JavaScriptCore Crash in iOS17.4.1

Our app collected some JavaScriptCore crash information on iOS17 and above systems, but the cause of the error cannot be located. The crash stack is as follows:

#27

Heap Helper Thread

SIGSEGV

0 JavaScriptCore JSC::MarkedBlock::aboutToMarkSlow(unsigned int) 1 JavaScriptCore JSC::JSFinalObject::visitChildren(JSC::JSCell*, JSC::SlotVisitor&) 2 JavaScriptCore JSC::JSFinalObject::visitChildren(JSC::JSCell*, JSC::SlotVisitor&) 3 JavaScriptCore JSC::SlotVisitor::drain(***::MonotonicTime) 4 JavaScriptCore JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode, ***::MonotonicTime) 5 JavaScriptCore ***::SharedTaskFunctor<void (), JSC::Heap::runBeginPhase(JSC::GCConductor)::$_15>::run() 6 JavaScriptCore ***::ParallelHelperClient::runTask(***::RefPtr<***::SharedTask<void ()>, ***::RawPtrTraits<***::SharedTask<void ()> >, ***::DefaultRefDerefTraits<***::SharedTask <void ()> > > const&) 7 JavaScriptCore ***::ParallelHelperPool::Thread::work() 8 JavaScriptCore ***::Detail::CallableWrapper<***::AutomaticThread::start(***::AbstractLocker const&)::$_0, void>::call() 9 JavaScriptCore ***::Thread::entryPoint(***::Thread::NewThreadContext*) 10 JavaScriptCore ***::wtfThreadEntryPoint(void*) 11 libsystem_pthread.dylib __pthread_start

#1 Queue: com.apple.main-thread

SIGSEGV

0 libobjc.A.dylib _objc_msgSend 1 UIKitCore -[UIView(Geometry) convertPoint:toView:]

#24

JSC Heap Collector Thread

SIGSEGV

0 libsystem_kernel.dylib ___psynch_cvwait 1 libsystem_pthread.dylib __pthread_cond_wait 2 JavaScriptCore ***::ThreadCondition::timedWait(***::Mutex&, ***::WallTime) 3 JavaScriptCore ***::ParkingLot::parkConditionallyImpl(void const*, ***::ScopedLambda<bool ()> const&, ***::ScopedLambda<void ()> const&, ***::TimeWithDynamicClockType const&) 4 JavaScriptCore bool ***::Condition::waitUntilUnchecked<***::Lock>(***::Lock&, ***::TimeWithDynamicClockType const&) 5 JavaScriptCore JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode, ***::MonotonicTime) 6 JavaScriptCore JSC::Heap::runConcurrentPhase(JSC::GCConductor) 7 JavaScriptCore JSC::Heap::runCurrentPhase(JSC::GCConductor, JSC::CurrentThreadState*) 8 JavaScriptCore JSC::Heap::HeapThread::work() 9 JavaScriptCore ***::Detail::CallableWrapper<***::AutomaticThread::start(***::AbstractLocker const&)::$_0, void>::call() 10 JavaScriptCore ***::Thread::entryPoint(***::Thread::NewThreadContext*) 11 JavaScriptCore ***::wtfThreadEntryPoint(void*) 12 libsystem_pthread.dylib __pthread_start

#25

Heap Helper Thread

SIGSEGV

0 libsystem_kernel.dylib ___psynch_cvwait 1 libsystem_pthread.dylib __pthread_cond_wait 2 JavaScriptCore ***::ThreadCondition::timedWait(***::Mutex&, ***::WallTime) 3 JavaScriptCore ***::ParkingLot::parkConditionallyImpl(void const*, ***::ScopedLambda<bool ()> const&, ***::ScopedLambda<void ()> const&, ***::TimeWithDynamicClockType const&) 4 JavaScriptCore bool ***::Condition::waitUntilUnchecked<***::Lock>(***::Lock&, ***::TimeWithDynamicClockType const&) 5 JavaScriptCore JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode, ***::MonotonicTime) 6 JavaScriptCore ***::SharedTaskFunctor<void (), JSC::Heap::runBeginPhase(JSC::GCConductor)::$_15>::run() 7 JavaScriptCore ***::ParallelHelperClient::runTask(***::RefPtr<***::SharedTask<void ()>, ***::RawPtrTraits<***::SharedTask<void ()> >, ***::DefaultRefDerefTraits<***::SharedTask<void ()> > > const&) 8 JavaScriptCore ***::ParallelHelperPool::Thread::work() 9 JavaScriptCore ***::Detail::CallableWrapper<***::AutomaticThread::start(***::AbstractLocker const&)::$_0, void>::call() 10 JavaScriptCore ***::Thread::entryPoint(***::Thread::NewThreadContext*) 11 JavaScriptCore ***::wtfThreadEntryPoint(void*) 12 libsystem_pthread.dylib __pthread_start

#27

Heap Helper Thread

SIGSEGV

0 libsystem_kernel.dylib ___psynch_cvwait 1 libsystem_pthread.dylib __pthread_cond_wait 2 JavaScriptCore ***::ThreadCondition::timedWait(***::Mutex&, ***::WallTime) 3 JavaScriptCore ***::ParkingLot::parkConditionallyImpl(void const*, ***::ScopedLambda<bool ()> const&, ***::ScopedLambda<void ()> const&, ***::TimeWithDynamicClockType const&) 4 JavaScriptCore bool ***::Condition::waitUntilUnchecked<***::Lock>(***::Lock&, ***::TimeWithDynamicClockType const&) 5 JavaScriptCore JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode, ***::MonotonicTime) 6 JavaScriptCore ***::SharedTaskFunctor<void (), JSC::Heap::runBeginPhase(JSC::GCConductor)::$_15>::run() 7 JavaScriptCore ***::ParallelHelperClient::runTask(***::RefPtr<***::SharedTask<void ()>, ***::RawPtrTraits<***::SharedTask<void ()> >, ***::DefaultRefDerefTraits<***::SharedTask<void ()> > > const&) 8 JavaScriptCore ***::ParallelHelperPool::Thread::work() 9 JavaScriptCore ***::Detail::CallableWrapper<***::AutomaticThread::start(***::AbstractLocker const&)::$_0, void>::call() 10 JavaScriptCore ***::Thread::entryPoint(***::Thread::NewThreadContext*) 11 JavaScriptCore ***::wtfThreadEntryPoint(void*) 12 libsystem_pthread.dylib __pthread_start

Please help analyze and locate the cause. Has anyone else encountered this problem?

Replies

Please post a full crash report, using the process described by Posting a Crash Report.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

  • See the comments below for the full crash log

    Thanks

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The following are several complete crash log information. Currently, crashes are only collected on iOS17 and above systems, especially on iOS17.4.1.

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