[Bug 286366] Re: segfault in GCGraphBuilder::AddNode

Brian J. Murrell brian at interlinx.bc.ca
Mon Oct 20 23:35:18 UTC 2008


Not at will.  It happens fairly frequently though.  Several times a day.
Here's another one:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7de66c0 (LWP 14458)]
GCGraphBuilder::AddNode (this=0xbfcb98ac, s=0xb04b8268, aParticipant=0x98a5c84)
    at nsCycleCollector.cpp:1287
1287	nsCycleCollector.cpp: No such file or directory.
	in nsCycleCollector.cpp
Current language:  auto; currently c++
(gdb) where
#0  GCGraphBuilder::AddNode (this=0xbfcb98ac, s=0xb04b8268, aParticipant=0x98a5c84)
    at nsCycleCollector.cpp:1287
#1  0xb7a4d401 in GCGraphBuilder::NoteScriptChild (this=0xbfcb98ac, langID=2, child=0xb04b8268)
    at nsCycleCollector.cpp:1237
#2  0xb729b6b0 in NoteJSChild (trc=0x1e116820, thing=0xb04b8268, kind=0) at nsXPConnect.cpp:744
#3  0xb7d83df9 in JS_CallTracer (trc=0xbfcb9800, thing=0xb04b8268, kind=0) at jsgc.c:2449
#4  0xb7d99ecc in js_TraceObject (trc=0xbfcb9800, obj=0x12686780) at jsobj.c:5082
#5  0xb7d83bba in JS_TraceChildren (trc=0xbfcb9800, thing=0x12686780, kind=0) at jsgc.c:2233
#6  0xb729b770 in nsXPConnect::Traverse (this=0x98a5c70, p=0x12686780, cb=@0xbfcb98ac)
    at nsXPConnect.cpp:935
#7  0xb7a4cc84 in GCGraphBuilder::Traverse (this=0xbfcb98ac, aPtrInfo=0xadd5c134)
    at nsCycleCollector.cpp:1319
#8  0xb7a4cce7 in nsCycleCollector::MarkRoots (this=0x98436b0, builder=@0xbfcb98ac)
    at nsCycleCollector.cpp:1513
#9  0xb7a4d795 in nsCycleCollector::BeginCollection (this=0x98436b0) at nsCycleCollector.cpp:2368
#10 0xb7a4d7d8 in nsCycleCollector_beginCollection () at nsCycleCollector.cpp:2910
#11 0xb729c6cc in XPCCycleCollectGCCallback (cx=0x9b0b368, status=JSGC_MARK_END)
    at nsXPConnect.cpp:440
#12 0xb7d84d7a in js_GC (cx=0x9b0b368, gckind=GC_NORMAL) at jsgc.c:3239
#13 0xb7d6163a in JS_GC (cx=0x9b0b368) at jsapi.c:2469
#14 0xb729b950 in nsXPConnect::Collect (this=0x98a5c70) at nsXPConnect.cpp:529
#15 0xb7a4d8fa in nsCycleCollector::Collect (this=0x98436b0, aTryCollections=1)
    at nsCycleCollector.cpp:2250
#16 0xb7a4da39 in nsCycleCollector_collect () at nsCycleCollector.cpp:2898
#17 0xb7648f42 in nsJSContext::CC () at nsJSEnvironment.cpp:3346
#18 0xb7649012 in nsJSContext::MaybeCC (aHigherProbability=1) at nsJSEnvironment.cpp:3397
#19 0xb76493c5 in nsUserActivityObserver::Observe (this=0x9b0abd8, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", aData=0x0) at nsJSEnvironment.cpp:291
#20 0xb7a1c9a0 in nsObserverList::NotifyObservers (this=0x9c9d4ac, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", someData=0x0) at nsObserverList.cpp:128
#21 0xb7a1cc6e in nsObserverService::NotifyObservers (this=0x9895fa0, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", someData=0x0) at nsObserverService.cpp:181
#22 0xb75747ff in nsEventStateManager::PreHandleEvent (this=0x148e5938, aPresContext=0x136dcac0, 
    aEvent=0xbfcbdf94, aTargetFrame=0x1473a868, aStatus=0xbfcbde4c, aView=0x12574c98)
    at nsEventStateManager.cpp:777
#23 0xb7401f5f in PresShell::HandleEventInternal (this=0x17bd30f8, aEvent=0xbfcbdf94, 
