Open Bug 1772592 Opened 2 years ago Updated 2 years ago

AddressSanitizer: use-after-poison [@ nsBlockInFlowLineIterator::nsBlockInFlowLineIterator] with READ of size 8

Categories

(Core :: Disability Access APIs, defect)

Product:
Core
Component:
Disability Access APIs
Platform:
x86_64
Linux
Type:
defect

Tracking

()

People

(Reporter: jkratzer, Unassigned)

References

(Blocks 1 open bug)

Details

(Keywords: csectype-framepoisoning, regression, testcase, Whiteboard: [bugmon:bisected,confirmed][sg:dos])

Attachments

(1 file, 2 obsolete files)

testcase.zip
11.46 KB, application/zip
Details

Testcase found while fuzzing mozilla-central rev 2f53c261903e (built with: --enable-address-sanitizer --enable-fuzzing).

Testcase can be reproduced using the following commands:

$ pip install fuzzfetch grizzly-framework
$ python -m fuzzfetch --build 2f53c261903e --asan --fuzzing -n firefox
$ python -m grizzly.replay ./firefox/firefox testcase.zip

AddressSanitizer: use-after-poison [@ nsBlockInFlowLineIterator::nsBlockInFlowLineIterator] with READ of size 8

    =================================================================
    ==935416==ERROR: AddressSanitizer: use-after-poison on address 0x625000255dd8 at pc 0x7fa7857c8b81 bp 0x7ffe935d3cc0 sp 0x7ffe935d3cb8
    READ of size 8 at 0x625000255dd8 thread T0 (Isolated Web Co)
        #0 0x7fa7857c8b80 in nsBlockInFlowLineIterator::nsBlockInFlowLineIterator(nsBlockFrame*, nsIFrame*, bool*) /layout/generic/nsBlockFrame.cpp
        #1 0x7fa785a52389 in LineStartsOrEndsAtHardLineBreak(nsTextFrame*, nsBlockFrame*, bool*, bool*) /layout/generic/nsTextFrame.cpp:10167:29
        #2 0x7fa785a28176 in nsTextFrame::GetRenderedText(unsigned int, unsigned int, nsIFrame::TextOffsetType, nsIFrame::TrailingWhitespace) /layout/generic/nsTextFrame.cpp:10229:7
        #3 0x7fa7893b59aa in nsTextEquivUtils::AppendTextEquivFromTextContent(nsIContent*, nsTSubstring<char16_t>*) /accessible/base/nsTextEquivUtils.cpp:111:46
        #4 0x7fa7893b4f1c in nsTextEquivUtils::AppendFromAccessible(mozilla::a11y::Accessible*, nsTSubstring<char16_t>*) /accessible/base/nsTextEquivUtils.cpp:167:19
        #5 0x7fa7893b4581 in AppendFromAccessibleChildren /accessible/base/nsTextEquivUtils.cpp:154:10
        #6 0x7fa7893b4581 in nsTextEquivUtils::GetNameFromSubtree(mozilla::a11y::LocalAccessible const*, nsTSubstring<char16_t>&) /accessible/base/nsTextEquivUtils.cpp:41:7
        #7 0x7fa7893d65a6 in mozilla::a11y::LocalAccessible::NativeName(nsTString<char16_t>&) const /accessible/generic/LocalAccessible.cpp:2430:5
        #8 0x7fa789402409 in mozilla::a11y::HyperTextAccessible::NativeName(nsTString<char16_t>&) const /accessible/generic/HyperTextAccessible.cpp:2075:45
        #9 0x7fa7893dd933 in mozilla::a11y::LocalAccessible::Name(nsTString<char16_t>&) const /accessible/generic/LocalAccessible.cpp:147:29
        #10 0x7fa78935153d in mozilla::a11y::EventQueue::PushNameOrDescriptionChange(mozilla::a11y::LocalAccessible*) /accessible/base/EventQueue.cpp:78:43
        #11 0x7fa789353bbf in mozilla::a11y::NotificationController::QueueMutationEvent(mozilla::a11y::AccTreeMutationEvent*) /accessible/base/NotificationController.cpp:213:9
        #12 0x7fa789354a93 in mozilla::a11y::TreeMutation::BeforeRemoval(mozilla::a11y::LocalAccessible*, bool) /accessible/base/EventTree.cpp:87:21
        #13 0x7fa7893e9e57 in mozilla::a11y::DocAccessible::ContentRemoved(mozilla::a11y::LocalAccessible*) /accessible/generic/DocAccessible.cpp:2057:6
        #14 0x7fa7893e4185 in mozilla::a11y::DocAccessible::ContentRemoved(nsIContent*) /accessible/generic/DocAccessible.cpp:2086:5
        #15 0x7fa7893ea2f1 in mozilla::a11y::DocAccessible::RecreateAccessible(nsIContent*) /accessible/generic/DocAccessible.cpp:1385:3
        #16 0x7fa78593d1ca in nsImageFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsImageFrame.cpp:373:3
