Unbekannter Absturzgrund (mit angehängtem CrashReport) SIGTRAP. AFNetworking?

Question

Ich bekomme diese Abstürze in meiner App, die im AppStore ist. Die CrashReport sieht immer wie folgt aus:

Incident Identifier: 986486D7-F013-4102-B9E3-84F923223914 
CrashReporter Key: [TODO] 
Hardware Model:  iPhone4,1 
Process:   MyApp [57885] 
Path:   /Users/USER/MyApp.app/MyApp 
Identifier:  de.myapp.iphone 
Version:   12475 
Code Type:  ARM 
Parent Process: launchd [1] 

Date/Time:  2012-12-20 15:48:53 +0000 
OS Version:  iPhone OS 6.0.1 (10A523) 
Report Version: 104 

Exception Type: SIGTRAP 
Exception Codes: #0 at 0x3abd62be 
Crashed Thread: 0 

Thread 0 Crashed: 
0 CoreFoundation      0x363582be CFRelease + 18 
1 WebCore        0x383de395 WebCore::stopSharedTimer() + 33 
2 WebCore        0x38433515 WebCore::TimerBase::~TimerBase() + 45 
3 WebCore        0x3846003b WebCore::Document::~Document() + 2751 
4 WebCore        0x3845f56d WebCore::HTMLDocument::~HTMLDocument() + 81 
5 WebCore        0x384e9473 WebCore::JSNodeOwner::finalize(JSC::Handle<JSC::Unknown>, void*) + 79 
6 JavaScriptCore      0x321e2067 JSC::WeakBlock::sweep() + 87 
7 JavaScriptCore      0x321e22ad JSC::WeakSet::sweep() + 53 
8 JavaScriptCore      0x3213d877 JSC::Heap::collect(JSC::Heap::SweepToggle) + 175 
9 JavaScriptCore      0x3213cad9 JSC::DefaultGCActivityCallbackPlatformData::timerDidFire(__CFRunLoopTimer*, void*) + 145 
10 CoreFoundation      0x363ec5df __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 15 
11 CoreFoundation      0x363ec291 __CFRunLoopDoTimer + 273 
12 CoreFoundation      0x363eaf01 __CFRunLoopRun + 1233 
13 CoreFoundation      0x3635debd CFRunLoopRunSpecific + 357 
14 CoreFoundation      0x3635dd49 CFRunLoopRunInMode + 105 
15 GraphicsServices     0x3490e2eb GSEventRunModal + 75 
16 UIKit        0x37b2b2f9 UIApplicationMain + 1121 
17 MyApp        0x00003927 main (main.m:20) 

Thread 5: 
0 libsystem_kernel.dylib    0x3681feb4 mach_msg_trap + 20 
1 CoreFoundation      0x363ec045 __CFRunLoopServiceMachPort + 129 
2 CoreFoundation      0x363eada3 __CFRunLoopRun + 883 
3 CoreFoundation      0x3635debd CFRunLoopRunSpecific + 357 
4 CoreFoundation      0x3635dd49 CFRunLoopRunInMode + 105 
5 Foundation       0x307f978f -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 255 
6 Foundation       0x3089d05d -[NSRunLoop(NSRunLoop) run] + 81 
7 MyApp        0x000c3225 +[AFURLConnectionOperation networkRequestThreadEntryPoint:] (AFURLConnectionOperation.m:157) 
8 Foundation       0x308a667d __NSThread__main__ + 973 
9 libsystem_c.dylib     0x33ab5311 _pthread_start + 309 

Thread 6: 
0 libsystem_kernel.dylib    0x3681feb4 mach_msg_trap + 20 
1 CoreFoundation      0x363ec045 __CFRunLoopServiceMachPort + 129 
2 CoreFoundation      0x363eada3 __CFRunLoopRun + 883 
3 CoreFoundation      0x3635debd CFRunLoopRunSpecific + 357 
4 CoreFoundation      0x3635dd49 CFRunLoopRunInMode + 105 
5 Foundation       0x30822bcd +[NSURLConnection(Loader) _resourceLoadLoop:] + 309 
6 Foundation       0x308a667d __NSThread__main__ + 973 
7 libsystem_c.dylib     0x33ab5311 _pthread_start + 309 

