[Webkit-unassigned] [Bug 52425] New: Hang occurs when loading content at http://news.yahoo.com/s/ap/20110114/ap_on_bi_ge/as_japan_politics
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Thu Jan 13 22:36:56 PST 2011
https://bugs.webkit.org/show_bug.cgi?id=52425
Summary: Hang occurs when loading content at
http://news.yahoo.com/s/ap/20110114/ap_on_bi_ge/as_jap
an_politics
Product: WebKit
Version: 528+ (Nightly build)
Platform: Macintosh
URL: http://news.yahoo.com/s/ap/20110114/ap_on_bi_ge/as_jap
an_politics
OS/Version: Mac OS X 10.6
Status: NEW
Severity: Major
Priority: P1
Component: Page Loading
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: cpetersen at apple.com
Steps to Reproduce:
1) Launch TOT webkit build (r75767) on 10.6.6
2) Go to http://news.yahoo.com/s/ap/20110114/ap_on_bi_ge/as_japan_politics
3) After the page loads, a hang occurs. This page does contain some flash based ads which appear to trigger a hang. Here is a sample of TOT:
Sampling process 12272 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling Safari (pid 12272) every 1 millisecond
Call graph:
2370 Thread_26647 DispatchQueue_1: com.apple.main-thread (serial)
2370 0x10000a1c0
2370 NSApplicationMain
2370 -[NSApplication run]
2370 0x1000162f4
2370 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:]
2370 _DPSNextEvent
2370 BlockUntilNextEventMatchingListInMode
2370 ReceiveNextEventCommon
2370 RunCurrentEventLoopInMode
2370 CFRunLoopRunSpecific
2370 __CFRunLoopRun
2370 __NSFireTimer
2370 0x100045d97
2370 0x100045ed6
2370 0x10004642e
2370 0x1000465eb
2370 0x1000468e6
2370 0x100046bcc
2370 -[NSView displayRectIgnoringOpacity:inContext:]
2370 -[WebHTMLView(WebPrivate) _recursive:displayRectIgnoringOpacity:inContext:topView:]
2370 -[NSView(NSInternal) _recursive:displayRectIgnoringOpacity:inContext:topView:]
2370 -[WebHTMLView drawRect:]
2370 -[WebHTMLView drawSingleRect:]
2370 -[WebFrame(WebInternal) _drawRect:contentsOnly:]
2370 WebCore::FrameView::paintContents(WebCore::GraphicsContext*, WebCore::IntRect const&)
2370 WebCore::FrameView::notifyWidgetsInAllFrames(WebCore::WidgetNotification)
2370 WebCore::RenderView::notifyWidgets(WebCore::WidgetNotification)
2370 NetscapePluginWidget::notifyWidget(WebCore::WidgetNotification)
2370 -[WebBaseNetscapePluginView cacheSnapshot]
2370 -[WebHostedNetscapePluginView drawRect:]
2370 WebKit::NetscapePluginInstanceProxy::snapshot(CGContext*, unsigned int, unsigned int)
2370 WebKit::NetscapePluginInstanceProxy::processRequestsAndWaitForReply(unsigned int)
2370 WebKit::NetscapePluginHostProxy::processRequests()
2370 mach_msg
2370 mach_msg_trap
2370 Thread_26649 DispatchQueue_2: com.apple.libdispatch-manager (serial)
2370 start_wqthread
2370 _pthread_wqthread
2370 _dispatch_worker_thread2
2370 _dispatch_queue_invoke
2370 _dispatch_mgr_invoke
2369 kevent
1 _dispatch_run_timers
1 _dispatch_timer_list_update
2370 Thread_26662: WebCore: IconDatabase
2370 thread_start
2370 _pthread_start
2370 WebCore::IconDatabase::iconDatabaseSyncThread()
2370 WebCore::IconDatabase::syncThreadMainLoop()
2370 _pthread_cond_wait
2370 __semwait_signal
2370 Thread_26668: Safari: SafeBrowsingManager
2370 thread_start
2370 _pthread_start
2370 0x10002f829
2370 0x10002f899
2370 CFRunLoopRunSpecific
2370 __CFRunLoopRun
