81012 – Assertion failure in PlatformPasteboardMac constructor causing multiple tests to "crash" on the Lion Intel WebKit2 Debug bots

Jessie Berlin

Reported 2012-03-13 11:03:41 PDT

I am not sure when it regressed, since it appears to be happening for at least last 200 builds: http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r110578%20(4851)/editing/execCommand/4128080-2-crash-log.txt http://build.webkit.org/old-results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r110129%20(4652)/editing/execCommand/4128080-2-crash-log.txt Here is a sample log: http://build.webkit.org/results/Lion%20Intel%20Debug%20(WebKit2%20Tests)/r110566%20(4846)/editing/execCommand/copy-without-selection-crash-log.txt Process: WebKitTestRunner [18527] Path: /Volumes/VOLUME/*/WebKitTestRunner Identifier: WebKitTestRunner Version: ??? (???) Code Type: X86-64 (Native) Parent Process: Python [18327] Date/Time: 2012-03-13 08:55:12.652 -0700 OS Version: Mac OS X 10.7.2 (11C74) Report Version: 9 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x00000000bbadbeef VM Regions Near 0xbbadbeef: --> __TEXT 0000000108eba000-0000000108ed0000 [ 88K] r-x/rwx SM=COW /Volumes/VOLUME/* Application Specific Information: objc[18527]: garbage collection is OFF Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 com.apple.WebCore 0x000000010c271d31 WebCore::PlatformPasteboard::PlatformPasteboard(WTF::String const&) + 177 (PlatformPasteboardMac.mm:35) 1 com.apple.WebCore 0x000000010c271c6d WebCore::PlatformPasteboard::PlatformPasteboard(WTF::String const&) + 29 (PlatformPasteboardMac.mm:36) 2 com.apple.WebKit2 0x000000010909b378 WebKit::WebContext::getPasteboardChangeCount(WTF::String const&, unsigned long long&) + 40 (WebContextMac.mm:193) 3 com.apple.WebKit2 0x00000001090a49ef void CoreIPC::callMemberFunction<WebKit::WebContext, void (WebKit::WebContext::*)(WTF::String const&, unsigned long long&), WTF::String, unsigned long long>(CoreIPC::Arguments1<WTF::String> const&, CoreIPC::Arguments1<unsigned long long>&, WebKit::WebContext*, void (WebKit::WebContext::*)(WTF::String const&, unsigned long long&)) + 143 (HandleMessage.h:94) 4 com.apple.WebKit2 0x00000001090a4581 void CoreIPC::handleMessage<Messages::WebContext::GetPasteboardChangeCount, WebKit::WebContext, void (WebKit::WebContext::*)(WTF::String const&, unsigned long long&)>(CoreIPC::ArgumentDecoder*, CoreIPC::ArgumentEncoder*, WebKit::WebContext*, void (WebKit::WebContext::*)(WTF::String const&, unsigned long long&)) + 161 (HandleMessage.h:308) 5 com.apple.WebKit2 0x00000001090a35e7 WebKit::WebContext::didReceiveSyncWebContextMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, WTF::OwnPtr<CoreIPC::ArgumentEncoder>&) + 647 (WebContextMessageReceiver.cpp:143) 6 com.apple.WebKit2 0x0000000109086453 WebKit::WebContext::didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, WTF::OwnPtr<CoreIPC::ArgumentEncoder>&) + 99 (WebContext.cpp:741) 7 com.apple.WebKit2 0x0000000109203f87 WebKit::WebProcessProxy::didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, WTF::OwnPtr<CoreIPC::ArgumentEncoder>&) + 215 (WebProcessProxy.cpp:344) 8 com.apple.WebKit2 0x000000010907e9ed WebKit::WebConnectionToWebProcess::didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, WTF::OwnPtr<CoreIPC::ArgumentEncoder>&) + 93 (WebConnectionToWebProcess.cpp:98) 9 com.apple.WebKit2 0x000000010907ea45 non-virtual thunk to WebKit::WebConnectionToWebProcess::didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID, CoreIPC::ArgumentDecoder*, WTF::OwnPtr<CoreIPC::ArgumentEncoder>&) + 69 10 com.apple.WebKit2 0x0000000108f1d961 CoreIPC::Connection::dispatchSyncMessage(CoreIPC::MessageID, CoreIPC::ArgumentDecoder*) + 289 (Connection.cpp:650) 11 com.apple.WebKit2 0x0000000108f1af38 CoreIPC::Connection::dispatchMessage(CoreIPC::Connection::Message<CoreIPC::ArgumentDecoder>&) + 328 (Connection.cpp:690) 12 com.apple.WebKit2 0x0000000108f1adc5 CoreIPC::Connection::SyncMessageState::dispatchMessages() + 277 (Connection.cpp:167) 13 com.apple.WebKit2 0x0000000108f1ac9e CoreIPC::Connection::SyncMessageState::dispatchMessageAndResetDidScheduleDispatchMessagesWork() + 158 (Connection.cpp:182) 14 com.apple.WebKit2 0x0000000108f27190 WTF::FunctionWrapper<void (CoreIPC::Connection::SyncMessageState::*)()>::operator()(CoreIPC::Connection::SyncMessageState*) + 112 (Functional.h:173) 15 com.apple.WebKit2 0x0000000108f27115 WTF::BoundFunctionImpl<WTF::FunctionWrapper<void (CoreIPC::Connection::SyncMessageState::*)()>, void ()(CoreIPC::Connection::SyncMessageState*)>::operator()() + 53 (Functional.h:373) 16 com.apple.WebCore 0x000000010c57592d WTF::Function<void ()()>::operator()() const + 141 (Functional.h:581) 17 com.apple.WebCore 0x000000010c5756b3 WebCore::RunLoop::performWork() + 147 (RunLoop.cpp:66) 18 com.apple.WebCore 0x000000010c576ad0 WebCore::RunLoop::performWork(void*) + 96 (RunLoopMac.mm:65) 19 com.apple.CoreFoundation 0x00007fff875e2b51 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 20 com.apple.CoreFoundation 0x00007fff875e23bd __CFRunLoopDoSources0 + 253 21 com.apple.CoreFoundation 0x00007fff876091a9 __CFRunLoopRun + 905 22 com.apple.CoreFoundation 0x00007fff87608ae6 CFRunLoopRunSpecific + 230 23 com.apple.Foundation 0x00007fff80f4e04f -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 267 24 WebKitTestRunner 0x0000000108ec4ddc WTR::TestController::platformRunUntil(bool&, double) + 204 (TestControllerMac.mm:60) 25 WebKitTestRunner 0x0000000108ec06f5 WTR::TestController::runUntil(bool&, WTR::TestController::TimeoutDuration) + 149 (TestController.cpp:563) 26 WebKitTestRunner 0x0000000108ec5b64 WTR::TestInvocation::invoke() + 1396 (TestInvocation.cpp:171) 27 WebKitTestRunner 0x0000000108ec0d78 WTR::TestController::runTest(char const*) + 1656 (TestController.cpp:513) 28 WebKitTestRunner 0x0000000108ec0e82 WTR::TestController::runTestingServerLoop() + 178 (TestController.cpp:529) 29 WebKitTestRunner 0x0000000108ebf500 WTR::TestController::run() + 48 (TestController.cpp:537) 30 WebKitTestRunner 0x0000000108ebe1c6 WTR::TestController::TestController(int, char const**) + 614 (TestController.cpp:88) 31 WebKitTestRunner 0x0000000108ebdf53 WTR::TestController::TestController(int, char const**) + 35 (TestController.cpp:89) 32 WebKitTestRunner 0x0000000108ebbeaf main + 143 (main.mm:36) 33 WebKitTestRunner 0x0000000108ebbe14 start + 52

