¿Cómo identificar la causa de la caída del iPad?

Estoy desarrollando una aplicación para iPad, me enfrento a un problema de falla, pero no puedo encontrar la causa detrás de eso.

Después del locking señala solo el file main.mm

Tratar:

  - NSLogs - NSZombiEnabled 

A continuación se muestra el logging de locking. Según mi conocimiento, está utilizando una location de memory que ya se ha liberado. ¿Pero cómo identificar, qué object es?

 Incident Identifier: AF769A76-ADB4-4C3C-9A94-E0B45A994B42 CrashReporter Key: 7443d58afe6b6a3df23c273ba834f8ae4814a7ce Hardware Model: iPad2,1 Process: BLSOffline [3255] Path: /var/mobile/Applications/A4C2BB5D-0FE4-4A4D-B1D6-FF6E0183F4EE/BLSOffline.app/BLSOffline Identifier: com.bentley.LearnInHouse Version: 1.0 (1.0) Code Type: ARM (Native) Parent Process: launchd [1] Date/Time: 2013-12-02 18:29:21.692 +0530 OS Version: iOS 7.0.4 (11B554a) Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x6192010b Triggenetworking by Thread: 0 Thread 0 Crashed: 0 libobjc.A.dylib 0x3a92db26 objc_msgSend + 6 1 MediaPlayer 0x314a2540 -[MPMoviePlayerControllerNew _moviePlayerWillBecomeActiveNotification:] + 472 2 CoreFoundation 0x30223116 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 10 3 CoreFoundation 0x30197252 _CFXNotificationPost + 1714 4 Foundation 0x30b7cc28 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72 5 MediaPlayer 0x314a4a60 -[MPMoviePlayerControllerNew _postNotificationName:object:userInfo:] + 96 6 MediaPlayer 0x314a49f0 -[MPMoviePlayerControllerNew _postNotificationName:object:] + 40 7 MediaPlayer 0x314a43d4 -[MPMoviePlayerControllerNew _ensureActive] + 128 8 MediaPlayer 0x314a44a2 -[MPMoviePlayerControllerNew _prepareToPlayWithStartIndex:] + 66 9 MediaPlayer 0x314a009c -[MPMoviePlayerControllerNew prepareToPlay] + 40 10 MediaPlayer 0x314a0100 -[MPMoviePlayerControllerNew play] + 44 11 MediaPlayer 0x314a2b2e -[MPMoviePlayerControllerNew _movieSourceTypeAvailableNotification:] + 350 12 CoreFoundation 0x30223116 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 10 13 CoreFoundation 0x30197252 _CFXNotificationPost + 1714 14 Foundation 0x30b7cc28 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72 15 Foundation 0x30b81506 -[NSNotificationCenter postNotificationName:object:] + 26 16 MediaPlayer 0x31525b00 -[MPMovie _determineMediaType] + 152 17 Foundation 0x30c3b386 __NSFireDelayedPerform + 410 18 CoreFoundation 0x3022c0dc __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 12 19 CoreFoundation 0x3022bcf2 __CFRunLoopDoTimer + 778 20 CoreFoundation 0x3022a08e __CFRunLoopRun + 1206 21 CoreFoundation 0x30194c22 CFRunLoopRunSpecific + 518 22 CoreFoundation 0x30194a06 CFRunLoopRunInMode + 102 23 GraphicsServices 0x34e6827e GSEventRunModal + 134 24 UIKit 0x32a38044 UIApplicationMain + 1132 25 BLSOffline 0x00116c0e 0xee000 + 166926 26 libdyld.dylib 0x3ae3aab4 start + 0 Thread 1 name: gputools.smt_poll.0x14632d20 Thread 1: 0 libsystem_kernel.dylib 0x3aef1550 __semwait_signal + 24 1 libsystem_c.dylib 0x3ae62808 nanosleep + 168 2 libsystem_c.dylib 0x3ae62756 usleep + 46 3 GPUToolsCore 0x02292f34 smt_poll_thread_entry(void*) + 120 4 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 5 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 6 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 2: 0 libsystem_kernel.dylib 0x3aede83c kevent64 + 24 1 libdispatch.dylib 0x3ae1f210 _dispatch_mgr_invoke + 228 2 libdispatch.dylib 0x3ae1ef96 _dispatch_mgr_thread$VARIANT$mp + 34 Thread 3 name: WebThread Thread 3: 0 libsystem_kernel.dylib 0x3aef0fa8 __psynch_mutexwait + 24 1 libsystem_pthread.dylib 0x3af57f0a _pthread_mutex_lock + 302 2 WebCore 0x383037f0 _WebTryThreadLock(bool) + 104 3 WebCore 0x38303772 