Pixel_OffscreenCanvas2DResizeOnWorker is crashing in the renderer.

This looks like a mis-use of the viz client API by the OffscreenCanvas code?

	Operating system: Linux
  	                  0.0.0 Linux 3.13.0-105-generic #152-Ubuntu SMP Fri Dec 2 15:37:11 UTC 2016 x86_64
  	CPU: amd64
  	     family 6 model 94 stepping 3
  	     1 CPU
  	
  	GPU: UNKNOWN
  	
  	Crash reason:  SIGSEGV
  	Crash address: 0x0
  	Process uptime: not available
  	
  	Thread 15 (crashed)
  	 0  libc-2.19.so + 0x3a177
  	    rax = 0x0000000000000006   rdx = 0x0000000000000006
  	    rcx = 0xffffffffffffffff   rbx = 0x0000000000000000
  	    rsi = 0x0000000000000010   rdi = 0x0000000000000001
  	    rbp = 0x00007f964adf6810   rsp = 0x00007f964adf66e0
  	     r8 = 0x0000000000000000    r9 = 0x00007f964adf6630
  	    r10 = 0x0000000000000008   r11 = 0x0000000000000202
  	    r12 = 0x0000000000000000   r13 = 0x0000000000000000
  	    r14 = 0x00007f964adff9c0   r15 = 0x00007f964adff700
  	    rip = 0x00007f965dc80177
  	    Found by: given as instruction pointer in context
  	 1  libbase.so!base::debug::BreakDebugger() + 0x18
  	    rbp = 0x00007f964adf6820   rsp = 0x00007f964adf6820
  	    rip = 0x00007f967e7b74a8
  	    Found by: previous frame's frame pointer
  	 2  chrome!logging::(anonymous namespace)::SilentRuntimeAssertHandler(char const*, int, base::BasicStringPiece<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >, base::BasicStringPiece<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > >) + 0x24
  	    rbp = 0x00007f964adf6860   rsp = 0x00007f964adf6830
  	    rip = 0x00007f9682e36614
  	    Found by: call frame info
  	 3  chrome!Invoke<void (*const &)(const char *, int, base::BasicStringPiece<std::string>, base::BasicStringPiece<std::string>), const char *, int, base::BasicStringPiece<std::string>, base::BasicStringPiece<std::string> > [bind_internal.h : 402 + 0x20]
  	    rbp = 0x00007f964adf68f0   rsp = 0x00007f964adf6870
  	    rip = 0x00007f9682e38b61
  	    Found by: call frame info
  	 4  chrome!MakeItSo<void (*const &)(const char *, int, base::BasicStringPiece<std::string>, base::BasicStringPiece<std::string>), const char *, int, base::BasicStringPiece<std::string>, base::BasicStringPiece<std::string> > [bind_internal.h : 547 + 0x5]
  	    rbp = 0x00007f964adf6950   rsp = 0x00007f964adf6900
  	    rip = 0x00007f9682e38aad
  	    Found by: call frame info
  	 5  chrome!RunImpl<void (*const &)(const char *, int, base::BasicStringPiece<std::string>, base::BasicStringPiece<std::string>), const std::__1::tuple<> &> [bind_internal.h : 621 + 0x5]
  	    rbp = 0x00007f964adf69c0   rsp = 0x00007f964adf6960
  	    rip = 0x00007f9682e38a41
  	    Found by: call frame info
  	 6  chrome!Run [bind_internal.h : 603 + 0x10]
  	    rbp = 0x00007f964adf6a30   rsp = 0x00007f964adf69d0
  	    rip = 0x00007f9682e389d3
  	    Found by: call frame info
  	 7  libbase.so!Run [callback.h : 125 + 0x9]
  	    rbp = 0x00007f964adf6ab0   rsp = 0x00007f964adf6a40
  	    rip = 0x00007f967e555bac
  	    Found by: call frame info
  	 8  libbase.so!~LogMessage [logging.cc : 835 + 0x3e]
  	    rbp = 0x00007f964adf7720   rsp = 0x00007f964adf6ac0
  	    rip = 0x00007f967e553f7d
  	    Found by: call frame info
  	 9  libviz_common.so!viz::RenderPass::SetNew(unsigned long, gfx::Rect const&, gfx::Rect const&, gfx::Transform const&) + 0x24e
  	    rbp = 0x00007f964adf7c90   rsp = 0x00007f964adf7730
  	    rip = 0x00007f9675024e7e
  	    Found by: call frame info
  	10  libblink_platform.so!DispatchFrame [offscreen_canvas_frame_dispatcher.cc : 165 + 0x21]
  	    rbp = 0x00007f964adf8940   rsp = 0x00007f964adf7ca0
  	    rip = 0x00007f9665bce9b9
  	    Found by: call frame info
  	11  libblink_core.so!PushFrame [offscreen_canvas.cc : 303 + 0x10]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf89a0
  	    rsp = 0x00007f964adf8950   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9668cfb81e
  	    Found by: call frame info
  	12  libblink_modules.so!blink::OffscreenCanvasRenderingContext2D::PushFrame() + 0x7f
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf89e0
