unity-panel-service crashed with SIGSEGV in thread_memory_from_self()

[Chris Halse Rogers]

This crash consistently happens when trying to move the volume slider of indicator-sound.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0-3.4-generic 3.0.0-rc5
Uname: Linux 3.0-3-generic x86_64
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,imgjpeg,decor,imgsvg,snap,text,grid,imgpng,gnomecompat,unitymtgrabhandles,place,vpswitch,compiztoolbox,notification,resize,regex,animation,move,loginout,mousepoll,expo,workarounds,resizeinfo,session,wall,ezoom,staticswitcher,fade,scale,unityshell,scalefilter,scaleaddon]
Date: Wed Jul 6 12:37:01 2011
ExecutablePath: /usr/lib/unity/unity-panel-service
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110117)
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/zsh
 LC_MESSAGES=en_AU.utf8
 LANGUAGE=en_AU:en_GB:en
 PATH=(custom, no user)
 LANG=en_AU.utf8
SegvAnalysis:
 Segfault happened at: 0x7f60831bff5a <g_slice_alloc+538>: callq *0x60(%rax)
 PC (0x7f60831bff5a) ok
 source "*0x60(%rax)" ok
 destination "(%rsp)" (0x7fff37fa0000) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 thread_memory_from_self (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:441
 g_slice_alloc (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:825
 g_slice_alloc0 (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:854
 g_signal_emit_valist (instance=0x171e030, signal_id=33, detail=0, var_args=0x7fff37fa01c8) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:2951
 g_signal_emit (instance=<value optimised out>, signal_id=<value optimised out>, detail=<value optimised out>) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:3044
Title: unity-panel-service crashed with SIGSEGV in thread_memory_from_self()
UpgradeStatus: Upgraded to oneiric on 2011-06-17 (18 days ago)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare sbuild

[Apport retracing service (apport)]

StacktraceTop:
 thread_memory_from_self (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:441
 g_slice_alloc (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:825
 g_slice_alloc0 (mem_size=48) at /build/buildd/glib2.0-2.29.8/./glib/gslice.c:854
 g_signal_emit_valist (instance=0x171e030, signal_id=33, detail=0, var_args=0x7fff37fa01c8) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:2951
 g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.29.8/./gobject/gsignal.c:3044

[Neil J. Patel (njpatel)]

Hi, I believe this is now fixed with the latest Oneiric which changes the way the sound slider works. If it still happens on latest Oneiric, please re-open this bug, thanks!