compiz crashed with SIGSEGV in intel_miptree_release()

[Guilherme Salgado]

I just got this when I minimized a window. Looks like bug 926379 but I have libglu1-mesa 8.0.1-0ubuntu2 where that should be fixed.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Tue Feb 28 11:43:09 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x7f03f05165a9 <intel_miptree_release+9>: mov (%rdi),%rcx
 PC (0x7f03f05165a9) ok
 source "(%rdi)" (0x00000220) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 intel_miptree_release () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 intel_update_renderbuffers () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 intelSetTexBuffer2 () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
 TfpTexture::bindPixmapToTexture(unsigned long, int, int, int) () from /usr/lib/compiz/libopengl.so
 boost::detail::function::function_invoker4<GLTexture::List (*)(unsigned long, int, int, int), GLTexture::List, unsigned long, int, int, int>::invoke(boost::detail::function::function_buffer&, unsigned long, int, int, int) () from /usr/lib/compiz/libopengl.so
Title: compiz crashed with SIGSEGV in intel_miptree_release()
UpgradeStatus: Upgraded to precise on 2012-01-17 (42 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #926379, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

[Bryce Harrington (bryce)]

Hi Guilherme,

Thanks for flagging this intel_miptree_release() crash still happens with 8.0.1 mesa, since we'd understood that version fixed these issues.

However, apport appears to have gone to lunch and not collected a backtrace or log files, etc. Perhaps since it believes this is a dupe it didn't try? Anyway, we may need to have you gather these files manually.

See if you can reproduce the crash while running unity in gdb. (Try maximize/minimize windows a bunch, perhaps with some other graphical things running in the background, and maybe switch desktops back and forth.) Then when it crashes collect a full backtrace. Also attach your /var/log/Xorg.0.log, `sudo dmesg`, and your ~/.xsession-errors. Note that this latter file can sometimes include passwords or other private details so you may want to edit it down; we really only need the lines immediately leading up to the crash, to understand what was going on.

[Bryce Harrington (bryce)]

I've re-marked the master bug to start re-collecting apport info. I'll re-dupe this to that one since it's been reopened.