        #17 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #18 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #19 0x7fa78595a895 in nsInlineFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsInlineFrame.cpp:179:21
        #20 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #21 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #22 0x7fa78595a895 in nsInlineFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsInlineFrame.cpp:179:21
        #23 0x7fa7859cae86 in nsLineBox::DeleteLineList(nsPresContext*, nsLineList&, nsIFrame*, nsFrameList*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsLineBox.cpp:387:14
        #24 0x7fa78579d6fa in nsBlockFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsBlockFrame.cpp:480:3
        #25 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #26 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #27 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #28 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #29 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #30 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #31 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #32 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #33 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #34 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #35 0x7fa78583d54c in nsFrameList::DestroyFramesFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsFrameList.cpp:50:12
        #36 0x7fa78579df41 in nsContainerFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsContainerFrame.cpp:227:11
        #37 0x7fa78595a895 in nsInlineFrame::DestroyFrom(nsIFrame*, mozilla::layout::PostFrameDestroyData&) /layout/generic/nsInlineFrame.cpp:179:21
        #38 0x7fa7857e6639 in Destroy /layout/generic/nsIFrame.h:672:5
        #39 0x7fa7857e6639 in nsContainerFrame::RemoveFrame(mozilla::layout::FrameChildListID, nsIFrame*) /layout/generic/nsContainerFrame.cpp:181:19
        #40 0x7fa78567ceb2 in nsCSSFrameConstructor::ContentRemoved(nsIContent*, nsIContent*, nsCSSFrameConstructor::RemoveFlags) /layout/base/nsCSSFrameConstructor.cpp:7735:5
        #41 0x7fa785671082 in nsCSSFrameConstructor::RecreateFramesForContent(nsIContent*, nsCSSFrameConstructor::InsertionKind) /layout/base/nsCSSFrameConstructor.cpp:8708:7
        #42 0x7fa78567e5e3 in nsCSSFrameConstructor::MaybeRecreateContainerForFrameRemoval(nsIFrame*) /layout/base/nsCSSFrameConstructor.cpp
        #43 0x7fa785671028 in nsCSSFrameConstructor::RecreateFramesForContent(nsIContent*, nsCSSFrameConstructor::InsertionKind) /layout/base/nsCSSFrameConstructor.cpp:8697:16
        #44 0x7fa7856047b1 in mozilla::RestyleManager::ProcessRestyledFrames(nsStyleChangeList&) /layout/base/RestyleManager.cpp:1565:25
        #45 0x7fa78560ddd5 in mozilla::RestyleManager::DoProcessPendingRestyles(mozilla::ServoTraversalFlags) /layout/base/RestyleManager.cpp:3117:9
        #46 0x7fa7855d5186 in mozilla::RestyleManager::ProcessPendingRestyles() /layout/base/RestyleManager.cpp:3197:3
        #47 0x7fa7855d3984 in mozilla::PresShell::DoFlushPendingNotifications(mozilla::ChangesToFlush) /layout/base/PresShell.cpp:4320:39
        #48 0x7fa78555c391 in nsRefreshDriver::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsRefreshDriver::IsExtraTick) /layout/base/nsRefreshDriver.cpp:2552:22
        #49 0x7fa785569ed7 in TickDriver /layout/base/nsRefreshDriver.cpp:375:13
        #50 0x7fa785569ed7 in mozilla::RefreshDriverTimer::TickRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsTArray<RefPtr<nsRefreshDriver> >&) /layout/base/nsRefreshDriver.cpp:353:7
        #51 0x7fa785569c3d in mozilla::RefreshDriverTimer::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /layout/base/nsRefreshDriver.cpp:369:5
        #52 0x7fa7855694a5 in mozilla::VsyncRefreshDriverTimer::RunRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /layout/base/nsRefreshDriver.cpp:896:5
        #53 0x7fa785568b6f in mozilla::VsyncRefreshDriverTimer::TickRefreshDriver(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) /layout/base/nsRefreshDriver.cpp:810:5
