compiz crashed with SIGSEGV in DecorWindow::computeShadowRegion()

[Christopher Thiel]

Binary package hint: unity

compiz crashed while attempting to vertically maximize a window.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CrashCounter: 1
Date: Wed Apr 6 12:35:12 2011
ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f90b2223977 <_ZN11DecorWindow19computeShadowRegionEv+23>: mov 0x40(%rdi),%rsi
 PC (0x7f90b2223977) ok
 source "0x40(%rdi)" (0x44e8a7eb) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 DecorWindow::computeShadowRegion() () from /usr/lib/compiz/libdecor.so
 DecorWindow::resizeNotify(int, int, int, int) () from /usr/lib/compiz/libdecor.so
 CompWindow::resizeNotify(int, int, int, int) ()
 CompWindow::resizeNotify(int, int, int, int) ()
 SnapWindow::resizeNotify(int, int, int, int) () from /usr/lib/compiz/libsnap.so
Title: compiz crashed with SIGSEGV in DecorWindow::computeShadowRegion()
UpgradeStatus: Upgraded to natty on 2011-03-13 (23 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 DecorWindow::computeShadowRegion (this=0x44e8a7ab) at /build/buildd/compiz-0.9.4git20110322/plugins/decor/src/decor.cpp:80
 DecorWindow::resizeNotify (this=0x4f7cce0, dx=0, dy=0, dwidth=0, dheight=628) at /build/buildd/compiz-0.9.4git20110322/plugins/decor/src/decor.cpp:1956
 CompWindow::resizeNotify (this=0x465c760, dx=<value optimized out>, dy=<value optimized out>, dwidth=<value optimized out>, dheight=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/window.cpp:1821
 CompWindow::resizeNotify (this=0x465c760, dx=<value optimized out>, dy=<value optimized out>, dwidth=<value optimized out>, dheight=<value optimized out>) at /build/buildd/compiz-0.9.4git20110322/src/window.cpp:1821
 SnapWindow::resizeNotify (this=0x5efde60, dx=0, dy=0, dwidth=0, dheight=628) at /build/buildd/compiz-plugins-main-0.9.4git20110322/snap/src/snap.cpp:570

[Neil J. Patel (njpatel)]

Sam fixed this, please re-open if this is not the case with latest Oneiric.