compiz crashed with SIGSEGV in nux::Property<bool>::operator=()

[los-nikos]

click multimedia button in home section of dash menu

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity 4.12.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-10.16-generic 3.0.4
Uname: Linux 3.0.0-10-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CheckboxSubmission: be2fbfde253285762d2d7eaf0e9f7c54
CheckboxSystem: edda5d4f616ca792bf437989cb597002
CrashCounter: 1
Date: Thu Sep 8 09:36:02 2011
ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x7f669010d030 <_ZN3nux8PropertyIbEaSERKb+32>: mov 0x18(%rdi),%rdi
 PC (0x7f669010d030) ok
 source "0x18(%rdi)" (0x00000428) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 nux::Property<bool>::operator=(bool const&) () from /usr/lib/compiz/libunityshell.so
 unity::dash::DashView::AnalyseLensURI(std::string) () from /usr/lib/compiz/libunityshell.so
 unity::dash::DashView::OnActivateRequest(_GVariant*) () from /usr/lib/compiz/libunityshell.so
 unity::UBusManager::OnCallback(_GVariant*, void*) () from /usr/lib/compiz/libunityshell.so
 ?? () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in nux::Property<bool>::operator=()
UpgradeStatus: Upgraded to oneiric on 2011-09-06 (2 days ago)
UserGroups: adm admin audio cdrom dialout dip floppy fuse plugdev sudo tape video

[Apport retracing service (apport)]

StacktraceTop:
 operator() (_A_a2=@0x7fffc7673b09, _A_a1=@0x421, this=0x428) at /build/buildd/unity-4.12.0/plugins/unityshell/src/SwitcherController.cpp:383
 Set (value=@0x7fffc7673b09, this=0x410) at /usr/include/Nux-1.0/NuxCore/Property-inl.h:105
 nux::Property<bool>::operator= (this=0x410, value=@0x7fffc7673b09) at /usr/include/Nux-1.0/NuxCore/Property-inl.h:75
 unity::dash::DashView::AnalyseLensURI (this=0x2dc6ed0, uri=<optimized out>) at /build/buildd/unity-4.12.0/plugins/unityshell/src/DashView.cpp:508
 unity::dash::DashView::OnActivateRequest (this=0x2dc6ed0, args=0x31c2c90) at /build/buildd/unity-4.12.0/plugins/unityshell/src/DashView.cpp:475

[Thibault Godouet (tglaunchpad)]

Hi,

In which version is this bug fixed?

My Ubuntu 11.10 is up to date, but I get a very similar crash of compiz under unity when I open the dash and click on "Internet Application".

The stack trace is :

#0 0x00007fafee45fd30 in nux::Property<bool>::operator=(bool const&) () from /usr/lib/compiz/libunityshell.so
#1 0x00007fafee45eff6 in unity::dash::DashView::AnalyseLensURI(std::string) () from /usr/lib/compiz/libunityshell.so
#2 0x00007fafee45f29d in unity::dash::DashView::OnActivateRequest(_GVariant*) () from /usr/lib/compiz/libunityshell.so
#3 0x00007fafee51a838 in unity::UBusManager::OnCallback(_GVariant*, void*) () from /usr/lib/compiz/libunityshell.so
#4 0x00007fafee528e99 in ?? () from /usr/lib/compiz/libunityshell.so
#5 0x00007faffef07a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007faffef08258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7 0x00007faffef08792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x000000000042e856 in CompScreen::eventLoop() ()
#9 0x000000000042221a in main ()

and in /var/log/messages I get:

Dec 21 10:11:09 myworkstation kernel: [ 6653.241530] compiz[13070]: segfault at 428 ip 00007fafee45fd30 sp 00007fff2bd22450 error 4 in libunityshell.so[7fafee36e000+225000]

I have a core dump.

I have other problems in the dash too that may or may not be related:
- when I click on "more apps", nothing happens (i.e. it doesn't show the list of applications)
- when I search for an application in dash (e.g. synaptics), the application is not found and I only get results on music files

Does it look like the same problem, or should I open a different ticket?

Thanks,
Thibault.

[Thibault Godouet (tglaunchpad)]

compiz unity core file.
I run compiz 1:0.9.6+bzr20110929-0ubuntu6, unity 4.24.0-0ubuntu2b1, and dash 0.5.5.1-7.4ubuntu1.