128612 2014-02-11 10:41:40 -0800 IndexedDB tests on some bots are flakey (timeouts) 2014-02-11 11:27:13 -0800 1 1 1 Unclassified WebKit WebKit2 528+ (Nightly build) All All RESOLVED FIXED InRadar P2 Normal --- 1 beidson beidson ap webkit-bug-importer oldest_to_newest 979504 0 beidson 2014-02-11 10:41:40 -0800 IndexedDB tests on some bots are flakey (timeouts) They were disabled in http://trac.webkit.org/changeset/163869 Canonical example of failures is http://build.webkit.org/results/Apple%20MountainLion%20Release%20WK2%20(Tests)/r163866%20(15869)/results.html As the URL suggests, that's the Mountain Lion release build. I cannot reproduce on Mavericks in a Debug build. I'm about to try a release build. 979510 1 webkit-bug-importer 2014-02-11 11:02:41 -0800 <rdar://problem/16038745> 979511 2 beidson 2014-02-11 11:04:30 -0800 Running the tests for 20 iterations in a release build I easily reproduced 6 times. Database process crashed: Thread 3 Crashed:: Dispatch queue: com.apple.WebKit.DatabaseProcess 0 com.apple.JavaScriptCore 0x000000011102866e WTFCrash + 62 (Assertions.cpp:333) 1 com.apple.JavaScriptCore 0x00000001110526ed WTF::StringImpl::~StringImpl() + 525 2 com.apple.JavaScriptCore 0x00000001110526fe WTF::StringImpl::destroy(WTF::StringImpl*) + 14 (StringImpl.cpp:147) 3 com.apple.JavaScriptCore 0x0000000110f9da9c JSC::PropertyTable::~PropertyTable() + 108 (StringImpl.h:609) 4 com.apple.JavaScriptCore 0x0000000110eff801 JSC::MarkedBlock::FreeList JSC::MarkedBlock::sweepHelper<(JSC::MarkedBlock::DestructorType)1>(JSC::MarkedBlock::SweepMode) + 353 (JSCell.h:133) 5 com.apple.JavaScriptCore 0x0000000110f02ee9 JSC::LastChanceToFinalize::ReturnType JSC::MarkedSpace::forEachBlock<JSC::LastChanceToFinalize>(JSC::LastChanceToFinalize&) + 137 (DoublyLinkedList.h:66) 6 com.apple.JavaScriptCore 0x0000000110f01012 JSC::MarkedSpace::lastChanceToFinalize() + 66 (DelayedReleaseScope.h:46) 7 com.apple.JavaScriptCore 0x0000000110fe8b2d JSC::VM::~VM() + 189 (VM.cpp:342) 8 com.apple.JavaScriptCore 0x0000000110e818e0 JSC::JSLockHolder::~JSLockHolder() + 80 (FastMalloc.h:275) 9 com.apple.WebKit2 0x0000000110550d11 WebKit::UniqueIDBDatabaseBackingStoreSQLite::~UniqueIDBDatabaseBackingStoreSQLite() + 173 (UniqueIDBDatabaseBackingStoreSQLite.cpp:82) 10 com.apple.WebKit2 0x0000000110550c4c WebKit::UniqueIDBDatabaseBackingStoreSQLite::~UniqueIDBDatabaseBackingStoreSQLite() + 14 (FastMalloc.h:275) 11 com.apple.WebKit2 0x0000000110497a6e WebKit::UniqueIDBDatabase::shutdownBackingStore(WebKit::UniqueIDBDatabaseShutdownType, WTF::String const&) + 36 (UniqueIDBDatabase.cpp:144) 12 com.apple.WebKit2 0x000000011049f2e7 WebKit::UniqueIDBDatabase::performNextDatabaseTask() + 111 (memory:2677) 13 com.apple.WebKit2 0x0000000110663e09 ___ZN9WorkQueue8dispatchENSt3__18functionIFvvEEE_block_invoke + 23 (WorkQueueMac.cpp:34) 14 libdispatch.dylib 0x00007fff8db7b1d7 _dispatch_call_block_and_release + 12 15 libdispatch.dylib 0x00007fff8db782ad _dispatch_client_callout + 8 16 libdispatch.dylib 0x00007fff8db7a68f _dispatch_queue_drain + 451 17 libdispatch.dylib 0x00007fff8db7b9dd _dispatch_queue_invoke + 110 18 libdispatch.dylib 0x00007fff8db79fa3 _dispatch_root_queue_drain + 75 19 libdispatch.dylib 0x00007fff8db7b193 _dispatch_worker_thread2 + 40 20 libsystem_pthread.dylib 0x00007fff8e88eef8 _pthread_wqthread + 314 21 libsystem_pthread.dylib 0x00007fff8e891fb9 start_wqthread + 13 Replacing JSLockHolder with APIEntryShim was an insta-fix 979512 3 223882 beidson 2014-02-11 11:05:06 -0800 Created attachment 223882 Patch v1 979521 4 beidson 2014-02-11 11:27:13 -0800 http://trac.webkit.org/changeset/163892 223882 2014-02-11 11:05:06 -0800 2014-02-11 11:24:27 -0800 Patch v1 patch text/plain 6312 beidson ZGlmZiAtLWdpdCBhL0xheW91dFRlc3RzL0NoYW5nZUxvZyBiL0xheW91dFRlc3RzL0NoYW5nZUxv ZwppbmRleCA3YWNlZGI0Li45YzM4NzQ0IDEwMDY0NAotLS0gYS9MYXlvdXRUZXN0cy9DaGFuZ2VM 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