GNU bug report logs - #29217
25.3; Emacs segfaults on images

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

From: Klaus Alexander Seistrup <klaus <at> seistrup.dk>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.3; Emacs segfaults on images
Date: Wed, 8 Nov 2017 19:20:59 +0100

Visiting an image file, be it a JPEG or a PNG, makes emacs segfault.

I discovered this while reading a news article in Gnus that had
https://www.brk.dk/Nyheder/PublishingImages/mad.jpg embedded, but
downloading the image and running

$ /usr/bin/emacs -Q /tmp/mad.jpg

or, in effect, any JPG or PNG image, produces this stack trace:

Fatal error 11: Segmentation fault
Backtrace:
/usr/bin/emacs[0x50907f]
/usr/bin/emacs[0x4eefbc]
/usr/bin/emacs[0x50771f]
/usr/bin/emacs[0x5078e9]
/usr/bin/emacs[0x507975]
/usr/lib/libpthread.so.0(+0x11da0)[0x7fc039d43da0]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x6bdc7)[0x7fc03c2d6dc7]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x426ef)[0x7fc03c2ad6ef]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(UnsharpMaskImageChannel+0xaf)[0x7fc03c35668f]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x150429)[0x7fc03c3bb429]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x150cba)[0x7fc03c3bbcba]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(InitOpenCLEnv+0x7c)[0x7fc03c3bc7cc]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x3fb52)[0x7fc03c2aab52]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(+0x43639)[0x7fc03c2ae639]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(CompositeImageChannel+0x2e3)[0x7fc03c2f8db3]
/usr/lib/libMagickCore-6.Q16HDRI.so.5(MergeImageLayers+0x2f5)[0x7fc03c39e7a5]
/usr/lib/libMagickWand-6.Q16HDRI.so.5(MagickMergeImageLayers+0x4b)[0x7fc03c7ee29b]
/usr/bin/emacs[0x5d7099]
/usr/bin/emacs[0x5df2bd]
/usr/bin/emacs[0x5df7c1]
/usr/bin/emacs[0x5635e6]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
/usr/bin/emacs[0x59c034]
/usr/bin/emacs[0x56345b]
...
Segmentation fault (core dumped) 


This is the newest version of emacs and ImageMagick on ArchLinux:

extra/emacs 25.3-1
extra/imagemagick 6.9.9.22-1

and I should add that "display /tmp/mad.jpg" does not segfault.




In GNU Emacs 25.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.19)
of 2017-09-16 built on juergen
Windowing system distributor 'The X.Org Foundation', version 11.0.11905000
System Description:	Arch Linux

Configured using:
'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
--localstatedir=/var --with-x-toolkit=gtk3 --with-xft --with-modules
'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
-fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2
LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 MODULES

Important settings:
 value of $LC_ALL: en_DK.UTF-8
 value of $LANG: en_DK.UTF-8
 locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
 show-paren-mode: t
 display-time-mode: t
 delete-selection-mode: t
 save-place-mode: t
 tooltip-mode: t
 global-eldoc-mode: t
 mouse-wheel-mode: t
 tool-bar-mode: t
 menu-bar-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
 column-number-mode: t
 line-number-mode: t
 transient-mark-mode: t

Recent messages:
Loading time...done
Loading paren...done

Load-path shadows:
None found.

Features:
(shadow sort hashcash mail-extr emacsbug message idna dired rfc822 mml
mml-sec password-cache epg gnus-util mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils paren time
cus-start cus-load delsel org advice org-macro org-footnote
org-pcomplete pcomplete org-list org-faces org-entities noutline outline
easy-mmode org-version ob-emacs-lisp ob ob-tangle ob-ref ob-lob ob-table
ob-exp org-src ob-keys ob-comint comint ansi-color ring ob-core ob-eval
org-compat org-macs org-loaddefs format-spec find-func cal-menu calendar
cal-loaddefs saveplace finder-inf package epg-config seq byte-opt gv
bytecomp byte-compile cl-extra help-mode easymenu cconv cl-loaddefs
pcase cl-lib time-date mule-util tooltip eldoc electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win term/common-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
elisp-mode lisp-mode prog-mode register page menu-bar rfn-eshadow timer
select scroll-bar mouse jit-lock font-lock syntax facemenu font-core
frame cl-generic cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek romanian
slovak czech european ethiopic indian cyrillic chinese charscript
case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer
cl-preloaded nadvice loaddefs button faces cus-face macroexp files
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget hashtable-print-readable backquote dbusbind inotify
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 153610 7149)
(symbols 48 27855 0)
(miscs 40 1092 138)
(strings 32 39082 5434)
(string-bytes 1 1225760)
(vectors 16 20396)
(vector-slots 8 532615 2664)
(floats 8 230 118)
(intervals 56 246 0)
(buffers 976 19))

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