Como posso ler um relatório de falha para ter uma idéia do que aconteceu?
Exemplo de relatório de falha higienizada:
Process: SoftwareUpdateCheck [16198]
Path: /System/Library/CoreServices/Software Update.app/Contents/Resources/SoftwareUpdateCheck
Identifier: SoftwareUpdateCheck
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: launchd [199]
Date/Time: 2010-09-01 21:23:45.353 -0600
OS Version: Mac OS X 10.6.4 (10F569)
Report Version: 6
Interval Since Last Report: 112357 sec
Crashes Since Last Report: 2
Per-App Crashes Since Last Report: 1
Anonymous UUID: 0ED5F3B8-BF2C-450D-9178-740EECC74D2E
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: 0x000000000000000d, 0x0000000000000000
Crashed Thread: 6
Application Specific Information:
objc_msgSend() selector name: respondsToSelector:
Thread 0: Dispatch queue: com.apple.main-thread
0 com.apple.CoreFoundation 0x00007fff84457869 __CFStrConvertBytesToUnicode + 41
1 com.apple.CoreFoundation 0x00007fff8446e79d _CFPropertyListCreateFromXMLStringError + 2349
2 com.apple.CoreFoundation 0x00007fff8446d440 _CFPropertyListCreateWithData + 416
3 com.apple.CFNetwork 0x00007fff88eabe34 MemoryCookies::inflateFromData(__CFData const*) + 48
4 com.apple.CFNetwork 0x00007fff88eab920 DiskCookieStorage::syncStorageLocked(unsigned char) + 440
5 com.apple.CFNetwork 0x00007fff88ebb6b7 PrivateHTTPCookieStorage::syncStorage() + 45
6 com.apple.CFNetwork 0x00007fff88ebb616 _CFHTTPCookieStorageFlushCookieStores + 136
7 libSystem.B.dylib 0x00007fff8183c7ff __cxa_finalize + 214
8 libSystem.B.dylib 0x00007fff8183c70c exit + 18
9 SoftwareUpdateCheck 0x0000000100001767 0x100000000 + 5991
Thread 1: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x00007fff8184308a kevent + 10
1 libSystem.B.dylib 0x00007fff81844f5d _dispatch_mgr_invoke + 154
2 libSystem.B.dylib 0x00007fff81844c34 _dispatch_queue_invoke + 185
3 libSystem.B.dylib 0x00007fff8184475e _dispatch_worker_thread2 + 252
4 libSystem.B.dylib 0x00007fff81844088 _pthread_wqthread + 353
5 libSystem.B.dylib 0x00007fff81843f25 start_wqthread + 13
Thread 2:
0 libSystem.B.dylib 0x00007fff81843eaa __workq_kernreturn + 10
1 libSystem.B.dylib 0x00007fff818442bc _pthread_wqthread + 917
2 libSystem.B.dylib 0x00007fff81843f25 start_wqthread + 13
Thread 3:
0 libSystem.B.dylib 0x00007fff8182a2fa mach_msg_trap + 10
1 libSystem.B.dylib 0x00007fff8182a96d mach_msg + 59
2 com.apple.CoreFoundation 0x00007fff8449b3c2 __CFRunLoopRun + 1698
3 com.apple.CoreFoundation 0x00007fff8449a84f CFRunLoopRunSpecific + 575
4 com.apple.Foundation 0x00007fff875bb4c3 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 297
5 com.apple.Foundation 0x00007fff8753be8d __NSThread__main__ + 1429
6 libSystem.B.dylib 0x00007fff81863456 _pthread_start + 331
7 libSystem.B.dylib 0x00007fff81863309 thread_start + 13
Thread 4:
0 libSystem.B.dylib 0x00007fff8186ddce select$DARWIN_EXTSN + 10
1 com.apple.CoreFoundation 0x00007fff844bce92 __CFSocketManager + 818
2 libSystem.B.dylib 0x00007fff81863456 _pthread_start + 331
3 libSystem.B.dylib 0x00007fff81863309 thread_start + 13
