Bug 303375 – [GTK] Regression: inspector/debugger/async-stack-trace-basic.html and inspector/debugger/async-stack-trace-truncate.html are crashing

• Status: REOPENED
• Component: WebKitGTK

[Claudio Saavedra]

They are crashing most of the times, I can't pinpoint the exact commit where it started crashing, but it is between 302018@main and 302028@main: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&test=inspector%2Fdebugger%2Fasync-stack-trace-basic.html&test=inspector%2Fdebugger%2Fasync-stack-trace-truncate.html&platform=GTK

Crash with assertions enabled (debug):

STDERR: ASSERTION FAILED: !m_isUpdatingRendering
STDERR: ../../../Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp(184) : void WebKit::LayerTreeHost::updateRendering()
STDERR: 1   0x7f35eb097361 WebKit::LayerTreeHost::updateRendering()
STDERR: 2   0x7f35eb097945 WebKit::LayerTreeHost::renderingUpdateRunLoopObserverFired()
STDERR: 3   0x7f35eb096865 operator()
STDERR: 4   0x7f35eb0bcb34 call
STDERR: 5   0x7f35e84a1fad WTF::Function<void ()>::operator()() const
STDERR: 6   0x7f35f120df3b WebCore::RunLoopObserver::runLoopObserverFired()
STDERR: 7   0x7f35f137ab74 operator()
STDERR: 8   0x7f35f13867a4 call
STDERR: 9   0x7f35d8dff549 WTF::Function<WTF::ActivityObserver::NotifyResult ()>::operator()() const
STDERR: 10  0x7f35d8dfd868 WTF::ActivityObserver::notify() const
STDERR: 11  0x7f35d8dfeae7 WTF::RunLoop::notifyActivity(WTF::RunLoop::Activity)
STDERR: 12  0x7f35d8dfe121 WTF::RunLoop::runGLibMainLoopIteration(WTF::RunLoop::MayBlock)
STDERR: 13  0x7f35d8dfe4df WTF::RunLoop::cycle(unsigned int)
STDERR: 14  0x7f35f0823916 WebCore::PageDebugger::platformShouldContinueRunningEventLoopWhilePaused()
STDERR: 15  0x7f35f08234cc WebCore::PageDebugger::runEventLoopWhilePausedInternal()
STDERR: 16  0x7f35f0823472 WebCore::PageDebugger::runEventLoopWhilePaused()
STDERR: 17  0x7f35d6a36b34 JSC::Debugger::handlePause(JSC::JSGlobalObject*)
STDERR: 18  0x7f35d6a36848 JSC::Debugger::pauseIfNeeded(JSC::JSGlobalObject*)
STDERR: 19  0x7f35d6a3595c JSC::Debugger::updateCallFrame(JSC::JSGlobalObject*, JSC::CallFrame*, JSC::Debugger::CallFrameUpdateAction)
STDERR: 20  0x7f35d6a37e4b JSC::Debugger::didReachDebuggerStatement(JSC::CallFrame*)
STDERR: 21  0x7f35d7900332 JSC::Interpreter::debug(JSC::CallFrame*, JSC::DebugHookType, JSC::JSValue)
STDERR: 22  0x7f35d7add2ae llint_slow_path_debug
STDERR: 23  0x7f35d60d15f3 llint_op_debug


Crash without assertions (Release):

Thread 1 (Thread 0x7f35062f8440 (LWP 2393979)):
#0  0x00007f350fbfde0f in WTFCrash () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#1  0x00007f3513d21b35 in WTF::Detail::CallableWrapper<WebKit::LayerTreeHost::LayerTreeHost(WebKit::WebPage&)::{lambda()#1}, void>::call() () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libwebkitgtk-6.0.so.4
#2  0x00007f350fd35e1f in WTF::RunLoop::notifyActivity(WTF::RunLoop::Activity) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#3  0x00007f350fd36762 in WTF::RunLoop::runGLibMainLoopIteration(WTF::RunLoop::MayBlock) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#4  0x00007f350fd3696e in WTF::RunLoop::cycle(unsigned int) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#5  0x00007f3515cafef7 in WebCore::PageDebugger::runEventLoopWhilePaused() () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libwebkitgtk-6.0.so.4
#6  0x00007f350e61f115 in JSC::Debugger::handlePause(JSC::JSGlobalObject*) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#7  0x00007f350e6289fb in JSC::Debugger::pauseIfNeeded(JSC::JSGlobalObject*) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#8  0x00007f350e628f3b in JSC::Debugger::updateCallFrame(JSC::JSGlobalObject*, JSC::CallFrame*, JSC::Debugger::CallFrameUpdateAction) [clone .part.0] () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#9  0x00007f350e6292d2 in JSC::Debugger::didReachDebuggerStatement(JSC::CallFrame*) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#10 0x00007f350ee6fea0 in JSC::Interpreter::debug(JSC::CallFrame*, JSC::DebugHookType, JSC::JSValue) () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#11 0x00007f350f03ffa1 in llint_slow_path_debug () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#12 0x00007f350e11ccc1 in llint_op_debug () at /home/buildbot-worker/GTK-Linux-64-bit-Release-Build/build/WebKitBuild/GTK/Release/lib/libjavascriptcoregtk-6.0.so.1
#13 0x0000000000000000 in ??? ()

