Attachment 1483688 Details for Bug 1629457 – File: backtrace

File: backtrace

backtrace (text/plain), 21.51 KB, created by Michael Catanzaro on 2018-09-16 14:35:02 UTC

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Creator: Michael Catanzaro

Created: 2018-09-16 14:35:02 UTC

Size: 21.51 KB

patch

obsolete

>warning: core file may not match specified executable file.
>[New LWP 2744]
>[New LWP 2762]
>[New LWP 2761]
>[New LWP 2782]
>[New LWP 2783]
>[New LWP 2763]
>[New LWP 6304]
>[New LWP 6327]
>[New LWP 4806]
>[New LWP 2791]
>[New LWP 6298]
>[New LWP 2870]
>[New LWP 6333]
>[New LWP 6331]
>[New LWP 6332]
>[New LWP 6328]
>[New LWP 2792]
>[New LWP 6329]
>[New LWP 2784]
>[New LWP 6299]
>[New LWP 6330]
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>Core was generated by `/usr/libexec/webkit2gtk-4.0/WebKitWebProcess 8 41'.
>Program terminated with signal SIGSEGV, Segmentation fault.
>#0  0x00007fb93cedf8aa in JSC::AccessCase::visitWeak (this=0x18bfae1000000001, vm=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/AccessCase.cpp:320
>320	/usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/AccessCase.cpp: No such file or directory.
>[Current thread is 1 (Thread 0x7fb9411beac0 (LWP 2744))]
>
>Thread 1 (Thread 0x7fb9411beac0 (LWP 2744)):
>#0  0x00007fb93cedf8aa in JSC::AccessCase::visitWeak(JSC::VM&) const (this=0x18bfae1000000001, vm=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/AccessCase.cpp:320
>#1  0x00007fb93cf34949 in JSC::PolymorphicAccess::visitWeak(JSC::VM&) const (this=0x7fb82b4f1c08, vm=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/PolymorphicAccess.h:149
>        i = 0
>#2  0x00007fb93cf4a4db in JSC::StructureStubInfo::visitWeakReferences(JSC::CodeBlock*) (this=0x7fb818f65960, codeBlock=0x7fb81b21b520) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/StructureStubInfo.cpp:279
>        vm = <optimized out>
>#3  0x00007fb93cf0a963 in JSC::CodeBlock::finalizeBaselineJITInlineCaches() (this=this@entry=0x7fb81b21b520) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/CodeBlock.cpp:1412
>#4  0x00007fb93cf130ad in JSC::CodeBlock::finalizeUnconditionally(JSC::VM&) (this=0x7fb81b21b520) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/bytecode/CodeBlock.cpp:1426
>#5  0x00007fb93d325c6f in JSC::IsoCellSet::forEachMarkedCell<void JSC::Heap::finalizeMarkedUnconditionalFinalizers<JSC::CodeBlock, JSC::IsoCellSet>(JSC::IsoCellSet&)::{lambda(JSC::HeapCell*, JSC::HeapCell::Kind)#1}>(void JSC::Heap::finalizeMarkedUnconditionalFinalizers<JSC::CodeBlock, JSC::IsoCellSet>(JSC::IsoCellSet&)::{lambda(JSC::HeapCell*, JSC::HeapCell::Kind)#1} const&) (this=this@entry=0x7fb8c85100e8, func=...) at /usr/include/bits/string_fortified.h:34
>        directory = @0x7fb8c850ff40: {m_blocks = {<WTF::VectorBuffer<JSC::MarkedBlock::Handle*, 0>> = {<WTF::VectorBufferBase<JSC::MarkedBlock::Handle*>> = {m_buffer = 0x7fb828484000, m_capacity = 171, m_size = 168}, <No data fields>}, <No data fields>}, m_freeBlockIndices = {<WTF::VectorBuffer<unsigned int, 0>> = {<WTF::VectorBufferBase<unsigned int>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_bitvectorLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_live = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486ca8, m_numBits = 171}}, <No data fields>}, m_empty = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486cc0, m_numBits = 171}}, <No data fields>}, m_allocated = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486cd8, m_numBits = 171}}, <No data fields>}, m_canAllocateButNotEmpty = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486cf0, m_numBits = 171}}, <No data fields>}, m_destructible = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486d08, m_numBits = 171}}, <No data fields>}, m_eden = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486d20, m_numBits = 171}}, <No data fields>}, m_unswept = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486d38, m_numBits = 171}}, <No data fields>}, m_markingNotEmpty = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486d50, m_numBits = 171}}, <No data fields>}, m_markingRetired = {<WTF::FastBitVectorImpl<WTF::FastBitVectorWordOwner>> = {m_words = {m_words = 0x7fb81b486d68, m_numBits = 171}}, <No data fields>}, m_emptyCursor = 0, m_unsweptCursor = 0, m_cellSize = 544, m_attributes = {destruction = JSC::NeedsDestruction, cellKind = JSC::HeapCell::JSCell}, m_heap = 0x7fb8c8500010, m_subspace = 0x7fb8c850fed0, m_nextDirectory = 0x7fb8c85101a8, m_nextDirectoryInSubspace = 0x0, m_nextDirectoryInAlignedMemoryAllocator = 0x0, m_localAllocatorsLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_localAllocators = {m_headSentinel = {m_next = 0x7fb8c8510060, m_prev = 0x0}, m_tailSentinel = {m_next = 0x0, m_prev = 0x7fb8c8510060}}}
>#6  0x00007fb93d31dabc in JSC::Heap::finalizeMarkedUnconditionalFinalizers<JSC::CodeBlock, JSC::IsoCellSet>(JSC::IsoCellSet&) (cellSet=..., this=0x7fb8c8500010) at /usr/include/bits/string_fortified.h:34
>#7  0x00007fb93d31dabc in JSC::Heap::<lambda(auto:4&)>::operator()<JSC::VM::SpaceAndFinalizerSet> (__closure=<optimized out>, space=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:593
>#8  0x00007fb93d31dabc in JSC::VM::forEachCodeBlockSpace<JSC::Heap::finalizeUnconditionalFinalizers()::<lambda(auto:4&)> > (func=..., this=0x7fb8c8500000) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/runtime/VM.h:436
>#9  0x00007fb93d31dabc in JSC::Heap::finalizeUnconditionalFinalizers() (this=this@entry=0x7fb8c8500010) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:591
>#10 0x00007fb93d31f360 in JSC::Heap::runEndPhase(JSC::GCConductor) (this=0x7fb8c8500010, conn=<optimized out>) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:1471
>#11 0x00007fb93d3214da in JSC::Heap::runCurrentPhase(JSC::GCConductor, JSC::CurrentThreadState*) (this=0x7fb8c8500010, conn=<optimized out>, currentThreadState=0x7ffe7cdadf20) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:1187
>#12 0x00007fb93d3232ee in WTF::ScopedLambdaFunctor<void(JSC::CurrentThreadState&), JSC::Heap::collectInMutatorThread()::<lambda(JSC::CurrentThreadState&)> >::implFunction(void *, JSC::CurrentThreadState &) (argument=0x7ffe7cdadf90, arguments#0=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:1791
>#13 0x00007fb93d330bf9 in WTF::ScopedLambda<void (JSC::CurrentThreadState&)>::operator()<JSC::CurrentThreadState&>(JSC::CurrentThreadState&) const (this=0x7ffe7cdadf90, this=0x7ffe7cdadf90) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/MachineStackMarker.cpp:225
>        state = {stackOrigin = 0x7ffe7cdaf000, stackTop = 0x7ffe7cdadf20, registerState = 0x7ffe7cdadf40}
>        state_registerState = {rbx = 140730993139600, r12 = 140433581191332, r13 = 1, r14 = 140433581211744, r15 = 0}
