1975992 - Crash [@ mozilla::dom::AdjustedTargetForFilter::StrokeLine]

Status: RESOLVED DUPLICATE of bug 1975981

(Core :: Graphics: Canvas2D, defect)

Description

[Jason Kratzer [:jkratzer]]

Testcase found while fuzzing mozilla-central rev 58b3d4ba196f (built with: --enable-address-sanitizer --enable-fuzzing).

Testcase can be reproduced using the following commands:

$ pip install fuzzfetch grizzly-framework --upgrade
$ python -m fuzzfetch --build 58b3d4ba196f --asan --fuzzing  -n firefox
$ python -m grizzly.replay.bugzilla ./firefox/firefox <bugid>

[@ mozilla::dom::AdjustedTargetForFilter::StrokeLine]

    =================================================================
    ==953331==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000061 (pc 0x7b94a6c7cd06 bp 0x7ffe78e559d0 sp 0x7ffe78e55960 T0)
    ==953331==The signal is caused by a READ memory access.
    ==953331==Hint: address points to the zero page.
        #0 0x7b94a6c7cd06 in mozilla::dom::AdjustedTargetForFilter::StrokeLine(mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::Pattern const&, mozilla::gfx::StrokeOptions const&, mozilla::gfx::DrawOptions const&) /dom/canvas/CanvasRenderingContext2D.cpp:470:9
        #1 0x7b94a6b4ca10 in mozilla::dom::AdjustedTarget::StrokeLine(mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::Pattern const&, mozilla::gfx::StrokeOptions const&, mozilla::gfx::DrawOptions const&) /dom/canvas/CanvasRenderingContext2D.cpp:871:22
        #2 0x7b94a6b4c09d in mozilla::dom::CanvasRenderingContext2D::StrokeRect(double, double, double, double) /dom/canvas/CanvasRenderingContext2D.cpp:3466:12
        #3 0x7b94a568f61c in mozilla::dom::OffscreenCanvasRenderingContext2D_Binding::strokeRect(JSContext*, JS::Handle<JSObject*>, void*, JSJitMethodCallArgs const&) /builds/worker/workspace/obj-build/dom/bindings/./OffscreenCanvasRenderingContext2DBinding.cpp:3523:24
        #4 0x7b94a6988d9f in bool mozilla::dom::binding_detail::GenericMethod<mozilla::dom::binding_detail::NormalThisPolicy, mozilla::dom::binding_detail::ThrowExceptions>(JSContext*, unsigned int, JS::Value*) /dom/bindings/BindingUtils.cpp:3306:13
        #5 0x7b94ad70f857 in CallJSNative /js/src/vm/Interpreter.cpp:501:13
        #6 0x7b94ad70f857 in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /js/src/vm/Interpreter.cpp:597:12
        #7 0x7b94ad72e2c8 in InternalCall /js/src/vm/Interpreter.cpp:664:10
        #8 0x7b94ad72e2c8 in CallFromStack /js/src/vm/Interpreter.cpp:669:10
        #9 0x7b94ad72e2c8 in js::Interpret(JSContext*, js::RunState&) /js/src/vm/Interpreter.cpp:3287:16
        #10 0x7b94ad70e639 in MaybeEnterInterpreterTrampoline /js/src/vm/Interpreter.cpp:395:10
        #11 0x7b94ad70e639 in js::RunScript(JSContext*, js::RunState&) /js/src/vm/Interpreter.cpp:471:13
        #12 0x7b94ad70f9cd in js::InternalCallOrConstruct(JSContext*, JS::CallArgs const&, js::MaybeConstruct, js::CallReason) /js/src/vm/Interpreter.cpp:629:13
        #13 0x7b94ad7116d1 in InternalCall /js/src/vm/Interpreter.cpp:664:10
        #14 0x7b94ad7116d1 in js::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, js::AnyInvokeArgs const&, JS::MutableHandle<JS::Value>, js::CallReason) /js/src/vm/Interpreter.cpp:696:8
        #15 0x7b94ad853cfa in JS::Call(JSContext*, JS::Handle<JS::Value>, JS::Handle<JS::Value>, JS::HandleValueArray const&, JS::MutableHandle<JS::Value>) /js/src/vm/CallAndConstruct.cpp:119:10
        #16 0x7b94a64d8575 in mozilla::dom::EventListener::HandleEvent(mozilla::dom::BindingCallContext&, JS::Handle<JS::Value>, mozilla::dom::Event&, mozilla::ErrorResult&) /builds/worker/workspace/obj-build/dom/bindings/./EventListenerBinding.cpp:62:8
