1652995 - Assertion failure: applyState.mGaps.mHandled == applyState.mGaps.mCount (Unprocessed justification gaps), at /builds/worker/checkouts/gecko/layout/generic/nsLineLayout.cpp:3129

Status: NEW

(Core :: Layout, defect)

Description

[Jason Kratzer [:jkratzer]]

Attachment: testcase.html

Testcase found while fuzzing mozilla-central rev 2aa3b889d603 (built with --enable-debug --enable-fuzzing).

Assertion failure: applyState.mGaps.mHandled == applyState.mGaps.mCount (Unprocessed justification gaps), at /builds/worker/checkouts/gecko/layout/generic/nsLineLayout.cpp:3129

rax = 0x00007f00964263c8   rdx = 0x0000000000000000
rcx = 0x000055644dabaa58   rbx = 0x000055644e930ef0
rsi = 0x00007f00a74068b0   rdi = 0x00007f00a7405680
rbp = 0x00007ffd26fe3750   rsp = 0x00007ffd26fe36d0
r8 = 0x00007f00a74068b0    r9 = 0x00007f00a856c780
r10 = 0x0000000000000002   r11 = 0x0000000000000000
r12 = 0x000055644e95b070   r13 = 0x00007ffd26fe3a48
r14 = 0x0000000000000564   r15 = 0x00007ffd26fe3700
rip = 0x00007f0090d1cc60
OS|Linux|0.0.0 Linux 5.3.0-51-generic #44~18.04.2-Ubuntu SMP Thu Apr 23 14:27:18 UTC 2020 x86_64
CPU|amd64|family 6 model 94 stepping 3|8
GPU|||
Crash|SIGSEGV|0x0|0
0|0|libxul.so|nsLineLayout::TextAlignLine(nsLineBox*, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsLineLayout.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|3128|0x0
0|1|libxul.so|nsBlockFrame::PlaceLine(mozilla::BlockReflowInput&, nsLineLayout&, nsLineList_iterator, nsFloatManager::SavedState*, nsFlowAreaRect&, int&, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|4890|0x17
0|2|libxul.so|nsBlockFrame::DoReflowInlineFrames(mozilla::BlockReflowInput&, nsLineLayout&, nsLineList_iterator, nsFlowAreaRect&, int&, nsFloatManager::SavedState*, bool*, LineReflowStatus*, bool)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|4383|0x34
0|3|libxul.so|nsBlockFrame::ReflowInlineFrames(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|4141|0x51
0|4|libxul.so|nsBlockFrame::ReflowLine(mozilla::BlockReflowInput&, nsLineList_iterator, bool*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|3125|0x15
0|5|libxul.so|nsBlockFrame::ReflowDirtyLines(mozilla::BlockReflowInput&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|2660|0x24
0|6|libxul.so|nsBlockFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsBlockFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1377|0xb
0|7|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1075|0x1a
0|8|libxul.so|nsCanvasFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsCanvasFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|749|0x22
0|9|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, mozilla::WritingMode const&, mozilla::LogicalPoint const&, nsSize const&, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1075|0x1a
0|10|libxul.so|nsHTMLScrollFrame::ReflowScrolledFrame(mozilla::ScrollReflowInput*, bool, bool, mozilla::ReflowOutput*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|691|0x3a
0|11|libxul.so|nsHTMLScrollFrame::ReflowContents(mozilla::ScrollReflowInput*, mozilla::ReflowOutput const&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|805|0x15
0|12|libxul.so|nsHTMLScrollFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsGfxScrollFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1200|0x15
0|13|libxul.so|nsContainerFrame::ReflowChild(nsIFrame*, nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, int, int, nsIFrame::ReflowChildFlags, nsReflowStatus&, nsOverflowContinuationTracker*)|hg:hg.mozilla.org/mozilla-central:layout/generic/nsContainerFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1115|0x18
0|14|libxul.so|mozilla::ViewportFrame::Reflow(nsPresContext*, mozilla::ReflowOutput&, mozilla::ReflowInput const&, nsReflowStatus&)|hg:hg.mozilla.org/mozilla-central:layout/generic/ViewportFrame.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|297|0x2b
0|15|libxul.so|mozilla::PresShell::DoReflow(nsIFrame*, bool, mozilla::OverflowChangedTracker*)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|9608|0x1c
0|16|libxul.so|mozilla::PresShell::ProcessReflowCommands(bool)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|9781|0x12
0|17|libxul.so|mozilla::PresShell::DoFlushPendingNotifications(mozilla::ChangesToFlush)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|4240|0x12
0|18|libxul.so|nsRefreshDriver::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp)|hg:hg.mozilla.org/mozilla-central:layout/base/PresShell.h:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1443|0xb
