From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Lars Ingebrigtsen Newsgroups: gmane.emacs.bugs Subject: bug#11701: 24.1.50; SIGBUS in libMagickCore when reconverting pdf files in doc-view-mode Date: Sat, 17 Aug 2019 15:08:10 -0700 Message-ID: <87pnl3jvhx.fsf@mouse.gnus.org> References: <87lijqluyn.fsf@fh-trier.de> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="167344"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) Cc: 11701@debbugs.gnu.org To: Andreas Politz Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sun Aug 18 00:09:12 2019 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hz6so-000hPz-TY for geb-bug-gnu-emacs@m.gmane.org; Sun, 18 Aug 2019 00:09:11 +0200 Original-Received: from localhost ([::1]:38298 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hz6sn-000595-QY for geb-bug-gnu-emacs@m.gmane.org; Sat, 17 Aug 2019 18:09:09 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:44615) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1hz6sh-00058f-4S for bug-gnu-emacs@gnu.org; Sat, 17 Aug 2019 18:09:04 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hz6sg-0008R0-03 for bug-gnu-emacs@gnu.org; Sat, 17 Aug 2019 18:09:03 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:48193) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hz6sf-0008Qr-Sy for bug-gnu-emacs@gnu.org; Sat, 17 Aug 2019 18:09:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1hz6sf-0007Px-MD for bug-gnu-emacs@gnu.org; Sat, 17 Aug 2019 18:09:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Lars Ingebrigtsen Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 17 Aug 2019 22:09:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11701 X-GNU-PR-Package: emacs Original-Received: via spool by 11701-submit@debbugs.gnu.org id=B11701.156607969828444 (code B ref 11701); Sat, 17 Aug 2019 22:09:01 +0000 Original-Received: (at 11701) by debbugs.gnu.org; 17 Aug 2019 22:08:18 +0000 Original-Received: from localhost ([127.0.0.1]:57011 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hz6rx-0007Oi-LJ for submit@debbugs.gnu.org; Sat, 17 Aug 2019 18:08:17 -0400 Original-Received: from quimby.gnus.org ([80.91.231.51]:56272) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1hz6rw-0007Oa-3k for 11701@debbugs.gnu.org; Sat, 17 Aug 2019 18:08:16 -0400 Original-Received: from [50.225.213.182] (helo=sandy) by quimby.gnus.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hz6rs-0004QS-Kp; Sun, 18 Aug 2019 00:08:15 +0200 In-Reply-To: <87lijqluyn.fsf@fh-trier.de> (Andreas Politz's message of "Thu, 14 Jun 2012 00:15:28 +0200") 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: 209.51.188.43 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:165293 Archived-At: Andreas Politz writes: > When reverting a doc-view buffer, Emacs crashes receiving a SIGBUS error > (below is a back-trace). I am not able to reproduce it without loading > my init file, but am able to reproduce it on a certain file constantly > otherwise. > > The crash happens after doc-view deletes its cache files in > `doc-view-reconvert-doc' and starts to convert the PDF pages to PNG > files (and indirectly calling functions in the magick library). It > seems that the deleted file is still mmapped and accessed in the library > at this point, leading to the error. > > A. Politz > > Program received signal SIGBUS, Bus error. > 0x00007ffff44d99af in CopyMagickMemory () from /usr/lib/libMagickCore.so.3 > (gdb) quit[K(gdb) bt > #0 0x00007ffff44d99af in CopyMagickMemory () from /usr/lib/libMagickCore.so.3 > #1 0x00007ffff4419704 in ReadBlob () from /usr/lib/libMagickCore.so.3 > #2 0x00007fffeb10068e in ?? () from /usr/lib/ImageMagick-6.6.0/modules-Q16/coders/png.so (I'm going through old bug reports that have unfortunately gotten no responses yet.) This crash wasn't handled at the time, and as this was reported more than seven years ago, I don't think there's much chance of making any progress here, so I'm closing this bug report. If you're still seeing similar crashes in modern Emacs versions, please reopen. (And Emacs 27, by default, isn't built with ImageMagick support, so these types of crashes are less likely now.) -- (domestic pets only, the antidote for overdose, milk.) bloggy blog: http://lars.ingebrigtsen.no