Thread 7: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 8: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 10: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 13: 
0 libsystem_kernel.dylib    0x3682239c pread + 20 
1 libsqlite3.dylib     0x33978109 sqlite3_get_table + 125 
2 libsqlite3.dylib     0x339772a7 sqlite3_get_table + 125 
3 libsqlite3.dylib     0x33d25fb1 0x33cde000 + 294833 
4 libsqlite3.dylib     0x33d13807 0x33cde000 + 219143 
5 libsqlite3.dylib     0x33d0d49d 0x33cde000 + 193693 
6 libsqlite3.dylib     0x3398648f sqlite3_step + 2143 
7 CFNetwork       0x3138276b __CFURLCache::DoBulkLookupAndStoreBasedOnTime(__CFString const*) + 459 
8 CFNetwork       0x313c4667 __ExecuteSQLSelectAndCreateResponse_block_invoke_0 + 35 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 17: 
0 libsystem_kernel.dylib    0x3683008c __psynch_cvwait + 24 
1 libsystem_c.dylib     0x33aadaa5 pthread_cond_timedwait + 45 
2 JavaScriptCore      0x320d6c75 WTF::ThreadCondition::timedWait(WTF::Mutex&, double) + 109 
3 JavaScriptCore      0x321e8557 JSC::BlockAllocator::blockFreeingThreadMain() + 83 
4 JavaScriptCore      0x321fafab _ZN3WTFL19wtfThreadEntryPointEPv + 15 
5 libsystem_c.dylib     0x33ab5311 _pthread_start + 309 

Thread 18: 
0 libsystem_kernel.dylib    0x3683008c __psynch_cvwait + 24 
1 libsystem_c.dylib     0x33ab7f19 pthread_cond_wait + 41 
2 JavaScriptCore      0x3217bf41 JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode) + 149 
3 JavaScriptCore      0x3217be81 JSC::MarkStackThreadSharedData::markingThreadMain() + 145 
4 JavaScriptCore      0x321fafab _ZN3WTFL19wtfThreadEntryPointEPv + 15 
5 libsystem_c.dylib     0x33ab5311 _pthread_start + 309 

Thread 22: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 25: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 43: 
0 libsystem_kernel.dylib    0x3682239c pread + 20 
1 libsqlite3.dylib     0x33978109 sqlite3_get_table + 125 
2 libsqlite3.dylib     0x339772a7 sqlite3_get_table + 125 
3 libsqlite3.dylib     0x33d25fb1 0x33cde000 + 294833 
4 libsqlite3.dylib     0x33d13807 0x33cde000 + 219143 
5 libsqlite3.dylib     0x33d0d49d 0x33cde000 + 193693 
6 libsqlite3.dylib     0x3398648f sqlite3_step + 2143 
7 CFNetwork       0x3138276b __CFURLCache::DoBulkLookupAndStoreBasedOnTime(__CFString const*) + 459 
8 CFNetwork       0x313c4667 __ExecuteSQLSelectAndCreateResponse_block_invoke_0 + 35 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 44: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x31382619 __CFURLCache::DoBulkLookupAndStoreBasedOnTime(__CFString const*) + 121 
2 CFNetwork       0x313c4667 __ExecuteSQLSelectAndCreateResponse_block_invoke_0 + 35 
3 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
4 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
5 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
6 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 47: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 49: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 50: 
0 libsystem_kernel.dylib    0x368300fc __psynch_mutexwait + 24 
1 CFNetwork       0x3137647f __CFURLCache::ExecuteSQLSelectAndCreateResponse(__CFString const*, bool) + 179 
2 CFNetwork       0x313763b1 __CFURLCache::LookupCachedURLResponse(__CFURLCacheNode*, bool) + 13 
3 CFNetwork       0x31387893 __CFURLCache::CopyResponseForRequest(_CFURLRequest const*, bool) + 231 
4 CFNetwork       0x313c2ee1 __CFURLCacheCopyResponseForRequestInternal(_CFURLCache const*, _CFURLRequest const*, unsigned char) + 33 
5 CFNetwork       0x313fe8bd ___loaderEvent_StartLoad_block_invoke_0 + 45 
6 CFNetwork       0x3141e657 ConnectionSession::withStorageSession(void (block_pointer)(StorageSession const*)) const + 83 
7 CFNetwork       0x313ff9d5 __withStorageSessionAsync_block_invoke_0 + 17 
8 CFNetwork       0x313d3639 __withConnectionSessionAsync_block_invoke_0 + 17 
9 libdispatch.dylib     0x3807711f _dispatch_call_block_and_release + 11 
10 libdispatch.dylib     0x3807b961 _dispatch_root_queue_drain + 253 
11 libdispatch.dylib     0x3807bac1 _dispatch_worker_thread2 + 85 
12 libsystem_c.dylib     0x33aaaa11 _pthread_wqthread + 361 

