EXC_BAD_ACCESS - 随机且难以理解

时间：2016-02-05 07:04:06

标签： c++ ios objective-c crash exc-bad-access

我知道EXC_BAD_ACCESS & Zombie，以及如何find it in normal way。但是我现在面对的是非常混乱，至少对我而言。

背景

我有一个多帐户应用，用户可以同时登录多个帐户。

该应用仅适用于一个帐户，但当用户真正登录越来越多的帐户时，该应用也变得越来越容易受到攻击，随机崩溃，但主要是spring: jpa: database: mysql hibernate: naming-strategy: org.hibernate.cfg.ImprovedNamingStrategy #ddl-auto: create properties: hibernate.format_sql: true show-sql: true datasource: type: com.zaxxer.hikari.HikariDataSource driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql://localhost:3306/test username: test password: test 。不是8badf00d，而是AppLaunch。

代码架构

EXC_BAD_ACCESS (SIGSEGV) / KERN_INVALID_ADDRESS - 应用程序级别，包括UI。
|
Objective-C - 帐户上下文，包括登录逻辑。
|
Objective-C & C++ - 网络/通信级别，包括套接字。

通知＆amp;委派都在级别之间使用。

重现

双击“主页”按钮，将应用程序滑出以将其删除，然后点按应用程序图标以重新启动它。传递C++后，应用会登录帐户，随机崩溃，会导致许多不同的崩溃日志。无论设备是iPhone 6s plus还是iPhone 5s / 5c / 5，iOS 8或iOS 9。

内存使用率不高，只有几十MB。

Crash Log No.1 

TouchId

Crash Log No.2 

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000100000048
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x0000000180b8dbd0 objc_msgSend + 16
1   CoreFoundation                  0x00000001814c7fe0 -[_CFXNotificationObjectRegistration match:matching:] + 152
2   CoreFoundation                  0x0000000181573704 -[_CFXNotificationNameRegistration match:observer:matching:] + 372
3   CoreFoundation                  0x0000000181518778 -[_CFXNotificationRegistrar match:object:observer:enumerator:] + 1968
4   CoreFoundation                  0x0000000181415894 _CFXNotificationRemoveObservers + 164
5   Foundation                      0x0000000181de3510 -[NSNotificationCenter removeObserver:name:object:] + 236
6   Foundation                      0x0000000181df036c -[__NSObserver dealloc] + 48
7   UIKit                           0x000000018639d12c -[_UIBackdropView dealloc] + 280
8   libobjc.A.dylib                 0x0000000180b95ae8 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 508
9   CoreFoundation                  0x00000001813f142c _CFAutoreleasePoolPop + 28
10  UIKit                           0x00000001864bdf94 _prepareForCAFlush + 352
11  UIKit                           0x00000001861fe8f4 _UIApplicationHandleEventQueue + 5880
12  CoreFoundation                  0x00000001814c4efc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
13  CoreFoundation                  0x00000001814c4910 __CFRunLoopDoSources0 + 412
14  CoreFoundation                  0x00000001814c2690 __CFRunLoopRun + 724
15  CoreFoundation                  0x00000001813f1680 CFRunLoopRunSpecific + 384
16  GraphicsServices                0x0000000182900088 GSEventRunModal + 180
17  UIKit                           0x0000000186268d90 UIApplicationMain + 204
18  MultiAccountApp                 0x0000000100095254 main (main.m:19)
19  libdyld.dylib                   0x0000000180f928b8 start + 4

Thread 1:
0   libsystem_pthread.dylib         0x000000018117501c start_wqthread + 0

Thread 2 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 2:
0   libsystem_kernel.dylib          0x00000001810b14fc kevent_qos + 8
1   libdispatch.dylib               0x0000000180f7494c _dispatch_mgr_invoke + 232
2   libdispatch.dylib               0x0000000180f637bc _dispatch_source_invoke + 0

