3C 1CaZ5vmCIXouaewvL61W4Cel9c88cMKt2EEKyncznp0gflcTYnDl17arDz3JLwnavqDYCbYuuhlEo SCmNxen5/WOh5S2sgmRFGu3YsGJqXSXHV1PxkjMyg+fNvghc+XY+1bgXuzCBb9uL+GWAP5GZ3oD/r ZQRZHnFJMOgblLz0cl7sqofs1+Jxi7rBfekheBycQCbuTUPhdGRFcLuNTayeR9BfY4n4y7NpixDcO yjeQ4iU5kwdjfUcVryxkOk8I9PbVJt0Pj0Owj4SLNW6Q3MS/gm9eBCSb/do8qk1H4x4jh4rdH+jnx tya0Ria5w3bEHHCURcxarw==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1Rd5-0004ZB-9r; Tue, 23 May 2023 09:00:56 -0400 Date: Tue, 23 May 2023 16:01:08 +0300 Message-Id: <83y1lfnqwb.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87cz2rw8pz.fsf@HIDDEN> (message from Po Lu on Tue, 23 May 2023 20:08:56 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> <87cz2rw8pz.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > From: Po Lu <luangruo@HIDDEN> > Cc: tmdmelo@HIDDEN, 63589 <at> debbugs.gnu.org > Date: Tue, 23 May 2023 20:08:56 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Can't we have a separate "delete terminal" function for when Emacs is > > about to exit? Then it doesn't need the extra logic, AFAIU. > > When it is about to exit, Emacs simply does so without closing the > display at all, which is TRT to do. Then I don't understand your objections to the proposed patch. Please elaborate.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 5fcb0e84d02165fad247abf391cdc9ca; Tue, 23 May 2023 12:09:04 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <837cszp9cc.fsf@HIDDEN> (Eli Zaretskii's message of "Tue, 23 May 2023 14:37:23 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> <837cszp9cc.fsf@HIDDEN> Date: Tue, 23 May 2023 20:08:56 +0800 Message-ID: <87cz2rw8pz.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 277 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Can't we have a separate "delete terminal" function for when Emacs is > about to exit? Then it doesn't need the extra logic, AFAIU. When it is about to exit, Emacs simply does so without closing the display at all, which is TRT to do.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 23 May 2023 11:37:06 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue May 23 07:37:06 2023 Received: from localhost ([127.0.0.1]:38408 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q1QK9-0001Ck-Oj for submit <at> debbugs.gnu.org; Tue, 23 May 2023 07:37:05 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58540) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q1QK7-0001CG-Sh for 63589 <at> debbugs.gnu.org; Tue, 23 May 2023 07:37:04 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1QK2-0007oa-Ln; Tue, 23 May 2023 07:36:58 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=h0MLkhihW6g5LwtTUbSEZ66oysVkZlPwrq1uV516PRA=; b=Yoy09AOzaolT o1xpCz1QW8o6iAFnY8teB80UPOwrT1dwN3A+YqWPLIjScDKhYpReE5GcCKxn8BwESLfCXq2jbcfJJ 8irXMUhEzLE4ZHVgDrt30QZeUBUXA23UP2Ml4M6YiTWJzJ7LqL2g5Zd1XBa3rM6oX1gGRTqVtUYEg LvORJpeqJKGWDPZsM27KJMK56ka47rjoJL5dlPs7ThTJnrf7DrG3827akt5TuiaL2UN3Z+HwVAiLM dH7QVUCpJWd3tGDIutP3ztx9zSBLGPUiaixMPfghi7mC/smo5npb4ns95caRPRSphnh945oo0CM0o LdewVyqUhTFuoM2ns8VKqQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q1QK2-0005aO-6C; Tue, 23 May 2023 07:36:58 -0400 Date: Tue, 23 May 2023 14:37:23 +0300 Message-Id: <837cszp9cc.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <874jo3yjly.fsf@HIDDEN> (message from Po Lu on Tue, 23 May 2023 08:30:49 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> <874jo3yjly.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: Eli Zaretskii <eliz@HIDDEN>, 63589 <at> debbugs.gnu.org > Date: Tue, 23 May 2023 08:30:49 +0800 > > We want closing displays (think x-delete-terminal) to still work on such > builds if the user uses it. Can't we have a separate "delete terminal" function for when Emacs is about to exit? Then it doesn't need the extra logic, AFAIU.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 3d627536836239de4ba6cc60f1a20197; Tue, 23 May 2023 00:30:53 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Thiago Melo <tmdmelo@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> (Thiago Melo's message of "Mon, 22 May 2023 19:21:36 +0000") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN> Date: Tue, 23 May 2023 08:30:49 +0800 Message-ID: <874jo3yjly.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 4285 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Eli Zaretskii <eliz@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Thiago Melo <tmdmelo@HIDDEN> writes: >> > > > > What is the kind of situations in which these crashes could happen? >> > > > >> > > > Precisely that described in this bug report: when displays are closed >> > > > and reopened within a short time period. >> > > >> > > What kind of user-level situations could cause this? Is invoking >> > > emacsclient soon after deleting the last visible frame the only one? >> > > And what does "short time period" mean, quantitatively? milliseconds? >> > > seconds? minutes? >> > >> > Sorry, in my experience it seems that the time interval between >> > closing the display and opening it again doesn't matter. It seems to >> > be more about the amount of times that the display is closed and then >> > opened (which is often 3 times for me, for whatever reason). >> > >> > I'm testing it here again with Xvfb and an automation script, with a >> > 10 minutes delay after creating a single graphical frame, and another >> > 10 minutes delay after closing it and before creating a new one. I'll >> > report the results soon. >> > >> > Also, this bug seems more likely to happen when emacs is built without >> > a toolkit (which is was I've been testing so far), since the display >> > is always closed after the last graphical frame is closed. Which made >> > me realize, after looking at frame.c, that this bug might as well join >> > the family of Bug#5802, Bug#21509, Bug#23499, and Bug#27816. >> >> With 10 minutes intervals, I got the X errors previously mentioned by >> the 3rd time the display was opened, and then emacs crashed by the 5th >> time the display was opened. So, assuming that 10 minutes is close >> enough to infinity, we can say that the time interval doesn't matter. > > So, trying to gather everything into a summary here. > > To trigger the bug, all the following conditions must be met: > > - Emacs built without a toolkit > - Emacs built with Cairo-XCB > - Emacs started in daemon mode > - The user closes all graphical frames and creates a new one (manually > or programatically, duration in between doesn't matter, amount of > times is not certain) > > It goes into the `delete_frame' -> `Fdelete_terminal' -> > `x_delete_terminal' -> `XCloseDisplay' path, where cairo-xcb > references are not destroyed, leading to X errors and emacs crashing. > > What else I've tested so far, that didn't trigger the bug: > > - Closing the X Server > - xkill'ing graphical frames > > These two cases go into the `x_connection_closed' -> > `Fdelete_terminal' -> `x_delete_terminal' path, where `XCloseDisplay' > is not called. > > Other builds I've tested, that didn't trigger the bug: > > - GTK + Cairo-XCB > - Lucid + Cairo-XCB > > Which doesn't end up calling XCloseDisplay, since the terminal is not > deleted when the last graphical frame is closed (due to the infamous > longstanding GTK bug, Bug#5802, Bug#21509, Bug#23499, and Bug#27816). > > Considering all the above, I propose this smaller (and potentially > temporary) patch: > > #+begin_src diff > --- a/src/frame.c 2023-05-22 19:52:25.155145242 +0200 > +++ b/src/frame.c 2023-05-22 20:13:41.548566364 +0200 > @@ -2206,14 +2206,15 @@ > /* If needed, delete the terminal that this frame was on. > (This must be done after the frame is killed.) */ > terminal->reference_count--; > -#if defined (USE_X_TOOLKIT) || defined (USE_GTK) > +#if defined (USE_X_TOOLKIT) || defined (USE_GTK) || defined (USE_CAIRO_XCB) > /* FIXME: Deleting the terminal crashes emacs because of a GTK > bug. > https://lists.gnu.org/r/emacs-devel/2011-10/msg00363.html */ > > /* Since a similar behavior was observed on the Lucid and Motif > - builds (see Bug#5802, Bug#21509, Bug#23499, Bug#27816), we now > - don't delete the terminal for these builds either. */ > + builds (see Bug#5802, Bug#21509, Bug#23499, Bug#27816), and builds > + without a toolkit together with Cairo-XCB support (Bug#63589), > + we now don't delete the terminal for these builds either. */ > if (terminal->reference_count == 0 > && (terminal->type == output_x_window > || terminal->type == output_pgtk)) > #+end_src We want closing displays (think x-delete-terminal) to still work on such builds if the user uses it.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Mon, 22 May 2023 19:21:36 +0000
Message-ID: <CABpoeKjWbc+L8AJCVxkTRyF9atAdK1xH0KdqFe5Qx2virq2pNA@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Eli Zaretskii <eliz@HIDDEN>
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> > > > > What is the kind of situations in which these crashes could happen?
