1429214 - Assertion failure: rectDebug.IsEqualEdges(nsRect(mIStart, mBStart, mISize, mBSize)), at /builds/worker/workspace/build/src/obj-firefox/dist/include/mozilla/WritingModes.h:1932

Status: NEW

(Core :: Layout: Text and Fonts, defect, P5)

Description

[Jason Kratzer [:jkratzer]]

Testcase found while fuzzing mozilla-central rev ca379fcca95b.

OS|Linux|0.0.0 Linux 4.4.0-104-generic #127-Ubuntu SMP Mon Dec 11 12:16:42 UTC 2017 x86_64
CPU|amd64|family 6 model 78 stepping 3|1
GPU|||
Crash|SIGSEGV|0x0|0
0|0|libxul.so|mozilla::LogicalRect::IntersectRect|hg:hg.mozilla.org/mozilla-central:layout/generic/WritingModes.h:ca379fcca95b|1932|0x18
0|1|libxul.so|mozilla::css::TextOverflow::ProcessLine|hg:hg.mozilla.org/mozilla-central:layout/generic/TextOverflow.cpp:ca379fcca95b|747|0x5
0|2|libxul.so|DisplayLine|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:ca379fcca95b|6655|0x1e
0|3|libxul.so|nsBlockFrame::BuildDisplayList|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:ca379fcca95b|6746|0x38
0|4|libxul.so|nsIFrame::BuildDisplayListForStackingContext|hg:hg.mozilla.org/mozilla-central:layout/generic/nsFrame.cpp:ca379fcca95b|2986|0x17
0|5|libxul.so|nsIFrame::BuildDisplayListForChild|hg:hg.mozilla.org/mozilla-central:layout/generic/nsFrame.cpp:ca379fcca95b|3701|0x19
0|6|libxul.so|nsCanvasFrame::BuildDisplayList|hg:hg.mozilla.org/mozilla-central:layout/generic/nsCanvasFrame.cpp:ca379fcca95b|605|0x1c
0|7|libxul.so|nsIFrame::BuildDisplayListForChild|hg:hg.mozilla.org/mozilla-central:layout/generic/nsFrame.cpp:ca379fcca95b|3767|0x17
0|8|libxul.so|mozilla::ScrollFrameHelper::BuildDisplayList|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:ca379fcca95b|3615|0x1a
0|9|libxul.so|nsIFrame::BuildDisplayListForChild|hg:hg.mozilla.org/mozilla-central:layout/generic/nsFrame.cpp:ca379fcca95b|3767|0x17
0|10|libxul.so|mozilla::ViewportFrame::BuildDisplayList|hg:hg.mozilla.org/mozilla-central:layout/generic/ViewportFrame.cpp:ca379fcca95b|66|0x11
0|11|libxul.so|nsIFrame::BuildDisplayListForStackingContext|hg:hg.mozilla.org/mozilla-central:layout/generic/nsFrame.cpp:ca379fcca95b|2986|0x17
0|12|libxul.so|nsLayoutUtils::PaintFrame|hg:hg.mozilla.org/mozilla-central:layout/base/nsLayoutUtils.cpp:ca379fcca95b|3832|0x18
0|13|libxul.so|mozilla::PresShell::Paint|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:ca379fcca95b|6486|0x17
0|14|libxul.so|nsViewManager::ProcessPendingUpdatesPaint|hg:hg.mozilla.org/mozilla-central:view/nsViewManager.cpp:ca379fcca95b|480|0x12
0|15|libxul.so|nsViewManager::ProcessPendingUpdatesForView|hg:hg.mozilla.org/mozilla-central:view/nsViewManager.cpp:ca379fcca95b|412|0xd
0|16|libxul.so|nsViewManager::ProcessPendingUpdates|hg:hg.mozilla.org/mozilla-central:view/nsViewManager.cpp:ca379fcca95b|1102|0x11
0|17|libxul.so|nsRefreshDriver::Tick|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:ca379fcca95b|2046|0x8
0|18|libxul.so|mozilla::RefreshDriverTimer::TickRefreshDrivers|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:ca379fcca95b|306|0xf
0|19|libxul.so|mozilla::RefreshDriverTimer::Tick|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:ca379fcca95b|328|0x12