WebRunLoopLock(__CFRunLoopObserver*, unsigned long, void*) + 42 4 CoreFoundation 0x3022c1ca __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18 5 CoreFoundation 0x30229b6c __CFRunLoopDoObservers + 280 6 CoreFoundation 0x30229f7c __CFRunLoopRun + 932 7 CoreFoundation 0x30194c22 CFRunLoopRunSpecific + 518 8 CoreFoundation 0x30194a06 CFRunLoopRunInMode + 102 9 WebCore 0x38302266 RunWebThread(void*) + 414 10 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 11 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 12 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 4: 0 libsystem_kernel.dylib 0x3aedea8c mach_msg_trap + 20 1 libsystem_kernel.dylib 0x3aede888 mach_msg + 44 2 CoreFoundation 0x3022b7be __CFRunLoopServiceMachPort + 150 3 CoreFoundation 0x30229ee4 __CFRunLoopRun + 780 4 CoreFoundation 0x30194c22 CFRunLoopRunSpecific + 518 5 CoreFoundation 0x30194a06 CFRunLoopRunInMode + 102 6 libAVFAudio.dylib 0x2f217584 GenericRunLoopThread::Entry(void*) + 124 7 libAVFAudio.dylib 0x2f20b99c CAPThread::Entry(CAPThread*) + 176 8 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 9 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 10 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 5 name: JavaScriptCore::BlockFree Thread 5: 0 libsystem_kernel.dylib 0x3aef0f38 __psynch_cvwait + 24 1 libsystem_pthread.dylib 0x3af59224 _pthread_cond_wait + 536 2 libsystem_pthread.dylib 0x3af5a000 pthread_cond_wait + 36 3 JavaScriptCore 0x311b9d50 JSC::BlockAllocator::blockFreeingThreadMain() + 204 4 JavaScriptCore 0x311b73a0 WTF::wtfThreadEntryPoint(void*) + 12 5 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 6 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 7 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 6 name: JavaScriptCore::Marking Thread 6: 0 libsystem_kernel.dylib 0x3aef0f38 __psynch_cvwait + 24 1 libsystem_pthread.dylib 0x3af59224 _pthread_cond_wait + 536 2 libsystem_pthread.dylib 0x3af5a000 pthread_cond_wait + 36 3 JavaScriptCore 0x31355236 JSC::GCThread::waitForNextPhase() + 74 4 JavaScriptCore 0x31355290 JSC::GCThread::gcThreadMain() + 48 5 JavaScriptCore 0x311b73a0 WTF::wtfThreadEntryPoint(void*) + 12 6 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 7 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 8 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 7 name: WebCore: CFNetwork Loader Thread 7: 0 libsystem_kernel.dylib 0x3aedea8c mach_msg_trap + 20 1 libsystem_kernel.dylib 0x3aede888 mach_msg + 44 2 CoreFoundation 0x3022b7be __CFRunLoopServiceMachPort + 150 3 CoreFoundation 0x30229ee4 __CFRunLoopRun + 780 4 CoreFoundation 0x30194c22 CFRunLoopRunSpecific + 518 5 CoreFoundation 0x30194a06 CFRunLoopRunInMode + 102 6 WebCore 0x3834ad5a WebCore::runLoaderThread(void*) + 250 7 JavaScriptCore 0x311b73a0 WTF::wtfThreadEntryPoint(void*) + 12 8 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 9 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 10 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 8 name: com.apple.NSURLConnectionLoader Thread 8: 0 libsystem_kernel.dylib 0x3aedea8c mach_msg_trap + 20 1 libsystem_kernel.dylib 0x3aede888 mach_msg + 44 2 CoreFoundation 0x3022b7be __CFRunLoopServiceMachPort + 150 3 CoreFoundation 0x30229ee4 __CFRunLoopRun + 780 4 CoreFoundation 0x30194c22 CFRunLoopRunSpecific + 518 5 CoreFoundation 0x30194a06 CFRunLoopRunInMode + 102 6 Foundation 0x30bcf2f2 +[NSURLConnection(Loader) _resourceLoadLoop:] + 314 7 Foundation 0x30c44c82 __NSThread__main__ + 1058 8 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 9 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 10 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 9 name: com.apple.CFSocket.private Thread 9: 0 