Crashing in mesa around here:

mesa-git-ubuntu/src/mesa/drivers/dri/i915/intel_context.c:
   /* Release the buffer storage now in case we have to return early            
                         
    * due to failure to allocate new storage.                                   
                         
    */
   if (buffer->attachment == __DRI_BUFFER_HIZ) {
      intel_miptree_release(&rb->mt->hiz_mt);
   } else {
      intel_miptree_release(&rb->mt);
   }

Guess it's a regression in mesa 8?  Probably should go upstream; would
be helpful to know steps to reproduce first though.

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: Confirmed => Triaged

** Description changed:

  i just update
+ 
+ <czajkowski> bryceh: alt tab through applications fast
+ <czajkowski> vlc thunderbird, 2 terminals and 2 chromes out
+ <czajkowski> seems to make  it have a hissy fit
  
  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: unity 5.2.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-12.21-ux31 3.2.2
  Uname: Linux 3.2.0-12-ux31 x86_64
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Fri Feb  3 23:10:11 2012
  ExecutablePath: /usr/bin/compiz
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 
(20120125)
  ProcCmdline: compiz
  SegvAnalysis:
-  Segfault happened at: 0x7f109783fd49 <intel_miptree_release+9>:      mov    
(%rdi),%rcx
-  PC (0x7f109783fd49) ok
-  source "(%rdi)" (0x00000220) not located in a known VMA region (needed 
readable region)!
-  destination "%rcx" ok
+  Segfault happened at: 0x7f109783fd49 <intel_miptree_release+9>:      mov    
(%rdi),%rcx
+  PC (0x7f109783fd49) 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
+  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 2012-02-03 (0 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

** Package changed: xserver-xorg-video-intel (Ubuntu) => mesa (Ubuntu)

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/926379

Title:
  compiz crashed with SIGSEGV in intel_miptree_release()

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