        #17 0x7b94a7812429 in void mozilla::dom::EventListener::HandleEvent<mozilla::dom::EventTarget*>(mozilla::dom::EventTarget* const&, mozilla::dom::Event&, mozilla::ErrorResult&, char const*, mozilla::dom::CallbackObjectBase::ExceptionHandling, JS::Realm*) /builds/worker/workspace/obj-build/dist/include/mozilla/dom/EventListenerBinding.h:65:12
        #18 0x7b94a7811afd in mozilla::EventListenerManager::HandleEventSingleListener(mozilla::EventListenerManager::Listener*, nsAtom*, mozilla::WidgetEvent*, mozilla::dom::Event*, mozilla::dom::EventTarget*, bool) /dom/events/EventListenerManager.cpp:1362:43
        #19 0x7b94a7813b80 in mozilla::EventListenerManager::HandleEventWithListenerArray(mozilla::EventListenerManager::ListenerArray*, nsAtom*, mozilla::EventMessage, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, bool) /dom/events/EventListenerManager.cpp:1674:12
        #20 0x7b94a7812ad9 in mozilla::EventListenerManager::HandleEventInternal(nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event**, mozilla::dom::EventTarget*, nsEventStatus*, bool) /dom/events/EventListenerManager.cpp:1579:35
        #21 0x7b94a77fabd9 in HandleEvent /builds/worker/workspace/obj-build/dist/include/mozilla/EventListenerManager.h:466:5
        #22 0x7b94a77fabd9 in mozilla::EventTargetChainItem::HandleEvent(mozilla::EventChainPostVisitor&, mozilla::ELMCreationDetector&) /dom/events/EventDispatcher.cpp:365:17
        #23 0x7b94a77f86e8 in mozilla::EventTargetChainItem::HandleEventTargetChain(nsTArray<mozilla::EventTargetChainItem>&, mozilla::EventChainPostVisitor&, mozilla::EventDispatchingCallback*, mozilla::ELMCreationDetector&) /dom/events/EventDispatcher.cpp:606:16
        #24 0x7b94a77ff5a6 in mozilla::EventDispatcher::Dispatch(mozilla::dom::EventTarget*, nsPresContext*, mozilla::WidgetEvent*, mozilla::dom::Event*, nsEventStatus*, mozilla::EventDispatchingCallback*, nsTArray<mozilla::dom::EventTarget*>*) /dom/events/EventDispatcher.cpp:1268:11
        #25 0x7b94abd6c5bf in nsDocumentViewer::LoadComplete(nsresult) /layout/base/nsDocumentViewer.cpp:1031:7
        #26 0x7b94ac66269b in nsDocShell::EndPageLoad(nsIWebProgress*, nsIChannel*, nsresult) /docshell/base/nsDocShell.cpp:6445:13
        #27 0x7b94ac661622 in nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) /docshell/base/nsDocShell.cpp:5765:7
        #28 0x7b94ac663aa2 in non-virtual thunk to nsDocShell::OnStateChange(nsIWebProgress*, nsIRequest*, unsigned int, nsresult) /docshell/base/nsDocShell.cpp
        #29 0x7b94a282de65 in nsDocLoader::DoFireOnStateChange(nsIWebProgress*, nsIRequest*, int&, nsresult) /uriloader/base/nsDocLoader.cpp:1477:3
        #30 0x7b94a282cc55 in nsDocLoader::doStopDocumentLoad(nsIRequest*, nsresult) /uriloader/base/nsDocLoader.cpp:1010:14
        #31 0x7b94a2828e57 in nsDocLoader::DocLoaderIsEmpty(bool, mozilla::Maybe<nsresult> const&) /uriloader/base/nsDocLoader.cpp:831:9
        #32 0x7b94a282b979 in nsDocLoader::OnStopRequest(nsIRequest*, nsresult) /uriloader/base/nsDocLoader.cpp:712:5
        #33 0x7b94ac6ae4b4 in nsDocShell::OnStopRequest(nsIRequest*, nsresult) /docshell/base/nsDocShell.cpp:14353:23
        #34 0x7b94a107ac74 in mozilla::net::nsLoadGroup::NotifyRemovalObservers(nsIRequest*, nsresult) /netwerk/base/nsLoadGroup.cpp:657:22
        #35 0x7b94a107d073 in mozilla::net::nsLoadGroup::RemoveRequest(nsIRequest*, nsISupports*, nsresult) /netwerk/base/nsLoadGroup.cpp:541:10
        #36 0x7b94a4b39fb2 in DoUnblockOnload /dom/base/Document.cpp:12303:18
        #37 0x7b94a4b39fb2 in mozilla::dom::Document::UnblockOnload(bool) /dom/base/Document.cpp:12242:7
        #38 0x7b94a4b6af2a in mozilla::dom::Document::DispatchContentLoadedEvents() /dom/base/Document.cpp:8589:3
        #39 0x7b94a4c959af in operator()<> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1085:18
