iPhone app crash on iOS 4.0 <p>All crash reports submitted for our application on iOS 4.0 are giving the below information:</p> <pre><code>Application Specific Information: &lt;my app name&gt;[3532] was suspended with locked system files: /private/var/mobile/Library/AddressBook/AddressBook.sqlitedb </code></pre> <p>Any idea what this indicates and what could be the possible cause of crash. Our application is not interacting with AddressBook.sqlitedb at all.</p> <p>The complete crash log:</p> <pre><code>Exception Type: 00000020 Exception Codes: 0xdead10cc Highlighted Thread: 0 Application Specific Information: app name[3532] was suspended with locked system files: /private/var/mobile/Library/AddressBook/AddressBook.sqlitedb Thread 0: 0 libobjc.A.dylib 0x3302e4ac object_dispose 1 CoreFoundation 0x31372cfe -[NSObject(NSObject) dealloc] 2 QuartzCore 0x33e45264 -[CALayer dealloc] 3 QuartzCore 0x33eb5e60 -[CALayer _dealloc] 4 QuartzCore 0x33e3c752 CALayerRelease 5 QuartzCore 0x33e3cd20 CA::release_root_if_unused(_CALayer*, _CALayer*, void*) 6 QuartzCore 0x33e3ccbc x_hash_table_remove_if 7 QuartzCore 0x33e3cb26 CA::Transaction::commit() 8 QuartzCore 0x33e42406 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) 9 CoreFoundation 0x313caa42 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 10 CoreFoundation 0x313cc46e __CFRunLoopDoObservers 11 CoreFoundation 0x313cd774 __CFRunLoopRun 12 CoreFoundation 0x313768e4 CFRunLoopRunSpecific 13 CoreFoundation 0x313767ec CFRunLoopRunInMode 14 GraphicsServices 0x329f36e8 GSEventRunModal 15 GraphicsServices 0x329f3794 GSEventRun 16 UIKit 0x316692a0 -[UIApplication _run] 17 UIKit 0x31667e10 UIApplicationMain 18 app name 0x00002a64 main + 36 19 app name 0x00002a34 start + 32 Thread 1: 0 libSystem.B.dylib 0x35228c4c kevent + 24 1 libSystem.B.dylib 0x352d1e44 _dispatch_mgr_invoke 2 libSystem.B.dylib 0x352d1894 _dispatch_queue_invoke 3 libSystem.B.dylib 0x352d1a34 _dispatch_worker_thread2 4 libSystem.B.dylib 0x35275d82 _pthread_wqthread 5 libSystem.B.dylib 0x3526efcc start_wqthread + 0 Thread 2: 0 libSystem.B.dylib 0x351fc6b4 semaphore_wait_signal_trap + 8 1 libSystem.B.dylib 0x35229d92 semaphore_wait_signal 2 libSystem.B.dylib 0x351fe4a4 pthread_mutex_lock 3 WebCore 0x30138194 _WebTryThreadLock(bool) 4 WebCore 0x301380da WebRunLoopLock(__CFRunLoopObserver*, unsigned long, void*) 5 CoreFoundation 0x313caa42 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ 6 CoreFoundation 0x313cc46e __CFRunLoopDoObservers 7 CoreFoundation 0x313cd780 __CFRunLoopRun 8 CoreFoundation 0x313768e4 CFRunLoopRunSpecific 9 CoreFoundation 0x313767ec CFRunLoopRunInMode 10 WebCore 0x30138056 RunWebThread(void*) 11 libSystem.B.dylib 0x35275986 _pthread_start 12 libSystem.B.dylib 0x3526b0e4 thread_start + 0 Thread 3: 0 libSystem.B.dylib 0x351fc658 mach_msg_trap + 20 1 libSystem.B.dylib 0x351fe724 mach_msg 2 CoreFoundation 0x313cb2c8 __CFRunLoopServiceMachPort 3 CoreFoundation 0x313cd582 __CFRunLoopRun 4 CoreFoundation 0x313768e4 CFRunLoopRunSpecific 5 CoreFoundation 0x313767ec CFRunLoopRunInMode 6 Foundation 0x3329571e +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] 7 Foundation 0x33265c96 -[NSThread main] 8 Foundation 0x332ea9da __NSThread__main__ 9 libSystem.B.dylib 0x35275986 _pthread_start 10 libSystem.B.dylib 0x3526b0e4 thread_start + 0 Thread 4: 0 libSystem.B.dylib 0x35220a20 select$DARWIN_EXTSN + 20 1 CoreFoundation 0x313d0e70 __CFSocketManager 2 libSystem.B.dylib 0x35275986 _pthread_start 3 libSystem.B.dylib 0x3526b0e4 thread_start + 0 Thread 5: 0 libSystem.B.dylib 0x3527685c __workq_kernreturn + 8 1 libSystem.B.dylib 0x35275e98 _pthread_wqthread 2 libSystem.B.dylib 0x3526efcc start_wqthread + 0 Thread 6: 0 libSystem.B.dylib 0x3527685c __workq_kernreturn + 8 1 libSystem.B.dylib 0x35275e98 _pthread_wqthread 2 libSystem.B.dylib 0x3526efcc start_wqthread + 0 Thread 7: 0 libSystem.B.dylib 0x35205974 access + 8 1 libsqlite3.dylib 0x3282f5a6 unixAccess 2 libsqlite3.dylib 0x32826e5a sqlite3OsAccess 3 libsqlite3.dylib 0x32835bf0 sqlite3BtreeBeginTrans 4 libsqlite3.dylib 0x3284f038 sqlite3Step 5 libsqlite3.dylib 0x3282639c sqlite3_step 6 AppSupport 0x31475634 CPSqliteStatementCopyStringResult 7 AppSupport 0x3147626e CPSqliteConnectionCopyValueForProperty 8 AppSupport 0x314773a2 CPSqliteDatabaseCopyValueForProperty 9 AppSupport 0x314773ba CPSqliteDatabaseCopyUniqueIdentifier 10 AddressBook 0x34dd7c3a ABCCreateAddressBookWithDatabaseDirectoryAndForceInProcessMigrationAndResetSortKeys 11 AddressBook 0x34dd7eba ABCCreateAddressBookWithDatabaseDirectoryAndForceInProcessMigration 12 AddressBook 0x34dd7ec8 ABCCreateAddressBookWithDatabaseDirectory 13 AddressBook 0x34de3e78 ABAddressBookCreate 14 TextInput 0x34973fb8 KB::matchable_strings_from_address_book() 15 TextInput 0x34978686 KB::DynamicDictionaryImpl::background_load_address_book(KB::StaticDictionary const&amp;) 16 TextInput 0x34979d36 KB::BackgroundLoad(void*) 17 libSystem.B.dylib 0x35275986 _pthread_start 18 libSystem.B.dylib 0x3526b0e4 thread_start + 0 Unknown thread crashed with unknown flavor: 5, state_count: 1 Binary Images: 0x1000 - 0x41fff +CVCrDVR armv6 &lt;4ca92ed88199f56c60997ff21ed9963e&gt; /var/mobile/Applications/6EF0091E-FE47-43B7-8515-08688A530869/CVCrDVR.app/CVCrDVR 0xeb000 - 0xecfff dns.so armv7 &lt;240b8d3f07b4fcb234de598f8e67de1a&gt; /usr/lib/info/dns.so 0xf0000 - 0xf4fff AccessibilitySettingsLoader armv7 &lt;9e7d0552cedc18ba0b26cd182c47df8d&gt; /System/Library/AccessibilityBundles/AccessibilitySettingsLoader.bundle/AccessibilitySettingsLoader 0x2fe00000 - 0x2fe26fff dyld armv7 &lt;193570c1391880df7da870149117e49e&gt; /usr/lib/dyld 0x30135000 - 0x30686fff WebCore armv7 &lt;859bdd351085819fb4da07d12b41543f&gt; /System/Library/PrivateFrameworks/WebCore.framework/WebCore 0x30ac5000 - 0x30adafff