>#14 0x00007fb93d330bf9 in JSC::callWithCurrentThreadState(WTF::ScopedLambda<void (JSC::CurrentThreadState&)> const&) (lambda=...) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/MachineStackMarker.cpp:225
>        state = {stackOrigin = 0x7ffe7cdaf000, stackTop = 0x7ffe7cdadf20, registerState = 0x7ffe7cdadf40}
>        state_registerState = {rbx = 140730993139600, r12 = 140433581191332, r13 = 1, r14 = 140433581211744, r15 = 0}
>#15 0x00007fb93d3215db in JSC::Heap::collectInMutatorThread() (this=0x7fb8c8500010) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:1803
>        lambda = {__this = 0x7fb8c8500010}
>        result = <optimized out>
>        collectingScope = {m_heap = @0x7fb8c8500010, m_oldState = JSC::MutatorState::Allocating}
>#16 0x00007fb93d32163c in JSC::Heap::stopIfNecessarySlow(unsigned int) (this=0x7fb8c8500010, oldState=<optimized out>) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/Heap.cpp:1772
>#17 0x00007fb93d321d63 in JSC::Heap::stopIfNecessarySlow() (this=0x7fb8c8500010) at /usr/include/c++/8/bits/atomic_base.h:82
>#18 0x00007fb93d3223b5 in JSC::Heap::collectIfNecessaryOrDefer(JSC::GCDeferralContext*) (this=this@entry=0x7fb8c8500010, deferralContext=deferralContext@entry=0x0) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/HeapInlines.h:266
>#19 0x00007fb93d3301f0 in JSC::LocalAllocator::allocateSlowCase(JSC::GCDeferralContext*, JSC::AllocationFailureMode) (this=0x7fb91c4e1f00, deferralContext=0x0, failureMode=JSC::AllocationFailureMode::ReturnNull) at /usr/src/debug/webkit2gtk3-2.22.0-1.fc28.x86_64/Source/JavaScriptCore/heap/LocalAllocator.cpp:124
>        superSamplerScope = {m_doSample = false}
>        heap = Python Exception <class 'gdb.error'> There is no member or method named _M_payload.: 
>Python Exception <class 'gdb.error'> There is no member or method named _M_payload.: 
>Python Exception <class 'gdb.error'> There is no member or method named _M_payload.: 
>@0x7fb8c8500010: {static s_timeCheckResolution = 16, immutableButterflyToStringCache = {m_impl = {static m_maxLoad = 2, static m_minLoad = 6, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}}, static minExtraMemory = 256, m_heapType = JSC::LargeHeap, m_ramSize = 8261939200, m_minBytesPerCycle = 33554432, m_sizeAfterLastCollect = 40215030, m_sizeAfterLastFullCollect = 368876, m_sizeBeforeLastFullCollect = 266176, m_sizeAfterLastEdenCollect = 40215030, m_sizeBeforeLastEdenCollect = 40816510, m_bytesAllocatedThisCycle = 601480, m_bytesAbandonedSinceLastFullCollect = 40441828, m_maxEdenSize = 33185556, m_maxEdenSizeWhenCritical = 413096959, m_maxHeapSize = 73400586, m_shouldDoFullCollection = true, m_totalBytesVisited = 14601776, m_totalBytesVisitedThisCycle = 67632, m_incrementBalance = 0, m_collectionScope = {<std::constexpr_optional_base<JSC::CollectionScope>> = {init_ = true, storage_ = {dummy_ = 0 '\000', value_ = JSC::CollectionScope::Eden}}, <No data fields>}, m_lastCollectionScope = {<std::constexpr_optional_base<JSC::CollectionScope>> = {init_ = true, storage_ = {dummy_ = 0 '\000', value_ = JSC::CollectionScope::Eden}}, <No data fields>}, m_mutatorState = JSC::MutatorState::Collecting, m_structureIDTable = {static s_initialSize = 256, m_oldTables = {<WTF::VectorBuffer<std::unique_ptr<JSC::StructureIDTable::StructureOrOffset [], WTF::FastFree<JSC::StructureIDTable::StructureOrOffset []> >, 0>> = {<WTF::VectorBufferBase<std::unique_ptr<JSC::StructureIDTable::StructureOrOffset [], WTF::FastFree<JSC::StructureIDTable::StructureOrOffset []> > >> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_firstFreeOffset = 14033, m_table = std::unique_ptr<JSC::StructureIDTable::StructureOrOffset []> = {get() = 0x7fb82b64e000}, m_size = 29493, m_capacity = 32768, static s_unusedID = 3521625839}, m_objectSpace = {static sizeStep = 16, static preciseCutoff = 80, static blockPayload = 16080, static largeCutoff = 8032, static numSizeClasses = 502, static nullVersion = 0, static initialVersion = 2, static s_sizeClassForSizeStep = {_M_elems = {16, 32, 48, 64, 80, 112, 112, 160, 160, 160, 224, 224, 224, 224, 304, 304, 304, 304, 304, 320, 432, 432, 432, 432, 432, 432, 432, 608 <repeats 11 times>, 880 <repeats 17 times>, 1232 <repeats 22 times>, 1776 <repeats 34 times>, 2672 <repeats 56 times>, 4016 <repeats 84 times>, 5360 <repeats 84 times>, 8032 <repeats 167 times>}}, m_subspaces = {<WTF::VectorBuffer<JSC::Subspace*, 0>> = {<WTF::VectorBufferBase<JSC::Subspace*>> = {m_buffer = 0x7fb91c488000, m_capacity = 68, m_size = 56}, <No data fields>}, <No data fields>}, m_largeAllocations = {<WTF::VectorBuffer<JSC::LargeAllocation*, 0>> = {<WTF::VectorBufferBase<JSC::LargeAllocation*>> = {m_buffer = 0x7fb87f6edb00, m_capacity = 16, m_size = 2}, <No data fields>}, <No data fields>}, m_largeAllocationsNurseryOffset = 2, m_largeAllocationsOffsetForThisCollection = 2, m_largeAllocationsNurseryOffsetForSweep = 1, m_largeAllocationsForThisCollectionBegin = 0x7fb87f6edb10, m_largeAllocationsForThisCollectionEnd = 0x7fb87f6edb10, m_largeAllocationsForThisCollectionSize = 0, m_heap = 0x7fb8c8500010, m_markingVersion = 3, m_newlyAllocatedVersion = 12, m_capacity = 25403104, m_isIterating = false, m_isMarking = false, m_blocks = {m_filter = {m_bits = 140432545660928}, m_set = {m_impl = {static m_maxLoad = 2, static m_minLoad = 6, m_table = 0x7fb8baea8000, m_tableSize = 4096, m_tableSizeMask = 4095, m_keyCount = 1549, m_deletedCount = 0}}}, m_activeWeakSets = {m_headSentinel = {m_next = 0x7fb91c4cde10, m_prev = 0x0}, m_tailSentinel = {m_next = 0x0, m_prev = 0x7fb818b0de10}}, m_newActiveWeakSets = {m_headSentinel = {m_next = 0x7fb87f654508, m_prev = 0x0}, m_tailSentinel = {m_next = 0x0, m_prev = 0x7fb91c4cd838}}, m_directoryLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_directories = {m_first = 0x7fb8c850b898, m_last = 0x7fb87eaa55a0}}, m_arrayBuffers = {m_vector = {<WTF::VectorBuffer<JSC::ArrayBuffer*, 0>> = {<WTF::VectorBufferBase<JSC::ArrayBuffer*>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_bytes = 0}, m_extraMemorySize = 23850257, m_deprecatedExtraMemorySize = 2154427, m_copyingRememberedSet = {m_impl = {static m_maxLoad = <optimized out>, static m_minLoad = <optimized out>, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}}, m_protectedValues = {m_impl = {m_impl = {static m_maxLoad = 2, static m_minLoad = 6, m_table = 0x0, m_tableSize = 0, m_tableSizeMask = 0, m_keyCount = 0, m_deletedCount = 0}}}, m_markListSet = std::unique_ptr<WTF::HashSet<JSC::MarkedArgumentBuffer*, WTF::PtrHash<JSC::MarkedArgumentBuffer*>, WTF::HashTraits<JSC::MarkedArgumentBuffer*> >> = {get() = 0x0}, m_machineThreads = std::unique_ptr<JSC::MachineThreads> = {get() = 0x7fb91c4fc210}, m_collectorSlotVisitor = std::unique_ptr<JSC::SlotVisitor> = {get() = 0x7fb91c4c6000}, m_mutatorSlotVisitor = std::unique_ptr<JSC::SlotVisitor> = {get() = 0x7fb91c4c60e0}, m_mutatorMarkStack = std::unique_ptr<JSC::MarkStackArray> = {get() = 