From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#33091: 27.0.50; Daily+ crashes in auto-save-hook Date: Fri, 19 Oct 2018 09:28:34 +0300 Message-ID: <834ldiqwkt.fsf@gnu.org> References: <871s8n84n8.fsf@everybody.org> <838t2vqaov.fsf@gnu.org> <87woqf6mfc.fsf@everybody.org> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1539930493 12407 195.159.176.226 (19 Oct 2018 06:28:13 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 19 Oct 2018 06:28:13 +0000 (UTC) Cc: 33091@debbugs.gnu.org To: "Mark A. Hershberger" Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Oct 19 08:28:09 2018 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gDOGT-00034o-Vw for geb-bug-gnu-emacs@m.gmane.org; Fri, 19 Oct 2018 08:28:06 +0200 Original-Received: from localhost ([::1]:47380 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gDOIa-0006lY-He for geb-bug-gnu-emacs@m.gmane.org; Fri, 19 Oct 2018 02:30:16 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55618) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gDOIU-0006in-71 for bug-gnu-emacs@gnu.org; Fri, 19 Oct 2018 02:30:11 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gDOIO-000112-6E for bug-gnu-emacs@gnu.org; Fri, 19 Oct 2018 02:30:09 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:53781) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1gDOIM-0000wa-Ld for bug-gnu-emacs@gnu.org; Fri, 19 Oct 2018 02:30:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1gDOIM-0005sn-BL for bug-gnu-emacs@gnu.org; Fri, 19 Oct 2018 02:30:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 19 Oct 2018 06:30:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 33091 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 33091-submit@debbugs.gnu.org id=B33091.153993055122528 (code B ref 33091); Fri, 19 Oct 2018 06:30:02 +0000 Original-Received: (at 33091) by debbugs.gnu.org; 19 Oct 2018 06:29:11 +0000 Original-Received: from localhost ([127.0.0.1]:58039 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gDOHX-0005rI-BM for submit@debbugs.gnu.org; Fri, 19 Oct 2018 02:29:11 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:45086) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1gDOHV-0005r5-8R for 33091@debbugs.gnu.org; Fri, 19 Oct 2018 02:29:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gDOHK-0007Gq-Sw for 33091@debbugs.gnu.org; Fri, 19 Oct 2018 02:29:03 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:50163) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gDOHI-0007Du-Ny; Fri, 19 Oct 2018 02:28:56 -0400 Original-Received: from [176.228.60.248] (port=4783 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1gDOHI-0007yW-9M; Fri, 19 Oct 2018 02:28:56 -0400 In-reply-to: <87woqf6mfc.fsf@everybody.org> (mah@everybody.org) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 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.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:151416 Archived-At: > From: "Mark A. Hershberger" > Cc: 33091@debbugs.gnu.org > Date: Thu, 18 Oct 2018 16:15:51 -0400 > > Eli Zaretskii writes: > > > IOW, GC segfaults, and then Emacs tries to auto-save the session, > > which fails. > > > > Is it possible that GC hits a stack overflow? Can you try manually > > establishing whether that is the case by doing what stack_overflow in > > sysdep.c does? > > I don't know how to do this. I can follow directions if you can tell me > what to do, though. Given the backtrace you show in your report, I believe the commands below should do that: (gdb) frame 13 (gdb) p/x siginfo->si_addr (gdb) p/x stack_bottom (gdb) p/x current_thread->stack_top Stack frame #13 is inside handle_sigsegv, according to your backtrace.