From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Welsh Duggan Newsgroups: gmane.emacs.bugs Subject: bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs Date: Thu, 08 Apr 2021 12:42:51 -0400 Message-ID: References: <87im5ofp3z.fsf@md5i.com> <79cfe67d-3a2c-952d-7c51-20e8a4859380@gmx.at> <87czv6q1f8.fsf@md5i.com> <233daa4b-ca64-955f-2612-49a0503b1938@gmx.at> <8735w2p8oc.fsf@md5i.com> <5181da75-e80d-22e0-bdcb-a0ffdc1bac6a@gmx.at> <5c4e5857-6a76-b8e8-204b-b4a855e95a16@gmx.at> <8f4516d5-1080-71bb-7da7-acf7832d5529@gmx.at> <87r1jlvnrc.fsf@md5i.com> <871rbkn6op.fsf@md5i.com> <83lf9s91ko.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40310"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: "mwd@md5i.com" , "schwab@linux-m68k.org" , "47244@debbugs.gnu.org" <47244@debbugs.gnu.org> To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Apr 08 18:44:20 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lUXlT-000ANf-PE for geb-bug-gnu-emacs@m.gmane-mx.org; 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Thu, 8 Apr 2021 12:42:52 -0400 Original-Received: from lx-birch.ad.sei.cmu.edu (localhost [127.0.0.1]) by lx-birch.ad.sei.cmu.edu (8.14.7/8.14.7) with ESMTP id 138GgqiE011273; Thu, 8 Apr 2021 12:42:52 -0400 Original-Received: (from mwd@localhost) by lx-birch.ad.sei.cmu.edu (8.14.7/8.14.7) id 138GgpOf011268; Thu, 8 Apr 2021 12:42:51 -0400 X-Authentication-Warning: lx-birch.ad.sei.cmu.edu: mwd set sender to mwd@cert.org using -f In-Reply-To: <83lf9s91ko.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 8 Apr 2021 12:35:19 -0400") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:203744 Archived-At: Eli Zaretskii writes: >> From: Michael Welsh Duggan >> Date: Thu, 08 Apr 2021 12:01:23 -0400 >> Cc: Michael Welsh Duggan , >> "schwab@linux-m68k.org" , >> "47244@debbugs.gnu.org" <47244@debbugs.gnu.org> >> >> Lisp Backtrace: >> "window-list-1" (0xffffbfa0) >> "replace-buffer-in-windows" (0xffffc4a8) >> "kill-buffer" (0xffffc710) >> 0x571d80f8 PVEC_COMPILED >> "substitute-command-keys" (0xffffd3d8) >> "command-error-default-function" (0xffffd628) >> "apply" (0xffffd7e8) >> 0xf2c1d0e8 PVEC_COMPILED > > This seems to indicate that kill-buffer is called by > substitute-command-keys, in which case the buffer in question is a > temporary buffer. Can you verify that by looking at the buffer's name > in frame #13: > >> #13 0x0000555555758e6d in Fkill_buffer >> (buffer_or_name=XIL(0x5555571d7ced)) at >> ../../master/src/buffer.c:1830 >> buffer = XIL(0x5555571d7ced) >> b = 0x5555571d7ce8 >> tem = XIL(0x555555753673) >> m = 0x7fffffffc5f0 I'm afraid I cancelled that gdb session in favor of a new one recently, sorry. I'll report on that at the next trigger. > And if I'm right, it sounds like we are looking at a different > scenario here? The previous calls to kill-buffer were from Gnus, > right? The scenario is the same, but recent changes my Martin have moved the failure closer to the trigger condition. Before I typed C-g C-g, switched to the server buffer, changed some connections, and then things died when the server buffer was killed. We have managed to determine that this is due to Vwindow_list being inconsistent with reality, and Martin's changes have caused us to fail closer to the actual cause of failure. -- Michael Welsh Duggan (mwd@cert.org)