Crash Log No.3 

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x0000000180b7e5f4 _class_getNonMetaClass + 212
1   libobjc.A.dylib                 0x0000000180b7e5f0 _class_getNonMetaClass + 208
2   libobjc.A.dylib                 0x0000000180b7accc _class_resolveMethod + 112
3   libobjc.A.dylib                 0x0000000180b839a8 lookUpImpOrForward + 360
4   libobjc.A.dylib                 0x0000000180b837b4 class_getInstanceMethod + 64
5   Foundation                      0x0000000181e1530c +[NSObject(NSKeyValueObservingCustomization) keyPathsForValuesAffectingValueForKey:] + 236
6   Foundation                      0x0000000181e14ff8 -[NSKeyValueUnnestedProperty _givenPropertiesBeingInitialized:getAffectingProperties:] + 184
7   Foundation                      0x0000000181e14d14 -[NSKeyValueUnnestedProperty _initWithContainerClass:key:propertiesBeingInitialized:] + 152
8   Foundation                      0x0000000181e14bec NSKeyValuePropertyForIsaAndKeyPathInner + 284
9   Foundation                      0x0000000181e11508 NSKeyValuePropertyForIsaAndKeyPath + 152
10  Foundation                      0x0000000181e27ddc _NSKeyValueCreateImplicitObservationInfo + 248
11  CoreData                        0x0000000182fa1764 -[NSManagedObjectContext(_NSInternalNotificationHandling) _implicitObservationInfoForEntity:forResultingClass:] + 300
12  CoreData                        0x0000000182fa162c -[NSManagedObject(_NSInternalMethods) _implicitObservationInfo] + 96
13  Foundation                      0x0000000181de2840 -[NSObject(NSKeyValueObserverNotification) willChangeValueForKey:] + 160
14  CoreData                        0x0000000183002c2c -[NSManagedObject(_NSInternalMethods) _updateFromRefreshSnapshot:includingTransients:] + 628
15  CoreData                        0x0000000183015b54 -[NSManagedObjectContext(_NestedContextSupport) _copyChildObject:toParentObject:fromChildContext:] + 924
16  CoreData                        0x0000000183015f70 -[NSManagedObjectContext(_NestedContextSupport) _parentProcessSaveRequest:inContext:error:] + 996
17  CoreData                        0x0000000183016a44 __82-[NSManagedObjectContext(_NestedContextSupport) executeRequest:withContext:error:]_block_invoke + 348
18  CoreData                        0x0000000183018d80 internalBlockToNSManagedObjectContextPerform + 108
19  libdispatch.dylib               0x0000000180f615f0 _dispatch_client_callout + 16
20  libdispatch.dylib               0x0000000180f70c5c _dispatch_barrier_sync_f_slow_invoke + 644
21  libdispatch.dylib               0x0000000180f615f0 _dispatch_client_callout + 16
22  libdispatch.dylib               0x0000000180f66cf8 _dispatch_main_queue_callback_4CF + 1844
23  CoreFoundation                  0x00000001814c4bb0 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
24  CoreFoundation                  0x00000001814c2a18 __CFRunLoopRun + 1628
25  CoreFoundation                  0x00000001813f1680 CFRunLoopRunSpecific + 384
26  GraphicsServices                0x0000000182900088 GSEventRunModal + 180
27  UIKit                           0x0000000186268d90 UIApplicationMain + 204
28  MultiAccountApp                 0x0000000100085254 main (main.m:19)
29  libdyld.dylib                   0x0000000180f928b8 start + 4

Thread 1:
0   libsystem_kernel.dylib          0x00000001810b0b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000181175530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000181175020 start_wqthread + 4

Thread 2 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 2:
0   libsystem_kernel.dylib          0x00000001810b14fc kevent_qos + 8
1   libdispatch.dylib               0x0000000180f7494c _dispatch_mgr_invoke + 232
2   libdispatch.dylib               0x0000000180f637bc _dispatch_source_invoke + 0