> > > >
> > > > Precisely that described in this bug report: when displays are closed
> > > > and reopened within a short time period.
> > >
> > > What kind of user-level situations could cause this? Is invoking
> > > emacsclient soon after deleting the last visible frame the only one?
> > > And what does "short time period" mean, quantitatively? milliseconds?
> > > seconds? minutes?
> >
> > Sorry, in my experience it seems that the time interval between
> > closing the display and opening it again doesn't matter. It seems to
> > be more about the amount of times that the display is closed and then
> > opened (which is often 3 times for me, for whatever reason).
> >
> > I'm testing it here again with Xvfb and an automation script, with a
> > 10 minutes delay after creating a single graphical frame, and another
> > 10 minutes delay after closing it and before creating a new one. I'll
> > report the results soon.
> >
> > Also, this bug seems more likely to happen when emacs is built without
> > a toolkit (which is was I've been testing so far), since the display
> > is always closed after the last graphical frame is closed. Which made
> > me realize, after looking at frame.c, that this bug might as well join
> > the family of Bug#5802, Bug#21509, Bug#23499, and Bug#27816.
>
> With 10 minutes intervals, I got the X errors previously mentioned by
> the 3rd time the display was opened, and then emacs crashed by the 5th
> time the display was opened. So, assuming that 10 minutes is close
> enough to infinity, we can say that the time interval doesn't matter.
So, trying to gather everything into a summary here.
To trigger the bug, all the following conditions must be met:
- Emacs built without a toolkit
- Emacs built with Cairo-XCB
- Emacs started in daemon mode
- The user closes all graphical frames and creates a new one (manually
or programatically, duration in between doesn't matter, amount of
times is not certain)
It goes into the `delete_frame' -> `Fdelete_terminal' ->
`x_delete_terminal' -> `XCloseDisplay' path, where cairo-xcb
references are not destroyed, leading to X errors and emacs crashing.
What else I've tested so far, that didn't trigger the bug:
- Closing the X Server
- xkill'ing graphical frames
These two cases go into the `x_connection_closed' ->
`Fdelete_terminal' -> `x_delete_terminal' path, where `XCloseDisplay'
is not called.
Other builds I've tested, that didn't trigger the bug:
- GTK + Cairo-XCB
- Lucid + Cairo-XCB
Which doesn't end up calling XCloseDisplay, since the terminal is not
deleted when the last graphical frame is closed (due to the infamous
longstanding GTK bug, Bug#5802, Bug#21509, Bug#23499, and Bug#27816).
Considering all the above, I propose this smaller (and potentially
temporary) patch:
#+begin_src diff
--- a/src/frame.c 2023-05-22 19:52:25.155145242 +0200
+++ b/src/frame.c 2023-05-22 20:13:41.548566364 +0200
@@ -2206,14 +2206,15 @@
/* If needed, delete the terminal that this frame was on.
(This must be done after the frame is killed.) */
terminal->reference_count--;
-#if defined (USE_X_TOOLKIT) || defined (USE_GTK)
+#if defined (USE_X_TOOLKIT) || defined (USE_GTK) || defined (USE_CAIRO_XCB)
/* FIXME: Deleting the terminal crashes emacs because of a GTK
bug.
https://lists.gnu.org/r/emacs-devel/2011-10/msg00363.html */
/* Since a similar behavior was observed on the Lucid and Motif
- builds (see Bug#5802, Bug#21509, Bug#23499, Bug#27816), we now
- don't delete the terminal for these builds either. */
+ builds (see Bug#5802, Bug#21509, Bug#23499, Bug#27816), and builds
+ without a toolkit together with Cairo-XCB support (Bug#63589),
+ we now don't delete the terminal for these builds either. */
if (terminal->reference_count == 0
&& (terminal->type == output_x_window
|| terminal->type == output_pgtk))
#+end_src
Caveat: I've tested it, the errors and crash were gone, but it likely
introduces potential leaks in this build (which probably happens with
GTK and Lucid builds too anyway, from what I've seen in the wild). No
free lunch.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 22 May 2023 13:13:06 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 22 09:13:05 2023 Received: from localhost ([127.0.0.1]:34024 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q15LV-0000Bc-Ig for submit <at> debbugs.gnu.org; Mon, 22 May 2023 09:13:05 -0400 Received: from mail-yw1-f180.google.com ([209.85.128.180]:48241) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q15LP-0000Ah-4b for 63589 <at> debbugs.gnu.org; Mon, 22 May 2023 09:13:03 -0400 Received: by mail-yw1-f180.google.com with SMTP id 00721157ae682-561c1ae21e7so79098677b3.0 for <63589 <at> debbugs.gnu.org>; Mon, 22 May 2023 06:12:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1684761173; x=1687353173; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=Q6mET6ObhTjT5JaPWX5iw9qZNBJcIFg8hNGmUgqWgqM=; b=qkkk4s8Vi4telIRfyRuVEgL5vQ4AF1HGqlNqakgb85TsNr7NERnc3rSN1ssYDkuzd8 hRkjssYw8nigPimuwDhbhzbrJFXB+4NOu1L46KlkX9JNbViN2WtGdXdfizwr7+oZtTJE F7we7XsRiGZWrntmuIBkllGNRLqNStQzO+T7ix67hYd2OlR9ZJiILQikzdASvu8s/ajG 80ZhX3g9tCKj62oW2DZAOTj9tntxMd4J4QRl+O9hoWFLtK0J9n81JpWU4yCeM/NVvMld YD9MgUI9v6XAmN3Q+3iIdLtc+SE2t1gcVgHujJEcmLyRPnh+NLbnOeb++vwPBtm5cBN5 NIEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684761173; x=1687353173; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Q6mET6ObhTjT5JaPWX5iw9qZNBJcIFg8hNGmUgqWgqM=; b=HWZcbiViR5/PYeD5Hat5JtDOKca3sWqXxdrgbwmc1zUbVwpdU9vbQP+aMxWImD4I+Q oYL25DH3qYCSFx5PUFv5+SLnDKEZg63XCG7thiO+lNGB6x05BNg5a8B0GQ8KXj/wtsVr m5xJH3LmYF1ex5KT+E/8W30G3FfabSnIfohc5QlOYwH8B2l6NRKuPX0TPTHnp3ocScAO mT5F1YKSIrNjv2JWdkpKYkM1V9LSFRf6l+a1qNPFEWsgG3D+yOCG8lxNUJ/k6u/BntGI Qj1l2Xr1FM5VQ/8uhxWJaLsVj3GXPKW3s8QIKwpIu072atuM9de0BxayPIFqg+nzi5/d 2U4Q== X-Gm-Message-State: AC+VfDy/nPqa0SkVpVzlDFbOC7GMcBRxBgQjwQSGmCbrIef2XBftsPfO QpOL5VXKUMJifol3fx9/p4ROf9OnQmmv8Pbejsk= X-Google-Smtp-Source: ACHHUZ672bSkozfMAIBCGQRr8oio8a5XSAJoFGfh2uJAhp+xG5xeOnqVdbCWKVTGiFCOvz8T2b5WQFQpi8AQWJqbynE= X-Received: by 2002:a0d:f407:0:b0:559:ea89:7c2c with SMTP id d7-20020a0df407000000b00559ea897c2cmr9989454ywf.33.1684761173450; Mon, 22 May 2023 06:12:53 -0700 (PDT) MIME-Version: 1.0 References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> <83wn10ppa1.fsf@HIDDEN> <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> In-Reply-To: <CABpoeKhh3ZJPZp-NXMNcvuvkpmZMAQCsK80E=UVgxTbeQq_pfw@HIDDEN> From: Thiago Melo <tmdmelo@HIDDEN> Date: Mon, 22 May 2023 13:12:16 +0000 Message-ID: <CABpoeKjcisfQNAnj8YZxZCtA8tUX3-qSDLqAwVkMioZyA6AdTQ@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: Eli Zaretskii <eliz@HIDDEN> Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: Po Lu <luangruo@HIDDEN>, 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > > > > What is the kind of situations in which these crashes could happen? > > > > > > Precisely that described in this bug report: when displays are closed > > > and reopened within a short time period. > > > > What kind of user-level situations could cause this? Is invoking > > emacsclient soon after deleting the last visible frame the only one? > > And what does "short time period" mean, quantitatively? milliseconds? > > seconds? minutes? > > Sorry, in my experience it seems that the time interval between > closing the display and opening it again doesn't matter. It seems to > be more about the amount of times that the display is closed and then > opened (which is often 3 times for me, for whatever reason). > > I'm testing it here again with Xvfb and an automation script, with a > 10 minutes delay after creating a single graphical frame, and another > 10 minutes delay after closing it and before creating a new one. I'll > report the results soon. > > Also, this bug seems more likely to happen when emacs is built without > a toolkit (which is was I've been testing so far), since the display > is always closed after the last graphical frame is closed. Which made > me realize, after looking at frame.c, that this bug might as well join > the family of Bug#5802, Bug#21509, Bug#23499, and Bug#27816. With 10 minutes intervals, I got the X errors previously mentioned by the 3rd time the display was opened, and then emacs crashed by the 5th time the display was opened. So, assuming that 10 minutes is close enough to infinity, we can say that the time interval doesn't matter.