apport-gtk crashed with SIGSEGV in composite_line()

StacktraceTop:
 composite_line (weights=0xa5f6800, n_x=2, n_y=2, dest=0xb54ec21c <Address 0xb54ec21c out of bounds>, dest_x=0, dest_end=0xb54ec258 <Address 0xb54ec258 out of bounds>, dest_channels=4, dest_has_alpha=1, src=0xa5fc880, src_channels=4, src_has_alpha=1, x_init=0, x_step=65536, src_width=16, check_size=0, color1=0, color2=0) at pixops.c:637
 pixops_process (dest_buf=0xb54ec21c <Address 0xb54ec21c out of bounds>, render_x0=0, render_y0=0, render_x1=16, render_y1=16, dest_rowstride=192, dest_channels=4, dest_has_alpha=1, src_buf=0xa5f8c00 "", src_width=16, src_height=16, src_rowstride=64, src_channels=4, src_has_alpha=1, scale_x=1, scale_y=1, check_x=0, check_y=0, check_size=0, color1=0, color2=0, filter=0xbfa64098, line_func=0xb624a360 <composite_line>, pixel_func=0xb624b650 <composite_pixel>) at pixops.c:1352
 _pixops_composite_real (overall_alpha=255, interp_type=PIXOPS_INTERP_BILINEAR, scale_y=1, scale_x=<optimized out>, src_has_alpha=1, src_channels=4, src_rowstride=64, src_height=16, src_width=16, src_buf=0xa5f8c00 "", dest_has_alpha=1, dest_channels=4, dest_rowstride=192, render_y1=<optimized out>, render_x1=<optimized out>, render_y0=<optimized out>, render_x0=<optimized out>, dest_buf=0xb54ec21c <Address 0xb54ec21c out of bounds>) at pixops.c:1810
 _pixops_composite (dest_buf=0xb54eae34 <Address 0xb54eae34 out of bounds>, dest_width=48, dest_height=48, dest_rowstride=192, dest_channels=4, dest_has_alpha=1, src_buf=0xa5f8c00 "", src_width=16, src_height=16, src_rowstride=64, src_channels=4, src_has_alpha=1, dest_x=26, dest_y=26, dest_region_width=16, dest_region_height=16, offset_x=26, offset_y=26, scale_x=1, scale_y=1, interp_type=PIXOPS_INTERP_BILINEAR, overall_alpha=255) at pixops.c:1877
 gdk_pixbuf_composite (src=0xa5bd838, dest=0xa5adf50, dest_x=26, dest_y=26, dest_width=16, dest_height=16, offset_x=<optimized out>, offset_y=<optimized out>, scale_x=1, scale_y=1, interp_type=GDK_INTERP_BILINEAR, overall_alpha=255) at gdk-pixbuf-scale.c:214

Status changed to 'Confirmed' because the bug affects multiple users.

Le mercredi 18 avril 2012 à 15:03 +0000, Steve Langasek a écrit :

> ** Changed in: apport (Ubuntu)
> Importance: Medium => High
>

Thank you

Please check if bug 937249 is related and can be duplicated to this one.

Sorry, I meant please check if bug 985049 is related to this bug and can be duplicated here.

On Wed, Apr 18, 2012 at 04:30:46PM -0000, Walter Garcia-Fontes wrote:
> Sorry, I meant please check if bug 985049 is related to this bug and can
> be duplicated here.

It is not. If it had been, the apport retracer would have automatically
marked it as a duplicate.

Martin, this might be something to take a look at, since it prevents people from reporting bugs?

Dear Martin and Steve,

I am a novice to Linux system. I upgraded from Ubuntu 11 to Ubuntu 12. It
was working fine. Later when I went for software upgrade option on the
system, the taskbar (the one that is on the left side of the screen)
disappeared after the upgrade. Due to this I am unable to open even a xterm
to find the issue. The restart option also went missing after the software
upgrade.

Some observations:
This issue does not appear on the Ubuntu 2D, the task bar works well in the
Ubuntu 2D unlike Ubuntu. This issue has been reported earlier on some of
the Ubuntu forums, however I am unable to find the solution to this. I
installed AWN and I am able to work but there are issue like - unable to
work on xterm or awn terminal, compiz error, the browser does not maximize.
If I open change background window, there is no close button and the window
stays back.

I hope this helps you in fixing this bug.

