Found with commit 422090:874dedd55599 layout/generic/nsGfxScrollFrame.cpp:2703:19: runtime error: signed integer overflow: 0 - -2147483648 cannot be represented in type 'int' #0 0x7fd5eaf5b8db in ClampAndAlignWithPixels(int, int, int, int, int, int, double, int) layout/generic/nsGfxScrollFrame.cpp:2703:19 #1 0x7fd5eaf2a81c in ClampAndAlignWithLayerPixels(nsPoint const&, nsRect const&, nsRect const&, nsPoint const&, int, mozilla::gfx::SizeTyped<mozilla::gfx::UnknownUnits, double> const&) layout/generic/nsGfxScrollFrame.cpp:2741:18 #2 0x7fd5eaf28488 in mozilla::ScrollFrameHelper::ScrollToImpl(nsPoint, nsRect const&, nsAtom*) layout/generic/nsGfxScrollFrame.cpp:2834:5 #3 0x7fd5eaf30e3b in mozilla::ScrollFrameHelper::ReflowFinished() layout/generic/nsGfxScrollFrame.cpp:5568:5 #4 0x7fd5eadcda5c in mozilla::PresShell::HandlePostedReflowCallbacks(bool) layout/base/PresShell.cpp:4081:22 #5 0x7fd5eadc86b9 in mozilla::PresShell::DidDoReflow(bool) layout/base/PresShell.cpp:8769:3 #6 0x7fd5eadc781f in mozilla::PresShell::ResizeReflowIgnoreOverride(int, int, int, int, nsIPresShell::ResizeReflowOptions) layout/base/PresShell.cpp:2043:7 #7 0x7fd5eab5668e in nsViewManager::DoSetWindowDimensions(int, int) view/nsViewManager.cpp:191:19 #8 0x7fd5eab567cd in nsViewManager::FlushDelayedResize(bool) view/nsViewManager.cpp:243:7 #9 0x7fd5eadce1a0 in mozilla::PresShell::DoFlushPendingNotifications(mozilla::ChangesToFlush) layout/base/PresShell.cpp:4334:20 #10 0x7fd5eada4854 in nsRefreshDriver::Tick(long, mozilla::TimeStamp) layout/base/nsRefreshDriver.cpp:1923:16 #11 0x7fd5eadaabe1 in mozilla::RefreshDriverTimer::TickRefreshDrivers(long, mozilla::TimeStamp, nsTArray<RefPtr<nsRefreshDriver> >&) layout/base/nsRefreshDriver.cpp:301:7 #12 0x7fd5eadaaac8 in mozilla::RefreshDriverTimer::Tick(long, mozilla::TimeStamp) layout/base/nsRefreshDriver.cpp:320:5 #13 0x7fd5eadace4b in mozilla::VsyncRefreshDriverTimer::RunRefreshDrivers(mozilla::TimeStamp) layout/base/nsRefreshDriver.cpp:760:5 #14 0x7fd5eadac4ad in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::TickRefreshDriver(mozilla::TimeStamp) layout/base/nsRefreshDriver.cpp:673:35 #15 0x7fd5eadac125 in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync(mozilla::TimeStamp) layout/base/nsRefreshDriver.cpp:574:9 #16 0x7fd5eb0d5aee in mozilla::layout::VsyncChild::RecvNotify(mozilla::TimeStamp const&) layout/ipc/VsyncChild.cpp:68:16 #17 0x7fd5e83f1e70 in mozilla::layout::PVsyncChild::OnMessageReceived(IPC::Message const&) objdir-ff-ubsan/ipc/ipdl/PVsyncChild.cpp:167:20 #18 0x7fd5e805d84c in mozilla::ipc::MessageChannel::DispatchAsyncMessage(IPC::Message const&) ipc/glue/MessageChannel.cpp:2134:25 #19 0x7fd5e805c85c in mozilla::ipc::MessageChannel::DispatchMessage(IPC::Message&&) ipc/glue/MessageChannel.cpp:2064:17 #20 0x7fd5e805d2b0 in mozilla::ipc::MessageChannel::MessageTask::Run() ipc/glue/MessageChannel.cpp:1943:15 #21 0x7fd5e785c472 in nsThread::ProcessNextEvent(bool, bool*) xpcom/threads/nsThread.cpp:1088:14 #22 0x7fd5e787af5e in NS_ProcessNextEvent(nsIThread*, bool) xpcom/threads/nsThreadUtils.cpp:519:10 #23 0x7fd5e806037f in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) ipc/glue/MessagePump.cpp:97:21 #24 0x7fd5e7fc9a89 in MessageLoop::Run() ipc/chromium/src/base/message_loop.cc:298:3 #25 0x7fd5eab97fff in nsBaseAppShell::Run() widget/nsBaseAppShell.cpp:157:27 #26 0x7fd5ec91a993 in XRE_RunAppShell() toolkit/xre/nsEmbedFunctions.cpp:896:22 #27 0x7fd5e8060a98 in mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) ipc/glue/MessagePump.cpp:269:9 #28 0x7fd5e7fc9a89 in MessageLoop::Run() ipc/chromium/src/base/message_loop.cc:298:3 #29 0x7fd5ec91a552 in XRE_InitChildProcess(int, char**, XREChildData const*) toolkit/xre/nsEmbedFunctions.cpp:722:34 #30 0x430a7a in content_process_main(mozilla::Bootstrap*, int, char**) browser/app/../../ipc/contentproc/plugin-container.cpp:50:30 #31 0x430b40 in main browser/app/nsBrowserApp.cpp:287:18 #32 0x7fd60a4361c0 in __libc_start_main /build/glibc-itYbWN/glibc-2.26/csu/../csu/libc-start.c:308 #33 0x4092e9 in _start (firefox+0x4092e9)