Is this crash caused by me or UIKit itself? - ios

Question

This crash report is really tough for me to get a handle on. I've seen it every now and then, and its been pretty impossible to fix given that it doesn't really give me any references to my code to work from.
Is this a crash that was caused by Apple and I don't have to worry about it?
Date/Time: 2013-02-26 03:49:36 +0000
OS Version: iPhone OS 6.1.2 (10B146)
Report Version: 104
Exception Type: SIGTRAP
Exception Codes: #0 at 0x33973d24
Crashed Thread: 0
Thread 0 Crashed:
0 CoreFoundation 0x33973d24 CFRetain + 8
1 UIKit 0x359484f9 -[UIKeyboardCache displayView:imageWidth:withKey:fromLayout:] + 297
2 UIKit 0x359483c7 -[UIKeyboardCache displayView:withKey:fromLayout:] + 91
3 UIKit 0x35947b5b -[UIKBKeyplaneView displayLayer:] + 191
4 QuartzCore 0x355f34f7 CA::Layer::display() + 95
5 QuartzCore 0x355ea93b CA::Layer::display_if_needed(CA::Transaction*) + 203
6 QuartzCore 0x355ea865 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 25
7 QuartzCore 0x355ea243 CA::Context::commit_transaction(CA::Transaction*) + 239
8 QuartzCore 0x355ea051 CA::Transaction::commit() + 317
9 QuartzCore 0x355e9eb1 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 61
10 CoreFoundation 0x33a096cd __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 21
11 CoreFoundation 0x33a079c1 __CFRunLoopDoObservers + 277
12 CoreFoundation 0x33a07d17 __CFRunLoopRun + 743
13 CoreFoundation 0x3397aebd CFRunLoopRunSpecific + 357
14 CoreFoundation 0x3397ad49 CFRunLoopRunInMode + 105
15 GraphicsServices 0x3753c2eb GSEventRunModal + 75
16 UIKit 0x35890301 UIApplicationMain + 1121
17 MyApp 0x0004e60f main (main.m:16)
Thread 1:
0 libsystem_kernel.dylib 0x3bbbc648 kevent64 + 24
1 libdispatch.dylib 0x3bae7df8 _dispatch_mgr_thread$VARIANT$up + 36
Thread 2:
0 libsystem_kernel.dylib 0x3bbbbeb4 mach_msg_trap + 20
1 CoreFoundation 0x33a09045 __CFRunLoopServiceMachPort + 129
2 CoreFoundation 0x33a07da3 __CFRunLoopRun + 883
3 CoreFoundation 0x3397aebd CFRunLoopRunSpecific + 357
4 CoreFoundation 0x3397ad49 CFRunLoopRunInMode + 105
5 WebCore 0x3996f505 RunWebThread(void*) + 445
6 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 3:
0 libsystem_kernel.dylib 0x3bbbbeb4 mach_msg_trap + 20
1 CoreFoundation 0x33a09045 __CFRunLoopServiceMachPort + 129
2 CoreFoundation 0x33a07da3 __CFRunLoopRun + 883
3 CoreFoundation 0x3397aebd CFRunLoopRunSpecific + 357
4 CoreFoundation 0x3397ad49 CFRunLoopRunInMode + 105
5 Foundation 0x3429df97 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 255
6 Foundation 0x34341865 -[NSRunLoop(NSRunLoop) run] + 81
7 MyApp 0x0003f7b5 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:161)
8 Foundation 0x3434ae85 __NSThread__main__ + 973
9 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 4:
0 libsystem_kernel.dylib 0x3bbbbeb4 mach_msg_trap + 20
1 CoreFoundation 0x33a09045 __CFRunLoopServiceMachPort + 129
2 CoreFoundation 0x33a07da3 __CFRunLoopRun + 883
3 CoreFoundation 0x3397aebd CFRunLoopRunSpecific + 357
4 CoreFoundation 0x3397ad49 CFRunLoopRunInMode + 105
5 Foundation 0x342c73d5 +[NSURLConnection(Loader) _resourceLoadLoop:] + 309
6 Foundation 0x3434ae85 __NSThread__main__ + 973
7 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 5:
0 libsystem_kernel.dylib 0x3bbcc594 __select + 20
1 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 6:
0 libsystem_kernel.dylib 0x3bbcc08c __psynch_cvwait + 24
1 libsystem_c.dylib 0x3bb1daa5 pthread_cond_timedwait + 45
2 JavaScriptCore 0x37932c75 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 109
3 JavaScriptCore 0x37a44557 JSC::BlockAllocator::blockFreeingThreadMain() + 83
4 JavaScriptCore 0x37a56fab WTF::wtfThreadEntryPoint(void*) + 15
5 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 7:
0 libsystem_kernel.dylib 0x3bbbbeb4 mach_msg_trap + 20
1 CoreFoundation 0x33a09045 __CFRunLoopServiceMachPort + 129
2 CoreFoundation 0x33a07da3 __CFRunLoopRun + 883
3 CoreFoundation 0x3397aebd CFRunLoopRunSpecific + 357
4 CoreFoundation 0x3397ad49 CFRunLoopRunInMode + 105
5 AudioToolbox 0x3345c703 GenericRunLoopThread::Entry(void*) + 139
6 AudioToolbox 0x3343d885 CAPThread::Entry(CAPThread*) + 297
7 libsystem_c.dylib 0x3bb25311 _pthread_start + 309
Thread 8:
0 libsystem_kernel.dylib 0x3bbccd98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3bb1aa16 _pthread_wqthread + 366
Thread 9:
0 libsystem_kernel.dylib 0x3bbccd98 __workq_kernreturn + 8
1 libsystem_c.dylib 0x3bb1aa16 _pthread_wqthread + 366

Answer 1

This is not caused by apple. Below line is the entry point of the crash. Make sure some related object/view doesn't get deallocated.
MyApp 0x0003f7b5 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:161
Update:
I take back my object deallocation statement. I doubt this crash might happen due to UI element being created\updated in background thread. I mean an UI element created/updated in the network callback method.
The solution to the problem would be adding a dispatch_async in main_queue to perform the UI updates.