http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&tests=inspector%2Fprofiler%2Fcpu-profiler-profile-removal.html It appears to have started around http://trac.webkit.org/changeset/146518.
e.g. http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r146567%20(8064)/results.html Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x00000000bbadbeef VM Regions Near 0xbbadbeef: --> __TEXT 0000000108fa2000-0000000108fcf000 [ 180K] r-x/rwx SM=COW /Volumes/VOLUME/* Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebKit2 0x000000010aa423d1 WebKit::WebInspectorProxy::open() + 81 (WebInspectorProxy.cpp:386) 1 com.apple.WebKit2 0x000000010aa43110 WebKit::WebInspectorProxy::bringToFront() + 80 (WebInspectorProxy.cpp:427) 2 com.apple.WebKit2 0x000000010aa51a13 void CoreIPC::callMemberFunction<WebKit::WebInspectorProxy, void (WebKit::WebInspectorProxy::*)()>(CoreIPC::Arguments0 const&, WebKit::WebInspectorProxy*, void (WebKit::WebInspectorProxy::*)()) + 131 (HandleMessage.h:16) 3 com.apple.WebKit2 0x000000010aa51219 void CoreIPC::handleMessage<Messages::WebInspectorProxy::BringToFront, WebKit::WebInspectorProxy, void (WebKit::WebInspectorProxy::*)()>(CoreIPC::MessageDecoder&, WebKit::WebInspectorProxy*, void (WebKit::WebInspectorProxy::*)()) + 105 (HandleMessage.h:341) 4 com.apple.WebKit2 0x000000010aa50c37 WebKit::WebInspectorProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 295 (WebInspectorProxyMessageReceiver.cpp:48) 5 com.apple.WebKit2 0x000000010aa50ff7 non-virtual thunk to WebKit::WebInspectorProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 55 6 com.apple.WebKit2 0x000000010a849097 CoreIPC::MessageReceiverMap::dispatchMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 519 (MessageReceiverMap.cpp:87) 7 com.apple.WebKit2 0x000000010a79b1c7 WebKit::ChildProcessProxy::dispatchMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 55 (ChildProcessProxy.cpp:107) 8 com.apple.WebKit2 0x000000010ab7502a WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 58 (WebProcessProxy.cpp:362) 9 com.apple.WebKit2 0x000000010ab75147 non-virtual thunk to WebKit::WebProcessProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageDecoder&) + 55 10 com.apple.WebKit2 0x000000010a7a30b3 CoreIPC::Connection::dispatchMessage(CoreIPC::MessageDecoder&) + 51 (Connection.cpp:758) 11 com.apple.WebKit2 0x000000010a79f89a CoreIPC::Connection::dispatchMessage(WTF::PassOwnPtr<CoreIPC::MessageDecoder>) + 218 (Connection.cpp:780) 12 com.apple.WebKit2 0x000000010a7a304b CoreIPC::Connection::dispatchOneMessage() + 203 (Connection.cpp:806) 13 com.apple.WebKit2 0x000000010a7ae6c2 WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>::operator()(CoreIPC::Connection*) + 114 (Functional.h:218) 14 com.apple.WebKit2 0x000000010a7ae645 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (CoreIPC::Connection::*)()>, void (CoreIPC::Connection*)>::operator()() + 53 (Functional.h:496) 15 com.apple.WebCore 0x000000010d3e6149 WTF::Function<void ()>::operator()() const + 137 (Functional.h:704) 16 com.apple.WebCore 0x000000010d3e5e0f WebCore::RunLoop::performWork() + 207 (RunLoop.cpp:93) 17 com.apple.WebCore 0x000000010d3e716e WebCore::RunLoop::performWork(void*) + 62 (RunLoopCF.cpp:66) 18 com.apple.CoreFoundation 0x00007fff89badb31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 19 com.apple.CoreFoundation 0x00007fff89bad455 __CFRunLoopDoSources0 + 245 20 com.apple.CoreFoundation 0x00007fff89bd07f5 __CFRunLoopRun + 789
More tests crashing with the same stack trace: http://build.webkit.org/results/Apple%20Lion%20Debug%20WK2%20(Tests)/r146565%20(8279)/results.html
Added test expectations in http://trac.webkit.org/changeset/146574.
Assertion failure. Looking into it.
It seems like this assertion can happen on any inspector test :( e.g. http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK2%20(Tests)/r146647%20(8100)/results.html
*** Bug 114576 has been marked as a duplicate of this bug. ***
<rdar://problem/13673565>
I'm just going to remove this assert. It does not affect normal debug use, only the test harness.
Created attachment 198737 [details] Proposed Change
Comment on attachment 198737 [details] Proposed Change r=me, assuming you tested that this doesn't introduce any flakiness further down the line when running the tests
Comment on attachment 198737 [details] Proposed Change I've only seen the ASSERT on the bots, never locally. So we will see…
Comment on attachment 198737 [details] Proposed Change Clearing flags on attachment: 198737 Committed r148682: <http://trac.webkit.org/changeset/148682>
All reviewed patches have been landed. Closing bug.