        #54 0x7fa7855682b9 in mozilla::VsyncRefreshDriverTimer::NotifyVsyncOnMainThread(mozilla::VsyncEvent const&) /layout/base/nsRefreshDriver.cpp:731:5
        #55 0x7fa785567be9 in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsyncTimerOnMainThread() /layout/base/nsRefreshDriver.cpp:594:14
        #56 0x7fa785567794 in mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync(mozilla::VsyncEvent const&) /layout/base/nsRefreshDriver.cpp:551:9
        #57 0x7fa7841a42ed in mozilla::dom::VsyncMainChild::RecvNotify(mozilla::VsyncEvent const&, float const&) /dom/ipc/VsyncMainChild.cpp:68:15
        #58 0x7fa7845f2432 in mozilla::dom::PVsyncChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PVsyncChild.cpp:220:78
        #59 0x7fa77e0e4a65 in mozilla::ipc::PBackgroundChild::OnMessageReceived(IPC::Message const&) /builds/worker/workspace/obj-build/ipc/ipdl/PBackgroundChild.cpp:6088:32
        #60 0x7fa77e042db9 in mozilla::ipc::MessageChannel::DispatchAsyncMessage(mozilla::ipc::ActorLifecycleProxy*, IPC::Message const&) /ipc/glue/MessageChannel.cpp:1781:25
        #61 0x7fa77e03fe27 in mozilla::ipc::MessageChannel::DispatchMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::UniquePtr<IPC::Message, mozilla::DefaultDelete<IPC::Message> >) /ipc/glue/MessageChannel.cpp:1706:9
        #62 0x7fa77e040a74 in mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::ActorLifecycleProxy*, mozilla::ipc::MessageChannel::MessageTask&) /ipc/glue/MessageChannel.cpp:1506:3
        #63 0x7fa77e041d02 in mozilla::ipc::MessageChannel::MessageTask::Run() /ipc/glue/MessageChannel.cpp:1604:14
        #64 0x7fa77c8f94d2 in mozilla::RunnableTask::Run() /xpcom/threads/TaskController.cpp:475:16
        #65 0x7fa77c8beb15 in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /xpcom/threads/TaskController.cpp:788:26
        #66 0x7fa77c8bbcc8 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /xpcom/threads/TaskController.cpp:620:15
        #67 0x7fa77c8bc3f0 in mozilla::TaskController::ProcessPendingMTTask(bool) /xpcom/threads/TaskController.cpp:398:36
        #68 0x7fa77c902104 in operator() /xpcom/threads/TaskController.cpp:127:37
        #69 0x7fa77c902104 in mozilla::detail::RunnableFunction<mozilla::TaskController::InitializeInternal()::$_1>::Run() /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:531:5
        #70 0x7fa77c8df8b7 in nsThread::ProcessNextEvent(bool, bool*) /xpcom/threads/nsThread.cpp:1180:16
        #71 0x7fa77c8e9ce4 in NS_ProcessNextEvent(nsIThread*, bool) /xpcom/threads/nsThreadUtils.cpp:465:10
        #72 0x7fa77e04a574 in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /ipc/glue/MessagePump.cpp:107:5
        #73 0x7fa77decab71 in RunInternal /ipc/chromium/src/base/message_loop.cc:380:10
        #74 0x7fa77decab71 in RunHandler /ipc/chromium/src/base/message_loop.cc:373:3
        #75 0x7fa77decab71 in MessageLoop::Run() /ipc/chromium/src/base/message_loop.cc:355:3
        #76 0x7fa784fc4197 in nsBaseAppShell::Run() /widget/nsBaseAppShell.cpp:137:27
        #77 0x7fa789fd7d57 in XRE_RunAppShell() /toolkit/xre/nsEmbedFunctions.cpp:875:20
        #78 0x7fa77decab71 in RunInternal /ipc/chromium/src/base/message_loop.cc:380:10
        #79 0x7fa77decab71 in RunHandler /ipc/chromium/src/base/message_loop.cc:373:3
        #80 0x7fa77decab71 in MessageLoop::Run() /ipc/chromium/src/base/message_loop.cc:355:3
        #81 0x7fa789fd6ebf in XRE_InitChildProcess(int, char**, XREChildData const*) /toolkit/xre/nsEmbedFunctions.cpp:734:34
        #82 0x559235e7f6c5 in content_process_main(mozilla::Bootstrap*, int, char**) /browser/app/../../ipc/contentproc/plugin-container.cpp:57:28
        #83 0x559235e7fa76 in main /browser/app/nsBrowserApp.cpp:338:18
        #84 0x7fa7a3c3e082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
        #85 0x559235dbfb09 in _start (/home/jkratzer/builds/mc-asan/firefox+0x77b09) (BuildId: 09f49d8cb6a9ec3c101de986fdb69b53e1fe5daf)
    