Thread 5:
0 libSystem.B.dylib 0x00007fff81843eaa __workq_kernreturn + 10
1 libSystem.B.dylib 0x00007fff818442bc _pthread_wqthread + 917
2 libSystem.B.dylib 0x00007fff81843f25 start_wqthread + 13
Thread 6 Crashed:
0 libobjc.A.dylib 0x00007fff80ff31d8 objc_msgSend_vtable5 + 16
1 ...le.SoftwareUpdate.framework 0x00007fff84335662 -[SUSession(CallbackDispatching) _dispatchDelegateCallbackOnMainThread:withObject:withObject:withObject:] + 80
2 ...le.SoftwareUpdate.framework 0x00007fff84335c29 -[SUSessionImpl remoteProductDownloadOperationDidEnd:] + 145
3 ...le.SoftwareUpdate.framework 0x00007fff84338aed -[SUProductDownloadOperation main] + 1547
4 ...le.SoftwareUpdate.framework 0x00007fff84336592 -[SUSessionImpl downloadAndVerifyAllProductsSync:] + 396
5 ...le.SoftwareUpdate.framework 0x00007fff8433535d -[SUSession(MainThread) _sessionMain:] + 850
6 com.apple.Foundation 0x00007fff8753be8d __NSThread__main__ + 1429
7 libSystem.B.dylib 0x00007fff81863456 _pthread_start + 331
8 libSystem.B.dylib 0x00007fff81863309 thread_start + 13
Thread 6 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000020 rbx: 0x0000000111b24cc8 rcx: 0x00000001001e4250 rdx: 0x00007fff843473cd
rdi: 0x0000000111b744f0 rsi: 0x00007fff8707ed40 rbp: 0x00000001007a67c0 rsp: 0x00000001007a6768
r8: 0x00007fff707ef8c0 r9: 0x0000000111a30940 r10: 0x00000001001c89f9 r11: 0x8600007fff70e241
r12: 0x00000001001e4250 r13: 0x0000000111a30940 r14: 0x00007fff707ef8c0 r15: 0x00000001001e4250
rip: 0x00007fff80ff31d8 rfl: 0x0000000000010206 cr2: 0x000000012b786b10
Binary Images:
0x100000000 - 0x100002fff SoftwareUpdateCheck ??? (???) <99185DEE-8BB2-9437-0C4B-27DF3EF53C94> /System/Library/CoreServices/Software Update.app/Contents/Resources/SoftwareUpdateCheck
0x7fff5fc00000 - 0x7fff5fc3bdef dyld 132.1 (???) <B536F2F1-9DF1-3B6C-1C2C-9075EA219A06> /usr/lib/dyld
0x7fff80066000 - 0x7fff80066ff7 com.apple.vecLib 3.6 (vecLib 3.6) <96FB6BAD-5568-C4E0-6FA7-02791A58B584> /System/Library/Frameworks/vecLib.framework/Versions/A/vecLib
0x7fff80067000 - 0x7fff80085fff libPng.dylib ??? (???) <F6932C8D-E6B1-0871-B698-15180AA948F7>
.... MORE FRAMEWORKS
System Profile:
COMPUTER DETAILS HERE
A linha 2 diz que a Atualização de Software estava em execução e mostra a imagem (Caminho) da qual foi carregada. A linha 6, processo pai, diz que foi executada pelo daemon de inicialização, ou seja, uma execução agendada, não iniciada manualmente por você.
O tipo de exceção, SIGSEGV, é uma violação do segmento - o programa tentou acessar alguma memória diferente da que foi alocada a ele pelo sistema operacional. Possivelmente, ele usou um ponteiro não inicializado, ou um endereço de retorno ou algum outro ponteiro foi sobrescrito, o que poderia acontecer se um buffer na pilha de programas fosse excedido.
O restante das informações é praticamente inútil sem o código-fonte e um mapa de carga, ou seja, é de interesse de um programador tentar descobrir como ocorreu a falha, mas não é muito útil para o resto de nós.
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