    aView=0x12574c98, aStatus=0xbfcbde4c) at nsPresShell.cpp:5911
#24 0xb7402674 in PresShell::HandlePositionedEvent (this=0x17bd30f8, aView=0x12574c98, 
    aTargetFrame=0x1473a868, aEvent=0xbfcbdf94, aEventStatus=0xbfcbde4c) at nsPresShell.cpp:5809
#25 0xb740285c in PresShell::HandleEvent (this=0x15653370, aView=0x16696e38, aEvent=0xbfcbdf94, 
    aEventStatus=0xbfcbde4c) at nsPresShell.cpp:5662
#26 0xb7642603 in nsViewManager::HandleEvent (this=0x12574c38, aView=0x16696e38, aPoint=
      {x = -1077158172, y = -1077157996}, aEvent=0xbfcbdf94, aCaptured=0) at nsViewManager.cpp:1382
#27 0xb7643ee0 in nsViewManager::DispatchEvent (this=0x12574c38, aEvent=0xbfcbdf94, 
    aStatus=0xbfcbdf30) at nsViewManager.cpp:1337
#28 0xb763ef7c in HandleEvent (aEvent=0xbfcbdf94) at nsView.cpp:168
#29 0xb7982630 in nsCommonWidget::DispatchEvent (this=0x18bd6408, aEvent=0xbfcbdf94, 
    aStatus=@0xbfcbe004) at nsCommonWidget.cpp:158
#30 0xb797d769 in nsWindow::OnMotionNotifyEvent (this=0x18bd6408, aWidget=0x13d0b8e8, 
    aEvent=0x9805720) at nsWindow.cpp:2026
#31 0xb797d8f1 in motion_notify_event_cb (widget=0x13d0b8e8, event=0x9805720) at nsWindow.cpp:4643
#32 0xb68bdef6 in _gtk_marshal_BOOLEAN__BOXED (closure=0x13bf3c50, return_value=0xbfcbe230, 
    n_param_values=2, param_values=0x16bf9800, invocation_hint=0xbfcbe21c, marshal_data=0xb797d8cc)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmarshalers.c:84
#33 0xb6d02c4b in IA__g_closure_invoke (closure=0x13bf3c50, return_value=0xbfcbe230, 
    n_param_values=2, param_values=0x16bf9800, invocation_hint=0xbfcbe21c)
    at /build/buildd/glib2.0-2.18.1/gobject/gclosure.c:767
#34 0xb6d19095 in signal_emit_unlocked_R (node=0x9810ea0, detail=0, instance=0x13d0b8e8, 
    emission_return=0xbfcbe368, instance_and_params=0x16bf9800)
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:3244
#35 0xb6d1a62b in IA__g_signal_emit_valist (instance=0x13d0b8e8, signal_id=48, detail=0, 
    var_args=0xbfcbe3c0 "��˿ W\200\t���\023�\223\235����\023�x\200\t")
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:2987
#36 0xb6d1ac26 in IA__g_signal_emit (instance=0x13d0b8e8, signal_id=48, detail=0)
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:3034
#37 0xb69d30ee in gtk_widget_event_internal (widget=0x13d0b8e8, event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkwidget.c:4745
#38 0xb68b6a0c in IA__gtk_propagate_event (widget=0x13d0b8e8, event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmain.c:2391
#39 0xb68b7db7 in IA__gtk_main_do_event (event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmain.c:1596
#40 0xb673250a in gdk_event_dispatch (source=0x97ef450, callback=0, user_data=0x0)
    at /build/buildd/gtk+2.0-2.14.3/gdk/x11/gdkevents-x11.c:2365
#41 0xb6c756f8 in IA__g_main_context_dispatch (context=0x97ef498)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2142
#42 0xb6c78da3 in g_main_context_iterate (context=0x97ef498, block=0, dispatch=1, self=0x97a8cb0)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2776