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Is invoking > emacsclient soon after deleting the last visible frame the only one? > And what does "short time period" mean, quantitatively? milliseconds? > seconds? minutes? Sorry, in my experience it seems that the time interval between closing the display and opening it again doesn't matter. It seems to be more about the amount of times that the display is closed and then opened (which is often 3 times for me, for whatever reason). I'm testing it here again with Xvfb and an automation script, with a 10 minutes delay after creating a single graphical frame, and another 10 minutes delay after closing it and before creating a new one. I'll report the results soon. Also, this bug seems more likely to happen when emacs is built without a toolkit (which is was I've been testing so far), since the display is always closed after the last graphical frame is closed. Which made me realize, after looking at frame.c, that this bug might as well join the family of Bug#5802, Bug#21509, Bug#23499, and Bug#27816.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 22 May 2023 11:40:43 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 22 07:40:43 2023 Received: from localhost ([127.0.0.1]:33730 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q13u7-0005jl-E4 for submit <at> debbugs.gnu.org; Mon, 22 May 2023 07:40:43 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60372) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q13u3-0005jU-1r for 63589 <at> debbugs.gnu.org; Mon, 22 May 2023 07:40:42 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q13tx-0005xH-Bv; Mon, 22 May 2023 07:40:33 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=2vsWFsZF62MB4TNjP2cOO/Htlv+t7OHJN3MJjLefDRQ=; b=Z+WYuZuUorDo +1baTWMKwhd4GGuEWH4z2NWRKFDlgPxv8H1EjZHU3wItrS74+xl0KZRmvf+TGNkOPZ09JFdH0sc5J sltECQuoWNT5qRk/mlEdip183l5StTUuypwB+UNnCQlX8Rm+izLd2M9rfRow8SeJEpHM/ETEL2sgA bduZxjuMp+bhaClkYSgYn2x/V6JeyypPh5OZdvQxlldzBW8axbbhHjA+nuQezVBaLI4CVsWAD9z18 6gafLaAMcRjBD0Dp474uU9w3Q3gCGLuospUETVDvG8LAfAXQdFr4ZhhmzEZ9BX9MHAdjafM9oFXOC pjdMDjvgyHueTe0VgBoF+A==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q13tw-0001eW-Ph; Mon, 22 May 2023 07:40:33 -0400 Date: Mon, 22 May 2023 14:40:54 +0300 Message-Id: <83wn10ppa1.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87pm6sy5rb.fsf@HIDDEN> (message from Po Lu on Mon, 22 May 2023 19:17:44 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> <87pm6sy5rb.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN > Date: Mon, 22 May 2023 19:17:44 +0800 > > Eli Zaretskii <eliz@HIDDEN> writes: > > > Was this bug reported to the relevant Cairo developers? > > I will get to that soon. > > > It's OK, but please also add to NEWS some short notice about this > > option and its potential pitfalls, which explain why it is off by > > default. Perhaps also about its advantages, so that users could make > > up their minds. > > The advantage is that it is moderately faster when Emacs is running over > the network. OK, so let's mention that in NEWS. > > What is the kind of situations in which these crashes could happen? > > Precisely that described in this bug report: when displays are closed > and reopened within a short time period. What kind of user-level situations could cause this? Is invoking emacsclient soon after deleting the last visible frame the only one? And what does "short time period" mean, quantitatively? milliseconds? seconds? minutes?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID cd58e39cace74323eb99f8639766c700; Mon, 22 May 2023 11:17:48 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <835y8kr5re.fsf@HIDDEN> (Eli Zaretskii's message of "Mon, 22 May 2023 13:59:33 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> <835y8kr5re.fsf@HIDDEN> Date: Mon, 22 May 2023 19:17:44 +0800 Message-ID: <87pm6sy5rb.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 619 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Was this bug reported to the relevant Cairo developers? I will get to that soon. > It's OK, but please also add to NEWS some short notice about this > option and its potential pitfalls, which explain why it is off by > default. Perhaps also about its advantages, so that users could make > up their minds. The advantage is that it is moderately faster when Emacs is running over the network. > What is the kind of situations in which these crashes could happen? Precisely that described in this bug report: when displays are closed and reopened within a short time period.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 22 May 2023 10:59:26 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon May 22 06:59:26 2023 Received: from localhost ([127.0.0.1]:33662 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q13G9-00027l-Rf for submit <at> debbugs.gnu.org; Mon, 22 May 2023 06:59:26 -0400 Received: from eggs.gnu.org ([209.51.188.92]:55966) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q13G5-00027V-Im for 63589 <at> debbugs.gnu.org; Mon, 22 May 2023 06:59:24 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q13Fy-00047H-DL; Mon, 22 May 2023 06:59:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=BYVLutjiRKkVmenR8a8Puy3NywyzoxMRA+RtGhLix1A=; b=icM5bdqMX0vJ 89zSjE+pxYe7t7+FQdFi6WaE2Vw8jjCw/Cxr8NFpL7rrSYVOEw6nu7yIGk2Z6Mg/+I/56f1lWdZWL LfK99+KhzswxA9PPntwINgxV1zN2eIL78qT6EL9xSQZPt6lfIfOo5mVNSvo8rlUzDHwaANGTuTNqw zBLBimfKcSrxBKeihPQlu+2blsTMOPk2yZsbljv5BLD1yHqPtSgwk1sW4CXu1/pofwHCUAUFrUqO2 +2kwB2wrMrvVhqvlsUI3+LZ5wAzFGeYoAhhAuVVGwydmGE0WSwZRO6FsZK7ZjAi/dV0HnO2P1PRGi wWlyF8UT8Sz6x7lJ3znWfQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q13Fw-0007Ki-CH; Mon, 22 May 2023 06:59:14 -0400 Date: Mon, 22 May 2023 13:59:33 +0300 Message-Id: <835y8kr5re.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <87edn9ytbo.fsf@HIDDEN> (message from Po Lu on Mon, 22 May 2023 10:48:43 +0800) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> <87wn11yyi4.fsf@HIDDEN> <87edn9ytbo.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > From: Po Lu <luangruo@HIDDEN> > Cc: 63589 <at> debbugs.gnu.org, Thiago Melo <tmdmelo@HIDDEN> > Date: Mon, 22 May 2023 10:48:43 +0800 > > Po Lu <luangruo@HIDDEN> writes: > > > The situation in which this crash occurs is sufficiently uncommon. It's > > the result of another bug in Emacs, hopefully one that should be safe to > > fix. > > Unfortunately, both this crash and its cause (actually, a > RenderBadPicture from a glyph compositing request somewhere within > cairo) are bugs in cairo-xcb itself. Emacs never allows the display > connection to be closed without dereferencing all Cairo resources > created for that display connection, but Cairo keeps its own references > around. Was this bug reported to the relevant Cairo developers? > The only reasonable solution is to disable the use of XCB surfaces by > default. Is this OK for the release branch? It's OK, but please also add to NEWS some short notice about this option and its potential pitfalls, which explain why it is off by default. Perhaps also about its advantages, so that users could make up their minds. What is the kind of situations in which these crashes could happen?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Mon, 22 May 2023 02:48:51 +0000 (UTC)
From: Po Lu <luangruo@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical
frames via emacsclient when compiled with cairo-xcb
In-Reply-To: <87wn11yyi4.fsf@HIDDEN> (Po Lu's message of "Mon, 22 May 2023
08:56:51 +0800")
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Date: Mon, 22 May 2023 10:48:43 +0800
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Po Lu <luangruo@HIDDEN> writes:
> The situation in which this crash occurs is sufficiently uncommon. It's
> the result of another bug in Emacs, hopefully one that should be safe to
> fix.