2370 mach_msg
2370 mach_msg_trap
2370 Thread_26670
2370 thread_start
2370 _pthread_start
2370 __NSThread__main__
2370 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:]
2370 CFRunLoopRunSpecific
2370 __CFRunLoopRun
2370 mach_msg
2370 mach_msg_trap
2370 Thread_26672: com.apple.CFSocket.private
2370 thread_start
2370 _pthread_start
2370 __CFSocketManager
2370 select$DARWIN_EXTSN
2370 Thread_26692: Safari: SnapshotStore
2370 thread_start
2370 _pthread_start
2370 0x1000471f9
2370 0x10004737b
2370 0x1001be869
2370 WTF::ThreadCondition::timedWait(WTF::Mutex&, double)
2370 _pthread_cond_wait
2370 __semwait_signal
2370 Thread_26723
2370 thread_start
2370 _pthread_start
2370 thread_fun
2370 CA::Render::Server::server_thread(void*)
2370 mach_msg
2370 mach_msg_trap
2370 Thread_26896: WebCore: LocalStorage
2370 thread_start
2370 _pthread_start
2370 WebCore::LocalStorageThread::threadEntryPoint()
2370 WTF::ThreadCondition::timedWait(WTF::Mutex&, double)
2370 _pthread_cond_wait
2370 __semwait_signal
2370 Thread_26916
2370 thread_start
2370 _pthread_start
2370 startIOThread(void*)
2370 CVDisplayLink::runIOThread()
2370 _pthread_cond_wait
2370 __semwait_signal
2370 Thread_26918: Safari: SpinningProgressIndicator
2370 thread_start
2370 _pthread_start
2370 __NSThread__main__
2370 0x10009032b
2370 -[NSRunLoop(NSRunLoop) run]
2370 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
2370 CFRunLoopRunSpecific
2370 __CFRunLoopRun
2364 mach_msg
2364 mach_msg_trap
6 __NSFireTimer
3 0x10009098e
3 0x100090ce0
3 0x10008f7c0
3 -[NSImage compositeToPoint:operation:]
3 -[NSImage _composite:delta:fromRect:toPoint:]
3 -[NSImage drawInRect:fromRect:operation:fraction:respectFlipped:hints:]
3 -[NSImage _usingBestRepresentationForRect:context:hints:body:]
2 __-[NSImage drawInRect:fromRect:operation:fraction:respectFlipped:hints:]_block_invoke_1
2 -[NSImageRep drawInRect:fromRect:operation:fraction:respectFlipped:hints:]
2 __-[NSImageRep drawInRect:fromRect:operation:fraction:respectFlipped:hints:]_block_invoke_1
2 CGContextDrawImage
2 ripc_DrawImage
2 ripc_AcquireImage
2 CGSImageDataLock
2 img_data_lock
1 CGColorSpaceGetNumberOfComponents
1 malloc
1 malloc_zone_malloc
1 szone_malloc_should_clear
1 -[NSImage bestRepresentationForRect:context:hints:]
1 -[NSImage _processedHintsForHints:includeOnlyIfAvailable:]
1 objc_msgSend
2 0x1000909d3
2 ripc_Operation
2 CGSDeviceSynchronize
1 CGSShmemSeedIncrement
1 _CGSFlushRegionInline
1 0x10009089f
1 -[NSCFDictionary keyEnumerator]
1 look_up_class
1 NXMapGet
1 _mapStrHash
2369 Thread_27015
2369 start_wqthread
2369 _pthread_wqthread
2369 __workq_kernreturn
1 Thread_27015 DispatchQueue_12: CFMachPort (serial)
1 start_wqthread
1 _pthread_wqthread
1 _dispatch_worker_thread2
1 _dispatch_queue_invoke
1 _dispatch_queue_drain
1 _dispatch_queue_invoke
1 _dispatch_source_invoke
1 __CFMachPortChecker
1 mach_port_type
1 mach_msg
1 mach_msg_trap
Total number in stack (recursive counted multiple, when >=5):
9 _pthread_start
9 thread_start
6 mach_msg
6 mach_msg_trap
Sort by top of stack, same collapsed (when >= 5):
mach_msg_trap 11845
__semwait_signal 9480
select$DARWIN_EXTSN 2370
__workq_kernreturn 2369
kevent 2369
Sample analysis of process 12272 written to file /dev/stdout
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