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Editorial Team
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Asked: 2026-05-26T08:47:22+00:00

I need your help to understand what’s going on in this crash log for

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I need your help to understand what’s going on in this crash log for my app on iPhone 4S.

Date/Time:       2011-10-23 07:51:33.669 -0700
OS Version:      iPhone OS 5.0 (9A334)
Report Version:  104

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0xc0000008
Crashed Thread:  0

Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
 0   libobjc.A.dylib                0x3205afbc objc_msgSend + 16
 1   UIKit                          0x31a19b68 -[UIAnimator stopAnimation:] + 412
 2   UIKit                          0x31a195d4 -[UIAnimator(Static) _advance:withTimestamp:] + 260
 3   UIKit                          0x31a194c6 -[UIAnimator(Static) _LCDHeartbeatCallback:] + 46
 4   QuartzCore                     0x3166441c CA::Display::DisplayLink::dispatch(unsigned long long, unsigned long long)+ 160
 5   QuartzCore                     0x31664372 CA::Display::IOMFBDisplayLink::callback(__IOMobileFramebuffer*, unsigned long long, unsigned long long, unsigned long long, void*) + 54
 6   IOMobileFramebuffer            0x32c58f8c IOMobileFramebufferVsyncNotifyFunc + 76
 7   IOKit                          0x34ea188a IODispatchCalloutFromCFMessage + 182
 8   CoreFoundation                 0x36cb9f3c __CFMachPortPerform + 356
 9   CoreFoundation                 0x36cc454c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
10  CoreFoundation                  0x36cc44ee __CFRunLoopDoSource1 + 134
11  CoreFoundation                  0x36cc333c __CFRunLoopRun + 1364
12  CoreFoundation                  0x36c464d6 CFRunLoopRunSpecific + 294
13  CoreFoundation                  0x36c4639e CFRunLoopRunInMode + 98
14  GraphicsServices                0x32921fe6 GSEventRunModal + 150
15  UIKit                           0x318f673c UIApplicationMain + 1084
16  MyAppPro                        0x0000214a main (main.m:13)
17  MyAppPro                        0x00002108 start + 32

This link to a discussion in Developer Forums seems to imply bad hardware!?

A little confused!

Thanks.

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1 Answer

  1. Editorial Team

    Your question is a dupe of many other questions that involve EXC_BAD_ACCESS crashes.

    Like this one:

    how to understand Crash Log of iPhone

    Why not step through your program and see if you can isolate where the crash is triggered?

    The article you linked is talking about a Macintosh error with Safari, totally different than what you are experiencing.

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