#43 0xb6c78f61 in IA__g_main_context_iteration (context=0x97ef498, may_block=0)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2839
#44 0xb7980f7c in nsAppShell::ProcessNextNativeEvent (this=0x98c6708, mayWait=0)
    at nsAppShell.cpp:144
#45 0xb7995fe4 in nsBaseAppShell::DoProcessNextNativeEvent (this=0x98c6708, mayWait=0)
    at nsBaseAppShell.cpp:151
#46 0xb79961ed in nsBaseAppShell::OnProcessNextEvent (this=0x98c6708, thr=0x981d6b0, mayWait=1, 
    recursionDepth=0) at nsBaseAppShell.cpp:278
#47 0xb7a4250e in nsThread::ProcessNextEvent (this=0x981d6b0, mayWait=1, result=0xbfcbe644)
    at nsThread.cpp:497
#48 0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x1e116820, mayWait=1) at nsThreadUtils.cpp:227
#49 0xb79962c4 in nsBaseAppShell::Run (this=0x98c6708) at nsBaseAppShell.cpp:170
#50 0xb782bab8 in nsAppStartup::Run (this=0x9909620) at nsAppStartup.cpp:181
#51 0xb7290508 in XRE_main (argc=2, argv=0xbfcc1da4, aAppData=0x97a8830) at nsAppRunner.cpp:3194
#52 0x080491ab in ?? ()
#53 0xb7dfe685 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#54 0x08048d11 in ?? ()
(gdb) thread apply all bt

Thread 9 (Thread 0xb26ffb90 (LWP 19489)):
#0  0xb80c2430 in __kernel_vsyscall ()
#1  0xb7ebef77 in poll () from /lib/tls/i686/cmov/libc.so.6
#2  0xb7d1ed8c in _pr_poll_with_poll (pds=0x9895240, npds=1, timeout=4294967295) at ptio.c:3895
#3  0xb72eda7b in nsSocketTransportService::Poll (this=0x9894d60, wait=1, interval=0xb26ff1e8)
    at nsSocketTransportService2.cpp:349
#4  0xb72edf70 in nsSocketTransportService::DoPollIteration (this=0x9894d60, wait=1)
    at nsSocketTransportService2.cpp:644
#5  0xb72ee21a in nsSocketTransportService::OnProcessNextEvent (this=0x9894d60, thread=0x1201f000, 
    mayWait=1, depth=1) at nsSocketTransportService2.cpp:523
#6  0xb7a4250e in nsThread::ProcessNextEvent (this=0x1201f000, mayWait=1, result=0xb26ff294)
    at nsThread.cpp:497
#7  0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x1, mayWait=1) at nsThreadUtils.cpp:227
#8  0xb72edc93 in nsSocketTransportService::Run (this=0x9894d60)
    at nsSocketTransportService2.cpp:565
#9  0xb7a4256c in nsThread::ProcessNextEvent (this=0x1201f000, mayWait=1, result=0xb26ff344)
    at nsThread.cpp:510
#10 0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x1, mayWait=1) at nsThreadUtils.cpp:227
#11 0xb7a42cd3 in nsThread::ThreadFunc (arg=0x1201f000) at nsThread.cpp:253
#12 0xb7d231e1 in _pt_root (arg=0x11f572b0) at ptthread.c:221
#13 0xb807550f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#14 0xb7ec97ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 6 (Thread 0xb5300b90 (LWP 14470)):
#0  0xb80c2430 in __kernel_vsyscall ()
#1  0xb80793a2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7d1bf9e in pt_TimedWait (cv=0x981d3e4, ml=0x982dc38, timeout=2155) at ptsynch.c:280
#3  0xb7d1cdc0 in PR_WaitCondVar (cvar=0x981d3e0, timeout=2155) at ptsynch.c:407
#4  0xb7a454bc in TimerThread::Run (this=0x982ddd8) at TimerThread.cpp:345
#5  0xb7a4256c in nsThread::ProcessNextEvent (this=0x994e858, mayWait=1, result=0xb5300344)
    at nsThread.cpp:510
#6  0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x80, mayWait=1) at nsThreadUtils.cpp:227
