Bug 128656

Summary: REGRESSION: fast/workers/stress-js-execution.html crashes sometimes
Product: WebKit Reporter: Alexey Proskuryakov <ap>
Component: JavaScriptCoreAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: fpizlo, ggaren, mhahnenberg, webkit-bug-importer
Priority: P1 Keywords: InRadar, Regression
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   

Description Alexey Proskuryakov 2014-02-11 22:17:13 PST 
fast/workers/stress-js-execution.html started to flakily crash yesterday. Not frequently enough for me to pinpoint the revision.

http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fworkers%2Fstress-js-execution.html

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.JavaScriptCore      	0x000000010831bd4a WTFCrash + 42 (Assertions.cpp:333)
1   com.apple.JavaScriptCore      	0x0000000107c2126d JSC::SlotVisitor::unconditionallyAppend(JSC::JSCell*) + 77 (SlotVisitorInlines.h:123)
2   com.apple.JavaScriptCore      	0x0000000107f7b2ad JSC::Heap::addToRememberedSet(JSC::JSCell const*) + 237 (Heap.cpp:788)
3   com.apple.JavaScriptCore      	0x0000000107cdd638 JSC::CodeBlockSet::rememberCurrentlyExecutingCodeBlocks(JSC::Heap*) + 152 (CodeBlockSet.cpp:117)
4   com.apple.JavaScriptCore      	0x0000000107f7b90e JSC::Heap::collect() + 1470 (Heap.cpp:929)
5   com.apple.JavaScriptCore      	0x0000000107f6b294 JSC::DefaultGCActivityCallback::doWork() + 212 (GCActivityCallback.cpp:100)
6   com.apple.JavaScriptCore      	0x0000000107f8c242 JSC::HeapTimer::timerDidFire(__CFRunLoopTimer*, void*) + 338 (HeapTimer.cpp:98)
7   com.apple.CoreFoundation      	0x00007fff8e826724 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
Comment 1 Radar WebKit Bug Importer 2014-02-11 22:17:37 PST 
<rdar://problem/16045354>
Comment 2 Mark Hahnenberg 2014-02-11 22:21:44 PST 
Weird. A currently executing code block didn't mark its owner executable. That seems wrong.
Comment 3 Mark Hahnenberg 2014-02-19 11:12:22 PST 
Same symptom as the bug 128745, so duping.

*** This bug has been marked as a duplicate of bug 128745 ***