Radar WebKit Bug Importer

Comment 1 2012-03-13 11:08:08 PDT

<rdar://problem/11039295>

Jessie Berlin

Comment 2 2012-03-13 14:10:26 PDT

Killing the pasteboard server seemed to fix the crash on at least one of the Mac Lion Debug WK2 testers. Enrica and I were unable to reproduce these crashes locally. We think that some other tests crashing might be leaving the system / pasteboard in a weird state. Hopefully we can fix more of the other test crashes soon so we don't get into this state again. I am going to kill the pasteboard server on all the affected bots. If we see this crash come back, it might be worth adding a build step to kill the pasteboard server.

Jessie Berlin

Comment 3 2012-03-23 09:15:55 PDT

Added a step to kill the pasteboard server in http://trac.webkit.org/changeset/111866. Hopefully this will remove the need for us to continually ssh into the affected bots and kill it manually until we can figure out what the underlying issue (and fix) is.

Ryosuke Niwa

Comment 4 2012-05-25 00:09:55 PDT

Does this bug still exist?

Jessie Berlin

Comment 5 2012-05-25 08:46:35 PDT

(In reply to comment #4) > Does this bug still exist? Until someone has the time to take out the kill step added in http://trac.webkit.org/changeset/111866 and actually debug the issue, we need to keep this bug open. AFAIK, nothing has changed (other than adding the kill step) that should have caused the issue to disappear.

Aakash Jain

Comment 6 2015-12-18 10:08:08 PST

reverted this in https://bugs.webkit.org/show_bug.cgi?id=152426