  	    rsp = 0x00007f964adf89b0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f96644f7b2f
  	    Found by: call frame info
  	13  libblink_core.so!blink::WorkerAnimationFrameProvider::BeginFrame() + 0xbc
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf8a40
  	    rsp = 0x00007f964adf89f0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f966908d08c
  	    Found by: call frame info
  	14  libblink_platform.so!blink::BeginFrameProvider::OnBeginFrame(viz::BeginFrameArgs const&) + 0x46
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf8a90
  	    rsp = 0x00007f964adf8a50   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665991e56
  	    Found by: call frame info
  	15  libblink_platform.so!Accept [compositor_frame_sink.mojom-blink.cc : 1037 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf9570
  	    rsp = 0x00007f964adf8aa0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f96665770e6
  	    Found by: call frame info
  	16  libblink_platform.so!viz::mojom::blink::CompositorFrameSinkClientStub<mojo::RawPtrImplRefTraits<viz::mojom::blink::CompositorFrameSinkClient> >::Accept(mojo::Message*) + 0x53
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adf95a0
  	    rsp = 0x00007f964adf9580   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665992aa3
  	    Found by: call frame info
  	17  libbindings.so!HandleValidatedMessage [interface_endpoint_client.cc : 419 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfa190
  	    rsp = 0x00007f964adf95b0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8b0c65
  	    Found by: call frame info
  	18  libbindings.so!mojo::InterfaceEndpointClient::HandleIncomingMessageThunk::Accept(mojo::Message*) + 0x21
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfa1b0
  	    rsp = 0x00007f964adfa1a0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8af6b1
  	    Found by: call frame info
  	19  libbindings.so!Accept [filter_chain.cc : 40 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfa410
  	    rsp = 0x00007f964adfa1c0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8adb32
  	    Found by: call frame info
  	20  libbindings.so!mojo::InterfaceEndpointClient::HandleIncomingMessage(mojo::Message*) + 0xe5
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfa580
  	    rsp = 0x00007f964adfa420   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8b3895
  	    Found by: call frame info
  	21  libbindings.so!mojo::internal::MultiplexRouter::ProcessIncomingMessage(mojo::internal::MultiplexRouter::MessageWrapper*, mojo::internal::MultiplexRouter::ClientCallBehavior, base::SequencedTaskRunner*) + 0x61b
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adface0
  	    rsp = 0x00007f964adfa590   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8bfddb
  	    Found by: call frame info
  	22  libbindings.so!Accept [multiplex_router.cc : 589 + 0x1c]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfb1c0
  	    rsp = 0x00007f964adfacf0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8bf325
  	    Found by: call frame info
  	23  libbindings.so!Accept [filter_chain.cc : 40 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfb420
  	    rsp = 0x00007f964adfb1d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8adb32
  	    Found by: call frame info
  	24  libbindings.so!mojo::Connector::ReadSingleMessage(unsigned int*) + 0x3af
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfb7f0
  	    rsp = 0x00007f964adfb430   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c89f9ef
  	    Found by: call frame info
  	25  libbindings.so!ReadAllAvailableMessages [connector.cc : 472 + 0x13]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbc00
  	    rsp = 0x00007f964adfb800   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a0a3a
  	    Found by: call frame info
  	26  libbindings.so!mojo::Connector::OnHandleReadyInternal(unsigned int) + 0x105
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbd60
  	    rsp = 0x00007f964adfbc10   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a0805
  	    Found by: call frame info