Unfortunately, both this crash and its cause (actually, a
RenderBadPicture from a glyph compositing request somewhere within
cairo) are bugs in cairo-xcb itself. Emacs never allows the display
connection to be closed without dereferencing all Cairo resources
created for that display connection, but Cairo keeps its own references
around.
The only reasonable solution is to disable the use of XCB surfaces by
default. Is this OK for the release branch?
diff --git a/configure.ac b/configure.ac
index 95167329c28..d7296168ff9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -459,6 +459,7 @@ AC_DEFUN
OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
OPTION_DEFAULT_ON([cairo],[don't compile with Cairo drawing])
+OPTION_DEFAULT_OFF([cairo-xcb], [use XCB surfaces for Cairo support])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_OFF([imagemagick],[compile with ImageMagick image support])
OPTION_DEFAULT_ON([native-image-api], [don't use native image APIs (GDI+ on Windows)])
@@ -3571,14 +3572,19 @@ AC_DEFUN
CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
EMACS_CHECK_MODULES([CAIRO], [$CAIRO_MODULE])
if test $HAVE_CAIRO = yes; then
- CAIRO_XCB_MODULE="cairo-xcb >= $CAIRO_REQUIRED"
- EMACS_CHECK_MODULES([CAIRO_XCB], [$CAIRO_XCB_MODULE])
- if test $HAVE_CAIRO_XCB = yes; then
- CAIRO_CFLAGS="$CAIRO_CFLAGS $CAIRO_XCB_CFLAGS"
- CAIRO_LIBS="$CAIRO_LIBS $CAIRO_XCB_LIBS"
- AC_DEFINE([USE_CAIRO_XCB], [1],
- [Define to 1 if cairo XCB surfaces are available.])
- fi
+ dnl Cairo XCB support is disabled by default, as the Cairo XCB
+ dnl backend itself seems to be buggy: multiple Cairo devices can
+ dnl be created for the same visual on the same connection, and
+ dnl the devices are never destroyed, even when all references go
+ dnl away.
+ AS_IF([test "x$with_cairo_xcb" = "xyes"], [
+ CAIRO_XCB_MODULE="cairo-xcb >= $CAIRO_REQUIRED"
+ EMACS_CHECK_MODULES([CAIRO_XCB], [$CAIRO_XCB_MODULE])
+ AS_IF([test "x$HAVE_CAIRO_XCB" = "xyes"], [
+ CAIRO_CFLAGS="$CAIRO_CFLAGS $CAIRO_XCB_CFLAGS"
+ CAIRO_LIBS="$CAIRO_LIBS $CAIRO_XCB_LIBS"
+ AC_DEFINE([USE_CAIRO_XCB], [1],
+ [Define to 1 if cairo XCB surfaces are available.])])])
AC_DEFINE([USE_CAIRO], [1], [Define to 1 if using cairo.])
CFLAGS="$CFLAGS $CAIRO_CFLAGS"
LIBS="$LIBS $CAIRO_LIBS"
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Mon, 22 May 2023 01:05:45 +0000 (UTC)
From: Po Lu <luangruo@HIDDEN>
To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical
frames via emacsclient when compiled with cairo-xcb
In-Reply-To: <CABpoeKix_RZquad+Gh2ou=7MHqOM0E7Qr1yA30Oy0Lde09Bc-g@HIDDEN>
(Thiago Melo's message of "Sun, 21 May 2023 16:09:40 +0000")
References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
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<CABpoeKix_RZquad+Gh2ou=7MHqOM0E7Qr1yA30Oy0Lde09Bc-g@HIDDEN>
Date: Mon, 22 May 2023 09:05:41 +0800
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Thiago Melo <tmdmelo@HIDDEN> writes:
> I'm happy to contribute, but I'm sorry that I might not have much time
> to do it right now. :(
>
> We can do it slowly, but just in case I'm not around, I'm leaving here
> one way to trigger this bug more automatically. After starting emacs
> (compiled with cairo-xcb) in daemon mode, the bug can be triggered via
> a shell script like this:
>
>
> ```
> # some elisp code to close all graphical frames
> ELISP="(mapcar (lambda (x) (when (frame-parameter x 'display)
> (delete-frame x))) (frame-list))"
>
> # repeatedly create graphical frames and close them all
> for k in $(seq 10); do
> emacsclient -c -n -a /bin/false &&
> sleep 1 &&
> emacsclient -e "${ELISP}"
> done
> ```
>
>
> In any case, I'll reply you about the errors in the other message in
> this thread, if you don't mind.
I will try to look into this, thanks.
> The thing is, with an emacs daemon, after I close the last graphical
> frame, x_delete_terminal is always called and the display is always
> closed. It happens no matter if I build it with or without cairo, with
> errors or without errors.
Which X toolkit did you build Emacs with?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID 3793d0c21ecac2d4b0ea2a9b5e66f7ac; Mon, 22 May 2023 00:56:55 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <83bkidr37i.fsf@HIDDEN> (Eli Zaretskii's message of "Sun, 21 May 2023 20:42:25 +0300") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> <83o7mdrc3y.fsf@HIDDEN> <CABpoeKgb9Nn2UGWN8dJ4SPzdrzmLueOtkOxY-T743MFMU8FyqQ@HIDDEN> <83bkidr37i.fsf@HIDDEN> Date: Mon, 22 May 2023 08:56:51 +0800 Message-ID: <87wn11yyi4.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 412 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, Thiago Melo <tmdmelo@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Which means we must fix this in Emacs 29.1. If the right fix is too > unsafe for that, perhaps the alternative is to make the xcb surfaces > support be off by default, unless Emacs is explicitly configured to > use it. The situation in which this crash occurs is sufficiently uncommon. It's the result of another bug in Emacs, hopefully one that should be safe to fix.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Sun, 21 May 2023 18:25:17 +0000
Message-ID: <CABpoeKiq4+KMyANCr4Wx0A+P6=jE_qRaur_fGEq0+f1BB4RR0g@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
To: Po Lu <luangruo@HIDDEN>
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> > Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
> > event=0x7fffffff71c0) at xterm.c:26126
> > 26126 if (event->error_code == BadName)
> > (gdb) p *event
> > $1 = {
> > type = 0,
> > display = 0x55555654f4f0,
> > resourceid = 54526136,
> > serial = 706,
> > error_code = 14 '\016',
> > request_code = 1 '\001',
> > minor_code = 0 '\000'
> > }
> > (gdb) continue
> > Continuing.
>
> This means Emacs tried to create a window with an invalid XID. Would
> you please show the backtrace from this error, now that Emacs is
> operating synchronously?
There you go:
$ gdb --args ./emacs-cairo-xcb -xrm "emacs.synchronous: true" -Q
--fg-daemon=test
GNU gdb (Debian 10.1-1.7) 10.1.90.20210103-git
Copyright (C) 2021 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./emacs-cairo-xcb...
SIGINT is used by the debugger.
Are you sure you want to change it? (y or n) [answered Y; input not
from terminal]
DISPLAY = :0
TERM = xterm-256color
Breakpoint 1 at 0x1de341: file emacs.c, line 427.
Breakpoint 2 at 0x1ad020: file xterm.c, line 26126.
(gdb) run
Starting program: /dev/shm/src/emacs-29.0.91/src/emacs-cairo-xcb -xrm
emacs.synchronous:\ true -Q --fg-daemon=test
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Starting Emacs daemon.
