CoreFoundation __CFRunLoopDoTimer bug help

Please see above the crash report we have recieved via Fabrics.

We are unsure of the issue due to the crash report not mentioning any line number in our code as Fabric usually does.

We are thinking it could be an Apple iOS bug, but would like confirmation either way or assistance, if possible, to help find the cause.

We do not see any function calls from our app and so is happening outside of app's code we think.

Thank you and appreciate your time looking.

Daryl

Can anyone help at all please?

#0. Crashed: com.apple.main-thread

0 CoreFoundation 0x19302a8d4 __CFRunLoopDoTimer + 1588

1 CoreFoundation 0x193029ec4 __CFRunLoopDoTimers + 244

2 CoreFoundation 0x193027ac0 __CFRunLoopRun + 1572

3 CoreFoundation 0x192f56048 CFRunLoopRunSpecific + 444

4 GraphicsServices 0x1949d9198 GSEventRunModal + 180

5 UIKit 0x198f30628 -[UIApplication _run] + 684

6 UIKit 0x198f2b360 UIApplicationMain + 208

7 Dictate 0x100092c10 main (main.m:14)

8 libdispatch.dylib 0x191f385b8 (Missing)

--

#0. Crashed: com.apple.main-thread

0 CoreFoundation 0x19302a8d4 __CFRunLoopDoTimer + 1588

1 CoreFoundation 0x193029ec4 __CFRunLoopDoTimers + 244

2 CoreFoundation 0x193027ac0 __CFRunLoopRun + 1572

3 CoreFoundation 0x192f56048 CFRunLoopRunSpecific + 444

4 GraphicsServices 0x1949d9198 GSEventRunModal + 180

5 UIKit 0x198f30628 -[UIApplication _run] + 684

6 UIKit 0x198f2b360 UIApplicationMain + 208

7 Dictate 0x100092c10 main (main.m:14)

8 libdispatch.dylib 0x191f385b8 (Missing)

#1. com.apple.uikit.eventfetch-thread

0 libsystem_kernel.dylib 0x19202c16c mach_msg_trap + 8

1 libsystem_kernel.dylib 0x19202bfdc mach_msg + 72

2 CoreFoundation 0x193029cec __CFRunLoopServiceMachPort + 192

3 CoreFoundation 0x193027908 __CFRunLoopRun + 1132

4 CoreFoundation 0x192f56048 CFRunLoopRunSpecific + 444

5 Foundation 0x193a64b1c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304

6 Foundation 0x193a8560c -[NSRunLoop(NSRunLoop) runUntilDate:] + 96

7 UIKit 0x1998a5c7c -[UIEventFetcher threadMain] + 136

8 Foundation 0x193b6250c __NSThread__start__ + 1024

9 libsystem_pthread.dylib 0x19210f860 _pthread_body + 240

10 libsystem_pthread.dylib 0x19210f770 _pthread_body + 282

11 libsystem_pthread.dylib 0x19210cdbc thread_start + 4

#2. com.twitter.crashlytics.ios.MachExceptionServer

0 Dictate 0x10017b204 CLSProcessRecordAllThreads + 107156

1 Dictate 0x10017b204 CLSProcessRecordAllThreads + 107156

2 Dictate 0x10017b0c0 CLSProcessRecordAllThreads + 106832

3 Dictate 0x10016b880 CLSHandler + 43280

4 Dictate 0x100166824 CLSMachExceptionServer + 22708

5 libsystem_pthread.dylib 0x19210f860 _pthread_body + 240

6 libsystem_pthread.dylib 0x19210f770 _pthread_body + 282

7 libsystem_pthread.dylib 0x19210cdbc thread_start + 4

#3. com.apple.NSURLConnectionLoader

0 libsystem_kernel.dylib 0x19202c16c mach_msg_trap + 8

1 libsystem_kernel.dylib 0x19202bfdc mach_msg + 72

2 CoreFoundation 0x193029cec __CFRunLoopServiceMachPort + 192

3 CoreFoundation 0x193027908 __CFRunLoopRun + 1132

4 CoreFoundation 0x192f56048 CFRunLoopRunSpecific + 444

5 CFNetwork 0x193743cec +[NSURLConnection(Loader) _resourceLoadLoop:] + 336

6 Foundation 0x193b6250c __NSThread__start__ + 1024

7 libsystem_pthread.dylib 0x19210f860 _pthread_body + 240

8 libsystem_pthread.dylib 0x19210f770 _pthread_body + 282

9 libsystem_pthread.dylib 0x19210cdbc thread_start + 4

#4. Thread

0 libsystem_kernel.dylib 0x192049e1c __psynch_cvwait + 8

1 libsystem_pthread.dylib 0x19210e9d0 _pthread_cond_wait + 640

2 libc++.1.dylib 0x191a393ec std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 56

3 JavaScriptCore 0x1977fe548 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) + 112

4 JavaScriptCore 0x1977fe4bc bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadRunLoop() + 168

5 JavaScriptCore 0x1977fe39c std::__1::__shared_ptr_emplace<std::__1::mutex, std::__1::allocator<std::__1::mutex> >::~__shared_ptr_emplace() + 10

6 JavaScriptCore 0x1977fe64c void* std::__1::__thread_proxy<std::__1::tuple<void (*)(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*), bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*> >(void*) + 92

7 libsystem_pthread.dylib 0x19210f860 _pthread_body + 240

8 libsystem_pthread.dylib 0x19210f770 _pthread_body + 282

9 libsystem_pthread.dylib 0x19210cdbc thread_start + 4

#5. com.apple.coreaudio.AQClient

0 libsystem_kernel.dylib 0x19202c16c mach_msg_trap + 8

1 libsystem_kernel.dylib 0x19202bfdc mach_msg + 72

2 CoreFoundation 0x193029cec __CFRunLoopServiceMachPort + 192

3 CoreFoundation 0x193027908 __CFRunLoopRun + 1132

4 CoreFoundation 0x192f56048 CFRunLoopRunSpecific + 444

5 AudioToolbox 0x195fd5fd0 GenericRunLoopThread::Entry(void*) + 164

6 AudioToolbox 0x1961ab590 CAPThread::Entry(CAPThread*) + 84

7 libsystem_pthread.dylib 0x19210f860 _pthread_body + 240

8 libsystem_pthread.dylib 0x19210f770 _pthread_body + 282

9 libsystem_pthread.dylib 0x19210cdbc thread_start + 4

#6. Thread

0 libsystem_kernel.dylib 0x19204aa88 __workq_kernreturn + 8

1 libsystem_pthread.dylib 0x19210d36c _pthread_wqthread + 1452

2 libsystem_pthread.dylib 0x19210cdb4 start_wqthread + 4

#7. Thread

0 libsystem_kernel.dylib 0x19204aa88 __workq_kernreturn + 8

1 libsystem_pthread.dylib 0x19210d36c _pthread_wqthread + 1452

2 libsystem_pthread.dylib 0x19210cdb4 start_wqthread + 4

#8. Thread

0 libsystem_kernel.dylib 0x19204aa88 __workq_kernreturn + 8

1 libsystem_pthread.dylib 0x19210d36c _pthread_wqthread + 1452

2 libsystem_pthread.dylib 0x19210cdb4 start_wqthread + 4

Can anyone help with this please?

Could you be running out of memory? I had something like this in a crash log but when I got the console log I saw a bunch of "Received memory warning" before the crash.