[Bug 90198] Re: libpng/zlib segmentation fault in gnome-screenshot

[Erik Reckase]

** Description changed:

  Binary package hint: gnome-utils
  
  On my system, a fully updated Edgy Eft, 2.6.17-11-generic kernel on an
  Asus M2N-SLI with AMD X2 4600+ 65W processor, 2GB RAM, I intermittently
  get segmentation faults when taking screenshots (gnome-screenshot, from
  command-line or from print screen button.)  The contents of the Bug
  Buddy window are as follows:
  
  Memory status: size: 64118784 vsize: 0 resident: 64118784 share: 0 rss: 16994304 rss_rlim: 0
  CPU usage: start_time: 1173207500 rtime: 0 utime: 48 stime: 0 cutime:48 cstime: 0 timeout: 0 it_real_value: 0 frequency: 0
  
  Backtrace was generated from '/usr/bin/gnome-panel-screenshot'
  
  Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
  [Thread debugging using libthread_db enabled]
  [New Thread -1224976720 (LWP 6039)]
  0xffffe410 in __kernel_vsyscall ()
  #0  0xffffe410 in __kernel_vsyscall ()
  #1  0xb749e34b in __waitpid_nocancel () from /lib/tls/i686/cmov/libpthread.so.0
  #2  0xb7f5b1b6 in gnome_gtk_module_info_get () from /usr/lib/libgnomeui-2.so.0
  #3  <signal handler called>
  #4  0xb73cc37c in memcpy () from /lib/tls/i686/cmov/libc.so.6
  #5  0xb7291e8d in deflateCopy () from /usr/lib/libz.so.1
  #6  0xb7292a44 in deflateInit_ () from /usr/lib/libz.so.1
  #7  0xb7292f10 in deflate () from /usr/lib/libz.so.1
  #8  0xb714d101 in png_write_chunk () from /usr/lib/libpng12.so.0
  #9  0xb714d64b in png_write_chunk () from /usr/lib/libpng12.so.0
  #10 0xb7151774 in png_write_row () from /usr/lib/libpng12.so.0
  #11 0xb7151937 in png_write_rows () from /usr/lib/libpng12.so.0
  #12 0xb68a2a79 in fill_info ()
     from /usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-png.so
  #13 0x082b45e8 in ?? ()
  #14 0xbf938ef0 in ?? ()
  #15 0x00000001 in ?? ()
  #16 0x00000400 in ?? ()
  #17 0x00000008 in ?? ()
  #18 0x00000006 in ?? ()
  #19 0x00000000 in ?? ()
  
  Thread 1 (Thread -1224976720 (LWP 6039)):
  #0  0xffffe410 in __kernel_vsyscall ()
  No symbol table info available.
  #1  0xb749e34b in __waitpid_nocancel () from /lib/tls/i686/cmov/libpthread.so.0
  No symbol table info available.
  #2  0xb7f5b1b6 in gnome_gtk_module_info_get () from /usr/lib/libgnomeui-2.so.0
  No symbol table info available.
  #3  <signal handler called>
  No symbol table info available.
  #4  0xb73cc37c in memcpy () from /lib/tls/i686/cmov/libc.so.6
  No symbol table info available.
  #5  0xb7291e8d in deflateCopy () from /usr/lib/libz.so.1
  No symbol table info available.
  #6  0xb7292a44 in deflateInit_ () from /usr/lib/libz.so.1
  No symbol table info available.
  #7  0xb7292f10 in deflate () from /usr/lib/libz.so.1
  No symbol table info available.
  #8  0xb714d101 in png_write_chunk () from /usr/lib/libpng12.so.0
  No symbol table info available.
  #9  0xb714d64b in png_write_chunk () from /usr/lib/libpng12.so.0
  No symbol table info available.
  #10 0xb7151774 in png_write_row () from /usr/lib/libpng12.so.0
  No symbol table info available.
  #11 0xb7151937 in png_write_rows () from /usr/lib/libpng12.so.0
  No symbol table info available.
  #12 0xb68a2a79 in fill_info ()
     from /usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-png.so
  No symbol table info available.
  #13 0x082b45e8 in ?? ()
  No symbol table info available.
  #14 0xbf938ef0 in ?? ()
  No symbol table info available.
  #15 0x00000001 in ?? ()
  No symbol table info available.
  #16 0x00000400 in ?? ()
  No symbol table info available.
  #17 0x00000008 in ?? ()
  No symbol table info available.
  #18 0x00000006 in ?? ()
  No symbol table info available.
  #19 0x00000000 in ?? ()
  No symbol table info available.
  #0  0xffffe410 in __kernel_vsyscall ()
  
  This happens about 3 of every 5-10 calls to gnome-screenshot.
  Additionally, I regularly have problems writing PNG files from *any*
  application.  Segmentation faults that result from the other
  applications are at exactly the same place as the one listed above.
  
  I've performed memtest86+ for three cycles with no errors detected.
  
  I have tested this with a Live Edgy CD with the same results.  I have
- also tested this with Feisty Herd 5 with the same results.  I am in the
- process of testing this on Dapper (as soon as the torrent finishes.)  I
- will be happy to provide any further information as required - this is a
- big show-stopper for me.
+ also tested this with Feisty Herd 5 with the same results.  (Update: I
+ just tested the Live Dapper LTS CD, and I have not gotten a segmentation
+ fault in approximately 100 screenshots.)  I will be happy to provide any
+ further information as required - this is a big show-stopper for me.

-- 
libpng/zlib segmentation fault in gnome-screenshot
https://launchpad.net/bugs/90198