Sample output: Analysis of sampling pid 1700 every 10.000000 milliseconds Call graph: 12177 Thread_0f17 12177 0x56e28 12177 0x21e8 12177 NSApplicationMain 12177 -[NSApplication run] 12177 0x6bbc 12177 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] 12177 _DPSNextEvent 12177 BlockUntilNextEventMatchingListInMode 12177 ReceiveNextEventCommon 12177 RunCurrentEventLoopInMode 12177 CFRunLoopRunSpecific 12177 __CFRunLoopRun 12177 __CFRunLoopDoTimer 12177 __NSFireTimer 12177 CFSetRemoveAllValues 12177 _CFRelease 12177 __CFDictionaryDeallocate 12177 -[KWQPageState dealloc] 12177 DOM::DocumentImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::ContainerNodeImpl::detach() 12177 DOM::NodeImpl::detach() 12177 khtml::RenderWidget::detach() 12177 khtml::RenderObject::arenaDelete(RenderArena*, void*) 12177 khtml::RenderPartObject::~RenderPartObject [in- charge deleting]() 12177 khtml::RenderPart::~RenderPart [not-in-charge]() 12177 KHTMLView::~KHTMLView [in-charge deleting]() 12177 KHTMLViewPrivate::~KHTMLViewPrivate [in-charge] () 12177 DOM::KDOMNodeTreeWrapperImpl::~KDOMNodeTreeWrapperImpl [in-charge deleting]() 12177 KSVG::SVGDocumentImpl::~SVGDocumentImpl [in-charge deleting]() 12177 KDOM::DocumentImpl::~DocumentImpl [not- in-charge]() 12177 KDOM::DocumentLoader::~DocumentLoader [in-charge]() 12177 KDOM::Loader::cancelRequests (KDOM::DocumentLoader*) 12177 KWQListImpl::remove(bool) 12177 QPtrList<KDOM::Request>::deleteFunc (void*) 12177 KDOM::Request::~Request [in-charge]() 12177 KDOM::CachedObject::setRequest (KDOM::Request*) 12177 KDOM::CachedObject::allowInLRUList() const 12177 KDOM::CachedObject::canDelete() const 12177 objc_msgSend_rtp 12177 objc_msgSend_rtp 12177 Thread_1003 12177 _pthread_body 12177 forkThreadForFunction 12177 +[WebFileDatabase _syncLoop:] 12177 -[NSRunLoop run] 12177 -[NSRunLoop runMode:beforeDate:] 12177 CFRunLoopRunSpecific 12177 __CFRunLoopRun 12177 mach_msg 12177 mach_msg_trap 12177 mach_msg_trap 12177 Thread_1103 12177 _pthread_body 12177 forkThreadForFunction 12177 +[NSURLConnection(NSURLConnectionInternal) _resourceLoadLoop:] 12177 CFRunLoopRunSpecific 12177 __CFRunLoopRun 12177 mach_msg 12177 mach_msg_trap 12177 mach_msg_trap 12177 Thread_1203 12177 _pthread_body 12177 forkThreadForFunction 12177 +[NSURLCache _diskCacheSyncLoop:] 12177 CFRunLoopRunSpecific 12177 __CFRunLoopRun 12177 mach_msg 12177 mach_msg_trap 12177 mach_msg_trap 12177 Thread_1303 12177 _pthread_body 12177 forkThreadForFunction 12177 -[AsyncDB _run:] 12177 -[NSConditionLock lockWhenCondition:] 12177 pthread_cond_wait 12177 semaphore_wait_signal_trap 12177 semaphore_wait_signal_trap 12177 Thread_1403 12177 _pthread_body 12177 __CFSocketManager 12177 select 12177 select 12177 Thread_1503 12177 _pthread_body 12177 forkThreadForFunction 12177 -[NSUIHeartBeat _heartBeatThread:] 12177 -[NSConditionLock lockWhenCondition:] 12177 pthread_cond_wait 12177 semaphore_wait_signal_trap 12177 semaphore_wait_signal_trap 12177 Thread_1603 12177 _pthread_body 12177 forkThreadForFunction 12177 0x3593c 12177 -[NSRunLoop run] 12177 -[NSRunLoop runMode:beforeDate:] 12177 CFRunLoopRunSpecific 12177 __CFRunLoopRun 12177 mach_msg 12177 mach_msg_trap 12177 mach_msg_trap Total number in stack (recursive counted multiple, when >=5): 7 DOM::ContainerNodeImpl::detach() 7 _pthread_body 6 forkThreadForFunction 5 CFRunLoopRunSpecific 5 __CFRunLoopRun Sort by top of stack, same collapsed (when >= 5): mach_msg_trap 48708 semaphore_wait_signal_trap 24354 objc_msgSend_rtp 12177 select 12177
Created attachment 4160 [details] sample for the freeze
Created attachment 4161 [details] Patch to fix this hang/crash.
Surprising this hangs instead of crashing, but r=me