From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Kangas Newsgroups: gmane.emacs.bugs Subject: bug#33091: 27.0.50; Daily+ crashes in auto-save-hook Date: Fri, 21 Aug 2020 00:47:58 -0700 Message-ID: References: <871s8n84n8.fsf@everybody.org> <838t2vqaov.fsf@gnu.org> <87woqf6mfc.fsf@everybody.org> <834ldiqwkt.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="9037"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: "Mark A. Hershberger" , 33091@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Aug 21 09:49:10 2020 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 1k91nR-0002DA-Ur for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Aug 2020 09:49:09 +0200 Original-Received: from localhost ([::1]:55310 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k91nQ-0007BZ-KP for geb-bug-gnu-emacs@m.gmane-mx.org; Fri, 21 Aug 2020 03:49:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56926) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k91nK-0007BO-Dy for bug-gnu-emacs@gnu.org; Fri, 21 Aug 2020 03:49:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:33388) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k91nK-0000S5-2x for bug-gnu-emacs@gnu.org; Fri, 21 Aug 2020 03:49:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1k91nK-0007zh-1g for bug-gnu-emacs@gnu.org; Fri, 21 Aug 2020 03:49:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Kangas Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 21 Aug 2020 07:49:01 +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: moreinfo Original-Received: via spool by 33091-submit@debbugs.gnu.org id=B33091.159799608830668 (code B ref 33091); Fri, 21 Aug 2020 07:49:01 +0000 Original-Received: (at 33091) by debbugs.gnu.org; 21 Aug 2020 07:48:08 +0000 Original-Received: from localhost ([127.0.0.1]:44934 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k91mR-0007ya-N4 for submit@debbugs.gnu.org; Fri, 21 Aug 2020 03:48:07 -0400 Original-Received: from mail-yb1-f174.google.com ([209.85.219.174]:39546) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1k91mO-0007xX-5W for 33091@debbugs.gnu.org; Fri, 21 Aug 2020 03:48:04 -0400 Original-Received: by mail-yb1-f174.google.com with SMTP id q16so580110ybk.6 for <33091@debbugs.gnu.org>; Fri, 21 Aug 2020 00:48:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:in-reply-to:references:user-agent :mime-version:date:message-id:subject:to:cc; bh=ZWiwqDstiEq5qtRzjF5epik+B+X0CNQb+8TwIK0oZMg=; b=O9ADLxHPI9tnUj7+zB/DKt3mTCTLUj9PD8LTzCYNzVID1Hhe9kn4VoCnGMP/1KNlvs G88TDAEWmfBOSvIAv590jhIAWNo+Sv8QLiUomcsCO3Sfbjreq/w/uCFp0/Yhk93SL5Jp zLw2+NNCyHsVCEDkNX3rG6ZCaO7CoMzg7KxdZPHYS9PFnPP/ypyUXesMVi6/tK15+Uad j4jBxeT1i1fhtzIZ+7XM3AXlOJujB4e9UmQc8f5L63hs2E+3G8VBRNd/9hcqD3+rUIkW 9fVHQkLdRJW2+Am1ivjQ/rYJISEr9/mmHR6yutIT8zPpUekBhMLX0t6iqdHX2Wycx/F4 Ybgg== X-Gm-Message-State: AOAM532N94UQgW+okEucrG4lhndrvUG5lyWcJZauwSMy74UtxpcfEUnP h93P+3wt7tcsBCCOUixIa+Gtmx4yUx5pX1deFgk8tSJUqUWbHw== X-Google-Smtp-Source: ABdhPJyPFLAm8CE+GN2sDPuRHMfewSTwyc3rF4zI2lCk+ibCEq+zQZgy9na9renLW99w6X9lerT4e9Bdc/980j0Frfs= X-Received: by 2002:a25:9843:: with SMTP id k3mr2140514ybo.466.1597996078656; Fri, 21 Aug 2020 00:47:58 -0700 (PDT) Original-Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Fri, 21 Aug 2020 00:47:58 -0700 In-Reply-To: <834ldiqwkt.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 19 Oct 2018 09:28:34 +0300") 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:185825 Archived-At: Hi Mark, Eli Zaretskii writes: >> 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. It seems like we need more information from you to make any progress here. Did you have a chance to look into this? Thanks. Best regards, Stefan Kangas