0|20|libxul.so|mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::TickRefreshDriver|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:ca379fcca95b|769|0x5
0|21|libxul.so|mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:ca379fcca95b|583|0xc
0|22|libxul.so|mozilla::layout::VsyncChild::RecvNotify|hg:hg.mozilla.org/mozilla-central:layout/ipc/VsyncChild.cpp:ca379fcca95b|68|0x9
0|23|libxul.so|mozilla::layout::PVsyncChild::OnMessageReceived|s3:gecko-generated-sources:06086093ccb59dd5a99cf8c9f9fb7f4860fd8ddbfd516af5e5b3508be62029679421dcf2abdf6b1c945b6a054050bd403c9574aad49f857cb4a31d3f4cf56b9a/ipc/ipdl/PVsyncChild.cpp:|155|0xf
0|24|libxul.so|mozilla::ipc::MessageChannel::DispatchAsyncMessage|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessageChannel.cpp:ca379fcca95b|2110|0x6
0|25|libxul.so|mozilla::ipc::MessageChannel::DispatchMessage|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessageChannel.cpp:ca379fcca95b|2040|0xb
0|26|libxul.so|mozilla::ipc::MessageChannel::RunMessage|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessageChannel.cpp:ca379fcca95b|1886|0xb
0|27|libxul.so|mozilla::ipc::MessageChannel::MessageTask::Run|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessageChannel.cpp:ca379fcca95b|1919|0xc
0|28|libxul.so|nsThread::ProcessNextEvent|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThread.cpp:ca379fcca95b|1040|0x15
0|29|libxul.so|NS_ProcessNextEvent|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.cpp:ca379fcca95b|517|0x11
0|30|libxul.so|mozilla::ipc::MessagePump::Run|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:ca379fcca95b|97|0xa
0|31|libxul.so|MessageLoop::RunInternal|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ca379fcca95b|326|0x17
0|32|libxul.so|MessageLoop::Run|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ca379fcca95b|319|0x8
0|33|libxul.so|nsBaseAppShell::Run|hg:hg.mozilla.org/mozilla-central:widget/nsBaseAppShell.cpp:ca379fcca95b|157|0xd
0|34|libxul.so|XRE_RunAppShell|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:ca379fcca95b|875|0x11
0|35|libxul.so|mozilla::ipc::MessagePumpForChildProcess::Run|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:ca379fcca95b|269|0x5
0|36|libxul.so|MessageLoop::RunInternal|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ca379fcca95b|326|0x17
0|37|libxul.so|MessageLoop::Run|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:ca379fcca95b|319|0x8
0|38|libxul.so|XRE_InitChildProcess|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:ca379fcca95b|701|0x8
0|39|firefox|content_process_main|hg:hg.mozilla.org/mozilla-central:ipc/contentproc/plugin-container.cpp:ca379fcca95b|63|0x14
0|40|firefox|main|hg:hg.mozilla.org/mozilla-central:browser/app/nsBrowserApp.cpp:ca379fcca95b|280|0x11
0|41|libc-2.23.so||||0x20830
0|42|firefox|MOZ_ReportAssertionFailure|hg:hg.mozilla.org/mozilla-central:mfbt/Assertions.h:ca379fcca95b|165|0x5

Comment 1

[Jonathan Kew [:jfkthame]]

Is there a testcase that triggers this assertion?

Comment 2

[Jason Kratzer [:jkratzer]]

Attachment: trigger.html

Comment 3

[Jason Kratzer [:jkratzer]]

I just tried to verify the testcase against the latest m-c and can confirm that it no longer reproduces.  I've attached the testcase so that we might land the crashtest.