GNU bug report logs - #9335
24.0.50; Some animated gifs segfault Emacs

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Package: emacs;

Reported by: Lars Magne Ingebrigtsen <larsi <at> gnus.org>

Date: Sat, 20 Aug 2011 22:31:02 UTC

Severity: normal

Found in version 24.0.50

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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Report forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#9335; Package emacs. (Sat, 20 Aug 2011 22:31:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Lars Magne Ingebrigtsen <larsi <at> gnus.org>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Sat, 20 Aug 2011 22:31:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.50; Some animated gifs segfault Emacs
Date: Sun, 21 Aug 2011 00:27:53 +0200

Starting program: /home/larsi/src/emacs/trunk/src/emacs 
[Thread debugging using libthread_db enabled]

A few images, like the following, sometimes segfault Emacs 24:

http://chzichcafterdark.files.wordpress.com/2011/08/funny-pictures-excuse-me.gif

Program received signal SIGSEGV, Segmentation fault.
gif_load (f=<value optimized out>, img=0x3389ea0) at image.c:7360
7360                    int c = raster[y * image_width + x];
(gdb) bt
#0  gif_load (f=<value optimized out>, img=0x3389ea0) at image.c:7360
#1  0x00000000004e9bac in lookup_image (f=0x29bc450, spec=37327590)
    at image.c:1741
#2  0x00000000004e9ea6 in Fimage_metadata (spec=37327590, frame=11852194)
    at image.c:975
#3  0x000000000056f7da in Ffuncall (nargs=<value optimized out>, 
    args=<value optimized out>) at eval.c:2984
#4  0x00000000005a9255 in exec_byte_code (bytestr=<value optimized out>, 
    vector=<value optimized out>, maxdepth=<value optimized out>, 

It isn't 100% repeatable -- with this image, it seems to happen every
third time I start Emacs.    


In GNU Emacs 24.0.50.5 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2011-08-20 on stories
Windowing system distributor `The X.Org Foundation', version 11.0.10707000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
M-x p <return> y M-x r e p o <tab> r <tab> <return
>

Recent messages:
Opening connection to hermes.netfonds.no via tls...
nnimap hermes.netfonds.no splitting mail...
nnimap read 0k [2 times]
nnimap hermes.netfonds.no splitting mail...done
nnimap read 0k [97 times]
nnimap read 1k
nnimap read 2k
nnimap read 3k
nnimap read 7k [2 times]
Making completion list...

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/home/larsi/pgnus/lisp/nnspool hides /home/larsi/src/emacs/trunk/lisp/gnus/nnspool
/home/larsi/pgnus/lisp/spam-wash hides /home/larsi/src/emacs/trunk/lisp/gnus/spam-wash
/home/larsi/pgnus/lisp/gnus-mlspl hides /home/larsi/src/emacs/trunk/lisp/gnus/gnus-mlspl
/home/larsi/pgnus/lisp/rtree hides /home/larsi/src/emacs/trunk/lisp/gnus/rtree
/home/larsi/pgnus/lisp/time-date hides /home/larsi/src/emacs/trunk/lisp/calendar/time-date
/home/larsi/pgnus/lisp/parse-time hides /home/larsi/src/emacs/trunk/lisp/calendar/parse-time
/home/larsi/pgnus/lisp/pgg-gpg hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg-gpg
/home/larsi/pgnus/lisp/pgg-pgp5 hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg-pgp5
/home/larsi/pgnus/lisp/pgg-def hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg-def
/home/larsi/pgnus/lisp/pgg-parse hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg-parse
/home/larsi/pgnus/lisp/pgg-pgp hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg-pgp
/home/larsi/pgnus/lisp/pgg hides /home/larsi/src/emacs/trunk/lisp/obsolete/pgg

