compiz crashed with SIGSEGV in drisw_update_tex_buffer()

[A. sleeping.li0n]

Description: Ubuntu precise (development branch)
Release: 12.04

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CrashCounter: 1
Date: Mon Feb 20 15:41:11 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120125)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x7fcfe041a826: mov %dl,(%r12)
 PC (0x7fcfe041a826) ok
 source "%dl" ok
 destination "(%r12)" (0x1032bcad0) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
 ?? () from /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
 TfpTexture::enable(GLTexture::Filter) () from /usr/lib/compiz/libopengl.so
 PrivateGLScreen::paintBackground(CompRegion const&, bool) () from /usr/lib/compiz/libopengl.so
Title: compiz crashed with SIGSEGV in TfpTexture::enable()
UpgradeStatus: Upgraded to precise on 2012-02-18 (1 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 drisw_update_tex_buffer (drawable=<optimized out>, ctx=<optimized out>, res=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:58
 dri_set_tex_buffer2 (pDRICtx=<optimized out>, target=3553, format=8409, dPriv=<optimized out>) at dri_drawable.c:230
 TfpTexture::enable (this=0x259b750, filter=GLTexture::Fast) at /build/buildd/compiz-0.9.7.0~bzr2995/plugins/opengl/src/texture.cpp:599
 PrivateGLScreen::paintBackground (this=0x2292950, region=..., transformed=false) at /build/buildd/compiz-0.9.7.0~bzr2995/plugins/opengl/src/paint.cpp:186
 PrivateGLScreen::paintOutputRegion (this=0x2292950, transform=..., region=..., output=<optimized out>, mask=3) at /build/buildd/compiz-0.9.7.0~bzr2995/plugins/opengl/src/paint.cpp:327

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 927168, so it 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. Feel free to continue to report any other bugs you may find.