127513 2014-01-23 14:44:15 -0800 ASSERTION(m_operationInProgress == NoOperation) when inspecting JSContext 2022-02-12 20:01:00 -0800 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED DUPLICATE 127950 InRadar P2 Normal --- 1 joepeck webkit-unassigned bfulgham ggaren joepeck mhahnenberg webkit-bug-importer oldest_to_newest 971346 0 joepeck 2014-01-23 14:44:15 -0800 I'm seeing a JSC multithreading issue when inspecting a JSContext (code not yet checked in). Hmm, I'm still seeing a related issue: ASSERTION FAILED: m_operationInProgress == NoOperation /Volumes/Data/Code/safari/OpenSource/Source/JavaScriptCore/heap/Heap.cpp(759) : void JSC::Heap::collect(JSC::Heap::SweepToggle) 1 0x1006a33d0 WTFCrash 2 0x1003310a6 JSC::Heap::collect(JSC::Heap::SweepToggle) 3 0x100326310 JSC::DefaultGCActivityCallback::doWork() 4 0x100340172 JSC::HeapTimer::timerDidFire(__CFRunLoopTimer*, void*) 5 0x7fff88f5b724 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ 6 0x7fff88f5b25f __CFRunLoopDoTimer 7 0x7fff88fcc76a __CFRunLoopDoTimers 8 0x7fff88f16aa5 __CFRunLoopRun 9 0x7fff88f16275 CFRunLoopRunSpecific 10 0x7fff942abf0d RunCurrentEventLoopInMode 11 0x7fff942abcb7 ReceiveNextEventCommon 12 0x7fff942ababc _BlockUntilNextEventMatchingListInModeWithFilter 13 0x7fff8db6f28e _DPSNextEvent 14 0x7fff8db6e8db -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] 15 0x7fff8db629cc -[NSApplication run] 16 0x7fff8db4d803 NSApplicationMain 17 0x100002022 main 18 0x7fff89c225fd start 19 0x3 (lldb) thread backtrace all * thread #1: tid = 0xd83a4a, 0x00000001006a33da JavaScriptCore`WTFCrash + 42 at Assertions.cpp:341, queue = 'com.apple.main-thread, stop reason = EXC_BAD_ACCESS (code=1, address=0xbbadbeef) frame #0: 0x00000001006a33da JavaScriptCore`WTFCrash + 42 at Assertions.cpp:341 frame #1: 0x00000001003310a6 JavaScriptCore`JSC::Heap::collect(this=0x0000000101859218, sweepToggle=DoNotSweep) + 502 at Heap.cpp:759 frame #2: 0x0000000100326310 JavaScriptCore`JSC::DefaultGCActivityCallback::doWork(this=0x000060800012d200) + 208 at GCActivityCallback.cpp:98 frame #3: 0x0000000100340172 JavaScriptCore`JSC::HeapTimer::timerDidFire(timer=0x000060800016b880, context=0x00006080000d62d0) + 338 at HeapTimer.cpp:97 frame #4: 0x00007fff88f5b724 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20 frame #5: 0x00007fff88f5b25f CoreFoundation`__CFRunLoopDoTimer + 1151 frame #6: 0x00007fff88fcc76a CoreFoundation`__CFRunLoopDoTimers + 298 frame #7: 0x00007fff88f16aa5 CoreFoundation`__CFRunLoopRun + 1525 frame #8: 0x00007fff88f16275 CoreFoundation`CFRunLoopRunSpecific + 309 frame #9: 0x00007fff942abf0d HIToolbox`RunCurrentEventLoopInMode + 226 frame #10: 0x00007fff942abcb7 HIToolbox`ReceiveNextEventCommon + 479 frame #11: 0x00007fff942ababc HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 65 frame #12: 0x00007fff8db6f28e AppKit`_DPSNextEvent + 1434 frame #13: 0x00007fff8db6e8db AppKit`-[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122 frame #14: 0x00007fff8db629cc AppKit`-[NSApplication run] + 553 frame #15: 0x00007fff8db4d803 AppKit`NSApplicationMain + 940 frame #16: 0x0000000100002022 JSContextTester`main(argc=3, argv=0x00007fff5fbffb50) + 34 at main.m:13 frame #17: 0x00007fff89c225fd libdyld.dylib`start + 1 thread #2: tid = 0xd83a8f, 0x00007fff8ee7ae6a libsystem_kernel.dylib`__workq_kernreturn + 10 frame #0: 0x00007fff8ee7ae6a libsystem_kernel.dylib`__workq_kernreturn + 10 frame #1: 0x00007fff92325f08 libsystem_pthread.dylib`_pthread_wqthread + 330 frame #2: 0x00007fff92328fb9 libsystem_pthread.dylib`start_wqthread + 13 thread #3: tid = 0xd83a90, 0x00007fff8ee7b662 libsystem_kernel.dylib`kevent64 + 