compiz crashed with SIGSEGV in std::list<unity::debug::Introspectable*, std::allocator<unity::debug::Introspectable*> >::remove()

[Octavian Damiean]

This crash occured while Unity 5.0 testing at the step where you have to change a launcher icon's position and remove or add an icon to the launcher and then restart Unity by clicking the Test button.

Unity was restarted but presented a crash report.

Steps to reporduce:
1.) Run Unity Testing
2.) Get to the described test.
3.) Follow the instructions.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: libnux-2.0-0 2.0.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic-pae 3.2.0
Uname: Linux 3.2.0-8-generic-pae i686
ApportVersion: 1.90-0ubuntu2
Architecture: i386
Date: Fri Jan 13 22:32:36 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120108)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0xb4788580 <_ZNSt4listIPN5unity5debug14IntrospectableESaIS3_EE6removeERKS3_+48>: cmp %edx,0x8(%esi)
 PC (0xb4788580) ok
 source "%edx" ok
 destination "0x8(%esi)" (0x00000008) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 std::list<unity::debug::Introspectable*, std::allocator<unity::debug::Introspectable*> >::remove(unity::debug::Introspectable* const&) () from /usr/lib/compiz/libunityshell.so
 unity::debug::Introspectable::~Introspectable() () from /usr/lib/compiz/libunityshell.so
 unity::dash::SearchBar::~SearchBar() () from /usr/lib/compiz/libunityshell.so
 unity::dash::SearchBar::~SearchBar() () from /usr/lib/compiz/libunityshell.so
 nux::Object::Destroy() () from /usr/lib/libnux-core-2.0.so.0
Title: compiz crashed with SIGSEGV in std::list<unity::debug::Introspectable*, std::allocator<unity::debug::Introspectable*> >::remove()
UpgradeStatus: Upgraded to precise on 2012-01-12 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 std::list<unity::debug::Introspectable*, std::allocator<unity::debug::Introspectable*> >::remove (this=0x8bce03c, __value=@0xbf7fe0cc) at /usr/include/c++/4.6/bits/list.tcc:249
 unity::debug::Introspectable::~Introspectable (this=0x89be300, __in_chrg=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/Introspectable.cpp:34
 unity::dash::SearchBar::~SearchBar (this=0x89be300, __in_chrg=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/DashSearchBar.cpp:127
 unity::dash::SearchBar::~SearchBar (this=0x89be300, __in_chrg=<optimized out>) at /build/buildd/unity-5.0.0/plugins/unityshell/src/DashSearchBar.cpp:133
 nux::Object::Destroy (this=0x89be314) at ./Object.cpp:338

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jean-Baptiste Lallement (jibel)]

Thanks for your report.

Is anyone still experiencing this with latest version of libnux-2.0-0 ( 2.2.0-0ubuntu1 ) ?

[PC Dienstverlening - B. van Munster (bram-pcdienstverlening)]

Hello Jean-Baptiste,

I had one crash today (before update-manager kicked in, happened while
connecting to a wireless network. When I checked the box "show password"
compiz crashed.
Bug report was created and sent.

Best regards,

Bram van Munster.

Jean-Baptiste Lallement schreef op do 09-02-2012 om 10:38 [+0000]:

> Thanks for your report.
>
> Is anyone still experiencing this with latest version of libnux-2.0-0 (
> 2.2.0-0ubuntu1 ) ?
>
> ** Tags added: rls-mgr-p-tracking
>
> ** Changed in: nux (Ubuntu)
> Status: Confirmed => Incomplete
>

[Thomi Richards (thomir-deactivatedaccount)]

This was fixed in unity, revision 1876, on Sun 2012-01-29. When I fixed it I didn't see this bug report.

If it still happens in the latest uinity builds it'd be good to get another stack trace.

Cheers,