  	27  libbindings.so!mojo::Connector::OnWatcherHandleReady(unsigned int) + 0x1b
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbd80
  	    rsp = 0x00007f964adfbd70   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a06eb
  	    Found by: call frame info
  	28  libbindings.so!Invoke<void (mojo::Connector::*)(unsigned int), mojo::Connector *, unsigned int> [bind_internal.h : 447 + 0x6]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbde0
  	    rsp = 0x00007f964adfbd90   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a42cf
  	    Found by: call frame info
  	29  libbindings.so!MakeItSo<void (mojo::Connector::*const &)(unsigned int), mojo::Connector *, unsigned int> [bind_internal.h : 547 + 0x20]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbe40
  	    rsp = 0x00007f964adfbdf0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a422f
  	    Found by: call frame info
  	30  libbindings.so!RunImpl<void (mojo::Connector::*const &)(unsigned int), const std::__1::tuple<base::internal::UnretainedWrapper<mojo::Connector> > &, 0> [bind_internal.h : 621 + 0xd]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbeb0
  	    rsp = 0x00007f964adfbe50   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a41c5
  	    Found by: call frame info
  	31  libbindings.so!Run [bind_internal.h : 603 + 0x8]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbef0
  	    rsp = 0x00007f964adfbec0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a40fb
  	    Found by: call frame info
  	32  libbindings.so!Run [callback.h : 125 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbf30
  	    rsp = 0x00007f964adfbf00   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c89b0ae
  	    Found by: call frame info
  	33  libbindings.so!mojo::SimpleWatcher::DiscardReadyState(base::RepeatingCallback<void (unsigned int)> const&, unsigned int, mojo::HandleSignalsState const&) + 0x1f
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbf60
  	    rsp = 0x00007f964adfbf40   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a333f
  	    Found by: call frame info
  	34  libbindings.so!Invoke<void (*const &)(const base::RepeatingCallback<void (unsigned int)> &, unsigned int, const mojo::HandleSignalsState &), const base::RepeatingCallback<void (unsigned int)> &, unsigned int, const mojo::HandleSignalsState &> [bind_internal.h : 402 + 0x2]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfbfb0
  	    rsp = 0x00007f964adfbf70   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a35bf
  	    Found by: call frame info
  	35  libbindings.so!MakeItSo<void (*const &)(const base::RepeatingCallback<void (unsigned int)> &, unsigned int, const mojo::HandleSignalsState &), const base::RepeatingCallback<void (unsigned int)> &, unsigned int, const mojo::HandleSignalsState &> [bind_internal.h : 547 + 0x5]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc000
  	    rsp = 0x00007f964adfbfc0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a355d
  	    Found by: call frame info
  	36  libbindings.so!RunImpl<void (*const &)(const base::RepeatingCallback<void (unsigned int)> &, unsigned int, const mojo::HandleSignalsState &), const std::__1::tuple<base::RepeatingCallback<void (unsigned int)> > &, 0> [bind_internal.h : 621 + 0xc]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc070
  	    rsp = 0x00007f964adfc010   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a3500
  	    Found by: call frame info
  	37  libbindings.so!Run [bind_internal.h : 603 + 0x13]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc0c0
  	    rsp = 0x00007f964adfc080   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8a3436
  	    Found by: call frame info
  	38  libmojo_public_system_cpp.so!Run [callback.h : 125 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc110
  	    rsp = 0x00007f964adfc0d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c83475e
  	    Found by: call frame info
  	39  libmojo_public_system_cpp.so!mojo::SimpleWatcher::OnHandleReady(int, unsigned int, mojo::HandleSignalsState const&) + 0x1b9
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc2c0