Breakpoint 2, x_error_quitter (display=0x55555629dca0,
event=0x7fffffff71a0) at xterm.c:26126
26126 if (event->error_code == BadName)
(gdb) p *event
$1 = {
type = 0,
display = 0x55555629dca0,
resourceid = 41943224,
serial = 707,
error_code = 14 '\016',
request_code = 1 '\001',
minor_code = 0 '\000'
}
(gdb) backtrace
#0 x_error_quitter (display=0x55555629dca0, event=0x7fffffff71a0) at
xterm.c:26126
#1 0x0000555555701000 in x_error_handler (display=0x55555629dca0,
event=0x7fffffff71a0) at xterm.c:26107
#2 0x00007ffff7e6e864 in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#3 0x00007ffff7e6b327 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#4 0x00007ffff7e6b3c5 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#5 0x00007ffff7e6bffa in _XEventsQueued () from
/usr/lib/x86_64-linux-gnu/libX11.so.6
#6 0x00007ffff7e5d931 in XPending () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7 0x00005555556fe44b in XTread_socket (terminal=0x55555628c1c0,
hold_quit=0x7fffffff7440) at xterm.c:24773
#8 0x000055555574d48d in gobble_input () at keyboard.c:7426
#9 0x000055555574d97a in handle_async_input () at keyboard.c:7657
#10 0x000055555574d999 in process_pending_signals () at keyboard.c:7671
#11 0x000055555574d9d9 in unblock_input_to (level=0) at keyboard.c:7686
#12 0x000055555574d9fd in unblock_input () at keyboard.c:7705
#13 0x00005555558da91b in ftcrfont_text_extents (font=0x5555561339c0,
code=0x7fffffff7608, nglyphs=1, metrics=0x555555f79a18 <metrics>)
at ftcrfont.c:430
#14 0x000055555561df02 in get_per_char_metric (font=0x5555561339c0,
char2b=0x7fffffff7608) at xdisp.c:29776
#15 0x0000555555626ec6 in gui_produce_glyphs (it=0x7fffffff7760) at
xdisp.c:31946
#16 0x0000555555625acb in produce_special_glyphs (it=0x7fffffff8ba0,
what=IT_CONTINUATION) at xdisp.c:31556
#17 0x00005555555c5790 in init_iterator (it=0x7fffffff8ba0,
w=0x55555628c650, charpos=-1, bytepos=-1, row=0x0,
base_face_id=DEFAULT_FACE_ID)
at xdisp.c:3321
#18 0x00005555555e70e7 in gui_consider_frame_title
(frame=XIL(0x55555628c3e5)) at xdisp.c:13566
#19 0x00005555555e7690 in prepare_menu_bars () at xdisp.c:13682
#20 0x00005555555ef199 in redisplay_internal () at xdisp.c:16602
#21 0x00005555555f1235 in redisplay_preserve_echo_area (from_where=13)
at xdisp.c:17359
#22 0x0000555555888aab in Fdelete_process
(process=XIL(0x5555562de7cd)) at process.c:1120
#23 0x00005555558256e0 in funcall_subr (subr=0x555555f71320
<Sdelete_process>, numargs=1, args=0x7ffff5bff2b0) at eval.c:3034
#24 0x00005555558802bf in exec_byte_code (fun=XIL(0x7ffff657b8d5),
args_template=514, nargs=2, args=0x7ffff5bff2c0) at bytecode.c:809
#25 0x0000555555825a66 in fetch_and_exec_byte_code
(fun=XIL(0x5555560c6cbd), args_template=514, nargs=2,
args=0x7fffffffbc38) at eval.c:3081
#26 0x0000555555825ed2 in funcall_lambda (fun=XIL(0x5555560c6cbd),
nargs=2, arg_vector=0x7fffffffbc38) at eval.c:3153
#27 0x00005555558251bf in funcall_general (fun=XIL(0x5555560c6cbd),
numargs=2, args=0x7fffffffbc38) at eval.c:2945
#28 0x00005555558254c1 in Ffuncall (nargs=3, args=0x7fffffffbc30) at eval.c:2995
#29 0x0000555555824727 in Fapply (nargs=2, args=0x7fffffffbcf0) at eval.c:2666
#30 0x0000555555824dd9 in apply1 (fn=XIL(0xd99d0),
arg=XIL(0x5555563b0dd3)) at eval.c:2882
#31 0x0000555555894e46 in read_process_output_call
(fun_and_args=XIL(0x5555563b0de3)) at process.c:6070
#32 0x0000555555820bb0 in internal_condition_case_1
(bfun=0x555555894db9 <read_process_output_call>,
arg=XIL(0x5555563b0de3), handlers=XIL(0x90),
hfun=0x555555894e48 <read_process_output_error_handler>) at eval.c:1498
#33 0x00005555558957b0 in read_and_dispose_of_process_output (p=0x5555562de7c8,
chars=0x7fffffffbe10 "-env SHELL=/bin/bash -env
SESSION_MANAGER=local/debian-x250:@/tmp/.ICE-unix/1634,unix/debian-x250:/tmp/.ICE-unix/1634
-env WINDOWID=23179042 -env QT_ACCESSIBILITY=1 -env
COLORTERM=truecolor -env XDG_C"..., nbytes=2923,
coding=0x5555560f5840) at process.c:6294
#34 0x0000555555895390 in read_process_output
(proc=XIL(0x5555562de7cd), channel=5) at process.c:6204
#35 0x0000555555894585 in wait_reading_process_output (time_limit=0,
nsecs=0, read_kbd=-1, do_display=true, wait_for_cell=XIL(0),
wait_proc=0x0, just_wait_proc=0) at process.c:5888
#36 0x000055555574355b in kbd_buffer_get_event (kbp=0x7fffffffd4b8,
used_mouse_menu=0x7fffffffdb5f, end_time=0x0) at keyboard.c:4012
#37 0x000055555573ded8 in read_event_from_main_queue (end_time=0x0,
local_getcjmp=0x7fffffffd930, used_mouse_menu=0x7fffffffdb5f) at
keyboard.c:2279
#38 0x000055555573e288 in read_decoded_event_from_main_queue
(end_time=0x0, local_getcjmp=0x7fffffffd930, prev_event=XIL(0),
used_mouse_menu=0x7fffffffdb5f) at keyboard.c:2343
#39 0x000055555574042e in read_char (commandflag=1,
map=XIL(0x5555563a8f33), prev_event=XIL(0),
used_mouse_menu=0x7fffffffdb5f, end_time=0x0) at keyboard.c:2973
#40 0x0000555555754a7b in read_key_sequence (keybuf=0x7fffffffdcf0,
prompt=XIL(0), dont_downcase_last=false, can_return_switch_frame=true,
fix_current_buffer=true, prevent_redisplay=false) at keyboard.c:10083
#41 0x000055555573b05a in command_loop_1 () at keyboard.c:1384
#42 0x0000555555820ad5 in internal_condition_case (bfun=0x55555573ac30
<command_loop_1>, handlers=XIL(0x90), hfun=0x55555573a09c <cmd_error>)
at eval.c:1474
#43 0x000055555573a819 in command_loop_2 (handlers=XIL(0x90)) at keyboard.c:1133
#44 0x000055555581fd0e in internal_catch (tag=XIL(0xf240),
func=0x55555573a7f2 <command_loop_2>, arg=XIL(0x90)) at eval.c:1197
#45 0x000055555573a7ae in command_loop () at keyboard.c:1111
#46 0x0000555555739b5f in recursive_edit_1 () at keyboard.c:720
#47 0x0000555555739d7c in Frecursive_edit () at keyboard.c:803
#48 0x000055555573556a in main (argc=5, argv=0x7fffffffe238) at emacs.c:2529
Lisp Backtrace:
"redisplay_internal (C function)" (0x0)
"delete-process" (0xf5bff2b0)
"server-delete-client" (0xf5bff240)
"server-execute" (0xf5bff1a0)
0x5606ddf0 PVEC_COMPILED
"server-execute-continuation" (0xf5bff0c8)
"server-process-filter" (0xffffbc38)
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Sun, 21 May 2023 16:09:40 +0000
Message-ID: <CABpoeKix_RZquad+Gh2ou=7MHqOM0E7Qr1yA30Oy0Lde09Bc-g@HIDDEN>
Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames
via emacsclient when compiled with cairo-xcb
To: Po Lu <luangruo@HIDDEN>
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(sorry, forgot to hit reply all)
> I would like to know the details of the X error that caused the display
> connection to be closed in the first place
I'm happy to contribute, but I'm sorry that I might not have much time
to do it right now. :(
We can do it slowly, but just in case I'm not around, I'm leaving here
one way to trigger this bug more automatically. After starting emacs
(compiled with cairo-xcb) in daemon mode, the bug can be triggered via
a shell script like this:
```
# some elisp code to close all graphical frames
ELISP="(mapcar (lambda (x) (when (frame-parameter x 'display)
(delete-frame x))) (frame-list))"
# repeatedly create graphical frames and close them all
for k in $(seq 10); do
emacsclient -c -n -a /bin/false &&
sleep 1 &&
emacsclient -e "${ELISP}"
done
```
In any case, I'll reply you about the errors in the other message in
this thread, if you don't mind.