libresolv.9.dylib armv7 &lt;1ed920d5a995cd94e71c41631d7c551e&gt; /usr/lib/libresolv.9.dylib 0x30adc000 - 0x30bc4fff libGLProgrammability.dylib armv7 &lt;9bcf5fe3e7abc344425e581ff2896579&gt; /System/Library/Frameworks/OpenGLES.framework/libGLProgrammability.dylib 0x30ca5000 - 0x30d4bfff WebKit armv7 &lt;a1d04572b3214188f60f2d1961ac1fe8&gt; /System/Library/PrivateFrameworks/WebKit.framework/WebKit 0x30eb4000 - 0x30f76fff CFNetwork armv7 &lt;9fdd61632fd1b48d65daba561528946f&gt; /System/Library/Frameworks/CFNetwork.framework/CFNetwork 0x31297000 - 0x3129cfff MobileKeyBag armv7 &lt;d33678689445fcf1898314262fd1ebd3&gt; /System/Library/PrivateFrameworks/MobileKeyBag.framework/MobileKeyBag 0x3129f000 - 0x312e7fff libBLAS.dylib armv7 &lt;3b4a2849c10d100a178a3c2d9f6af523&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libBLAS.dylib 0x312ea000 - 0x31358fff ProofReader armv7 &lt;479bd40ac65cb7e6c3000d79d649571f&gt; /System/Library/PrivateFrameworks/ProofReader.framework/ProofReader 0x31359000 - 0x3142bfff CoreFoundation armv7 &lt;17c9c36ae8824496b507446869cd4d9d&gt; /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation 0x31472000 - 0x314a0fff AppSupport armv7 &lt;2a64271b39599b2180d0dfd3141027ee&gt; /System/Library/PrivateFrameworks/AppSupport.framework/AppSupport 0x31663000 - 0x3280dfff UIKit armv7 &lt;6c767127e477e6ac7b7f083857ca8064&gt; /System/Library/Frameworks/UIKit.framework/UIKit 0x32824000 - 0x32868fff libsqlite3.dylib armv7 &lt;36b9bc7d02e29c8d321dd0d7bf7e115e&gt; /usr/lib/libsqlite3.dylib 0x3286b000 - 0x3286dfff IOMobileFramebuffer armv7 &lt;1fdf9182a63464743901526caf39240a&gt; /System/Library/PrivateFrameworks/IOMobileFramebuffer.framework/IOMobileFramebuffer 0x329b6000 - 0x329ccfff RawCamera armv7 &lt;78168f60a21e67ce307c5ce30054dba6&gt; /System/Library/CoreServices/RawCamera.bundle/RawCamera 0x329dc000 - 0x329e2fff liblockdown.dylib armv7 &lt;df3c6cea5e6848109a6e033e1d883320&gt; /usr/lib/liblockdown.dylib 0x329e3000 - 0x329ebfff libgcc_s.1.dylib armv7 &lt;b8fc1381e87a55740d9ac66195039a63&gt; /usr/lib/libgcc_s.1.dylib 0x329f0000 - 0x329fbfff GraphicsServices armv7 &lt;7194df9e594ae0fd9d9c600ccf456a08&gt; /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices 0x329fc000 - 0x32a46fff libstdc++.6.dylib armv7 &lt;baab09769f92decea73680bc15aa8618&gt; /usr/lib/libstdc++.6.dylib 0x32ad3000 - 0x32ad5fff libAccessibility.dylib armv7 &lt;06dd6032c40b1feb094d63eeb2002d6d&gt; /usr/lib/libAccessibility.dylib 0x32b17000 - 0x32b59fff CoreTelephony armv7 &lt;bc8796c8e011fea9923170d3c948a694&gt; /System/Library/Frameworks/CoreTelephony.framework/CoreTelephony 0x32b98000 - 0x32b9bfff IOSurface armv7 &lt;e67242f81fd1c0fa5e84b3fae5d310ae&gt; /System/Library/PrivateFrameworks/IOSurface.framework/IOSurface 0x32bb6000 - 0x32bb6fff vecLib armv7 &lt;85f89752df7814c1b243c26f59388523&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/vecLib 0x32bd1000 - 0x32bdbfff ExternalAccessory armv7 &lt;56a0856978d36be40c42834de8ab966d&gt; /System/Library/Frameworks/ExternalAccessory.framework/ExternalAccessory 0x32de8000 - 0x32f06fff CoreGraphics armv7 &lt;4022bbf12f11dd1f6b75662c764e7f7c&gt; /System/Library/Frameworks/CoreGraphics.framework/CoreGraphics 0x32f20000 - 0x32f2dfff DataDetectorsUI armv7 &lt;8f6e03c382591e1f30f06e97b4b31570&gt; /System/Library/PrivateFrameworks/DataDetectorsUI.framework/DataDetectorsUI 0x3302b000 - 0x330cbfff libobjc.A.dylib armv7 &lt;89553a61e05078fd178ac0ea2081ae40&gt; /usr/lib/libobjc.A.dylib 0x3325a000 - 0x33379fff Foundation armv7 &lt;c985a61696030b4d1bdc8fe010f4e43b&gt; /System/Library/Frameworks/Foundation.framework/Foundation 0x3337c000 - 0x3338efff VoiceServices armv7 &lt;f5b5b032e4c0b79c42e0fde5a59a6eb3&gt; /System/Library/PrivateFrameworks/VoiceServices.framework/VoiceServices 0x3344f000 - 0x33489fff IOKit armv7 &lt;5e0169de165c2fd25a2ddac1f3e19d06&gt; /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit 0x33641000 - 0x33680fff libGLImage.dylib armv7 &lt;b96f5e231a3e39677b5e3621d61d2f11&gt; /System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib 0x33681000 - 0x33683fff MobileInstallation armv7 &lt;74e2bd725da63513053b4fa41d8cd89c&gt; /System/Library/PrivateFrameworks/MobileInstallation.framework/MobileInstallation 0x3368e000 - 0x3371bfff ImageIO armv7 &lt;abf07fc0430aaf2a2823753c78061aac&gt; /System/Library/Frameworks/ImageIO.framework/ImageIO 0x33850000 - 0x33969fff libicucore.A.dylib armv7 &lt;c4f4fd74dfa672fb4d84914585bbada5&gt; /usr/lib/libicucore.A.dylib 0x33c6f000 - 0x33c87fff libRIP.A.dylib armv7 &lt;436e3b257ba088ca6f773961ce619892&gt; /System/Library/Frameworks/CoreGraphics.framework/Resources/libRIP.A.dylib 0x33c88000 - 0x33c8bfff libGFXShared.dylib armv7 &lt;12f82e44ff36b29f8d0661878be83554&gt; /System/Library/Frameworks/OpenGLES.framework/libGFXShared.dylib 0x33c90000 - 0x33c9cfff DataDetectorsCore armv7 &lt;bc6bff5b67aae8b97a8cdd43ed7b0bb1&gt; /System/Library/PrivateFrameworks/DataDetectorsCore.framework/DataDetectorsCore 0x33e36000 - 0x33edefff QuartzCore armv7 &lt;109b4f6a3d2ee5aa1bb5775ab5a489bc&gt; /System/Library/Frameworks/QuartzCore.framework/QuartzCore 0x33ee2000 - 0x33f8bfff libxml2.2.dylib armv7 &lt;1d74fa3a5cec309857503a51cb2df667&gt; /usr/lib/libxml2.2.dylib 0x34035000 - 0x342cffff libLAPACK.dylib armv7 &lt;fbc3f7ad1260a159d75be53218fa9e0c&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libLAPACK.dylib 0x343a8000 - 0x343b1fff CoreVideo armv7 &lt;58180e899ec56cd8bca00221dea2bc32&gt; /System/Library/Frameworks/CoreVideo.framework/CoreVideo 0x343ee000 - 0x3442cfff libvDSP.dylib armv7 &lt;cc8d6be7a5021266e26ebd05e9579852&gt; /System/Library/Frameworks/Accelerate.framework/Frameworks/vecLib.framework/libvDSP.dylib 0x3442d000 - 0x34435fff libkxld.dylib armv7 &lt;4ec35c4d1e1e73416aea84537829ce91&gt; /usr/lib/system/libkxld.dylib 