Thread 51: 
0 libsystem_kernel.dylib    0x36830d98 __workq_kernreturn + 8 
1 libsystem_c.dylib     0x33aaaa16 _pthread_wqthread + 366 

Thread 0 crashed with ARM Thread State: 
    r0: 0x00000000  r1: 0x5df80157  r2: 0x1ddd4000  r3: 0x38596026 
    r4: 0x3be2c86c  r5: 0x00000000  r6: 0x00000000  r7: 0x2fd1be1c 
    r8: 0x00000000  r9: 0x00293498 r10: 0x00388800 r11: 0x04432d90 
    ip: 0x3bd68a50  sp: 0x2fd1bde8  lr: 0x368ba395  pc: 0x3abd62be 
    cpsr: 0x60000030 

Ich bin im Grunde ein AFJSONRequestOperation in einem UIViewController verwenden, die auf einen Navigation geschoben wurde, um eine JSON zu holen es seinen Inhalt anzuzeigen. Ist es AFNetworking, das den Absturz verursacht (in Thread 5)? Oder könnte es ein Fehler in meinem Code sein? Ich bin wirklich festgefahren und es passiert ziemlich oft. Jede Hilfe oder Fragen sehr geschätzt!

Answer 1

Überprüfen Sie, ob einige Anzeigen die iTunes geöffnet haben. Vielleicht öffnen Sie zu viele Threads in der Initialisierung Ihrer Anwendung. Sie können versuchen, diese Anfragen in die Warteschlange einzureihen. Nur zufällige Gedanken ..

Answer 2

Es ist kein Problem mit Thread 5 nach dem Absturz; Es ist ein Problem in Thread 0.

Brian in seinem Blog Posting fügt einige Hintergrundinformationen darüber, wie der Timer in Webkit funktioniert.

http://brrian.tumblr.com/post/13951629341/how-webkits-event-model-works

Seine interessant, dass das Problem OS 6.0.1 ist, nicht die neuere Version 6.1, noch 7.x (ab dem Zeitpunkt des Schreibens).

Der Absturz tritt während einer CFRelease auf, und dies tritt häufig auf, wenn eine Ressource freigegeben wurde. Mein Vorschlag ist zu sehen, ob das Problem auf einem neueren Betriebssystem auftritt, da es sich wie ein WebKit-Bug anhört. Webkit ist der Code, der für den Timer verantwortlich ist.

Der Timer-Code wurde überarbeitet sowieso: https://trac.webkit.org/changeset/

Also ich denke, die beste Option, um zu sehen, zu sehen ist, wenn die neueste iOS jemals diesen Absturz hat, oder die neuesten 6.x (6.1).

Wenn dies fehlschlägt und vorausgesetzt, Sie können das Problem nicht reproduzieren, da Sie Netzwerkabfragen (und DB-Abfragen) haben, die klassischen Weg Timer ins Bild kommen, wenn Sie langsam/unzuverlässig Netzwerkverbindung haben. Verwenden Sie den Network Link Conditioner von Apple, um solche Bedingungen zu simulieren. Dies könnte das Problem in WebKit zeigen.