        #40 0x7b94a4c959af in __invoke_impl<void, (lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1084:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:60:14
        #41 0x7b94a4c959af in __invoke<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1084:9)> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/bits/invoke.h:95:14
        #42 0x7b94a4c959af in __apply_impl<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1084:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/tuple:1678:14
        #43 0x7b94a4c959af in apply<(lambda at /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1084:9), std::tuple<> &> /builds/worker/fetches/sysroot-x86_64-linux-gnu/usr/lib/gcc/x86_64-linux-gnu/8/../../../../include/c++/8/tuple:1687:14
        #44 0x7b94a4c959af in apply<mozilla::dom::Document, void (mozilla::dom::Document::*)()> /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1083:12
        #45 0x7b94a4c959af in mozilla::detail::RunnableMethodImpl<mozilla::dom::Document*, void (mozilla::dom::Document::*)(), true, (mozilla::RunnableKind)0>::Run() /builds/worker/workspace/obj-build/dist/include/nsThreadUtils.h:1134:13
        #46 0x7b94a0c82bea in mozilla::RunnableTask::Run() /xpcom/threads/TaskController.cpp:703:16
        #47 0x7b94a0c70658 in mozilla::TaskController::RunTask(mozilla::Task*) /xpcom/threads/TaskController.cpp:196:19
        #48 0x7b94a0c7773d in mozilla::TaskController::DoExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /xpcom/threads/TaskController.cpp:1310:20
        #49 0x7b94a0c75278 in mozilla::TaskController::ExecuteNextTaskOnlyMainThreadInternal(mozilla::detail::BaseAutoLock<mozilla::Mutex&> const&) /xpcom/threads/TaskController.cpp:1133:15
        #50 0x7b94a0c75896 in mozilla::TaskController::ProcessPendingMTTask(bool) /xpcom/threads/TaskController.cpp:639:36
        #51 0x7b94a0c939a1 in operator() /xpcom/threads/TaskController.cpp:333:37
        #52 0x7b94a0c939a1 in mozilla::detail::RunnableFunction<mozilla::TaskController::TaskController()::$_0>::Run() /xpcom/threads/nsThreadUtils.h:548:5
        #53 0x7b94a0cb284b in nsThread::ProcessNextEvent(bool, bool*) /xpcom/threads/nsThread.cpp:1159:16
        #54 0x7b94a0cbd1c8 in NS_ProcessNextEvent(nsIThread*, bool) /xpcom/threads/nsThreadUtils.cpp:480:10
        #55 0x7b94a235864e in mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) /ipc/glue/MessagePump.cpp:85:21
        #56 0x7b94a223c4a4 in RunInternal /ipc/chromium/src/base/message_loop.cc:369:10
        #57 0x7b94a223c4a4 in RunHandler /ipc/chromium/src/base/message_loop.cc:362:3
        #58 0x7b94a223c4a4 in MessageLoop::Run() /ipc/chromium/src/base/message_loop.cc:344:3
        #59 0x7b94ab4f7da6 in nsBaseAppShell::Run() /widget/nsBaseAppShell.cpp:148:27
        #60 0x7b94ab6cb47b in nsAppShell::Run() /widget/gtk/nsAppShell.cpp:471:33
        #61 0x7b94ad45161d in XRE_RunAppShell() /toolkit/xre/nsEmbedFunctions.cpp:647:20
        #62 0x7b94a223c4a4 in RunInternal /ipc/chromium/src/base/message_loop.cc:369:10
        #63 0x7b94a223c4a4 in RunHandler /ipc/chromium/src/base/message_loop.cc:362:3
        #64 0x7b94a223c4a4 in MessageLoop::Run() /ipc/chromium/src/base/message_loop.cc:344:3
        #65 0x7b94ad44fbee in XRE_InitChildProcess(int, char**, XREChildData const*) /toolkit/xre/nsEmbedFunctions.cpp:585:34
        #66 0x59df82ab3ee1 in main /browser/app/nsBrowserApp.cpp:397:22
        #67 0x7b94c4ac21c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
        #68 0x7b94c4ac228a in __libc_start_main csu/../csu/libc-start.c:360:3
        #69 0x59df829d3c88 in _start (/home/jkratzer/builds/m-c-20250706213835-fuzzing-asan-opt/firefox+0xc7c88) (BuildId: 1af34dcfe85c73e7d5761927a5271e634958d6bc)
    