[Claudio Saavedra]

Gardened in https://commits.webkit.org/303745@main

[Fujii Hironori]

Pull request: https://github.com/WebKit/WebKit/pull/56326

[EWS]

Committed 305838@main (7216ac5e37b8): <https://commits.webkit.org/305838@main>

Reviewed commits have been landed. Closing PR #56326 and removing active labels.

[Fujii Hironori]

Oh, no. Still failing. Bug, it became flaky crash. Reopened.

https://results.webkit.org/?suite=layout-tests&test=inspector%2Fdebugger%2Fasync-stack-trace-truncate.html&style=debug&platform=GTK&platform=WPE

https://build.webkit.org/results/GTK-Linux-64-bit-Debug-Tests/305844@main%20(17908)/inspector/debugger/async-stack-trace-truncate-stderr.txt

VM 0x7f2d4a400000 on pid 3734277 received NeedDebuggerBreak trap
ASSERTION FAILED: !m_isUpdatingRendering
../../../Source/WebKit/WebProcess/WebPage/CoordinatedGraphics/LayerTreeHost.cpp(187) : void WebKit::LayerTreeHost::updateRendering()
1   0x7f2d7601224d WebKit::LayerTreeHost::updateRendering()
2   0x7f2d7601275c WebKit::LayerTreeHost::renderingUpdateRunLoopObserverFired()
3   0x7f2d76011743 operator()
4   0x7f2d7603a460 call
5   0x7f2d73247893 WTF::Function<void ()>::operator()() const
6   0x7f2d7c428d33 WebCore::RunLoopObserver::runLoopObserverFired()
7   0x7f2d7c5a6a1f operator()
8   0x7f2d7c5b04d2 call
9   0x7f2d61785e6f WTF::Function<void ()>::operator()() const
10  0x7f2d635dcecc WTF::ActivityObserver::notify()
11  0x7f2d635de577 WTF::RunLoop::notifyActivity(WTF::RunLoop::Activity)
12  0x7f2d635ddbb1 WTF::RunLoop::runGLibMainLoopIteration(WTF::RunLoop::MayBlock)
13  0x7f2d635ddf6f WTF::RunLoop::cycle(unsigned int)
14  0x7f2d7b9b9ba6 WebCore::PageDebugger::platformShouldContinueRunningEventLoopWhilePaused()
15  0x7f2d7b9b9736 WebCore::PageDebugger::runEventLoopWhilePausedInternal()
16  0x7f2d7b9b96dc WebCore::PageDebugger::runEventLoopWhilePaused()
17  0x7f2d611155a8 JSC::Debugger::handlePause(JSC::JSGlobalObject*)
18  0x7f2d611152bc JSC::Debugger::pauseIfNeeded(JSC::JSGlobalObject*)
19  0x7f2d611143c6 JSC::Debugger::updateCallFrame(JSC::JSGlobalObject*, JSC::CallFrame*, JSC::Debugger::CallFrameUpdateAction)
20  0x7f2d611168bf JSC::Debugger::didReachDebuggerStatement(JSC::CallFrame*)
21  0x7f2d61ffce8c JSC::Interpreter::debug(JSC::CallFrame*, JSC::DebugHookType, JSC::JSValue)
22  0x7f2d621def0e llint_slow_path_debug
23  0x7f2d6078a742 llint_op_debug
WebKitWebProcess terminated (pid 3734277) for reason: crash