#7  0xb7a42cd3 in nsThread::ThreadFunc (arg=0x994e858) at nsThread.cpp:253
#8  0xb7d231e1 in _pt_root (arg=0x994ea60) at ptthread.c:221
#9  0xb807550f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0xb7ec97ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 5 (Thread 0xb4997b90 (LWP 14476)):
#0  0xb80c2430 in __kernel_vsyscall ()
#1  0xb8079075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7d1ce39 in PR_WaitCondVar (cvar=0x9c56638, timeout=4294967295) at ptsynch.c:405
#3  0xb784b266 in nsSSLThread::Run (this=0x9c565b0) at nsSSLThread.cpp:964
#4  0xb784ab9a in nsPSMBackgroundThread::nsThreadRunner (arg=0x9c565b0)
    at nsPSMBackgroundThread.cpp:44
#5  0xb7d231e1 in _pt_root (arg=0x9c56678) at ptthread.c:221
#6  0xb807550f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7ec97ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 4 (Thread 0xb392ab90 (LWP 14477)):
#0  0xb80c2430 in __kernel_vsyscall ()
#1  0xb8079075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7d1ce39 in PR_WaitCondVar (cvar=0x9c56808, timeout=4294967295) at ptsynch.c:405
#3  0xb784c2fe in nsCertVerificationThread::Run (this=0x9c56758)
    at nsCertVerificationThread.cpp:138
#4  0xb784ab9a in nsPSMBackgroundThread::nsThreadRunner (arg=0x9c56758)
    at nsPSMBackgroundThread.cpp:44
#5  0xb7d231e1 in _pt_root (arg=0x9c56848) at ptthread.c:221
#6  0xb807550f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb7ec97ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xb1efeb90 (LWP 17165)):
#0  0xb80c2430 in __kernel_vsyscall ()
#1  0xb8079075 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7d1ce39 in PR_WaitCondVar (cvar=0xa608c60, timeout=4294967295) at ptsynch.c:405
#3  0xb7d1ceb7 in PR_Wait (mon=0xa608ca0, timeout=4294967295) at ptsynch.c:584
#4  0xb7a41791 in nsEventQueue::GetEvent (this=0xa605a78, mayWait=1, result=0xb1efe304)
    at ../../dist/include/xpcom/nsAutoLock.h:340
#5  0xb7a42540 in nsThread::ProcessNextEvent (this=0xa605a58, mayWait=1, result=0xb1efe344)
    at nsThread.h:112
#6  0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x80, mayWait=1) at nsThreadUtils.cpp:227
#7  0xb7a42cd3 in nsThread::ThreadFunc (arg=0xa605a58) at nsThread.cpp:253
#8  0xb7d231e1 in _pt_root (arg=0xa608dd8) at ptthread.c:221
#9  0xb807550f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#10 0xb7ec97ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7de66c0 (LWP 14458)):
#0  GCGraphBuilder::AddNode (this=0xbfcb98ac, s=0xb04b8268, aParticipant=0x98a5c84)
    at nsCycleCollector.cpp:1287
#1  0xb7a4d401 in GCGraphBuilder::NoteScriptChild (this=0xbfcb98ac, langID=2, child=0xb04b8268)
    at nsCycleCollector.cpp:1237
#2  0xb729b6b0 in NoteJSChild (trc=0x1e116820, thing=0xb04b8268, kind=0) at nsXPConnect.cpp:744
#3  0xb7d83df9 in JS_CallTracer (trc=0xbfcb9800, thing=0xb04b8268, kind=0) at jsgc.c:2449
#4  0xb7d99ecc in js_TraceObject (trc=0xbfcb9800, obj=0x12686780) at jsobj.c:5082
#5  0xb7d83bba in JS_TraceChildren (trc=0xbfcb9800, thing=0x12686780, kind=0) at jsgc.c:2233