    ==953331==Register values:
    rax = 0x0000000000000000  rbx = 0x00007ffe78e559e0  rcx = 0x00007b94c2e678f0  rdx = 0x00007b94c2e678d0  
    rdi = 0x0000000000000061  rsi = 0x00007b94c2e678b0  rbp = 0x00007ffe78e559d0  rsp = 0x00007ffe78e55960  
     r8 = 0x00007b94c2e67960   r9 = 0x00007b94c2e679a0  r10 = 0xffffffffffffff01  r11 = 0x0000000000000000  
    r12 = 0x00007b94c2e679a0  r13 = 0x00007b94c2e67960  r14 = 0x00007b94c2e678f0  r15 = 0x0000000000000000  
    AddressSanitizer can not provide additional info.
    SUMMARY: AddressSanitizer: SEGV /dom/canvas/CanvasRenderingContext2D.cpp:470:9 in mozilla::dom::AdjustedTargetForFilter::StrokeLine(mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::PointTyped<mozilla::gfx::UnknownUnits, float> const&, mozilla::gfx::Pattern const&, mozilla::gfx::StrokeOptions const&, mozilla::gfx::DrawOptions const&)
    ==953331==ABORTING

Comment 1

[Jason Kratzer [:jkratzer]]

Attachment: Testcase

Comment 2

[Bugmon [:jkratzer for issues]]

Verified bug as reproducible on mozilla-central 20250707093546-f2632c1dca98.
The bug appears to have been introduced in the following build range:

Start: c6d00b59234d7ed057f0f7197c30b73f03bfaaed (20250705001139)
End: 6ea4f3bba40f2fdf5c4893e0eb76fee7d4e05094 (20250705044646)
Pushlog: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=c6d00b59234d7ed057f0f7197c30b73f03bfaaed&tochange=6ea4f3bba40f2fdf5c4893e0eb76fee7d4e05094

Comment 4

[Bugmon [:jkratzer for issues]]

No valid actions for resolution (DUPLICATE).
Removing bugmon keyword as no further action possible. Please review the bug and re-add the keyword for further analysis.