This bug was filed from the Socorro interface and is report bp-67be18df-9a7a-4808-94e9-3022e2140509. ============================================================= This in the top 20 in the list of crash reports for nightly 32a2. It's happening mostly on Win7, followed by Win8.1 and Win8. The first appearance of this on nightly 32a2 started on 5/9. There are no comments in the crash reports so far. More reports can be found here: https://crash-stats.mozilla.com/report/list?product=Firefox&signature=js%3A%3Agcstats%3A%3AStatistics%3A%3AformatMessage%28%29 0 mozjs.dll js::gcstats::Statistics::formatMessage() 1 mozjs.dll js::GCMarker::markBufferedGrayRoots(JS::Zone *) 2 mozjs.dll JSFunction::initBoundFunction(JSContext *,JS::Handle<JS::Value>,JS::Value const *,unsigned int) 3 mozjs.dll JSObject::setNewTypeUnknown(JSContext *,js::Class const *,JS::Handle<JSObject *>) 4 mozjs.dll JSObject::setNewTypeUnknown(JSContext *,js::Class const *,JS::Handle<JSObject *>) 5 xul.dll [thunk]:nsDocument::Release`adjustor{760}' () 6 mozjs.dll JS::ShrinkingGC(JSRuntime *,JS::gcreason::Reason) 7 xul.dll XPCVariant_GetInterfacesHelper(unsigned int *,nsID * * *) 8 xul.dll nsTArray_Impl<txXPCOMFunctionMapping,nsTArrayInfallibleAllocator>::AppendElements(unsigned int) 9 xul.dll mozilla::net::nsHttpAuthCache::AppDataClearObserver::Release() 10 xul.dll nsTArray_Impl<txXPCOMFunctionMapping,nsTArrayInfallibleAllocator>::AppendElements(unsigned int) 11 xul.dll nsUUIDGenerator::nsUUIDGenerator() 12 xul.dll nsTArray_Impl<txXPCOMFunctionMapping,nsTArrayInfallibleAllocator>::AppendElements(unsigned int) 13 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 14 mozglue.dll arena_bin_malloc_hard memory/mozjemalloc/jemalloc.c 15 KERNELBASE.dll GetVersionExA 16 nss3.dll MD_CURRENT_THREAD 17 nss3.dll PR_Lock 18 uxtheme.dll ClassicSystemParametersInfoA 19 xul.dll mozilla::probes::ProbeManager::~ProbeManager() 20 xul.dll nsWindow::Create(nsIWidget *,void *,nsIntRect const &,nsDeviceContext *,nsWidgetInitData *) 21 user32.dll SystemParametersInfoA 22 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 23 gkmedias.dll cairo_type2_charstrings_init 24 xul.dll nsWindow::Create(nsIWidget *,void *,nsIntRect const &,nsDeviceContext *,nsWidgetInitData *) 25 xul.dll strcpy 26 xul.dll strcpy 27 user32.dll RealGetQueueStatus 28 xul.dll nsUUIDGenerator::nsUUIDGenerator() 29 user32.dll RegisterClassExWOWW 30 xul.dll mozilla::probes::ProbeManager::~ProbeManager() 31 xul.dll nsWindow::Create(nsIWidget *,void *,nsIntRect const &,nsDeviceContext *,nsWidgetInitData *) 32 xul.dll strcpy 33 xul.dll strcpy 34 xul.dll nsWindow::Create(nsIWidget *,void *,nsIntRect const &,nsDeviceContext *,nsWidgetInitData *) 35 user32.dll RegisterClassExWOWW 36 kernel32.dll kernel32.dll@0x21d9e 37 user32.dll IsWindowVisible 38 xul.dll nsWindow::Create(nsIWidget *,void *,nsIntRect const &,nsDeviceContext *,nsWidgetInitData *) 39 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 40 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 41 xul.dll mozilla::probes::ProbeManager::~ProbeManager() 42 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 43 xul.dll nsComponentManagerImpl::AutoRegister(nsIFile *) 44 xul.dll CallWindowProcCrashProtected 45 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 46 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 47 user32.dll GetRealWindowOwner 48 user32.dll UserCallWinProcCheckWow 49 xul.dll nsComponentManagerImpl::AutoRegister(nsIFile *) 50 user32.dll DispatchClientMessage 51 