0|19|libxul.so|mozilla::RefreshDriverTimer::TickRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsTArray<RefPtr<nsRefreshDriver> >&)|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|373|0xb
0|20|libxul.so|mozilla::RefreshDriverTimer::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp)|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|367|0x12
0|21|libxul.so|mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::TickRefreshDriver(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp)|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|737|0x17
0|22|libxul.so|mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyParentProcessVsync()|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|639|0x10
0|23|libxul.so|mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::ParentProcessVsyncNotifier::Run()|hg:hg.mozilla.org/mozilla-central:layout/base/nsRefreshDriver.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|538|0x14
0|24|libxul.so|mozilla::RunnableTask::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|209|0x11
0|25|libxul.so|mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|459|0xa
0|26|libxul.so|mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|337|0x5
0|27|libxul.so|mozilla::TaskController::ProcessPendingMTTask()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/TaskController.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|152|0x8
0|28|libxul.so|mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_4>::Run()|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.h:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|577|0xd
0|29|libxul.so|nsThread::ProcessNextEvent(bool, bool*)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThread.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|1234|0xe
0|30|libxul.so|NS_ProcessNextEvent(nsIThread*, bool)|hg:hg.mozilla.org/mozilla-central:xpcom/threads/nsThreadUtils.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|513|0xc
0|31|libxul.so|mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|87|0x7
0|32|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|334|0x17
0|33|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|309|0x8
0|34|libxul.so|nsBaseAppShell::Run()|hg:hg.mozilla.org/mozilla-central:widget/nsBaseAppShell.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|137|0xd
0|35|libxul.so|XRE_RunAppShell()|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|913|0xe
0|36|libxul.so|mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*)|hg:hg.mozilla.org/mozilla-central:ipc/glue/MessagePump.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|237|0x5
0|37|libxul.so|MessageLoop::RunInternal()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|334|0x17
0|38|libxul.so|MessageLoop::Run()|hg:hg.mozilla.org/mozilla-central:ipc/chromium/src/base/message_loop.cc:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|309|0x8
0|39|libxul.so|XRE_InitChildProcess(int, char**, XREChildData const*)|hg:hg.mozilla.org/mozilla-central:toolkit/xre/nsEmbedFunctions.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|744|0x5
0|40|firefox-bin|content_process_main(mozilla::Bootstrap*, int, char**)|hg:hg.mozilla.org/mozilla-central:ipc/contentproc/plugin-container.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|56|0x11
0|41|firefox-bin|main|hg:hg.mozilla.org/mozilla-central:browser/app/nsBrowserApp.cpp:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|303|0x20
0|42|libc.so.6||||0x21b97
0|43|firefox-bin|<name omitted>|hg:hg.mozilla.org/mozilla-central:mfbt/UniquePtr.h:2aa3b889d60386ac20e2a7ab7f315a742a2eea87|253|0x17

Comment 1

[Jason Kratzer [:jkratzer]]

Bugmon Analysis:
Verified bug as reproducible on mozilla-central 20200715093718-d4c6cd2e13bb.
Failed to bisect testcase (Start build crashes!):
> Start: e8b7c48d4e7ed1b63aeedff379b51e566ea499d9 (20191107015224)
> End: d4c6cd2e13bb057eb4d5f8c579f440936bf17241 (20200715093718)
> BuildFlags: BuildFlags(asan=False, tsan=False, debug=True, fuzzing=True, coverage=False, valgrind=False)

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Since nightly and release are affected, beta will likely be affected too.
For more information, please visit BugBot documentation.

Comment 4

[Bugmon [:jkratzer for issues]]

Bugmon was unable reproduce this issue.
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.

Comment 5

[Jason Kratzer [:jkratzer]]

A change to the Taskcluster build definitions over the weekend caused Bugmon to fail when reproducing issues. This issue has been corrected. Re-enabling bugmon.

Comment 7

[Daniel Holbert [:dholbert]]

This is still reproducible with the attached minimized testcase, for what it's worth (in a debug build from today's mozilla-central).