  	    rsp = 0x00007f964adfc120   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c8340a9
  	    Found by: call frame info
  	40  libmojo_public_system_cpp.so!Invoke<void (mojo::SimpleWatcher::*)(int, unsigned int, const mojo::HandleSignalsState &), const base::WeakPtr<mojo::SimpleWatcher> &, const int &, const unsigned int &, const mojo::HandleSignalsState &> [bind_internal.h : 447 + 0x6]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc340
  	    rsp = 0x00007f964adfc2d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c834f53
  	    Found by: call frame info
  	41  libmojo_public_system_cpp.so!MakeItSo<void (mojo::SimpleWatcher::*const &)(int, unsigned int, const mojo::HandleSignalsState &), const base::WeakPtr<mojo::SimpleWatcher> &, const int &, const unsigned int &, const mojo::HandleSignalsState &> [bind_internal.h : 567 + 0x20]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc3c0
  	    rsp = 0x00007f964adfc350   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c834e95
  	    Found by: call frame info
  	42  libmojo_public_system_cpp.so!RunImpl<void (mojo::SimpleWatcher::*const &)(int, unsigned int, const mojo::HandleSignalsState &), const std::__1::tuple<base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState> &, 0, 1, 2, 3> [bind_internal.h : 621 + 0x24]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc470
  	    rsp = 0x00007f964adfc3d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c834df2
  	    Found by: call frame info
  	43  libmojo_public_system_cpp.so!base::internal::Invoker<base::internal::BindState<void (mojo::SimpleWatcher::*)(int, unsigned int, mojo::HandleSignalsState const&), base::WeakPtr<mojo::SimpleWatcher>, int, unsigned int, mojo::HandleSignalsState>, void ()>::Run(base::internal::BindStateBase*) + 0x2c
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc4a0
  	    rsp = 0x00007f964adfc480   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967c834c6c
  	    Found by: call frame info
  	44  libbase.so!Run [callback.h : 96 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc4e0
  	    rsp = 0x00007f964adfc4b0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e4901fe
  	    Found by: call frame info
  	45  libbase.so!RunTask [task_annotator.cc : 101 + 0x5]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfc6c0
  	    rsp = 0x00007f964adfc4f0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e4e2af2
  	    Found by: call frame info
  	46  libblink_platform.so!blink::scheduler::internal::ThreadControllerImpl::DoWork(blink::scheduler::internal::SequencedTaskSource::WorkType) + 0x44d
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfccd0
  	    rsp = 0x00007f964adfc6d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665e6200d
  	    Found by: call frame info
  	47  libblink_platform.so!Invoke<void (blink::scheduler::WorkerThreadScheduler::*)(blink::FrameScheduler::ThrottlingState), base::WeakPtr<blink::scheduler::WorkerThreadScheduler>, blink::FrameScheduler::ThrottlingState> [bind_internal.h : 447 + 0x6]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfcd30
  	    rsp = 0x00007f964adfcce0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665e64dd1
  	    Found by: call frame info
  	48  libblink_platform.so!MakeItSo<void (blink::scheduler::WorkerThreadScheduler::*)(blink::FrameScheduler::ThrottlingState), base::WeakPtr<blink::scheduler::WorkerThreadScheduler>, blink::FrameScheduler::ThrottlingState> [bind_internal.h : 567 + 0x20]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfcd90
  	    rsp = 0x00007f964adfcd40   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665e64d35
  	    Found by: call frame info
  	49  libblink_platform.so!RunImpl<void (blink::scheduler::WorkerThreadScheduler::*)(blink::FrameScheduler::ThrottlingState), std::__1::tuple<base::WeakPtr<blink::scheduler::WorkerThreadScheduler>, blink::FrameScheduler::ThrottlingState>, 0, 1> [bind_internal.h : 621 + 0x10]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfce00
  	    rsp = 0x00007f964adfcda0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665e64cad
