From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#16039: repeated emacs crashes (in GC?) Date: Wed, 04 Dec 2013 05:49:46 +0200 Message-ID: <838uw146n9.fsf@gnu.org> References: <83k3fl53fy.fsf@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1386129013 10455 80.91.229.3 (4 Dec 2013 03:50:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 4 Dec 2013 03:50:13 +0000 (UTC) Cc: 16039@debbugs.gnu.org, user.emacs@gmail.com To: YAMAMOTO Mitsuharu Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Wed Dec 04 04:50:17 2013 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1Vo3Td-00075L-Js for geb-bug-gnu-emacs@m.gmane.org; Wed, 04 Dec 2013 04:50:17 +0100 Original-Received: from localhost ([::1]:46117 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vo3Td-0000ng-6A for geb-bug-gnu-emacs@m.gmane.org; Tue, 03 Dec 2013 22:50:17 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43016) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vo3TV-0000mL-47 for bug-gnu-emacs@gnu.org; Tue, 03 Dec 2013 22:50:14 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Vo3TP-0005SI-Qv for bug-gnu-emacs@gnu.org; Tue, 03 Dec 2013 22:50:09 -0500 Original-Received: from debbugs.gnu.org ([140.186.70.43]:43092) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Vo3TP-0005Rg-Mp for bug-gnu-emacs@gnu.org; Tue, 03 Dec 2013 22:50:03 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Vo3TO-00061C-Tu for bug-gnu-emacs@gnu.org; Tue, 03 Dec 2013 22:50:03 -0500 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Wed, 04 Dec 2013 03:50:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 16039 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 16039-submit@debbugs.gnu.org id=B16039.138612898823106 (code B ref 16039); Wed, 04 Dec 2013 03:50:02 +0000 Original-Received: (at 16039) by debbugs.gnu.org; 4 Dec 2013 03:49:48 +0000 Original-Received: from localhost ([127.0.0.1]:57111 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Vo3TA-00060c-4U for submit@debbugs.gnu.org; Tue, 03 Dec 2013 22:49:48 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:42127) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Vo3T6-00060P-MT for 16039@debbugs.gnu.org; Tue, 03 Dec 2013 22:49:46 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0MX900800JSP0E00@a-mtaout22.012.net.il> for 16039@debbugs.gnu.org; Wed, 04 Dec 2013 05:49:42 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0MX9007K2JYUTT60@a-mtaout22.012.net.il>; Wed, 04 Dec 2013 05:49:42 +0200 (IST) In-reply-to: X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:81346 Archived-At: > Date: Wed, 04 Dec 2013 09:43:00 +0900 > From: YAMAMOTO Mitsuharu > Cc: emacs user , > 16039@debbugs.gnu.org > > >>>>> On Tue, 03 Dec 2013 18:01:21 +0200, Eli Zaretskii said: > > >> I wrote YAMAMOTO Mitsuharu, the Emacs for mac developer, and his > >> response is > >> > >> > The backtrace shows that the stack is used up because some deeply > >> > nested Lisp data structure is recursively traversed in garbage > > >> > collection (or possibly an unknown bug in the GC code). In > >> > normal OSX applications, the stack depth for the main thread is > >> > set to 8MiB by default, and Emacs slightly enlarges it to > >> > 8720000B (on 64-bit binary) by some formula in src/emacs.c: > > > What is the evidence that the stack is used up? > > The backtrace shows it crashed by accessing the address exceeding the > stack boundary: > > * thread #1: tid = 0x484e3, 0x00000001000f61d1 Emacs`mark_object + 1073, > queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=2, > address=0x7fff5f3aeff8) > > Below is extracted from the memory map (% vmmap -interleaved PID): > > STACK GUARD 00007fff5bc00000-00007fff5f3af000 [ 55.7M] ---/rwx SM=NUL stack guard for thread 0 > Stack 00007fff5f3af000-00007fff5f400000 [ 324K] rw-/rwx SM=NUL thread 0 > Stack 00007fff5f400000-00007fff5fbff000 [ 8188K] rw-/rwx SM=PRV thread 0 > > > Having 136 thousand frames during GC is not unheard of. > > (/ 8720000.0 (* 136 1000)) > 64.11764705882354 > > If each frame consumes more than 64 bytes, then it will use up > 8720000B stack space. Thanks. I'd suggest to enlarge the stack (e.g., double it), and try again. If the stack is still overflowed, then there's probably some GC-related problem.