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POWhat's the difference between KERN_INVALID_ADDRESS and KERN_PROTECTION_FAILURE?
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  1. POWhat's the difference between KERN_INVALID_ADDRESS and KERN_PROTECTION_FAILURE?
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    copied!<p>What's the difference between <code>KERN_INVALID_ADDRESS</code> and <code>KERN_PROTECTION_FAILURE</code> on iPhone OS?</p> <p>I have two crash reports from an ad-hoc beta tester that are 5 minutes apart and the main difference between them (other than the "Binary Images:" section) is this section:</p> <p>Report A:</p> <pre><code>Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x00000008 </code></pre> <p>Report B:</p> <pre><code>Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Codes: KERN_INVALID_ADDRESS at 0x67696c69 </code></pre> <p>For what it's worth, both have this trace:</p> <pre><code>Thread 0 Crashed: 0 libobjc.A.dylib 0x30011940 objc_msgSend + 20 1 UIKit 0x30940174 -[UIWindow _shouldAutorotateToInterfaceOrientation:] + 60 2 UIKit 0x30a223d8 -[UIWindow _updateToInterfaceOrientation:duration:force:] + 36 3 UIKit 0x30958638 -[UIWindow _updateInterfaceOrientationFromDeviceOrientation] + 112 4 UIKit 0x30942514 -[UIWindow _handleDeviceOrientationChange:] + 72 5 Foundation 0x3054dc7a _nsnote_callback + 178 6 CoreFoundation 0x3024ea52 _CFXNotificationPostNotification + 298 7 Foundation 0x3054b854 -[NSNotificationCenter postNotificationName:object:userInfo:] + 64 8 UIKit 0x309414a4 -[UIDevice setOrientation:] + 124 9 UIKit 0x30938330 -[UIApplication handleEvent:withNewEvent:] + 5232 10 UIKit 0x30936ce8 -[UIApplication sendEvent:] + 60 11 UIKit 0x30936874 _UIApplicationHandleEvent + 4336 12 GraphicsServices 0x32046964 PurpleEventCallback + 1028 13 CoreFoundation 0x30254a70 CFRunLoopRunSpecific + 2296 14 CoreFoundation 0x30254164 CFRunLoopRunInMode + 44 15 GraphicsServices 0x3204529c GSEventRunModal + 188 16 UIKit 0x308f0374 -[UIApplication _run] + 552 17 UIKit 0x308eea8c UIApplicationMain + 960 18 MyApp 0x00015e24 0x1000 + 85540 19 MyApp 0x0000f138 0x1000 + 57656 </code></pre> <p>Also, I do not implement the "shouldAutorotateToInterfaceOrientation:" method anywhere in my code.</p>
 

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