compiz crashed with SIGSEGV in CompWindow::serverBorderRect()

Bug Description

I want to install ubuntu tweak after upgrading to 11.10.

but today the software center told me that the list of PPA has been incorrect.so the center ask me if i'd like to fix the problem.Then i click yes,and it crash for 1min.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.8.2-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
Date: Fri Aug 26 18:04:56 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: compiz
ProcEnviron:
LANGUAGE=zh_CN:zh
PATH=(custom, no user)
LANG=zh_CN.UTF-8
SHELL=/bin/bash
SegvAnalysis:
Segfault happened at: 0x8099b83 <_ZNK10CompWindow16serverBorderRectEv+19>: mov 0x2c(%eax),%eax
PC (0x08099b83) ok
source "0x2c(%eax)" (0x0000002c) not located in a known VMA region (needed readable region)!
destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
CompWindow::serverBorderRect() const ()
GridScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libgrid.so
CompScreen::handleEvent(_XEvent*) ()
WallScreen::handleEvent(_XEvent*) () from /usr/lib/compiz/libwall.so
CompScreen::handleEvent(_XEvent*) ()
Title: compiz crashed with SIGSEGV in CompWindow::serverBorderRect()
UpgradeStatus: Upgraded to oneiric on 2011年08月25日 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

StacktraceTop:
CompWindow::serverBorderRect (this=0x0) at /build/buildd/compiz-0.9.5.92+bzr2791/src/windowgeometry.cpp:185
GridScreen::handleEvent (this=0x8666d08, event=0xbffa58fc) at /build/buildd/compiz-plugins-main-0.9.5.92.bzr17/grid/src/grid.cpp:586
CompScreen::handleEvent (this=0x842e4d0, event=0xbffa58fc) at /build/buildd/compiz-0.9.5.92+bzr2791/src/event.cpp:986
WallScreen::handleEvent (this=0x86a8ad0, event=0xbffa58fc) at /build/buildd/compiz-plugins-main-0.9.5.92.bzr17/wall/src/wall.cpp:534
CompScreen::handleEvent (this=0x842e4d0, event=0xbffa58fc) at /build/buildd/compiz-0.9.5.92+bzr2791/src/event.cpp:986

From the provided stacktrace this look more like a bug in compiz than in unity itself. I've added compiz to the affected packages.

Definitely a compiz issue: it's a crash in CompWindow::serverBorderRect() probably caused by "priv" being null (hence the offset within the record).

@thomas: go ahead if you want to provide a fix

Hello Christopher, or anyone else affected,

Accepted compiz-plugins-main into oneiric-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!

How to reproducte this ? I think the reporter only could provide feedback to this

I'm on the proposed Repository

I got this bug, but I can't just reproduce it. It happened pseudo-randomly, and I don't know of any specific steps I could take to make the crash happen again.

I've got this bug once but so far It looks like it is ok. At least there is no regression.

This bug was fixed in the package compiz-plugins-main - 1:0.9.6-0ubuntu4

---------------
compiz-plugins-main (1:0.9.6-0ubuntu4) oneiric-proposed; urgency=low

* debian/patches/fix-872161.patch:
- When grabbing a window to demaximize it after dragging it up,
sometimes the position will not be where you expect it to be
(LP: #872161)

compiz-plugins-main (1:0.9.6-0ubuntu3) oneiric-proposed; urgency=low

* Cherry-pick upstream fixes:
- unmaximizable windows still show orange glow but fail to maximize
(LP: #827560)
- compiz crashed with SIGSEGV in CompWindow::serverBorderRect()
(LP: #834585)
- Workspace switcher makes windows lose decorations (LP: #853951)
- Windows get corrupted sometimes when semi-maximizing them (LP: #865177)
- Windows like gnome-terminal have awkward space around them after being
semi-maximized (LP: #865179)
- Grid plugin behaviour random (LP: #862260)
- Don't apply snapping to maximized windows (LP: #862261)
- snap movements can cause infinite loops in window movements (LP: #860646)
- it is possible to see a window in it's pre-animation state during unmap
animations (LP: #864476)
- Rendering glitches when resuming from expo mode (LP: #868121)
-- Didier Roche <email address hidden> 2011年10月12日 10:49:59 +0200

Fix missing upstream (see bug 910698).