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#28630: 27.0.50; C-g while a non-main thread is sitting crashes Emacs Date: Mon, 02 Oct 2017 19:08:59 +0300 Message-ID: <838tgt352c.fsf@gnu.org> References: <87efqri8x9.fsf@gmail.com> <874lrjy2rz.fsf@gmail.com> <831smm52v4.fsf@gnu.org> <87d166rb6n.fsf@gmail.com> <83o9pq3eix.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1506960621 20170 195.159.176.226 (2 Oct 2017 16:10:21 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 2 Oct 2017 16:10:21 +0000 (UTC) Cc: 28630@debbugs.gnu.org, tom@tromey.com, agrambot@gmail.com To: YAMAMOTO Mitsuharu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon Oct 02 18:10:17 2017 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 1dz3IO-0004Zt-Qu for geb-bug-gnu-emacs@m.gmane.org; Mon, 02 Oct 2017 18:10:16 +0200 Original-Received: from localhost ([::1]:53183 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dz3IS-0004MZ-Tk for geb-bug-gnu-emacs@m.gmane.org; Mon, 02 Oct 2017 12:10:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54964) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dz3II-0004Kz-30 for bug-gnu-emacs@gnu.org; Mon, 02 Oct 2017 12:10:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dz3IB-0002QQ-Vs for bug-gnu-emacs@gnu.org; Mon, 02 Oct 2017 12:10:10 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:35712) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1dz3IB-0002Q3-So for bug-gnu-emacs@gnu.org; Mon, 02 Oct 2017 12:10:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1dz3IA-0005DX-7Y for bug-gnu-emacs@gnu.org; Mon, 02 Oct 2017 12:10:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Mon, 02 Oct 2017 16:10:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 28630 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 28630-submit@debbugs.gnu.org id=B28630.150696059920043 (code B ref 28630); Mon, 02 Oct 2017 16:10:02 +0000 Original-Received: (at 28630) by debbugs.gnu.org; 2 Oct 2017 16:09:59 +0000 Original-Received: from localhost ([127.0.0.1]:44393 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dz3I7-0005DC-Do for submit@debbugs.gnu.org; Mon, 02 Oct 2017 12:09:59 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:35719) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dz3I6-0005D1-DN for 28630@debbugs.gnu.org; Mon, 02 Oct 2017 12:09:58 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dz3Hx-00028B-96 for 28630@debbugs.gnu.org; Mon, 02 Oct 2017 12:09:53 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42151) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dz3HR-0001bO-F4; Mon, 02 Oct 2017 12:09:17 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2017 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1dz3HQ-00051g-HX; Mon, 02 Oct 2017 12:09:17 -0400 In-reply-to: (message from YAMAMOTO Mitsuharu on Mon, 02 Oct 2017 21:43:52 +0900) 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:137783 Archived-At: > Date: Mon, 02 Oct 2017 21:43:52 +0900 > From: YAMAMOTO Mitsuharu > Cc: 28630@debbugs.gnu.org, > tom@tromey.com, > Alex > > Sorry. The stacks seem to be already clobbered by (bad) longjmp. So > the above analysis would be bogus. I think the second thread calls setjmp and clobbers the values set by the main thread, when the main thread called setjmp. We need to eliminate this possibility of threads stepping on each other's toes. Caveat: I didn't yet take a good look at the involved code, so what I say might make no sense.