> this change is too large for
> the release branch, but we may be able to fix the X error.
No problem. At least, I wanted to point out one potential direction
for the solution. By the way, I've done my FSF Copyright assignment
already.
> Also, please keep in mind that our policy is to place a space between
> the function identifier and the opening paren of its parameter list in
> function calls
Thank you, I'll keep it in mind.
> and that the device should probably be destroyed even if
> the display no longer exists
It's puzzling, isn't it? The cairo dev also said it should be
destroyed, but that sometimes it doesn't happen for cairo-xcb when (1)
there's a leak somewhere or (2) during some non-leak cases they didn't
specify.
> which usually happens when
> x_delete_terminal is called in response to an IO error.
Here is one thing that I'd like to be clarified about: it seems to me
that you don't expect the display to be closed, as you mentioned
before:
> However,
> this crash happens when a display connection is closed, which is not
> common in normal use. As the backtraces you attached show, an unrelated
> X error is what caused a connection to be closed.
The thing is, with an emacs daemon, after I close the last graphical
frame, x_delete_terminal is always called and the display is always
closed. It happens no matter if I build it with or without cairo, with
errors or without errors.
So I probably misunderstood something here, please do let me know if I
did. Or these things only happens with my computer. I also would love
to know if anyone else is able to replicate this issue.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 21 May 2023 14:30:00 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun May 21 10:30:00 2023 Received: from localhost ([127.0.0.1]:60944 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q0k4N-00070O-PH for submit <at> debbugs.gnu.org; Sun, 21 May 2023 10:30:00 -0400 Received: from eggs.gnu.org ([209.51.188.92]:36396) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1q0k4K-000709-9U for 63589 <at> debbugs.gnu.org; Sun, 21 May 2023 10:29:57 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q0k4E-0005AX-V8; Sun, 21 May 2023 10:29:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=ABJuDrRyv+ORFTspKKvTYcUoFcagflnt0XYdTvXuXNM=; b=TSK/KzKT3has o7i8aHlX3myneoL8yVDQKkz8jVl4f20eEf0WhU7hT5RZ/NVJZ+lWyfenQf7CsfYp+5Mz20bh5VsB7 wjf+R+Y5FvVGBlfVSwy/KJ5o96ISDtmFqW0AAMTtYREkti7sHwoVCBNoBa33ookftDznXT8JWlrwY 5iuZHFA0xm0ciSMRnKp8/n8KnALglVgD7rSXL2DttRN+qsefxDdXv0WKVEH7F/rXkIknL/k2drzjQ ga3lOmN851+qF4Vtj3HR8IHXRFF/LuUiOsUGG4THDHZ4aHKwrSlUfHdsRw9dsRe+uamFFjmhJNWce Uey2ev080Vy96YmcHS5tYQ==; Received: from [87.69.77.57] (helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1q0k4E-0004LU-Ek; Sun, 21 May 2023 10:29:50 -0400 Date: Sun, 21 May 2023 17:30:09 +0300 Message-Id: <83o7mdrc3y.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Po Lu <luangruo@HIDDEN> In-Reply-To: <871qj9246a.fsf@HIDDEN> (bug-gnu-emacs@HIDDEN) Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> <871qj9246a.fsf@HIDDEN> X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org, tmdmelo@HIDDEN X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) > Cc: 63589 <at> debbugs.gnu.org > Date: Sun, 21 May 2023 21:40:45 +0800 > From: Po Lu via "Bug reports for GNU Emacs, > the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN> > > Thiago Melo <tmdmelo@HIDDEN> writes: > > > Here's a patch to fix this issue. It was created on top of the > > emacs-29 branch, commit 6b60c81. > > > > It's based on the suggestion from the cairo mailing list (see the link > > I sent in my original message here). It ensures that the cairo device > > associated with the cairo-xcb surfaces in the display is destroyed > > before closing the display. > > > > It can probably be improved. It could even be extended to handle > > cairo-xlib. In the cairo mailing list, they mentioned one corner case > > where the xlib device is not properly destroyed: when cairo is > > unloaded before the X11 connection is closed. > > I would like to know the details of the X error that caused the display > connection to be closed in the first place: this change is too large for > the release branch, but we may be able to fix the X error. What I would like to understand is how come this didn't happen until now? The Cairo build is the default since Emacs 28, is it not?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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Hermes SMTP Server) with ESMTPA ID e852cf5880ab1b58cfddc29c6d13656d; Sun, 21 May 2023 13:40:49 +0000 (UTC) From: Po Lu <luangruo@HIDDEN> To: Thiago Melo <tmdmelo@HIDDEN> Subject: Re: bug#63589: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb In-Reply-To: <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> (Thiago Melo's message of "Sat, 20 May 2023 22:47:17 +0000") References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN> <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> Date: Sun, 21 May 2023 21:40:45 +0800 Message-ID: <871qj9246a.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Mailer: WebService/1.1.21495 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo Content-Length: 1174 X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 Cc: 63589 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Thiago Melo <tmdmelo@HIDDEN> writes: > Here's a patch to fix this issue. It was created on top of the > emacs-29 branch, commit 6b60c81. > > It's based on the suggestion from the cairo mailing list (see the link > I sent in my original message here). It ensures that the cairo device > associated with the cairo-xcb surfaces in the display is destroyed > before closing the display. > > It can probably be improved. It could even be extended to handle > cairo-xlib. In the cairo mailing list, they mentioned one corner case > where the xlib device is not properly destroyed: when cairo is > unloaded before the X11 connection is closed. I would like to know the details of the X error that caused the display connection to be closed in the first place: this change is too large for the release branch, but we may be able to fix the X error. Also, please keep in mind that our policy is to place a space between the function identifier and the opening paren of its parameter list in function calls, and that the device should probably be destroyed even if the display no longer exists, which usually happens when x_delete_terminal is called in response to an IO error.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Po Lu <luangruo@HIDDEN>
To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
In-Reply-To: <CABpoeKi+g+pD=nYp53KW8qu040JeXCF622Y2xQFA7C0-8L0CMw@HIDDEN>
(Thiago Melo's message of "Sat, 20 May 2023 11:47:34 +0000")
References: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
<87sfbr3hbu.fsf@HIDDEN>
<CABpoeKi+g+pD=nYp53KW8qu040JeXCF622Y2xQFA7C0-8L0CMw@HIDDEN>
Date: Sun, 21 May 2023 08:42:31 +0800
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Thiago Melo <tmdmelo@HIDDEN> writes:
> I must also highlight that the following errors in the backtrace
> happen one right after the other (i.e., I'm unable to interact with
> the zombie emacs frame in between).
Yes, I know. Thanks.
> ```
> Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
> event=0x7fffffff71c0) at xterm.c:26126
> 26126 if (event->error_code == BadName)
> (gdb) p *event
> $1 = {
> type = 0,
> display = 0x55555654f4f0,
> resourceid = 54526136,
> serial = 706,
> error_code = 14 '\016',
> request_code = 1 '\001',
> minor_code = 0 '\000'
> }
> (gdb) continue
> Continuing.
This means Emacs tried to create a window with an invalid XID. Would
you please show the backtrace from this error, now that Emacs is
operating synchronously?
> Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
> event=0x7fffffff6a50) at xterm.c:26126
> 26126 if (event->error_code == BadName)
> (gdb) p *event
> $2 = {
> type = 0,
> display = 0x55555654f4f0,
> resourceid = 54526136,
> serial = 707,
> error_code = 3 '\003',
> request_code = 8 '\b',
> minor_code = 0 '\000'
> }
> (gdb) continue
> Continuing.
>
> Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
> event=0x7fffffff6a50) at xterm.c:26126
> 26126 if (event->error_code == BadName)
> (gdb) p *event
> $3 = {
> type = 0,
> display = 0x55555654f4f0,
> resourceid = 54526136,
> serial = 708,
> error_code = 3 '\003',
> request_code = 12 '\f',
> minor_code = 0 '\000'
> }
> (gdb) continue
> Continuing.
> ```
These further errors are simply a result of the invalid window being
used.