Features:
(shadow sort ecomplete emacsbug help-mode view gnus-fun gnus-mdrtn
gnus-topic nndoc nnmbox nndraft nnfolder utf-7 nnimap parse-time utf7
gnutls rot13 disp-table netrc network-stream starttls nnmh copyright
vc-cvs nnagent nnml spam-report spam spam-stat gnus-uu yenc gnus-agent
gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-art mm-uu
mml2015 epg-config mm-view mml-smime smime dig nntp gnus-cache nnir
gnus-sum nnoo gnus-group gnus-undo nnmail mail-source gnus-start
gnus-spec gnus-int gnus-range message format-spec rfc822 mml easymenu
mml-sec mailabbrev gmm-utils mailheader gnus-win gnus-load gnus gnus-ems
nnheader mail-utils wid-edit uniquify advice help-fns advice-preload
debbugs-gnu easy-mmode derived tabulated-list debbugs soap-client
mm-decode mm-bodies mm-encode url-http tls url-auth mail-parse rfc2231
rfc2047 rfc2045 ietf-drums url-gw url url-proxy url-privacy url-expand
url-methods url-history url-cookie url-util url-parse auth-source eieio
byte-opt bytecomp byte-compile cconv macroexp assoc gnus-util
password-cache url-vars mm-util mail-prsvr mailcap warnings xml ido
flyspell ispell dired regexp-opt add-log mail-extr jka-compr cl
time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image fringe lisp-mode register page menu-bar
rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax
facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak
czech european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face files text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget hashtable-print-readable backquote
make-network-process dynamic-setting font-render-setting move-toolbar
gtk x-toolkit x multi-tty emacs)

-- 
(domestic pets only, the antidote for overdose, milk.)
  bloggy blog http://lars.ingebrigtsen.no/
Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#9335; Package emacs. (Sun, 21 Aug 2011 16:02:02 GMT) Full text and rfc822 format available.

Message #8 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Andy Moreton <andrewjmoreton <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: Re: bug#9335: 24.0.50; Some animated gifs segfault Emacs
Date: Sun, 21 Aug 2011 16:59:09 +0100

On Sat 20 Aug 2011, Lars Magne Ingebrigtsen wrote:

> Starting program: /home/larsi/src/emacs/trunk/src/emacs 
> [Thread debugging using libthread_db enabled]
>
> A few images, like the following, sometimes segfault Emacs 24:
>
> http://chzichcafterdark.files.wordpress.com/2011/08/funny-pictures-excuse-me.gif
>
> Program received signal SIGSEGV, Segmentation fault.
> gif_load (f=<value optimized out>, img=0x3389ea0) at image.c:7360
> 7360                    int c = raster[y * image_width + x];

I see crashes on Win32 with a very similar backtrace.

> It isn't 100% repeatable -- with this image, it seems to happen every
> third time I start Emacs.    

This image realiably crashes emacs-24 for me:

http://en.wikipedia.org/wiki/File:Clock.gif

    AndyM
Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#9335; Package emacs. (Mon, 22 Aug 2011 02:38:01 GMT) Full text and rfc822 format available.

Message #11 received at 9335 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Lars Magne Ingebrigtsen <larsi <at> gnus.org>
Cc: 9335 <at> debbugs.gnu.org
Subject: Re: bug#9335: 24.0.50; Some animated gifs segfault Emacs
Date: Sun, 21 Aug 2011 22:34:44 -0400

Lars Magne Ingebrigtsen <larsi <at> gnus.org> writes:

> A few images, like the following, sometimes segfault Emacs 24:
>
> http://chzichcafterdark.files.wordpress.com/2011/08/funny-pictures-excuse-me.gif

Thanks, I've committed a fix.
bug closed, send any further explanations to 9335 <at> debbugs.gnu.org and Lars Magne Ingebrigtsen <larsi <at> gnus.org> Request was from Chong Yidong <cyd <at> stupidchicken.com> to control <at> debbugs.gnu.org. (Mon, 22 Aug 2011 02:38:02 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Mon, 19 Sep 2011 11:24:03 GMT) Full text and rfc822 format available.
This bug report was last modified 12 years and 244 days ago.

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