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 52 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 53 user32.dll _fnDWORD 54 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 55 user32.dll UserCallWinProcCheckWow 56 ntdll.dll KiUserCallbackDispatcher 57 nss3.dll PR_IntervalToMilliseconds 58 user32.dll ZwUserDispatchMessage 59 xul.dll `anonymous namespace'::IsEmpty(base::Histogram const *) 60 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 61 ntdll.dll RtlSetHeapInformation 62 user32.dll ZwUserDispatchMessage 63 xul.dll nsComponentManagerImpl::AutoRegister(nsIFile *) 64 user32.dll TranslateMessage 65 xul.dll nsTextStore::OnSelectionChangeInternal() 66 xul.dll [thunk]:nsNativeThemeWin::Release`adjustor{208}' () 67 xul.dll nsViewSourceChannel::SetContentDispositionFilename(nsAString_internal const &) 68 xul.dll nsTArray_Impl<nsBaseAppShell::SyncSection,nsTArrayInfallibleAllocator>::AppendElements(unsigned int) 69 xul.dll nsTArray_Impl<nsBaseAppShell::SyncSection,nsTArrayInfallibleAllocator>::AppendElements(unsigned int) 70 xul.dll TypedAutoMarkingPtr<XPCNativeInterface>::`vector deleting destructor'(unsigned int) 71 xul.dll strcpy 72 xul.dll nsComponentManagerImpl::AutoRegister(nsIFile *) 73 nss3.dll MD_CURRENT_THREAD 74 nss3.dll PR_Lock 75 xul.dll strcpy 76 xul.dll mozilla::CountingAllocatorBase<OggReporter>::CountingMalloc(unsigned __int64) 77 xul.dll mozilla::ipc::MessageLink::`scalar deleting destructor'(unsigned int) 78 xul.dll strcpy 79 xul.dll strcpy 80 xul.dll std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >::find_last_of(wchar_t const *,unsigned __int64,unsigned __int64) 81 xul.dll std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >::find_last_of(wchar_t const *,unsigned __int64,unsigned __int64) 82 xul.dll nsTArray_Impl<nsRefPtr<mozilla::SubBufferDecoder>,nsTArrayInfallibleAllocator>::AppendElements<nsRefPtr<mozilla::SubBufferDecoder> >(nsRefPtr<mozilla::SubBufferDecoder> const *,unsigned int) 83 xul.dll strcpy 84 xul.dll nsComponentManagerImpl::AutoRegister(nsIFile *) 85 xul.dll RunnableFunction<void (*)(mozilla::layers::CompositorParent *,mozilla::layers::CompositorChild *),Tuple2<nsRefPtr<mozilla::layers::CompositorParent>,nsRefPtr<mozilla::layers::CompositorChild> > >::`scalar deleting destructor'(unsigned int) 86 xul.dll NS_NewRunnableMethod<nsUpdateProcessor *,void ( nsUpdateProcessor::*)(void)>(nsUpdateProcessor *,void ( nsUpdateProcessor::*)(void)) 87 xul.dll safe_browsing::ClientDownloadReport_UserInformation::Clear() 88 xul.dll [thunk]:nsNSSDialogs::QueryInterface`adjustor{56}' (nsID const &,void * *) 89 xul.dll strcpy 110 xul.dll base::SysUTF8ToWide(StringPiece const &) 111 xul.dll `anonymous namespace'::IsEmpty(base::Histogram const *) 112 xul.dll std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t> >::find_last_of(wchar_t const *,unsigned __int64,unsigned __int64) 113 xul.dll base::SysUTF8ToWide(StringPiece const &) 114 xul.dll `anonymous namespace'::IsEmpty(base::Histogram const *) 115 firefox.exe NS_internal_main(int,char * *) browser/app/nsBrowserApp.cpp 116 firefox.exe wmain toolkit/xre/nsWindowsWMain.cpp 117 firefox.exe __tmainCRTStartup f:/dd/vctools/crt_bld/self_64_amd64/crt/src/crtexe.c:552 118 kernel32.dll kernel32.dll@0x159ed 119 ntdll.dll RtlUserThreadStart

There was a symbol problem last week, this is actually js::GCMarker::processMarkStackTop (there are so many bugs on file for that signature that I'm not sure which one to dupe it against)

Bug 719114 is the open one that look like the generic thing.