[Webkit-unassigned] [Bug 68314] New: REGRESSION: Hang at ADC dev forums
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Sat Sep 17 12:23:33 PDT 2011
https://bugs.webkit.org/show_bug.cgi?id=68314
Summary: REGRESSION: Hang at ADC dev forums
Product: WebKit
Version: 528+ (Nightly build)
Platform: Macintosh Intel
URL: https://devforums.apple.com/thread/122941?tstart=0
OS/Version: Mac OS X 10.7
Status: UNCONFIRMED
Severity: Major
Priority: P1
Component: New Bugs
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jon at jonshier.com
When attempting to load the thread in the URL, Safari's WebProcess will hang with 100% CPU usage on a single core. This is on Lion, Safari 5.1. Change seems to have occurred between r95201 and r95358. Here is a sample from the process. Perhaps the issue is in WebCore::RenderLayer?
Call graph:
2553 Thread_666882 DispatchQueue_1: com.apple.main-thread (serial)
+ 2553 start (in WebProcess) + 52 [0x103897d64]
+ 2553 main (in WebProcess) + 234 [0x103897e56]
+ 2553 WebKitMain (in WebKit2) + 268 [0x103a3797c]
+ 2553 WebKit::WebProcessMain(WebKit::CommandLine const&) (in WebKit2) + 587 [0x103a62bf9]
+ 2553 RunLoop::run() (in WebKit2) + 125 [0x103a1cf2b]
+ 2553 -[NSApplication run] (in AppKit) + 470 [0x7fff8c9cd5bd]
+ 2553 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] (in AppKit) + 135 [0x7fff8c9d0c85]
+ 2553 _DPSNextEvent (in AppKit) + 659 [0x7fff8c9d1381]
+ 2553 BlockUntilNextEventMatchingListInMode (in HIToolbox) + 62 [0x7fff8a0444ca]
+ 2553 ReceiveNextEventCommon (in HIToolbox) + 355 [0x7fff8a04463d]
+ 2553 RunCurrentEventLoopInMode (in HIToolbox) + 277 [0x7fff8a03d3d3]
+ 2553 CFRunLoopRunSpecific (in CoreFoundation) + 230 [0x7fff90560c16]
+ 2553 __CFRunLoopRun (in CoreFoundation) + 1617 [0x7fff905615a1]
+ 2553 __CFRunLoopDoTimer (in CoreFoundation) + 534 [0x7fff90580c36]
+ 2553 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ (in CoreFoundation) + 20 [0x7fff905810e4]
+ 2553 RunLoop::TimerBase::timerFired(__CFRunLoopTimer*, void*) (in WebKit2) + 77 [0x103a1cd85]
+ 2553 WebKit::DrawingAreaImpl::display() (in WebKit2) + 189 [0x103ad5ebb]
+ 2553 WebKit::DrawingAreaImpl::display(WebKit::UpdateInfo&) (in WebKit2) + 1000 [0x103ad595e]
+ 2553 WebKit::WebPage::drawRect(WebCore::GraphicsContext&, WebCore::IntRect const&) (in WebKit2) + 145 [0x103a3c15f]
+ 2553 WebCore::ScrollView::paint(WebCore::GraphicsContext*, WebCore::IntRect const&) (in WebCore) + 559 [0x1048d01f1]
+ 2553 WebCore::FrameView::paintContents(WebCore::GraphicsContext*, WebCore::IntRect const&) (in WebCore) + 624 [0x1042b8090]
+ 2553 WebCore::RenderLayer::paint(WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*) (in WebCore) + 71 [0x1047fa661]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 4159 [0x1047f98fb]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 4159 [0x1047f98fb]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 4159 [0x1047f98fb]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 4159 [0x1047f98fb]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 4159 [0x1047f98fb]
+ 2553 WebCore::RenderLayer::paintLayer(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, unsigned int, WebCore::RenderObject*, WTF::HashMap<WebCore::OverlapTestRequestClient*, WebCore::IntRect, WTF::PtrHash<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::OverlapTestRequestClient*>, WTF::HashTraits<WebCore::IntRect> >*, unsigned int) (in WebCore) + 2682 [0x1047f9336]
+ 1671 WebCore::RenderLayer::clipToRect(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, WebCore::ClipRect const&, WebCore::BorderRadiusClippingRule) (in WebCore) + 215 [0x1047f50c9]
+ ! 1671 WebCore::RenderView::containingBlock() const (in WebCore) + 0,7 [0x10488ba60,0x10488ba67]
+ 882 WebCore::RenderLayer::clipToRect(WebCore::RenderLayer*, WebCore::GraphicsContext*, WebCore::IntRect const&, WebCore::ClipRect const&, WebCore::BorderRadiusClippingRule) (in WebCore) + 206,215 [0x1047f50c0,0x1047f50c9]
2553 Thread_666888 DispatchQueue_2: com.apple.libdispatch-manager (serial)
+ 2553 _dispatch_mgr_thread (in libdispatch.dylib) + 54 [0x7fff8be6a14e]
+ 2553 _dispatch_mgr_invoke (in libdispatch.dylib) + 923 [0x7fff8be6b5be]
+ 2553 kevent (in libsystem_kernel.dylib) + 10 [0x7fff897ea7e6]
2553 Thread_667020: JavaScriptCore::BlockFree
+ 2553 thread_start (in libsystem_c.dylib) + 13 [0x7fff8ed15b75]
+ 2553 _pthread_start (in libsystem_c.dylib) + 335 [0x7fff8ed128bf]
+ 2553 JSC::Heap::blockFreeingThreadStartFunc(void*) (in JavaScriptCore) + 9 [0x103f0c769]
+ 2553 JSC::Heap::blockFreeingThreadMain() (in JavaScriptCore) + 300 [0x103f0c72c]
+ 2553 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) (in JavaScriptCore) + 151 [0x103ed9387]
+ 2553 _pthread_cond_wait (in libsystem_c.dylib) + 840 [0x7fff8ed16274]
+ 2553 __psynch_cvwait (in libsystem_kernel.dylib) + 10 [0x7fff897e9bca]
2553 Thread_667021: com.apple.NSURLConnectionLoader
+ 2553 thread_start (in libsystem_c.dylib) + 13 [0x7fff8ed15b75]
+ 2553 _pthread_start (in libsystem_c.dylib) + 335 [0x7fff8ed128bf]
+ 2553 __NSThread__main__ (in Foundation) + 1575 [0x7fff87b51e9e]
+ 2553 -[NSThread main] (in Foundation) + 68 [0x7fff87b51f26]
+ 2553 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] (in Foundation) + 335 [0x7fff87b5d7d3]
+ 2553 CFRunLoopRunSpecific (in CoreFoundation) + 230 [0x7fff90560c16]
+ 2553 __CFRunLoopRun (in CoreFoundation) + 1204 [0x7fff90561404]
+ 2553 __CFRunLoopServiceMachPort (in CoreFoundation) + 188 [0x7fff90558c9c]
+ 2553 mach_msg (in libsystem_kernel.dylib) + 73 [0x7fff897e7d71]
+ 2553 mach_msg_trap (in libsystem_kernel.dylib) + 10 [0x7fff897e867a]
2553 Thread_667286: com.apple.CFSocket.private
2553 thread_start (in libsystem_c.dylib) + 13 [0x7fff8ed15b75]
2553 _pthread_start (in libsystem_c.dylib) + 335 [0x7fff8ed128bf]
2553 __CFSocketManager (in CoreFoundation) + 1355 [0x7fff905aa13b]
2553 __select (in libsystem_kernel.dylib) + 10 [0x7fff897e9df2]
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