Crash Log No.4 

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000100000038
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x0000000180b8dbd0 objc_msgSend + 16
1   QuartzCore                      0x0000000183c3bad0 CA::Render::String::new_string(__CFString const*) + 36
2   QuartzCore                      0x0000000183c3c46c -[CABackdropLayer _copyRenderLayer:layerFlags:commitFlags:] + 144
3   QuartzCore                      0x0000000183c0ac54 CA::Context::commit_layer(CA::Layer*, unsigned int, unsigned int, void*) + 108
4   QuartzCore                      0x0000000183c079cc CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 392
5   QuartzCore                      0x0000000183c0795c CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 280
6   QuartzCore                      0x0000000183c0795c CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 280
7   QuartzCore                      0x0000000183c0795c CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 280
8   QuartzCore                      0x0000000183c0795c CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 280
9   QuartzCore                      0x0000000183c07750 x_hash_table_foreach + 72
10  QuartzCore                      0x0000000183c06cc8 CA::Transaction::foreach_root(void (*)(CA::Layer*, void*), void*) + 40
11  QuartzCore                      0x0000000183c050f0 CA::Context::commit_transaction(CA::Transaction*) + 1368
12  QuartzCore                      0x0000000183c049dc CA::Transaction::commit() + 512
13  UIKit                           0x00000001864bde20 __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke_2 + 104
14  CoreFoundation                  0x00000001814c4de4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20
15  CoreFoundation                  0x00000001814c471c __CFRunLoopDoBlocks + 308
16  CoreFoundation                  0x00000001814c26a4 __CFRunLoopRun + 744
17  CoreFoundation                  0x00000001813f1680 CFRunLoopRunSpecific + 384
18  GraphicsServices                0x0000000182900088 GSEventRunModal + 180
19  UIKit                           0x0000000186268d90 UIApplicationMain + 204
20  MultiAccountApp                 0x000000010009d254 main (main.m:19)
21  libdyld.dylib                   0x0000000180f928b8 start + 4

Crash Log No.5 

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000100000048
Triggered by Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libobjc.A.dylib                 0x0000000180b8dbd0 objc_msgSend + 16
1   CoreFoundation                  0x00000001813f93e0 -[__NSArrayM dealloc] + 152
2   libobjc.A.dylib                 0x0000000180b95ae8 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 508
3   CoreFoundation                  0x00000001813f142c _CFAutoreleasePoolPop + 28
4   CoreFoundation                  0x00000001814c2a20 __CFRunLoopRun + 1636
5   CoreFoundation                  0x00000001813f1680 CFRunLoopRunSpecific + 384
6   GraphicsServices                0x0000000182900088 GSEventRunModal + 180
7   UIKit                           0x0000000186268d90 UIApplicationMain + 204
8   MultiAccountApp                 0x00000001000f5254 main (main.m:19)
9   libdyld.dylib                   0x0000000180f928b8 start + 4

Thread 1:
0   libsystem_kernel.dylib          0x00000001810b0b6c __workq_kernreturn + 8
1   libsystem_pthread.dylib         0x0000000181175530 _pthread_wqthread + 1284
2   libsystem_pthread.dylib         0x0000000181175020 start_wqthread + 4

虽然我手头有记录，但我仍然不知道如何解决它。也许Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000100000050 Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libobjc.A.dylib 0x0000000180b8dbd0 objc_msgSend + 16 1 CoreFoundation 0x00000001814c7fe0 -[_CFXNotificationObjectRegistration match:matching:] + 152 2 CoreFoundation 0x0000000181573704 -[_CFXNotificationNameRegistration match:observer:matching:] + 372 3 CoreFoundation 0x0000000181518778 -[_CFXNotificationRegistrar match:object:observer:enumerator:] + 1968 4 CoreFoundation 0x0000000181415894 _CFXNotificationRemoveObservers + 164 5 Foundation 0x0000000181de3510 -[NSNotificationCenter removeObserver:name:object:] + 236 6 UIKit 0x00000001863a0948 -[UINavigationController dealloc] + 140 7 CoreFoundation 0x00000001813f5380 -[__NSArrayI dealloc] + 80 8 UIKit 0x00000001864b0cb4 _runAfterCACommitDeferredBlocks + 616 9 UIKit 0x00000001864be030 _cleanUpAfterCAFlushAndRunDeferredBlocks + 92 10 CoreFoundation 0x00000001814c4de4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 20 11 CoreFoundation 0x00000001814c471c __CFRunLoopDoBlocks + 308 12 CoreFoundation 0x00000001814c26a4 __CFRunLoopRun + 744 13 CoreFoundation 0x00000001813f1680 CFRunLoopRunSpecific + 384 14 GraphicsServices 0x0000000182900088 GSEventRunModal + 180 15 UIKit 0x0000000186268d90 UIApplicationMain + 204 16 MultiAccountApp 0x0000000100099254 main (main.m:19) 17 libdyld.dylib 0x0000000180f928b8 start + 4 已经脏了？是否被C ++级别强制/无意修改？

提前致谢。

0 个答案:

没有答案
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