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.Received: (at 63589) by debbugs.gnu.org; 20 May 2023 22:48:03 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat May 20 18:48:03 2023 Received: from localhost ([127.0.0.1]:59510 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1q0VMp-0008AY-0N for submit <at> debbugs.gnu.org; Sat, 20 May 2023 18:48:03 -0400 Received: from mail-yw1-f174.google.com ([209.85.128.174]:52577) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <tmdmelo@HIDDEN>) id 1q0VMn-00089O-2G for 63589 <at> debbugs.gnu.org; Sat, 20 May 2023 18:48:01 -0400 Received: by mail-yw1-f174.google.com with SMTP id 00721157ae682-561c1768bacso62192737b3.1 for <63589 <at> debbugs.gnu.org>; Sat, 20 May 2023 15:48:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1684622875; x=1687214875; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=8kqSiolSo290XjZq2YzCmzufpLRV2bNVj1xrw7JGFkU=; b=JC1re0q7NIYsdFJXmOT5N3uVKNojmTEcV8e6vIlN+a0HJDcKWrtEiLKTU+pOwVZknN jzG2YUrfuVXDrJ6Hp+WpkR3L2baEULdH46dRvfcugUhXMPpFJR5DQBCKQglzd7otIrXB y4MGxrrXiU5UF24IWbK0knVB2IwhJja8H3RmwbJ8elER3pTZrbcmDgWLTU25XckzqiBT Wf/y0qp2pgeq3zzeVwmIOG8juuAtssg7hDX12LYa2a7tInRmRKVmBU2kEG0wy+QwULhW 6qBBQ0rBtfKVrK8dKiImBjDIZMO+n80w2BAv9+DzwS/XKo6CaelQUkFFIPA9LnN+flVy U+3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684622875; x=1687214875; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=8kqSiolSo290XjZq2YzCmzufpLRV2bNVj1xrw7JGFkU=; b=KNPYD2NdeOpldWjbsuFgyj7oDob/YIrWgx7thXP624q7FChWTecKxkTyoBEs9Brb9i DClqysqUTenf0lJu1jmy8+25XF7RrNd7DEsHnUnMbLkFtA6Yr4zYEDnCUZbkmyaoMNSC S1l5+L0kHzMzn+MLsqpLnj/jm4xyGvi107uXCIWLGQqx9KU6R7VDRyouMGiFhL/aDqhL 23kX9rR918RRukXeisO560acyi6RZ5WfHiHD1qoN/eYRyquPdhBl0y3nzT0o0cjzCsv0 k4uIQUSCVGJDC3wt93RlW41XSK/Ow+A6HGSBPFmbbkafI/b9ncC4i5VJ5mY+QPKBZ+X4 xvKQ== X-Gm-Message-State: AC+VfDzRofag8Ygb4Dhc5sgCn//Eklqfd0eyju2dfE88ApibHZXzsjIM XVyFeK+k1qjhPRZWVwL74EHEnCyVh1+pBCK3dTWNmVPy65o= X-Google-Smtp-Source: ACHHUZ5lnEiS6KxNh07w4NjnI1AT+Y5fxZccOkQWOVhj7tqRdOkj0ma8HjPHjoymvH53+uznKDU1d7uLKweRem9eGGY= X-Received: by 2002:a0d:d901:0:b0:55a:ad64:1b62 with SMTP id b1-20020a0dd901000000b0055aad641b62mr6458599ywe.16.1684622874232; Sat, 20 May 2023 15:47:54 -0700 (PDT) MIME-Version: 1.0 From: Thiago Melo <tmdmelo@HIDDEN> Date: Sat, 20 May 2023 22:47:17 +0000 Message-ID: <CABpoeKgowRCerUH0V6G86bs2EkFDGbYqN=OgZnM+cWz08os4QQ@HIDDEN> Subject: [PATCH] 29.0.91; crash after creating graphical frames via emacsclient when compiled with cairo-xcb To: 63589 <at> debbugs.gnu.org Content-Type: multipart/mixed; boundary="0000000000000004cf05fc27d4cc" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 63589 X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) --0000000000000004cf05fc27d4cc Content-Type: text/plain; charset="UTF-8" Here's a patch to fix this issue. It was created on top of the emacs-29 branch, commit 6b60c81. It's based on the suggestion from the cairo mailing list (see the link I sent in my original message here). It ensures that the cairo device associated with the cairo-xcb surfaces in the display is destroyed before closing the display. It can probably be improved. It could even be extended to handle cairo-xlib. In the cairo mailing list, they mentioned one corner case where the xlib device is not properly destroyed: when cairo is unloaded before the X11 connection is closed. --0000000000000004cf05fc27d4cc Content-Type: text/x-patch; charset="US-ASCII"; name="bugfix-63589.patch" Content-Disposition: attachment; filename="bugfix-63589.patch" Content-Transfer-Encoding: base64 Content-ID: <f_lhwkv92b0> X-Attachment-Id: f_lhwkv92b0 RnJvbSBkNjJiNjVkMmExNGFhMzQ4YmQ2OWJjNzUzNjM1NzIyNWYyNTcxYzE4IE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBUaGlhZ28gTWVsbyA8dG1kbWVsb0BnbWFpbC5jb20+CkRhdGU6 IFNhdCwgMjAgTWF5IDIwMjMgMTg6NTI6MDMgKzAyMDAKU3ViamVjdDogW1BBVENIXSBGaXggQnVn IzYzNTg5LgoKLS0tCiBzcmMveHRlcm0uYyB8IDE2ICsrKysrKysrKysrKysrKysKIHNyYy94dGVy bS5oIHwgIDYgKysrKysrCiAyIGZpbGVzIGNoYW5nZWQsIDIyIGluc2VydGlvbnMoKykKCmRpZmYg LS1naXQgYS9zcmMveHRlcm0uYyBiL3NyYy94dGVybS5jCmluZGV4IGU5ODFhMzYuLjdlZDRkZmMg MTAwNjQ0Ci0tLSBhL3NyYy94dGVybS5jCisrKyBiL3NyYy94dGVybS5jCkBAIC01ODA2LDEwICs1 ODA2LDE2IEBAIHhfYmVnaW5fY3JfY2xpcCAoc3RydWN0IGZyYW1lICpmLCBHQyBnYykKICAgICAg IGNhaXJvX3N1cmZhY2VfdCAqc3VyZmFjZTsKICNpZmRlZiBVU0VfQ0FJUk9fWENCX1NVUkZBQ0UK ICAgICAgIGlmIChGUkFNRV9ESVNQTEFZX0lORk8gKGYpLT54Y2JfdmlzdWFsKQorICAgICAgICB7 CiAJc3VyZmFjZSA9IGNhaXJvX3hjYl9zdXJmYWNlX2NyZWF0ZSAoRlJBTUVfRElTUExBWV9JTkZP IChmKS0+eGNiX2Nvbm5lY3Rpb24sCiAJCQkJCSAgICAoeGNiX2RyYXdhYmxlX3QpIEZSQU1FX1hf UkFXX0RSQVdBQkxFIChmKSwKIAkJCQkJICAgIEZSQU1FX0RJU1BMQVlfSU5GTyAoZiktPnhjYl92 aXN1YWwsCiAJCQkJCSAgICB3aWR0aCwgaGVpZ2h0KTsKKwljYWlyb19kZXZpY2VfdCAqY2Fpcm9f ZGV2aWNlID0gY2Fpcm9fc3VyZmFjZV9nZXRfZGV2aWNlKHN1cmZhY2UpOworCWlmIChjYWlyb19k ZXZpY2VfZ2V0X3R5cGUoY2Fpcm9fZGV2aWNlKSA9PSBDQUlST19ERVZJQ0VfVFlQRV9YQ0IKKwkg ICAgJiYgIUZSQU1FX0RJU1BMQVlfSU5GTyAoZiktPmNhaXJvX2RldmljZSkKKwkgIEZSQU1FX0RJ U1BMQVlfSU5GTyAoZiktPmNhaXJvX2RldmljZSA9IGNhaXJvX2RldmljZV9yZWZlcmVuY2UoY2Fp cm9fZGV2aWNlKTsKKyAgICAgICAgfQogICAgICAgZWxzZQogI2VuZGlmCiAJc3VyZmFjZSA9IGNh aXJvX3hsaWJfc3VyZmFjZV9jcmVhdGUgKEZSQU1FX1hfRElTUExBWSAoZiksCkBAIC0zMDg0MSw2 ICszMDg0NywxNiBAQCB4X2RlbGV0ZV90ZXJtaW5hbCAoc3RydWN0IHRlcm1pbmFsICp0ZXJtaW5h bCkKIAkgY2xvc2luZyBhbGwgdGhlIGRpc3BsYXlzLiAgKi8KICAgICAgIFhybURlc3Ryb3lEYXRh YmFzZSAoZHB5aW5mby0+cmRiKTsKICNlbmRpZgorI2lmZGVmIFVTRV9DQUlST19YQ0JfU1VSRkFD RQorICAgICAgLyogRW5zdXJlIHRoYXQgdGhlIGNhaXJvIGRldmljZSBpcyBkZXN0cm95ZWQgYmVm b3JlIGNsb3NpbmcKKyAgICAgICAgIGNvbm5lY3Rpb24gKEJ1ZyM2MzU4OSkuICAqLworICAgICAg aWYgKGRweWluZm8tPmNhaXJvX2RldmljZSkKKwl7CisJICBjYWlyb19kZXZpY2VfZmluaXNoKGRw eWluZm8tPmNhaXJvX2RldmljZSk7CisJICBjYWlyb19kZXZpY2VfZGVzdHJveShkcHlpbmZvLT5j YWlyb19kZXZpY2UpOworCSAgZHB5aW5mby0+Y2Fpcm9fZGV2aWNlID0gTlVMTDsKKwl9CisjZW5k aWYKICNpZmRlZiBVU0VfR1RLCiAgICAgICB4Z19kaXNwbGF5X2Nsb3NlIChkcHlpbmZvLT5kaXNw bGF5KTsKICNlbHNlCmRpZmYgLS1naXQgYS9zcmMveHRlcm0uaCBiL3NyYy94dGVybS5oCmluZGV4 IDg4MzQzNDYuLmJkYzU0NTggMTAwNjQ0Ci0tLSBhL3NyYy94dGVybS5oCisrKyBiL3NyYy94dGVy bS5oCkBAIC04ODQsNiArODg0LDEyIEBAICNkZWZpbmUgWF9JTlZBTElEX1dJTkRPVyAweGZmZmZm ZmZmCiAgICAgIHNlcnZlcl90aW1lX21vbm90b25pY19wIHdpbGwgYmUgdHJ1ZSkuICAqLwogICBp bnRfZmFzdDY0X3Qgc2VydmVyX3RpbWVfb2Zmc2V0OwogI2VuZGlmCisKKyNpZiBkZWZpbmVkIFVT RV9YQ0IgJiYgZGVmaW5lZCBVU0VfQ0FJUk9fWENCCisgIC8qIENhaXJvIGRldmljZSBhc3NvY2lh dGVkIHdpdGggY2Fpcm8gc3VyZmFjZXMgaW4gdGhpcyBkaXNwbGF5LgorICAgICBSZXF1aXJlZCBm b3IgcHJvcGVyIGNsZWFudXAgYmVmb3JlIGNsb3NpbmcgZGlzcGxheSBjb25uZWN0aW9uLiAgKi8K KyAgY2Fpcm9fZGV2aWNlX3QgKmNhaXJvX2RldmljZTsKKyNlbmRpZgogfTsKIAogI2lmZGVmIEhB VkVfWF9JMThOCi0tIAoyLjM5LjIKCg== --0000000000000004cf05fc27d4cc--