10, queue = 'com.apple.libdispatch-manager frame #0: 0x00007fff8ee7b662 libsystem_kernel.dylib`kevent64 + 10 frame #1: 0x00007fff926e543d libdispatch.dylib`_dispatch_mgr_invoke + 239 frame #2: 0x00007fff926e5152 libdispatch.dylib`_dispatch_mgr_thread + 52 thread #4: tid = 0xd83a91, 0x00007fff8ee7a746 libsystem_kernel.dylib`__psynch_mutexwait + 10, queue = 'com.apple.JavaScriptCore.remote-inspector-xpc-connection frame #0: 0x00007fff8ee7a746 libsystem_kernel.dylib`__psynch_mutexwait + 10 frame #1: 0x00007fff92327779 libsystem_pthread.dylib`_pthread_mutex_lock + 372 frame #2: 0x00000001006f2095 JavaScriptCore`WTF::Mutex::lock(this=0x00006080000d62d8) + 21 at ThreadingPthreads.cpp:343 frame #3: 0x0000000100400e8f JavaScriptCore`JSC::JSLock::lock(this=0x00006080000d62d0) + 191 at JSLock.cpp:117 frame #4: 0x0000000100401387 JavaScriptCore`JSC::JSLock::grabAllLocks(this=0x00006080000d62d0, lockCount=2, spinLock=0x00006080000d62d4) + 55 at JSLock.cpp:277 frame #5: 0x0000000100401706 JavaScriptCore`JSC::JSLock::DropAllLocks::~DropAllLocks(this=0x000000010227f9b0) + 150 at JSLock.cpp:323 frame #6: 0x0000000100401665 JavaScriptCore`JSC::JSLock::DropAllLocks::~DropAllLocks(this=0x000000010227f9b0) + 21 at JSLock.cpp:316 frame #7: 0x000000010033d06d JavaScriptCore`JSC::APICallbackShim::~APICallbackShim(this=0x000000010227f9b0) + 61 at APIShims.h:102 frame #8: 0x000000010033cce5 JavaScriptCore`JSC::APICallbackShim::~APICallbackShim(this=0x000000010227f9b0) + 21 at APIShims.h:100 frame #9: 0x000000010033cc55 JavaScriptCore`JSC::DelayedReleaseScope::~DelayedReleaseScope(this=0x000000010227fa40) + 149 at DelayedReleaseScope.h:52 frame #10: 0x00000001003339e5 JavaScriptCore`JSC::DelayedReleaseScope::~DelayedReleaseScope(this=0x000000010227fa40) + 21 at DelayedReleaseScope.h:46 frame #11: 0x00000001004d8623 JavaScriptCore`JSC::MarkedAllocator::tryAllocateHelper(this=0x000000010185fbe8, bytes=88) + 451 at MarkedAllocator.cpp:65 frame #12: 0x00000001004d6f82 JavaScriptCore`JSC::MarkedAllocator::tryAllocate(this=0x000000010185fbe8, bytes=88) + 114 at MarkedAllocator.cpp:78 frame #13: 0x00000001004d69f5 JavaScriptCore`JSC::MarkedAllocator::allocateSlowCase(this=0x000000010185fbe8, bytes=88) + 245 at MarkedAllocator.cpp:96 frame #14: 0x000000010001931f JavaScriptCore`JSC::MarkedAllocator::allocate(this=0x000000010185fbe8, bytes=88) + 79 at MarkedAllocator.h:91 frame #15: 0x00000001000191b9 JavaScriptCore`JSC::MarkedSpace::allocateWithoutDestructor(this=0x00000001018594c8, bytes=88) + 41 at MarkedSpace.h:219 frame #16: 0x00000001000190c6 JavaScriptCore`JSC::Heap::allocateWithoutDestructor(this=0x0000000101859218, bytes=88) + 118 at Heap.h:443 frame #17: 0x00000001000c5067 JavaScriptCore`void* JSC::allocateCell<JSC::JSActivation>(heap=0x0000000101859218, size=88) + 151 at JSCellInlines.h:97 frame #18: 0x00000001000c4f75 JavaScriptCore`JSC::JSActivation::create(vm=0x0000000101859200, callFrame=0x000000010ae47e30, registers=0x000000010ae47e30, codeBlock=0x000000010250a610) + 133 at JSActivation.h:57 frame #19: 0x00000001000add64 JavaScriptCore`JSC::JSActivation::create(vm=0x0000000101859200, callFrame=0x000000010ae47e30, codeBlock=0x000000010250a610) + 68 at JSActivation.h:66 frame #20: 0x00000001004ad826 JavaScriptCore`llint_slow_path_create_activation(exec=0x000000010ae47e30, pc=0x000000010481b820) + 134 at LLIntSlowPaths.cpp:446 frame #21: 0x00000001004b8055 JavaScriptCore`llint_op_create_activation + 32 thread.... 971347 1 webkit-bug-importer 2014-01-23 14:44:43 -0800 <rdar://problem/15896408> 1840834 2 bfulgham 2022-02-12 20:01:00 -0800 *** This bug has been marked as a duplicate of bug 127950 ***