0x34438000 - 0x34445fff OpenGLES armv7 &lt;e397de408a0a789f816bc1803ae58faf&gt; /System/Library/Frameworks/OpenGLES.framework/OpenGLES 0x344e8000 - 0x34521fff MobileCoreServices armv7 &lt;d38c937ae3548777da263d2657536189&gt; /System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices 0x3456c000 - 0x3459bfff CoreText armv7 &lt;76eb1b63d684c3d21dba9e8129666d2f&gt; /System/Library/Frameworks/CoreText.framework/CoreText 0x3459c000 - 0x345d2fff Security armv7 &lt;7cea1027f1a381b8d6c5ffae4dae0d22&gt; /System/Library/Frameworks/Security.framework/Security 0x3473c000 - 0x347dbfff JavaScriptCore armv7 &lt;894df23ebbc4df713d9519141a61dd19&gt; /System/Library/PrivateFrameworks/JavaScriptCore.framework/JavaScriptCore 0x347dc000 - 0x347ddfff CoreSurface armv7 &lt;042e433142b7faa4c96b23e555faaf13&gt; /System/Library/PrivateFrameworks/CoreSurface.framework/CoreSurface 0x34844000 - 0x3484bfff libbz2.1.0.dylib armv7 &lt;5d079712f5a39708647292bccbd4c4e0&gt; /usr/lib/libbz2.1.0.dylib 0x3487c000 - 0x348aafff SystemConfiguration armv7 &lt;2b44ac2fc47fc45c4006d08019688dbb&gt; /System/Library/Frameworks/SystemConfiguration.framework/SystemConfiguration 0x348ac000 - 0x348b7fff libz.1.dylib armv7 &lt;19a78978d5908bedc6496470fe542936&gt; /usr/lib/libz.1.dylib 0x348e9000 - 0x34929fff CoreAudio armv7 &lt;1723726845b73efbeca75b33d75f335a&gt; /System/Library/Frameworks/CoreAudio.framework/CoreAudio 0x3493e000 - 0x3496cfff libCGFreetype.A.dylib armv7 &lt;475259824770c6ff1b63f30238b3ea81&gt; /System/Library/Frameworks/CoreGraphics.framework/Resources/libCGFreetype.A.dylib 0x3496d000 - 0x349a3fff TextInput armv7 &lt;949f29588014140b606042685de1dee6&gt; /System/Library/PrivateFrameworks/TextInput.framework/TextInput 0x349a4000 - 0x349c3fff Bom armv7 &lt;c73b68b11b2801cefbfbdb6328a7fcfb&gt; /System/Library/PrivateFrameworks/Bom.framework/Bom 0x34dd5000 - 0x34e07fff AddressBook armv7 &lt;3dde743216bbf016019b59f821dda6e3&gt; /System/Library/Frameworks/AddressBook.framework/AddressBook 0x34f43000 - 0x34f4ffff SpringBoardServices armv7 &lt;7624f0a9e197261f2df43edb86ba0256&gt; /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices 0x34f50000 - 0x34f5dfff libbsm.0.dylib armv7 &lt;27ad6b3a74ce1068586eabd6a553183f&gt; /usr/lib/libbsm.0.dylib 0x34f5e000 - 0x34f64fff IAP armv7 &lt;42a87fc47e059f5a73dcff2227b9e0be&gt; /System/Library/PrivateFrameworks/IAP.framework/IAP 0x3502d000 - 0x35151fff AudioToolbox armv7 &lt;802e4d5c449b69d9552809e5230baa84&gt; /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox 0x35156000 - 0x35156fff Accelerate armv7 &lt;f4c04cdfdb64d209828315cdd5b60bf9&gt; /System/Library/Frameworks/Accelerate.framework/Accelerate 0x351fb000 - 0x35308fff libSystem.B.dylib armv7 &lt;3fcf32f3ad8ef745480b5b36efc41953&gt; /usr/lib/libSystem.B.dylib </code></pre> <p>We tried symbolicatecrash too, but it doesn't point to anywhere.</p> <p>Thanks and Regards, Hetal</p>