    0x625000255dd8 is located 1240 bytes inside of 8192-byte region [0x625000255900,0x625000257900)
    allocated by thread T0 (Isolated Web Co) here:
        #0 0x559235e4202e in __interceptor_malloc /builds/worker/fetches/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:69:3
        #1 0x7fa77c8966f0 in mozilla::ArenaAllocator<8192ul, 8ul>::AllocateChunk(unsigned long) /builds/worker/workspace/obj-build/dist/include/mozilla/ArenaAllocator.h:170:15
        #2 0x7fa78571a53d in InternalAllocate /builds/worker/workspace/obj-build/dist/include/mozilla/ArenaAllocator.h:204:25
        #3 0x7fa78571a53d in Allocate /builds/worker/workspace/obj-build/dist/include/mozilla/ArenaAllocator.h:66:12
        #4 0x7fa78571a53d in mozilla::ArenaAllocator<8192ul, 8ul>::Allocate(unsigned long) /builds/worker/workspace/obj-build/dist/include/mozilla/ArenaAllocator.h:70:15
        #5 0x7fa785a2a2cd in AllocateByObjectID /builds/worker/workspace/obj-build/dist/include/mozilla/PresShell.h:280:32
        #6 0x7fa785a2a2cd in AllocateFrame /builds/worker/workspace/obj-build/dist/include/mozilla/PresShell.h:272:12
        #7 0x7fa785a2a2cd in operator new /layout/generic/nsTextFrame.cpp:4804:1
        #8 0x7fa785a2a2cd in NS_NewTextFrame(mozilla::PresShell*, mozilla::ComputedStyle*) /layout/generic/nsTextFrame.cpp:4801:10
        #9 0x7fa785667b0f in nsCSSFrameConstructor::ConstructTextFrame(nsCSSFrameConstructor::FrameConstructionData const*, nsFrameConstructorState&, nsIContent*, nsContainerFrame*, mozilla::ComputedStyle*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3353:7
        #10 0x7fa785670c58 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5738:5
        #11 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #12 0x7fa78566b80c in nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:11062:3
        #13 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
        #14 0x7fa785670a28 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5751:3
        #15 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #16 0x7fa78566b80c in nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:11062:3
        #17 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
        #18 0x7fa785670a28 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5751:3
        #19 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #20 0x7fa78566b80c in nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:11062:3
        #21 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
        #22 0x7fa785670a28 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5751:3
        #23 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #24 0x7fa78566b80c in nsCSSFrameConstructor::ConstructInline(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:11062:3
        #25 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
        #26 0x7fa785670a28 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5751:3
        #27 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #28 0x7fa78565c7c8 in nsCSSFrameConstructor::ConstructTableCell(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:2258:5
        #29 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
        #30 0x7fa785670a28 in nsCSSFrameConstructor::ConstructFramesFromItem(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList::Iterator&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:5751:3
        #31 0x7fa78565a295 in nsCSSFrameConstructor::ConstructFramesFromItemList(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItemList&, nsContainerFrame*, bool, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:9611:5
        #32 0x7fa78565aec3 in nsCSSFrameConstructor::ProcessChildren(nsFrameConstructorState&, nsIContent*, mozilla::ComputedStyle*, nsContainerFrame*, bool, nsFrameList&, bool, nsIFrame*) /layout/base/nsCSSFrameConstructor.cpp:9775:3
        #33 0x7fa78565bd01 in nsCSSFrameConstructor::ConstructTableRowOrRowGroup(nsFrameConstructorState&, nsCSSFrameConstructor::FrameConstructionItem&, nsContainerFrame*, nsStyleDisplay const*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:2163:5
        #34 0x7fa785668f4b in nsCSSFrameConstructor::ConstructFrameFromItemInternal(nsCSSFrameConstructor::FrameConstructionItem&, nsFrameConstructorState&, nsContainerFrame*, nsFrameList&) /layout/base/nsCSSFrameConstructor.cpp:3731:16
    
