SIGSEGV SEGV_ACCERR Error - there is no way from the link to the application

Question

There is no method from my application in this crash report, and I could not reproduce it. Some of my users have the same crash. I can not find any cells of the scroll list table or anywhere I use spring. Where could this crash come from?

Incident Identifier: 748D4582-3868-42BD-BF98-B3B47895954D CrashReporter Key: F7F44964-E877-4C7A-881C-91EBC4261080 Hardware Model: iPhone5,1 Process: MyApp [2415] Path: /Users/USER/MyApp.app/MyApp Identifier: com.mycom.myapp Version: 1.5.1 Code Type: ARM Parent Process: launchd [1] Date/Time: 2013-11-21 05:30:47 +0000 OS Version: iPhone OS 7.0.4 (11B554a) Report Version: 104 Exception Type: SIGSEGV Exception Codes: SEGV_ACCERR at 0x5000000c Crashed Thread: 0 Thread 0 Crashed: 0 libobjc.A.dylib 0x3921fb66 objc_msgSend + 5 1 UIKit 0x3177e315 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 409 2 UIKit 0x317266cd -[UITableView _updateVisibleCellsNow:] + 1800 3 UIKit 0x31719f75 -[UITableView _visibleCells] + 24 4 UIKit 0x31783f13 -[UITableView indexPathForCell:] + 26 5 UIKit 0x31782289 -[UITableViewCell _canDoSeparatorLayout] + 64 6 UIKit 0x31781e19 -[UITableViewCell _updateSeparatorContent] + 56 7 UIKit 0x31844a3b -[UITableViewCell _updateViewsForDeleteButton] + 218 8 UIKit 0x3171c673 -[UITableViewCellScrollView setContentOffset:] + 186 9 UIKit 0x31880561 __43-[UITableViewCell _animateSwipeCancelation]_block_invoke + 81 10 UIKit 0x31681113 +[UIView _setupAnimationWithDuration:delay:view:options:factory:animations:start:animationStateGenerator:completion:] + 490 11 UIKit 0x317a66ef +[UIView _animateUsing WithDuration:delay:options:mass:stiffness:damping:initialVelocity:animations:start:completion:] + 166 12 UIKit 0x317a663f +[UIView _animateUsingSpringWithDuration:delay:options:mass:stiffness:damping:initialVelocity:animations:completion:] + 90 13 UIKit 0x318804bf -[UITableViewCell _animateSwipeCancelation] + 278 14 UIKit 0x31850639 -[UITableView _endSwipeToDeleteRowDidDelete:] + 216 15 UIKit 0x31901873 -[UITableView willMoveToSuperview:] + 62 16 UIKit 0x318e1913 __UIViewWillBeRemovedFromSuperview + 151 17 UIKit 0x3164a091 -[UIView removeFromSuperview] + 56 18 UIKit 0x3171e431 -[UIScrollView removeFromSuperview] + 64 19 UIKit 0x3164c9b3 -[UIView dealloc] + 366 20 libobjc.A.dylib 0x39221023 (anonymous namespace)::AutoreleasePoolPage::pop(void*) + 359 21 CoreFoundation 0x2edfb1c9 _CFAutoreleasePoolPop + 16 22 CoreFoundation 0x2ee90e83 __CFRunLoopRun + 1315 23 CoreFoundation 0x2edfb471 CFRunLoopRunSpecific + 524 24 CoreFoundation 0x2edfb253 CFRunLoopRunInMode + 106 25 GraphicsServices 0x33b352eb GSEventRunModal + 138 26 UIKit 0x316b0845 UIApplicationMain + 1136 27 MyApp 0x000e810b main (main.m:5) 28 libdyld.dylib 0x3971dab7 start + 3 Thread 1: 0 libsystem_kernel.dylib 0x397c1838 kevent64 + 24 1 libdispatch.dylib 0x3970a623 _dispatch_mgr_thread + 39 Thread 2: 0 libsystem_kernel.dylib 0x397d4c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x39838cc4 start_wqthread + 8 Thread 3: 0 libsystem_kernel.dylib 0x397d4c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x39838cc4 start_wqthread + 8 Thread 4: 0 libsystem_kernel.dylib 0x397d4c7c __workq_kernreturn + 8 1 libsystem_pthread.dylib 0x39838cc4 start_wqthread + 8 Thread 5: 0 libsystem_kernel.dylib 0x397c1a84 mach_msg_trap + 20 1 CoreFoundation 0x2ee92559 __CFRunLoopServiceMachPort + 157 2 CoreFoundation 0x2ee90c79 __CFRunLoopRun + 793 3 CoreFoundation 0x2edfb471 CFRunLoopRunSpecific + 524 4 CoreFoundation 0x2ee3f0db CFRunLoopRun + 98 5 CoreMotion 0x2f4b3369 CLSF_thorntonUpdate_6x6 + 57225 6 libsystem_pthread.dylib 0x3983ac5d _pthread_body + 141 7 libsystem_pthread.dylib 0x3983abcf _pthread_start + 102 8 libsystem_pthread.dylib 0x39838cd0 thread_start + 8 Thread 0 crashed with ARM Thread State: pc: 0x3921fb66 r7: 0x27d21618 sp: 0x27d215f4 r0: 0x17f82270 r1: 0x31c343d7 r2: 0x189d9e00 r3: 0x17d46730 r4: 0x189d9e00 r5: 0x00000338 r6: 0x17e0e340 r8: 0x39e43294 r9: 0x50000000 r10: 0x17d46730 r11: 0x000001d0 ip: 0x39d3e220 lr: 0x3177e315 cpsr: 0x20000030 

Answer 1

Here is what I see in the crash report:

• The crash is caused by bei SIGSEGV in objc_msgSend . This means that the application is trying to send a message to an invalid object. This means that you have at least one memory problem in your application (somewhere).

• It seems that the problem occurs when you try to delete a row in the View table by scrolling to delete gestures, see -[UITableView _endSwipeToDeleteRowDidDelete:] displayed in the stack trace, and additional tips above, for example -[UITableViewCell _animateSwipeCancelation] , -[UITableViewCell _updateViewsForDeleteButton] .

Therefore, it might be worth a try to test this use case in all the table views in your application.

In addition, use the Analyze Xcode function and fix all the warnings it shows, and also try to run the application using Enable Zombie Objects . There are many websites, as well as answers here on SO explaining how to do this.