This bug was filed from the Socorro interface and is report bp-470ea5d2-f0b4-4737-84dd-3e94a0170424. ============================================================= Crashing Thread (25) Frame Module Signature Source 0 xul.dll mozilla::layers::CrossProcessSemaphoreReadLock::CrossProcessSemaphoreReadLock(void*) gfx/layers/client/TextureClient.cpp:1455 1 xul.dll mozilla::MakeAndAddRef<mozilla::layers::CrossProcessSemaphoreReadLock, void* const&>(void* const&) obj-firefox/dist/include/mozilla/RefPtr.h:645 2 xul.dll mozilla::layers::TextureReadLock::Deserialize(mozilla::layers::ReadLockDescriptor const&, mozilla::layers::ISurfaceAllocator*) gfx/layers/client/TextureClient.cpp:1510 3 xul.dll mozilla::layers::CompositableParentManager::AddReadLocks(nsTArray<mozilla::layers::ReadLockInit>&&) gfx/layers/ipc/CompositableTransactionParent.cpp:294 4 xul.dll mozilla::layers::LayerTransactionParent::RecvInitReadLocks(nsTArray<mozilla::layers::ReadLockInit>&&) gfx/layers/ipc/LayerTransactionParent.cpp:138 5 xul.dll mozilla::layers::PLayerTransactionParent::OnMessageReceived(IPC::Message const&) obj-firefox/ipc/ipdl/PLayerTransactionParent.cpp:103 6 xul.dll mozilla::layers::PCompositorBridgeParent::OnMessageReceived(IPC::Message const&) obj-firefox/ipc/ipdl/PCompositorBridgeParent.cpp:561 7 xul.dll mozilla::ipc::MessageChannel::DispatchAsyncMessage(IPC::Message const&) ipc/glue/MessageChannel.cpp:1812 8 xul.dll mozilla::ipc::MessageChannel::DispatchMessageW(IPC::Message&&) ipc/glue/MessageChannel.cpp:1747 9 xul.dll mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::MessageChannel::MessageTask&) ipc/glue/MessageChannel.cpp:1620 10 xul.dll mozilla::ipc::MessageChannel::MessageTask::Run() ipc/glue/MessageChannel.cpp:1653 11 xul.dll MessageLoop::RunTask(already_AddRefed<mozilla::Runnable>) ipc/chromium/src/base/message_loop.cc:358 12 xul.dll MessageLoop::DeferOrRunPendingTask(MessageLoop::PendingTask&&) ipc/chromium/src/base/message_loop.cc:366 13 xul.dll MessageLoop::DoWork() ipc/chromium/src/base/message_loop.cc:441 14 xul.dll base::MessagePumpForUI::DoRunLoop() ipc/chromium/src/base/message_pump_win.cc:212 15 xul.dll base::MessagePumpWin::RunWithDispatcher(base::MessagePump::Delegate*, base::MessagePumpWin::Dispatcher*) ipc/chromium/src/base/message_pump_win.cc:56 16 xul.dll base::MessagePumpWin::Run(base::MessagePump::Delegate*) ipc/chromium/src/base/message_pump_win.h:80 17 xul.dll MessageLoop::RunHandler() ipc/chromium/src/base/message_loop.cc:231 18 xul.dll MessageLoop::Run() ipc/chromium/src/base/message_loop.cc:211 19 xul.dll base::Thread::ThreadMain() ipc/chromium/src/base/thread.cc:179 20 xul.dll `anonymous namespace'::ThreadFunc ipc/chromium/src/base/platform_thread_win.cc:28 21 kernel32.dll BaseThreadInitThunk 22 ntdll.dll __RtlUserThreadStart 23 ntdll.dll _RtlUserThreadStart this crash signature is new in firefox 54 - so far it's rather low-volume though.

Hi Peter, Can you help shed some light here?

[Tracking Requested - why for this release]: This is a fairly low volume crash, but the last week it has 77 crashes in 13 installations, so fairly important for the people whom it affects.

Track 54+ so that we won't miss this crash.

Kevin, please help to look at this issue.

(In reply to Nathan Froyd [:froydnj] from comment #2) > [Tracking Requested - why for this release]: This is a fairly low volume > crash, but the last week it has 77 crashes in 13 installations, so fairly > important for the people whom it affects. In my guess, the low volume starting from the last weed should be the patch of bug 1341496 landed into beta. Please see [1] for details. [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1341496#c21

(In reply to Vincent Liu[:vliu] from comment #5) > (In reply to Nathan Froyd [:froydnj] from comment #2) > > [Tracking Requested - why for this release]: This is a fairly low volume > > crash, but the last week it has 77 crashes in 13 installations, so fairly > > important for the people whom it affects. > > In my guess, the low volume starting from the last weed should be the patch > of bug 1341496 landed into beta. > Please see [1] for details. > > > [1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1341496#c21 Sorry about not clearly for my statements. From tracked into the code, I found that this issue should be fixed after the patches of bug 1341496 uplift to beta(on 4/26). The crash rate dropped starting from Apr. 26 also indicate that the patches works. I will set it as dup of 1341496 to resolve. Reopen it if anyone doesn't agree with it.

Clear ni based on comment 6.