    SUMMARY: AddressSanitizer: use-after-poison /layout/generic/nsBlockFrame.cpp in nsBlockInFlowLineIterator::nsBlockInFlowLineIterator(nsBlockFrame*, nsIFrame*, bool*)
    Shadow bytes around the buggy address:
      0x0c4a80042b60: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
      0x0c4a80042b70: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
      0x0c4a80042b80: f7 f7 f7 f7 f7 f7 f7 f7 00 00 00 00 00 00 00 00
      0x0c4a80042b90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c4a80042ba0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    =>0x0c4a80042bb0: 00 00 00 00 00 00 00 00 00 00 f7[f7]f7 f7 f7 f7
      0x0c4a80042bc0: f7 f7 f7 f7 00 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
      0x0c4a80042bd0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
      0x0c4a80042be0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
      0x0c4a80042bf0: f7 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c4a80042c00: 00 00 00 00 00 00 00 f7 f7 00 00 00 00 00 00 00
    Shadow byte legend (one shadow byte represents 8 application bytes):
      Addressable:           00
      Partially addressable: 01 02 03 04 05 06 07 
      Heap left redzone:       fa
      Freed heap region:       fd
      Stack left redzone:      f1
      Stack mid redzone:       f2
      Stack right redzone:     f3
      Stack after return:      f5
      Stack use after scope:   f8
      Global redzone:          f9
      Global init order:       f6
      Poisoned by user:        f7
      Container overflow:      fc
      Array cookie:            ac
      Intra object redzone:    bb
      ASan internal:           fe
      Left alloca redzone:     ca
      Right alloca redzone:    cb
    ==935416==ABORTING
Attached file Testcase (obsolete) — 