#6  0xb729b770 in nsXPConnect::Traverse (this=0x98a5c70, p=0x12686780, cb=@0xbfcb98ac)
    at nsXPConnect.cpp:935
#7  0xb7a4cc84 in GCGraphBuilder::Traverse (this=0xbfcb98ac, aPtrInfo=0xadd5c134)
    at nsCycleCollector.cpp:1319
#8  0xb7a4cce7 in nsCycleCollector::MarkRoots (this=0x98436b0, builder=@0xbfcb98ac)
    at nsCycleCollector.cpp:1513
#9  0xb7a4d795 in nsCycleCollector::BeginCollection (this=0x98436b0) at nsCycleCollector.cpp:2368
#10 0xb7a4d7d8 in nsCycleCollector_beginCollection () at nsCycleCollector.cpp:2910
#11 0xb729c6cc in XPCCycleCollectGCCallback (cx=0x9b0b368, status=JSGC_MARK_END)
    at nsXPConnect.cpp:440
#12 0xb7d84d7a in js_GC (cx=0x9b0b368, gckind=GC_NORMAL) at jsgc.c:3239
#13 0xb7d6163a in JS_GC (cx=0x9b0b368) at jsapi.c:2469
#14 0xb729b950 in nsXPConnect::Collect (this=0x98a5c70) at nsXPConnect.cpp:529
#15 0xb7a4d8fa in nsCycleCollector::Collect (this=0x98436b0, aTryCollections=1)
    at nsCycleCollector.cpp:2250
#16 0xb7a4da39 in nsCycleCollector_collect () at nsCycleCollector.cpp:2898
#17 0xb7648f42 in nsJSContext::CC () at nsJSEnvironment.cpp:3346
#18 0xb7649012 in nsJSContext::MaybeCC (aHigherProbability=1) at nsJSEnvironment.cpp:3397
#19 0xb76493c5 in nsUserActivityObserver::Observe (this=0x9b0abd8, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", aData=0x0) at nsJSEnvironment.cpp:291
#20 0xb7a1c9a0 in nsObserverList::NotifyObservers (this=0x9c9d4ac, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", someData=0x0) at nsObserverList.cpp:128
#21 0xb7a1cc6e in nsObserverService::NotifyObservers (this=0x9895fa0, aSubject=0x0, 
    aTopic=0xb7bb4be6 "user-interaction-active", someData=0x0) at nsObserverService.cpp:181
#22 0xb75747ff in nsEventStateManager::PreHandleEvent (this=0x148e5938, aPresContext=0x136dcac0, 
    aEvent=0xbfcbdf94, aTargetFrame=0x1473a868, aStatus=0xbfcbde4c, aView=0x12574c98)
    at nsEventStateManager.cpp:777
#23 0xb7401f5f in PresShell::HandleEventInternal (this=0x17bd30f8, aEvent=0xbfcbdf94, 
    aView=0x12574c98, aStatus=0xbfcbde4c) at nsPresShell.cpp:5911
#24 0xb7402674 in PresShell::HandlePositionedEvent (this=0x17bd30f8, aView=0x12574c98, 
    aTargetFrame=0x1473a868, aEvent=0xbfcbdf94, aEventStatus=0xbfcbde4c) at nsPresShell.cpp:5809
#25 0xb740285c in PresShell::HandleEvent (this=0x15653370, aView=0x16696e38, aEvent=0xbfcbdf94, 
    aEventStatus=0xbfcbde4c) at nsPresShell.cpp:5662
#26 0xb7642603 in nsViewManager::HandleEvent (this=0x12574c38, aView=0x16696e38, aPoint=
      {x = -1077158172, y = -1077157996}, aEvent=0xbfcbdf94, aCaptured=0) at nsViewManager.cpp:1382
#27 0xb7643ee0 in nsViewManager::DispatchEvent (this=0x12574c38, aEvent=0xbfcbdf94, 
    aStatus=0xbfcbdf30) at nsViewManager.cpp:1337
#28 0xb763ef7c in HandleEvent (aEvent=0xbfcbdf94) at nsView.cpp:168
#29 0xb7982630 in nsCommonWidget::DispatchEvent (this=0x18bd6408, aEvent=0xbfcbdf94, 
    aStatus=@0xbfcbe004) at nsCommonWidget.cpp:158
#30 0xb797d769 in nsWindow::OnMotionNotifyEvent (this=0x18bd6408, aWidget=0x13d0b8e8, 
    aEvent=0x9805720) at nsWindow.cpp:2026
#31 0xb797d8f1 in motion_notify_event_cb (widget=0x13d0b8e8, event=0x9805720) at nsWindow.cpp:4643
