compiz crashed with SIGSEGV in g_strcmp0()

Bug Description

just typed unity in terminal and i had this crash.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.8.2-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-9.13-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
CrashCounter: 1
Date: Tue Aug 23 19:19:08 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.04.2 LTS "Lucid Lynx" - Release i386 (20110211.1)
ProcCmdline: compiz
SegvAnalysis:
Segfault happened at: 0x4eed08: mov (%ecx),%al
PC (0x004eed08) ok
source "(%ecx)" (0x00000018) not located in a known VMA region (needed readable region)!
destination "%al" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
?? () from /lib/i386-linux-gnu/libc.so.6
g_strcmp0 () from /lib/i386-linux-gnu/libglib-2.0.so.0
unity::PanelTray::FilterTrayCallback(_NaTray*, _NaTrayChild*, unity::PanelTray*) () from /usr/lib/compiz/libunityshell.so
?? () from /usr/lib/libunity-misc.so.4
g_cclosure_marshal_VOID__OBJECT () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: compiz crashed with SIGSEGV in g_strcmp0()
UpgradeStatus: Upgraded to oneiric on 2011年08月23日 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

Stacktrace:
#0 0x004eed08 in tr_where (caller=0xa0a1b28) at mtrace.c:116
len = <optimized out>
buf = 0x18 <Address 0x18 out of bounds>
info = <error reading variable info (Cannot access memory at address 0x215f967)>
Cannot access memory at address 0x215f987
StacktraceTop: tr_where (caller=0xa0a1b28) at mtrace.c:116

Looks like FilterTrayCallback is not being unregistered.

Bug 868868 is essentially a duplicate of this one, but with a slightly different stack. Please remember to update it too.

Hello vassilis, or anyone else affected,

Accepted unity 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!

This bug was fixed in the package unity - 4.28.0-0ubuntu2

---------------
unity (4.28.0-0ubuntu2) oneiric-proposed; urgency=low

* Cherry-pick some additional fixes:
- fix a regression where transparency is setup on the panel (LP: #830949)
- the wrong commit causing a crash was revert. Revert the revert and
revert the right guilty commit.

unity (4.28.0-0ubuntu1) oneiric-proposed; urgency=low

* New upstream release.
- don't segfault in geis_configuration_get_value() (lp: #850623)
- get focus on dash by pressing the super key first time after login
(lp: #860805)
- clicking on panel when dash is open no longer causes maximized window
to raise (lp: #873100)
- window management, alt-tab - After using 'show desktop' to minimise all
windows, opening any new window also incorrectly restores all
the minimised windows (lp: #871801)
- compiz crashed with SIGSEGV in
unity::switcher::SwitcherModel::DetailSelectionWindow() (lp: #834630)
- compiz crashed with SIGSEGV in g_strcmp0() (lp: #832151)
- compiz crashed with SIGSEGV in nux::BaseWindow::GetInputWindowId()
(when onboard is used) (lp: #865890)
- fix multi-monitor crashers (lp: #838128, #864037, #864784, #868120)
- Fix SIGSEGV after SwitcherController desctruction (lp: #887465)
- Fix for "right-clicking launcher when choosing a workspace causes
quicklists to freeze" (lp: #791810)
* debian/patches/add_postrelease_buildfix.patch:
- add post-release fix to build in a clean env
* backport some additional reverts or regression fixes
-- Didier Roche <email address hidden> 2012年1月19日 09:54:44 +0100