Package: imagemagick
Version: 7:6.2.4.5-0.8
Severity: normal
Tags: patch
Hello,
Here are the steps to reproduce the segfault:
- launch "display" without parameters
- choose "Cancel"
- click on the logo to display the menu
- choose "File/Visual Directory"
- enter a directory without any image in File name (/ for instance)
- choose Directory
I have traced the problem under gdb:
(gdb) b main
Breakpoint 1 at 0x80488a1: file utilities/display.c, line 113.
(gdb) set env LD_LIBRARY_PATH
/home/fred/debian/imagemagick/imagemagick-6.2.4.5/magick/.libs/
(gdb) r
Starting program:
/home/fred/debian/imagemagick/imagemagick-6.2.4.5/utilities/.libs/display
[Thread debugging using libthread_db enabled]
[New Thread -1218598688 (LWP 24266)]
[Switching to Thread -1218598688 (LWP 24266)]
Breakpoint 1, main (argc=1, argv=0xbf96f674) at utilities/display.c:113
(gdb) s
InitializeMagick (
path=0xbf96fd90
"/home/fred/debian/imagemagick/imagemagick-6.2.4.5/utilities/.libs/display") at
magick/magick.c:886
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0xb7c30eb1 in XVisualDirectoryImage (display=0x804fac0,
resource_info=0xbf96e394, windows=0x8208410) at magick/display.c:14661
(gdb) bt
#0 0xb7c30eb1 in XVisualDirectoryImage (display=0x804fac0,
resource_info=0xbf96e394, windows=0x8208410) at magick/display.c:14661
#1 0xb7c23e9a in XMagickCommand (display=0x804fac0,
resource_info=0xbf96e394, windows=0x8208410,
command=VisualDirectoryCommand, image=0xbf96a2ac) at magick/display.c:8705
#2 0xb7c34b0c in XDisplayImage (display=0x804fac0, resource_info=0xbf96e394,
argv=0x804a7f8, argc=1, image=0xbf96f49c, state=0xbf96f490)
at magick/display.c:16091
#3 0xb7c0b9d8 in DisplayImageCommand (image_info=0x8071e58, argc=1,
argv=0x804a7f8, magick_unused_metadata=0x0, exception=0xbf96f5d4)
at magick/display.c:2030
#4 0x080489f2 in main (argc=1, argv=0xbf96f674) at utilities/display.c:131
(gdb) p images->progress_monitor
Cannot access memory at address 0x1a8
(gdb) p *images
Cannot access memory at address 0x0
(gdb)
This small patch fixes the problem for me:
diff -u imagemagick-6.2.4.5/magick/display.c
imagemagick-6.2.4.5/magick/display.c
--- imagemagick-6.2.4.5/magick/display.c
+++ imagemagick-6.2.4.5/magick/display.c
@@ -14658,8 +14658,8 @@
}
AppendImageToList(&images,next_image);
}
- if ((images->progress_monitor != (MagickProgressMonitor) NULL) &&
- (QuantumTick(i,number_files) != MagickFalse))
+ if ((images != (Image *) NULL) && ((images->progress_monitor !=
(MagickProgressMonitor) NULL) &&
+ (QuantumTick(i,number_files) !=
MagickFalse)))
{
status=images->progress_monitor(LoadImageTag,i,(MagickSizeType)
number_files,images->client_data);
Greetings,
Fred
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (990, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Versions of packages imagemagick depends on:
ii libbz2-1.0 1.0.3-2 high-quality block-sorting file co
ii libc6 2.3.6-4 GNU C Library: Shared libraries an
ii libfreetype6 2.1.10-3 FreeType 2 font engine, shared lib
ii libice6 6.9.0.dfsg.1-5 Inter-Client Exchange library
ii libjasper-1.701-1 1.701.0-2 The JasPer JPEG-2000 runtime libra
ii libjpeg62 6b-12 The Independent JPEG Group's JPEG
ii liblcms1 1.13-1 Color management library
ii libmagick9 7:6.2.4.5-0.8 Image manipulation library
ii libpng12-0 1.2.8rel-5.1 PNG library - runtime
ii libsm6 6.9.0.dfsg.1-5 X Window System Session Management
ii libtiff4 3.8.2-1 Tag Image File Format (TIFF) libra
ii libx11-6 6.9.0.dfsg.1-5 X Window System protocol client li
ii libxext6 6.9.0.dfsg.1-5 X Window System miscellaneous exte
ii libxml2 2.6.23.dfsg.2-3 GNOME XML library
ii zlib1g 1:1.2.3-11 compression library - runtime
imagemagick recommends no packages.
-- no debconf information
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