libsystem_kernel.dylib 0x3aef1440 __select + 20 1 CoreFoundation 0x3022f680 __CFSocketManager + 480 2 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 3 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 4 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 10 name: WebCore: LocalStorage Thread 10: 0 libsystem_kernel.dylib 0x3aef0f38 __psynch_cvwait + 24 1 libsystem_pthread.dylib 0x3af59224 _pthread_cond_wait + 536 2 libsystem_pthread.dylib 0x3af5a000 pthread_cond_wait + 36 3 JavaScriptCore 0x311b9e82 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 58 4 WebCore 0x384353a8 WTF::PassOwnPtr<WTF::Function<void ()> > WTF::MessageQueue<WTF::Function<void ()> >::waitForMessageFiltenetworkingWithTimeout<bool (WTF::Function<void ()>*)>(WTF::MessageQueueWaitResult&, bool (&)(WTF::Function<void ()>*), double) + 104 5 WebCore 0x3843532e WebCore::StorageThread::threadEntryPoint() + 162 6 JavaScriptCore 0x311b73a0 WTF::wtfThreadEntryPoint(void*) + 12 7 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 8 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 9 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 11 name: com.apple.coremedia.player.async Thread 11: 0 libsystem_kernel.dylib 0x3aedeadc semaphore_wait_trap + 8 1 libdispatch.dylib 0x3ae1d428 _dispatch_semaphore_wait_slow + 172 2 MediaToolbox 0x3168083c fpa_AsyncMovieControlThread + 1752 3 CoreMedia 0x307bf234 figThreadMain + 192 4 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 5 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 6 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 12 name: com.apple.coremedia.player.remote Thread 12: 0 libsystem_kernel.dylib 0x3aedea8c mach_msg_trap + 20 1 libsystem_kernel.dylib 0x3aede888 mach_msg + 44 2 MediaToolbox 0x31686c58 FigExpressNotificationThread + 84 3 CoreMedia 0x307bf234 figThreadMain + 192 4 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 5 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 6 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 13: 0 libsystem_kernel.dylib 0x3aef1c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x3af57dc6 _pthread_wqthread + 306 2 libsystem_pthread.dylib 0x3af57c80 start_wqthread + 4 Thread 14: 0 libsystem_kernel.dylib 0x3aef1c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x3af57dc6 _pthread_wqthread + 306 2 libsystem_pthread.dylib 0x3af57c80 start_wqthread + 4 Thread 15 name: com.apple.coremedia.player.async Thread 15: 0 libsystem_kernel.dylib 0x3aedeadc semaphore_wait_trap + 8 1 libdispatch.dylib 0x3ae1d428 _dispatch_semaphore_wait_slow + 172 2 MediaToolbox 0x3168083c fpa_AsyncMovieControlThread + 1752 3 CoreMedia 0x307bf234 figThreadMain + 192 4 libsystem_pthread.dylib 0x3af59c1a _pthread_body + 138 5 libsystem_pthread.dylib 0x3af59b8a _pthread_start + 98 6 libsystem_pthread.dylib 0x3af57c8c thread_start + 4 Thread 16: 0 libsystem_kernel.dylib 0x3aef1c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x3af57dc6 _pthread_wqthread + 306 2 libsystem_pthread.dylib 0x3af57c80 start_wqthread + 4 Thread 0 crashed with ARM Thread State (32-bit): r0: 0x145cb7d0 r1: 0x31617754 r2: 0x3b3091a0 r3: 0x00000000 r4: 0x1918aea0 r5: 0x145cb7d0 r6: 0x00000000 r7: 0x27d134f8 r8: 0x00000000 r9: 0x619200ff r10: 0x31617754 r11: 0x145cb7ec ip: 0x3b2cd2a4 sp: 0x27d134c0 lr: 0x314a2545 pc: 0x3a92db26 cpsr: 0x60000030 

Parece como si se está olvidando quitar un observador para las devoluciones de llamada de película:

 -(void) dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self]; } 

Es probable que el reproductor de películas (a través de NSNotificationCenter) sea el object que está using some memory location which has already been freed cuando intenta notificar a sus observadores