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From: Thiago Melo <tmdmelo@HIDDEN>
Date: Sat, 20 May 2023 11:47:34 +0000
Message-ID: <CABpoeKi+g+pD=nYp53KW8qu040JeXCF622Y2xQFA7C0-8L0CMw@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
To: Po Lu <luangruo@HIDDEN>
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Thank you for looking at it.
> However,
> this crash happens when a display connection is closed, which is not
> common in normal use. As the backtraces you attached show, an unrelated
> X error is what caused a connection to be closed.
I must clarity that, after these particular X errors happen (the ones
that trigger the x_error_quitter breakpoint), I might still be able to
create new frames, without emacs crashing. And vice versa, emacs might
crash without these X errors happening. So, the issues might or not
have a common underlying cause.
> To really fix this bug, we need to know the details of the X error.
> Once you reach the breakpoint on `x_error_quitter', would you please
> run:
>
> (gdb) p *event
>
> and send us the resulting print out?
Sure. Just in case, this time I compiled emacs with better configure
options for debugging (`--enable-checking='yes,glyphs'
--enable-check-lisp-object-type CFLAGS='-O0 -g3'`) and I was more
careful to run emacs with `-xrm "emacs.synchronous: true"`.
I must also highlight that the following errors in the backtrace
happen one right after the other (i.e., I'm unable to interact with
the zombie emacs frame in between).
```
Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
event=0x7fffffff71c0) at xterm.c:26126
26126 if (event->error_code == BadName)
(gdb) p *event
$1 = {
type = 0,
display = 0x55555654f4f0,
resourceid = 54526136,
serial = 706,
error_code = 14 '\016',
request_code = 1 '\001',
minor_code = 0 '\000'
}
(gdb) continue
Continuing.
Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
event=0x7fffffff6a50) at xterm.c:26126
26126 if (event->error_code == BadName)
(gdb) p *event
$2 = {
type = 0,
display = 0x55555654f4f0,
resourceid = 54526136,
serial = 707,
error_code = 3 '\003',
request_code = 8 '\b',
minor_code = 0 '\000'
}
(gdb) continue
Continuing.
Breakpoint 2, x_error_quitter (display=0x55555654f4f0,
event=0x7fffffff6a50) at xterm.c:26126
26126 if (event->error_code == BadName)
(gdb) p *event
$3 = {
type = 0,
display = 0x55555654f4f0,
resourceid = 54526136,
serial = 708,
error_code = 3 '\003',
request_code = 12 '\f',
minor_code = 0 '\000'
}
(gdb) continue
Continuing.
```
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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From: Po Lu <luangruo@HIDDEN>
To: Thiago Melo <tmdmelo@HIDDEN>
Subject: Re: bug#63589: 29.0.91; crash after creating graphical frames via
emacsclient when compiled with cairo-xcb
In-Reply-To: <CABpoeKhJ4atA46TFWBLQtr9otHTjs8ohNV8TOtwk4rgeUXe+8A@HIDDEN>
(Thiago Melo's message of "Fri, 19 May 2023 11:17:36 +0000")
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Date: Sat, 20 May 2023 09:46:45 +0800
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Thiago Melo <tmdmelo@HIDDEN> writes:
> emacs: ../../../../src/cairo-xcb-screen.c:219: _get_screen_index:
> Assertion `!"reached"' failed.
>
> Fatal error 6: Aborted
> ```
>
> Affects starting emacs with `emacs -Q --daemon`.
>
> Issue happens since commit de614ec9 ("Use Cairo XCB surfaces when XCB
> is available").
This is one bug. Thanks for bringing it to our attention. However,
this crash happens when a display connection is closed, which is not
common in normal use. As the backtraces you attached show, an unrelated
X error is what caused a connection to be closed.
To really fix this bug, we need to know the details of the X error.
Once you reach the breakpoint on `x_error_quitter', would you please
run:
(gdb) p *event
and send us the resulting print out?
bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
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With emacs 29 compiled with cairo-xcb, after starting emacs-daemon,
repeatedly closing the last graphical frame and creating a new one via
emacsclient will eventually crash emacs (it takes a few seconds for
me). During the process, some frames might fail to be created (they
briefly appear and close themselves).
After the crash, I get the following error messages from the tty where
I started the daemon:
```
emacs: ../../../../src/cairo-xcb-screen.c:219: _get_screen_index:
Assertion `!"reached"' failed.
Fatal error 6: Aborted
```
Affects starting emacs with `emacs -Q --daemon`.
Issue happens since commit de614ec9 ("Use Cairo XCB surfaces when XCB
is available").
Compiling emacs with only cairo is enough to trigger the bug.
'configure --without-all --with-x-toolkit=no --with-cairo'
Attached are a gdb session log with backtraces and system information.
Looking up the cairo-xcb error message above, I found a related
discussion at the cairo mailing list:
https://lists.cairographics.org/archives/cairo/2017-December/028491.html
Where someone had the same issue with a different software in a
similar scenario. One developer gives insight about the behavior and
suggests how to better manage cairo-xcb surfaces.
My workaround for now is patching emacs' configure.ac to disable cairo-xcb.
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--0000000000009e015f05fc0a13a7--
Thiago Melo <tmdmelo@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#63589; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.