0x7fb91c4f8300}, m_raceMarkStackLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_raceMarkStack = std::unique_ptr<JSC::MarkStackArray> = {get() = 0x7fb91c4f8320}, m_constraintSet = std::unique_ptr<JSC::MarkingConstraintSet> = {get() = 0x7fb91c4fb410}, m_parallelSlotVisitors = {<WTF::VectorBuffer<std::unique_ptr<JSC::SlotVisitor, std::default_delete<JSC::SlotVisitor> >, 0>> = {<WTF::VectorBufferBase<std::unique_ptr<JSC::SlotVisitor, std::default_delete<JSC::SlotVisitor> > >> = {m_buffer = 0x7fb91c4fd780, m_capacity = 16, m_size = 7}, <No data fields>}, <No data fields>}, m_availableParallelSlotVisitors = {<WTF::VectorBuffer<JSC::SlotVisitor*, 0>> = {<WTF::VectorBufferBase<JSC::SlotVisitor*>> = {m_buffer = 0x7fb91c4fd700, m_capacity = 16, m_size = 7}, <No data fields>}, <No data fields>}, m_parallelSlotVisitorLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_handleSet = {m_vm = 0x7fb8c8500000, m_blockList = {m_head = 0x7fb91c4bf000, m_tail = 0x7fb91c4bf000}, m_strongList = {m_headSentinel = {m_value = {static numberOfInt52Bits = 52, static notInt52 = 4503599627370496, static int52ShiftAmount = 12, u = {asInt64 = 0, ptr = 0x0, asBits = {payload = 0, tag = 0}}}, m_prev = 0x0, m_next = 0x7fb91c4bfd38}, m_tailSentinel = {m_value = {static numberOfInt52Bits = 52, static notInt52 = 4503599627370496, static int52ShiftAmount = 12, u = {asInt64 = 0, ptr = 0x0, asBits = {payload = 0, tag = 0}}}, m_prev = 0x7fb91c4bf018, m_next = 0x0}}, m_immediateList = {m_headSentinel = {m_value = {static numberOfInt52Bits = 52, static notInt52 = 4503599627370496, static int52ShiftAmount = 12, u = {asInt64 = 0, ptr = 0x0, asBits = {payload = 0, tag = 0}}}, m_prev = 0x0, m_next = 0x7fb91c4bf840}, m_tailSentinel = {m_value = {static numberOfInt52Bits = 52, static notInt52 = 4503599627370496, static int52ShiftAmount = 12, u = {asInt64 = 0, ptr = 0x0, asBits = {payload = 0, tag = 0}}}, m_prev = 0x7fb91c4bf540, m_next = 0x0}}, m_freeList = {m_head = 0x7fb91c4bfcc0}}, m_codeBlocks = std::unique_ptr<JSC::CodeBlockSet> = {get() = 0x7fb91c4d5118}, m_jitStubRoutines = std::unique_ptr<JSC::JITStubRoutineSet> = {get() = 0x7fb91c4fe2f8}, m_finalizerOwner = {<JSC::WeakHandleOwner> = {_vptr.WeakHandleOwner = 0x7fb93db345f0 <vtable for JSC::Heap::FinalizerOwner+16>}, <No data fields>}, m_isSafeToCollect = true, m_isShuttingDown = false, m_mutatorShouldBeFenced = false, m_barrierThreshold = 0, m_vm = 0x7fb8c8500000, m_lastFullGCLength = {m_value = 0.00093400000014298712}, m_lastEdenGCLength = {m_value = 0.011050999999952182}, m_logicallyEmptyWeakBlocks = {<WTF::VectorBuffer<JSC::WeakBlock*, 0>> = {<WTF::VectorBufferBase<JSC::WeakBlock*>> = {m_buffer = 0x7fb88bc1bd80, m_capacity = 27, m_size = 27}, <No data fields>}, <No data fields>}, m_indexOfNextLogicallyEmptyWeakBlockToSweep = 18446744073709551615, m_fullActivityCallback = {static isRefPtr = <optimized out>, m_ptr = 0x7fb91c4be000}, m_edenActivityCallback = {static isRefPtr = <optimized out>, m_ptr = 0x7fb91c4cb1c8}, m_sweeper = {static isRefPtr = <optimized out>, m_ptr = 0x7fb91c4cb260}, m_stopIfNecessaryTimer = {static isRefPtr = <optimized out>, m_ptr = 0x7fb91c4cd088}, m_observers = {<WTF::VectorBuffer<JSC::HeapObserver*, 0>> = {<WTF::VectorBufferBase<JSC::HeapObserver*>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_heapFinalizerCallbacks = {<WTF::VectorBuffer<JSC::HeapFinalizerCallback, 0>> = {<WTF::VectorBufferBase<JSC::HeapFinalizerCallback>> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_deferralDepth = 0, m_didDeferGCWork = true, m_verifier = std::unique_ptr<JSC::HeapVerifier> = {get() = 0x0}, m_delayedReleaseObjects = {<WTF::VectorBuffer<std::unique_ptr<JSC::JSCGLibWrapperObject, std::default_delete<JSC::JSCGLibWrapperObject> >, 0>> = {<WTF::VectorBufferBase<std::unique_ptr<JSC::JSCGLibWrapperObject, std::default_delete<JSC::JSCGLibWrapperObject> > >> = {m_buffer = 0x0, m_capacity = 0, m_size = 0}, <No data fields>}, <No data fields>}, m_delayedReleaseRecursionCount = 0, m_weakGCMaps = {m_impl = {static m_maxLoad = 2, static m_minLoad = 6, m_table = 0x7fb81b288000, m_tableSize = 2048, m_tableSizeMask = 2047, m_keyCount = 599, m_deletedCount = 0}}, m_visitRaceLock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_markingMutex = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}, m_markingConditionVariable = {m_hasWaiters = {value = {_M_base = {static _S_alignment = 1, _M_i = false}}}}, m_sharedCollectorMarkStack = std::unique_ptr<JSC::MarkStackArray> = {get() = 0x7fb91c4f8340}, m_sharedMutatorMarkStack = std::unique_ptr<JSC::MarkStackArray> = {get() = 0x7fb91c4f8360}, m_numberOfActiveParallelMarkers = 0, m_numberOfWaitingParallelMarkers = 98, m_parallelMarkersShouldExit = true, m_opaqueRoots = {m_allTables = {<WTF::VectorBuffer<std::unique_ptr<WTF::ConcurrentPtrHashSet::Table, std::default_delete<WTF::ConcurrentPtrHashSet::Table> >, 4>> = {<WTF::VectorBufferBase<std::unique_ptr<WTF::ConcurrentPtrHashSet::Table, std::default_delete<WTF::ConcurrentPtrHashSet::Table> > >> = {m_buffer = 0x7fb8c8500420, m_capacity = 4, m_size = 1}, m_inlineBuffer = {{__data = "\000`\236\030\270\177\000", __align = {<No data fields>}}, {__data = "\000`\236\030\270\177\000", __align = {<No data fields>}}, {__data = "\000\000\000\000\000\000\000", __align = {<No data fields>}}, {__data = "\000\000\000\000\000\000\000", __align = {<No data fields>}}}}, <No data fields>}, m_table = {value = {_M_b = {_M_p = 0x7fb8189e6000}}}, m_lock = {static isHeldBit = 1 '\001', static hasParkedBit = 2 '\002', m_byte = {value = {<std::__atomic_base<unsigned char>> = {static _S_alignment = 1, _M_i = 0 '\000'}, <No data fields>}}}}, static s_blockFragmentLength = 32, m_helperClient = {m_pool = {static isRefPtr = <optimized out>, m_ptr = 0x7fb91c4d9180}, m_task = {static isRefPtr = <optimized out>, m_ptr = 0x0}, m_numActive = 0}, m_bonusVisitorTask = {static isRefPtr = <optimized out>, m_ptr = 0x0}, m_blockBytesAllocated = 26769920, m_externalMemorySize = 0, m_scheduler = std::unique_ptr<JSC::MutatorScheduler> = {get() = 0x7fb91c4ca068}, static mutatorHasConnBit = 1, static stoppedBit = 2, static hasAccessBit = 4, static gcDidJITBit = 8, static needFinalizeBit = 16, static mutatorWaitingBit = 32, m_worldState = {value = {<std::__atomic_base<unsigned int>> = {static _S_alignment = 4, _M_i = 5}, <No data fields>}}, m_worldIsStopped = true, m_beforeGC = {static clockType = WTF::ClockType::Monotonic,
>Timeout exceeded: 240 seconds, killing /usr/libexec/gdb.
>Looks like gdb hung while generating backtrace.
>This may be a bug in gdb. Consider submitting a bug report to gdb developers.
>Please attach coredump from this crash to the bug report if you do.

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Attachments on bug 1629457: 1483688 | 1483689 | 1483690 | 1483691 | 1483692 | 1483693 | 1483694 | 1483695 | 1483696 | 1483697 | 1483698 | 1483699