  	    Found by: call frame info
  	50  libblink_platform.so!base::internal::Invoker<base::internal::BindState<void (blink::scheduler::internal::ThreadControllerImpl::*)(blink::scheduler::internal::SequencedTaskSource::WorkType), base::WeakPtr<blink::scheduler::internal::ThreadControllerImpl>, blink::scheduler::internal::SequencedTaskSource::WorkType>, void ()>::Run(base::internal::BindStateBase*) + 0x2c
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfce30
  	    rsp = 0x00007f964adfce10   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f9665e64bbc
  	    Found by: call frame info
  	51  libbase.so!Run [callback.h : 96 + 0x9]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfce70
  	    rsp = 0x00007f964adfce40   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e4901fe
  	    Found by: call frame info
  	52  libbase.so!RunTask [task_annotator.cc : 101 + 0x5]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd050
  	    rsp = 0x00007f964adfce80   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e4e2af2
  	    Found by: call frame info
  	53  libbase.so!base::internal::IncomingTaskQueue::RunTask(base::PendingTask*) + 0xe9
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd1c0
  	    rsp = 0x00007f964adfd060   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e5727e9
  	    Found by: call frame info
  	54  libbase.so!base::MessageLoop::RunTask(base::PendingTask*) + 0x367
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd480
  	    rsp = 0x00007f964adfd1d0   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e57b8d7
  	    Found by: call frame info
  	55  libbase.so!DeferOrRunPendingTask [message_loop.cc : 329 + 0x13]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd540
  	    rsp = 0x00007f964adfd490   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e57bb48
  	    Found by: call frame info
  	56  libbase.so!DoWork [message_loop.cc : 373 + 0x13]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd700
  	    rsp = 0x00007f964adfd550   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e57be79
  	    Found by: call frame info
  	57  libbase.so!base::MessagePumpDefault::Run(base::MessagePump::Delegate*) + 0x47
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfd750
  	    rsp = 0x00007f964adfd710   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e57f4a7
  	    Found by: call frame info
  	58  libbase.so!Run [message_loop.cc : 271 + 0xc]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfda10
  	    rsp = 0x00007f964adfd760   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e57b0cb
  	    Found by: call frame info
  	59  libbase.so!Run [run_loop.cc : 131 + 0x20]
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfde20
  	    rsp = 0x00007f964adfda20   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e624a3d
  	    Found by: call frame info
  	60  libbase.so!base::Thread::Run(base::RunLoop*) + 0x178
  	    rbx = 0x0000000000000000   rbp = 0x00007f964adfe0d0
  	    rsp = 0x00007f964adfde30   r14 = 0x00007f964adff9c0
  	    rip = 0x00007f967e6d6ad8
  	    Found by: call frame info
  	61  libbase.so!base::debug::ScopedLockAcquireActivity::ScopedLockAcquireActivity(base::internal::LockImpl const*) + 0x2d
  	    rbp = 0x00007f964adfe0d0   rsp = 0x00007f964adfde90
  	    rip = 0x00007f967e7e0c8d
  	    Found by: stack scanning
  	62  libbase.so!base::debug::ScopedTaskRunActivity::~ScopedTaskRunActivity() + 0x15
  	    rbp = 0x00007f964adfe0d0   rsp = 0x00007f964adfdea0
  	    rip = 0x00007f967e4e2f85
  	    Found by: stack scanning
  	63  libbase.so!base::internal::LockImpl::Unlock() + 0x60
  	    rbp = 0x00007f964adfe0d0   rsp = 0x00007f964adfdef0
  	    rip = 0x00007f967e48ba60
  	    Found by: stack scanning
  	64  libbase.so!base::internal::LockImpl::Unlock() + 0x60
  	    rbp = 0x00007f964adfe0d0   rsp = 0x00007f964adfdf30
  	    rip = 0x00007f967e48ba60
  	    Found by: stack scanning
  	65  libbase.so!SignalAll [list : 1020 + 0x8]
  	    rbp = 0x00007f964adfe0d0   rsp = 0x00007f964adfdf80
  	    rip = 0x00007f967e7e103c
  	    Found by: stack scanning