[Webkit-unassigned] [Bug 80995] New: [chromium] Threaded compositor locks up when switching tabs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=80995

           Summary: [chromium] Threaded compositor locks up when switching
                    tabs
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: husky at google.com


I'm hitting this a lot with my dev build. To reproduce, launch the browser, then quickly open several tabs from the new tab page with middle-click or ctrl-click. Switch back and forth through the tabs as they're loading.

Usually, several tabs will lock up. Looks like a deadlock in CCThreadProxy::beginFrame:

#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff24ed678 in WTF::ThreadCondition::wait (this=0x7fffffffcb48, 
    mutex=...)
    at third_party/WebKit/Source/JavaScriptCore/wtf/ThreadingPthreads.cpp:394
#2  0x00007ffff291da9c in WebCore::CCCompletionEvent::wait (
    this=0x7fffffffcb20)
    at third_party/WebKit/Source/WebCore/platform/graphics/chromium/cc/CCCompletionEvent.h:60
#3  0x00007ffff291ba99 in WebCore::CCThreadProxy::beginFrame (
    this=0x7fffef7a5180)
    at third_party/WebKit/Source/WebCore/platform/graphics/chromium/cc/CCThreadProxy.cpp:464
#4  0x00007ffff292166e in WebCore::CCThreadTask0<WebCore::CCThreadProxy>::performTask (this=0x7fffe22828a0)
    at third_party/WebKit/Source/WebCore/platform/graphics/chromium/cc/CCThreadTask.h:55
#5  0x00007ffff291e15b in WebCore::CCScopedThreadProxy::runTaskIfNotShutdown (
    this=0x7fffe221b980, popTask=...)
    at third_party/WebKit/Source/WebCore/platform/graphics/chromium/cc/CCScopedThreadProxy.h:82
#6  0x00007ffff2921a1b in WebCore::CCThreadTask1<WebCore::CCScopedThreadProxy, WTF::PassOwnPtr<WebCore::CCThread::Task>, WTF::PassOwnPtr<WebCore::CCThread::Task> >::performTask (this=0x7fffe226f210)
    at third_party/WebKit/Source/WebCore/platform/graphics/chromium/cc/CCThreadTask.h:84
#7  0x00007ffff4587277 in WebKit::CCThreadTaskAdapter::run (
    this=0x7fffef801c00)
    at third_party/WebKit/Source/WebKit/chromium/src/CCThreadImpl.cpp:72
#8  0x00007ffff37563d3 in base::internal::RunnableAdapter<void (WebKit::WebThread::Task::*)()>::Run (this=0x7fffffffcca0, object=0x7fffef801c00)
    at ./base/bind_internal.h:132
#9  0x00007ffff3756290 in base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (WebKit::WebThread::Task::*)()>, void (WebKit::WebThread::Task*)>::MakeItSo(base::internal::RunnableAdapter<void (WebKit::WebThread::Task::*)()>, WebKit::WebThread::Task*) (runnable=..., a1=0x7fffef801c00)
    at ./base/bind_internal.h:868
#10 0x00007ffff37560ad in base::internal::Invoker<1, base::internal::BindState<base::internal::RunnableAdapter<void (WebKit::WebThread::Task::*)()>, void (WebKit::WebThread::Task*), void (base::internal::OwnedWrapper<WebKit::WebThread::Task>)>, void (WebKit::WebThread::Task*)>::Run(base::internal::BindStateBase*) (
    base=0x7fffe226f1e0) at ./base/bind_internal.h:1170
#11 0x00007ffff0bd2077 in base::Callback<void ()>::Run() const (
    this=0x7fffffffcfc8) at ./base/callback.h:272
#12 0x00007ffff1471aa4 in MessageLoop::RunTask (this=0x7fffffffd8c0, 
    pending_task=...) at base/message_loop.cc:458
#13 0x00007ffff1471bbb in MessageLoop::DeferOrRunPendingTask (
    this=0x7fffffffd8c0, pending_task=...) at base/message_loop.cc:470
#14 0x00007ffff14723dd in MessageLoop::DoWork (this=0x7fffffffd8c0)
    at base/message_loop.cc:660
#15 0x00007ffff147a0b0 in base::MessagePumpDefault::Run (this=0x7fffef7dc4b0, 
    delegate=0x7fffffffd8c0) at base/message_pump_default.cc:28
#16 0x00007ffff147176b in MessageLoop::RunInternal (this=0x7fffffffd8c0)
    at base/message_loop.cc:417
#17 0x00007ffff147161e in MessageLoop::RunHandler (this=0x7fffffffd8c0)
    at base/message_loop.cc:390
#18 0x00007ffff1470f53 in MessageLoop::Run (this=0x7fffffffd8c0)
    at base/message_loop.cc:300
#19 0x00007ffff408f4f2 in RendererMain (parameters=...)
    at content/renderer/renderer_main.cc:241
#20 0x00007ffff14034ea in (anonymous namespace)::RunNamedProcessTypeMain (
    process_type="renderer", main_function_params=..., delegate=0x7fffffffe100)
    at content/app/content_main_runner.cc:282
#21 0x00007ffff1403d60 in (anonymous namespace)::ContentMainRunnerImpl::Run (
    this=0x7fffef7b1de0) at content/app/content_main_runner.cc:511
#22 0x00007ffff1402c75 in content::ContentMain (argc=8, argv=0x7fffffffe268, 
    delegate=0x7fffffffe100) at content/app/content_main.cc:35
#23 0x00007ffff06321ad in ChromeMain (argc=8, argv=0x7fffffffe268)
    at chrome/app/chrome_main.cc:32
#24 0x00007ffff063216c in main (argc=8, argv=0x7fffffffe268)
    at chrome/app/chrome_exe_main_gtk.cc:18

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