Thanking you,
With regards,
S. Jagadeesh

On Wed, Apr 18, 2012 at 11:32 PM, Steve Langasek <
<email address hidden>> wrote:

> Martin, this might be something to take a look at, since it prevents
> people from reporting bugs?
>
> ** Changed in: apport (Ubuntu)
> Assignee: (unassigned) => Martin Pitt (pitti)
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (984579).
> https://bugs.launchpad.net/bugs/937249
>
> Title:
> apport-gtk crashed with SIGSEGV in composite_line()
>
> Status in “apport” package in Ubuntu:
> Confirmed
>
> Bug description:
> Simple Scan application crashed in the middle of a multi-page scan
> job.
>
> ProblemType: Crash
> DistroRelease: Ubuntu 12.04
> Package: apport-gtk 1.92-0ubuntu1
> ProcVersionSignature: Ubuntu 3.2.0-17.26-generic-pae 3.2.6
> Uname: Linux 3.2.0-17-generic-pae i686
> ApportVersion: 1.92-0ubuntu1
> Architecture: i386
> CrashCounter: 1
> Date: Mon Feb 20 15:54:30 2012
> ExecutablePath: /usr/share/apport/apport-gtk
> InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386
> (20120104)
> InterpreterPath: /usr/bin/python2.7
> PackageArchitecture: all
> ProcCmdline: /usr/bin/python /usr/share/apport/apport-gtk
> ProcEnviron:
> LANGUAGE=en_CA:en
> PATH=(custom, no user)
> LANG=en_CA.UTF-8
> SHELL=/bin/bash
> SegvAnalysis:
> Segfault happened at: 0xb624a4b8: mov %al,(%edi)
> PC (0xb624a4b8) ok
> source "%al" ok
> destination "(%edi)" (0xb54ec21c) in non-writable VMA region:
> 0xb5409000-0xb57f7000 r--p /usr/share/icons/gnome/icon-theme.cache
> SegvReason: writing VMA /usr/share/icons/gnome/icon-theme.cache
> Signal: 11
> SourcePackage: apport
> StacktraceTop:
> ?? () from /usr/lib/i386-linux-gnu/libgdk_pixbuf-2.0.so.0
> ?? () from /usr/lib/i386-linux-gnu/libgdk_pixbuf-2.0.so.0
> ?? () from /usr/lib/i386-linux-gnu/libgdk_pixbuf-2.0.so.0
> gdk_pixbuf_composite () from
> /usr/lib/i386-linux-gnu/libgdk_pixbuf-2.0.so.0
> ffi_call_SYSV () from /usr/lib/i386-linux-gnu/libffi.so.6
> Title: apport-gtk crashed with SIGSEGV in gdk_pixbuf_composite()
> UpgradeStatus: Upgraded to precise on 2012-02-14 (6 days ago)
> UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
>
> To manage notifi...

I have never seen this crash myself, so I suppose something on your system is different. Is there some reporter here who regularly gets this crash? It should happen if you try to report a crash against an application with a desktop file. You can create a fake crash with

  gedit &
  killall -SEGV gedit

Then apport should pop up and show the crash (please do not actually report that). You should see the GEdit icon with a stop sign overlay on it. Can anyone reproduce the crash with that?

Are you using a non-standard theme, or something else than Unity?

On Fri, Apr 20, 2012 at 17:54, Martin Pitt <email address hidden> wrote:

> Are you using a non-standard theme, or something else than Unity?

I'm using GNOME Shell and Adwaita, everything as close to default
GNOME as i can achieve.

Thanks for that hint. I can reproduce the crash under GNOME shell and Adwaita theme.

" gedit &
  killall -SEGV gedit"

... You should see the GEdit icon with a stop sign overlay on it. Can anyone reproduce the crash with that?"

Yes, I can reproduce it and I get the stop sign and icon. I'm running Unity 3D on a precise upgrade using the Ambiance theme today.

Fixed in trunk r2297.

Hello John, or anyone else affected,

Accepted apport into precise-proposed. The package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Can't reproduce the crash anymore with the proposed package, so I'm marking this verification-done.

This bug was fixed in the package apport - 2.0.1-0ubuntu6

---------------
apport (2.0.1-0ubuntu6) precise-proposed; urgency=low

  * Cherry-pick from trunk:
    - hookutils.py, recent_logfile(): Use a default limit of 10000 lines and
      call "tail" instead of reading the whole file. This protects against
      using up all memory when there are massive repeated log messages.
      (LP: #984256)
    - apport-gtk: Do not assume that an icon requested for size 42 actually
      delivers size 42; some themes do not have this available and deliver a
      smaller one instead, causing overflows. Also, copy the image as
      gtk_icon_theme_load_icon() returns a readonly result which we must not
      modify. Fixes crashes when using themes other than the standard Ubuntu
      ones. (LP: #937249)
 -- Martin Pitt <email address hidden> Fri, 20 Apr 2012 18:53:24 +0200