iPad Native crashes when app resumes back - ios

Question

The iPad app crashes when we idle the app for sometime and then resume it from the lock state, the crash log is shown below the app freezes and to restrat the app we need to do the soft reset to the app
Incident Identifier: EDF8518C-EFE6-4E99-B462-B5FD7BC4C68C
CrashReporter Key: 59b53e06d0757c3331182b9eed3d03b9bc5194d4
Hardware Model: iPad2,1
Process: ll [2353]
Path: /private/var/mobile/Containers/Bundle/Application/CCD700F0-DDC1-4E4A-AC23-B424866AD7DF/ll.app/ll
Identifier: com.sw.ll
Version: 0.5.1 (0.5.1)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2015-05-27 14:19:32.184 +0530
Launch Time: 2015-05-27 13:49:22.619 +0530
OS Version: iOS 8.3 (12F69)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0xbbadbeef
Triggered by Thread: 4
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0:
0 libsystem_kernel.dylib 0x3a38849c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a388290 mach_msg + 36
2 CoreFoundation 0x2ba577ee __CFRunLoopServiceMachPort + 142
3 CoreFoundation 0x2ba55db4 __CFRunLoopRun + 1012
4 CoreFoundation 0x2b9a199c CFRunLoopRunSpecific + 472
5 CoreFoundation 0x2b9a17ae CFRunLoopRunInMode + 102
6 GraphicsServices 0x331221a4 GSEventRunModal + 132
7 UIKit 0x2f12c690 UIApplicationMain + 1436
8 ll 0x000e6e3a 0xb3000 + 212538
9 libdyld.dylib 0x3a2d5aac start + 0
Thread 1 name: Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0 libsystem_kernel.dylib 0x3a38824c kevent64 + 24
1 libdispatch.dylib 0x3a2a84ec _dispatch_mgr_invoke + 276
2 libdispatch.dylib 0x3a2a821e _dispatch_mgr_thread$VARIANT$mp + 34
Thread 2 name: com.apple.NSURLConnectionLoader
Thread 2:
0 libsystem_kernel.dylib 0x3a38849c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a388290 mach_msg + 36
2 CoreFoundation 0x2ba577ee __CFRunLoopServiceMachPort + 142
3 CoreFoundation 0x2ba55db4 __CFRunLoopRun + 1012
4 CoreFoundation 0x2b9a199c CFRunLoopRunSpecific + 472
5 CoreFoundation 0x2b9a17ae CFRunLoopRunInMode + 102
6 CFNetwork 0x2b53f642 +[NSURLConnection(Loader) _resourceLoadLoop:] + 482
7 Foundation 0x2c7d0186 __NSThread__main__ + 1114
8 libsystem_pthread.dylib 0x3a41bde8 _pthread_body + 136
9 libsystem_pthread.dylib 0x3a41bd5a _pthread_start + 114
10 libsystem_pthread.dylib 0x3a419b04 thread_start + 4
Thread 3:
0 libsystem_kernel.dylib 0x3a38849c mach_msg_trap + 20
1 libsystem_kernel.dylib 0x3a388290 mach_msg + 36
2 CoreFoundation 0x2ba577ee __CFRunLoopServiceMachPort + 142
3 CoreFoundation 0x2ba55db4 __CFRunLoopRun + 1012
4 CoreFoundation 0x2b9a199c CFRunLoopRunSpecific + 472
5 CoreFoundation 0x2b9eb366 CFRunLoopRun + 94
6 CoreMotion 0x2c2b6ab6 0x2c271000 + 285366
7 libsystem_pthread.dylib 0x3a41bde8 _pthread_body + 136
8 libsystem_pthread.dylib 0x3a41bd5a _pthread_start + 114
9 libsystem_pthread.dylib 0x3a419b04 thread_start + 4
Thread 4 name: WebThread
Thread 4 Crashed:
0 JavaScriptCore 0x2cf99286 WTFCrash + 54
1 JavaScriptCore 0x2cedca80 JSC::JSLock::DropAllLocks::DropAllLocks(JSC::VM*) + 176
2 WebCore 0x375fec7c SendDelegateMessage(NSInvocation*) + 180
3 WebKitLegacy 0x3811c42a CallResourceLoadDelegate(objc_object* (*)(objc_object*, objc_selector*, ...), WebView*, objc_selector, objc_object*, objc_object*, objc_object*) + 206
4 WebKitLegacy 0x381036b6 WebFrameLoaderClient::dispatchDidFailLoading(WebCore::DocumentLoader*, unsigned long, WebCore::ResourceError const&) + 202
5 WebCore 0x3762c5e2 WebCore::ResourceLoadNotifier::didFailToLoad(WebCore::ResourceLoader*, WebCore::ResourceError const&) + 62
6 WebCore 0x3762bf44 WebCore::ResourceLoader::cancel(WebCore::ResourceError const&) + 316
7 WebCore 0x3762bdf2 WebCore::ResourceLoader::cancel() + 50
8 WebCore 0x375a753e WebCore::CachedResource::removeClient(WebCore::CachedResourceClient*) + 390
9 WebCore 0x37f8badc WebCore::WebCoreAVFResourceLoader::invalidate() + 24
10 WebCore 0x37cf45a2 WebCore::MediaPlayerPrivateAVFoundationObjC::~MediaPlayerPrivateAVFoundationObjC() + 262
11 WebCore 0x37cf4ce0 WebCore::MediaPlayerPrivateAVFoundationObjC::~MediaPlayerPrivateAVFoundationObjC() + 4
12 WebCore 0x37cf00ca WebCore::MediaPlayer::~MediaPlayer() + 110
13 WebCore 0x37cf010c WebCore::MediaPlayer::~MediaPlayer() + 4
14 WebCore 0x3798ba8e WebCore::HTMLMediaElement::~HTMLMediaElement() + 842
15 WebCore 0x3796f9d8 WebCore::HTMLAudioElement::~HTMLAudioElement() + 4
16 WebCore 0x37cd96a4 WebCore::LiveNodeList::~LiveNodeList() + 40
17 WebCore 0x37f2c54e WebCore::CachedLiveNodeList<WebCore::HTMLTagNodeList>::~CachedLiveNodeList() + 138
18 WebCore 0x3768f00e WebCore::HTMLTagNodeList::~HTMLTagNodeList() + 78
19 WebCore 0x3768eb28 WebCore::JSNodeListOwner::finalize(JSC::Handle<JSC::Unknown>, void*) + 276
20 JavaScriptCore 0x2cd1f654 JSC::WeakBlock::sweep() + 72
21 JavaScriptCore 0x2ccbe7f0 JSC::WeakSet::sweep() + 16
22 JavaScriptCore 0x2ccbe79a JSC::MarkedBlock::sweep(JSC::MarkedBlock::SweepMode) + 14
23 JavaScriptCore 0x2cf25dd0 JSC::MarkedAllocator::tryAllocateHelper(unsigned long) + 128
24 JavaScriptCore 0x2ccbdfee JSC::MarkedAllocator::allocateSlowCase(unsigned long) + 114
I'm uploading the screen where the break point will be paused

Answer 1

This is an EXC_BAD_ACCESS type of code which relates to accessing deallocated memory. In order to find this you need to enable NSZombie objects. Press Option/alt + Command + R and select the "Diagnostics" tab. Finally, click "Enable Zombie Objects". This should make the compiler stop on the line of code that is causing this crash.
Apple documents about Application with Diagnostics