    
    

    
  
This poking at a text frame, allocated in a textFrame pool so it certainly matches the use-after-poison description and should, therefore, be just a stability issue. But none of the addresses reported by ASAN show any sign of the poisoning address (pointed at explicitly un-mapped memory) that would make a frame-related UAF safe. I don't know if this is a sec-high UAF or not!


Group: core-security → layout-core-security

    
    

    
  
Two possible solutions:


    

  1. Queue the RecreateAccessible call so it runs when it's safe.
    2. 

  2. Similar to bug 1610088, have some state flag somewhere which says it's not safe to use layout and check that flag in relevant places.
    3. 




    
  
Severity: -- → S3

    
    

    
  


[this code] matches the use-after-poison description and should, therefore, be just a stability issue. But none of the addresses reported by ASAN show any sign of the poisoning address (pointed at explicitly un-mapped memory) that would make a frame-related UAF safe.




This is because ASAN uses its own poison address. Running this test in a debug build should let us know if it's really frame-poisoning of not.



    
    

    
  
Tyson confirms this crash is really protected by our frame-poisoning mitigation, e.g. rdi: 0x7ffffffff0dea81b (and similar in a few other registers).


Group: layout-core-security
Keywords: csectype-framepoisoning
Whiteboard: [bugmon:confirm] → [bugmon:confirm][sg:dos]

    
    

    
  
Bugmon Analysis

Unable to reproduce bug 1772592 using build mozilla-central 20220603093350-2f53c261903e.  Without a baseline, bugmon is unable to analyze this bug.

Removing bugmon keyword as no further action possible.  Please review the bug and re-add the keyword for further analysis.


Keywords: bugmon

    
  
Flags: needinfo?(jkratzer)

    
    

    
  

      
      
      
      

        Attached file
          
        testcase.zip (obsolete)
        — 
      

    


  

        Attachment #9279660 -
        Attachment is obsolete: true
Flags: needinfo?(jkratzer)

    
  
Keywords: bugmon

    
    

    
  

      
      
      
      

        Attached file
          
        testcase.zip
        — 
      

    


  

        Attachment #9292039 -
        Attachment is obsolete: true

    
    

    
  
Bugmon Analysis

Verified bug as reproducible on mozilla-central 20220829094551-ad01d1ce5556.

The bug appears to have been introduced in the following build range:




Start: 79a95b01b69d1517d1a4052a1137b14d1c0a9663 (20220526153457)

End: 111da7fafa00f6e16cad3bd9c5a30190fc8c549e (20220526170736)

Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=79a95b01b69d1517d1a4052a1137b14d1c0a9663&tochange=111da7fafa00f6e16cad3bd9c5a30190fc8c549e




Keywords: regression
Whiteboard: [bugmon:confirm][sg:dos] → [bugmon:bisected,confirmed][sg:dos]

    
    

    
  
Bugmon Analysis

Testcase crashes using the initial build (mozilla-central 20220603093350-2f53c261903e) but not with tip (mozilla-central 20220910094302-9acb1117b572.)


The bug appears to have been fixed in the following build range:




Start: a4ef3b241decd01f778448bb227cff3a91c674ec (20220903212426)

End: 08105e2d612c8a4b1f2b388dea58b6d70ff13e5a (20220903214428)

Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=a4ef3b241decd01f778448bb227cff3a91c674ec&tochange=08105e2d612c8a4b1f2b388dea58b6d70ff13e5a




jkratzer, can you confirm that the above bisection range is responsible for fixing this issue?

Removing bugmon keyword as no further action possible.  Please review the bug and re-add the keyword for further analysis.


Flags: needinfo?(jkratzer)
Keywords: bugmon

    
    

    
  
The fuzzers haven't seen this since 2022/06/06.  :smaug, is it possible that this was fixed via bug 1788125?


Flags: needinfo?(jkratzer) → needinfo?(smaug)

    
    

    
  
No, that shouldn't fix anything like this. It might make triggering the issue harder though, if the test is using sync XHR.


Flags: needinfo?(smaug)

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