#32 0xb68bdef6 in _gtk_marshal_BOOLEAN__BOXED (closure=0x13bf3c50, return_value=0xbfcbe230, 
    n_param_values=2, param_values=0x16bf9800, invocation_hint=0xbfcbe21c, marshal_data=0xb797d8cc)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmarshalers.c:84
#33 0xb6d02c4b in IA__g_closure_invoke (closure=0x13bf3c50, return_value=0xbfcbe230, 
    n_param_values=2, param_values=0x16bf9800, invocation_hint=0xbfcbe21c)
    at /build/buildd/glib2.0-2.18.1/gobject/gclosure.c:767
#34 0xb6d19095 in signal_emit_unlocked_R (node=0x9810ea0, detail=0, instance=0x13d0b8e8, 
    emission_return=0xbfcbe368, instance_and_params=0x16bf9800)
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:3244
#35 0xb6d1a62b in IA__g_signal_emit_valist (instance=0x13d0b8e8, signal_id=48, detail=0, 
    var_args=0xbfcbe3c0 "��˿ W\200\t���\023�\223\235����\023�x\200\t")
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:2987
#36 0xb6d1ac26 in IA__g_signal_emit (instance=0x13d0b8e8, signal_id=48, detail=0)
    at /build/buildd/glib2.0-2.18.1/gobject/gsignal.c:3034
#37 0xb69d30ee in gtk_widget_event_internal (widget=0x13d0b8e8, event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkwidget.c:4745
#38 0xb68b6a0c in IA__gtk_propagate_event (widget=0x13d0b8e8, event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmain.c:2391
#39 0xb68b7db7 in IA__gtk_main_do_event (event=0x9805720)
    at /build/buildd/gtk+2.0-2.14.3/gtk/gtkmain.c:1596
#40 0xb673250a in gdk_event_dispatch (source=0x97ef450, callback=0, user_data=0x0)
    at /build/buildd/gtk+2.0-2.14.3/gdk/x11/gdkevents-x11.c:2365
#41 0xb6c756f8 in IA__g_main_context_dispatch (context=0x97ef498)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2142
#42 0xb6c78da3 in g_main_context_iterate (context=0x97ef498, block=0, dispatch=1, self=0x97a8cb0)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2776
#43 0xb6c78f61 in IA__g_main_context_iteration (context=0x97ef498, may_block=0)
    at /build/buildd/glib2.0-2.18.1/glib/gmain.c:2839
#44 0xb7980f7c in nsAppShell::ProcessNextNativeEvent (this=0x98c6708, mayWait=0)
    at nsAppShell.cpp:144
#45 0xb7995fe4 in nsBaseAppShell::DoProcessNextNativeEvent (this=0x98c6708, mayWait=0)
    at nsBaseAppShell.cpp:151
#46 0xb79961ed in nsBaseAppShell::OnProcessNextEvent (this=0x98c6708, thr=0x981d6b0, mayWait=1, 
    recursionDepth=0) at nsBaseAppShell.cpp:278
#47 0xb7a4250e in nsThread::ProcessNextEvent (this=0x981d6b0, mayWait=1, result=0xbfcbe644)
    at nsThread.cpp:497
#48 0xb7a12f88 in NS_ProcessNextEvent_P (thread=0x1e116820, mayWait=1) at nsThreadUtils.cpp:227
#49 0xb79962c4 in nsBaseAppShell::Run (this=0x98c6708) at nsBaseAppShell.cpp:170
#50 0xb782bab8 in nsAppStartup::Run (this=0x9909620) at nsAppStartup.cpp:181
#51 0xb7290508 in XRE_main (argc=2, argv=0xbfcc1da4, aAppData=0x97a8830) at nsAppRunner.cpp:3194
#52 0x080491ab in ?? ()
#53 0xb7dfe685 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#54 0x08048d11 in ?? ()

-- 
segfault in GCGraphBuilder::AddNode
https://bugs.launchpad.net/bugs/286366
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