aws-sdk-ios
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Published
20 hours ago •
aws-amplify
aws-amplify
Random crash when getTokens is called: Attempted to dereference garbage pointer
Describe the bug This bug was reported from our error monitoring system Sentry, it's an attempted to deference garbage pointer kind of issue, and seems to be happening when the function getTokens is called, I will provide here two different stack traces of the error, in the first one in particular the issue seems to be happening at line 51 of the AWSMobileClient+Tokens file.
To Reproduce Occurs Randomly
Observed Behavior Crash
Expected Behavior The get tokens function is called succesfully
Stack Trace
Stack trace 1
OS Version: iOS 15.5 (19F77)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: BUS_NOOP at 0x0061007200650070
Crashed Thread: 12
Application Specific Information:
Exception 1, Code 6619248, Subcode 8 >
Attempted to dereference garbage pointer 0x61007200650070.
Thread 12 Crashed:
0 libobjc.A.dylib 0x3345499c8 objc_retain
1 AWSMobileClient 0x104cb5f88 [inlined] Array._getElement
2 AWSMobileClient 0x104cb5f88 Array.subscript.getter
3 AWSMobileClient 0x104cb613c AWSMobileClient.getTokens (AWSMobileClient+Tokens.swift:51)
4 AWSMobileClient 0x104cb5f14 thunk for closure
5 Foundation 0x305acdfb8 __111+[__NSOperationInternalObserver _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke_2
6 libdispatch.dylib 0x302447e68 _dispatch_call_block_and_release
7 libdispatch.dylib 0x302449a2c _dispatch_client_callout
8 libdispatch.dylib 0x30244cb40 _dispatch_queue_override_invoke
9 libdispatch.dylib 0x30245b160 _dispatch_root_queue_drain
10 libdispatch.dylib 0x30245b968 _dispatch_worker_thread2
11 libsystem_pthread.dylib 0x3e4e4307c _pthread_wqthread
Thread 0
0 libswiftCore.dylib 0x30c3b89a0 swift_getObjectType
1 libswiftCore.dylib 0x30c022880 [inlined] _bridgeAnyObjectToAny
2 libswiftCore.dylib 0x30c022880 _bridgeAnyObjectToAny
3 libswiftFoundation.dylib 0x30ba71050 NSURLSession.DataTaskPublisher.Inner.request
4 libswiftFoundation.dylib 0x30ba719cc NSURLSession.DataTaskPublisher.Inner<T>
5 Combine 0x332c5cda0 Publishers.FlatMap.Outer.receiveInner
6 Combine 0x332c60684 Publishers.FlatMap.Outer.Side.receive
7 libswiftFoundation.dylib 0x30ba708c0 NSURLSession.DataTaskPublisher.receive<T>
8 Combine 0x332c5edb0 Publishers.MapError.receive<T>
9 Combine 0x332c61d7c Publishers.FlatMap.Outer.receive
10 Combine 0x332c65d2c Publishers.FlatMap<T>.Outer<T>
11 Combine 0x332c73748 Publishers.FlatMap.Outer.receiveInner
12 Combine 0x332c61e00 Publishers.FlatMap.Outer.Side.receive
13 Combine 0x332c73748 Publishers.FlatMap.Outer.receiveInner
14 Combine 0x332c61e00 Publishers.FlatMap.Outer.Side.receive
15 Combine 0x332c942a8 Just.Inner.request
16 Combine 0x332c8b280 Just<T>.Inner<T>
17 Combine 0x332c5cda0 Publishers.FlatMap.Outer.receiveInner
18 Combine 0x332c60684 Publishers.FlatMap.Outer.Side.receive
19 Combine 0x332c5d5c4 Just.receive<T>
20 Combine 0x332c7adb0 Deferred.receive<T>
21 Combine 0x332c8f680 Publishers.SetFailureType.receive<T>
22 Combine 0x332c810e0 PublisherBox.receive<T>
23 Combine 0x332c5ceb8 AnyPublisher.receive<T>
24 Combine 0x332c61d7c Publishers.FlatMap.Outer.receive
25 Combine 0x332c65d2c Publishers.FlatMap<T>.Outer<T>
26 Combine 0x332c73748 Publishers.FlatMap.Outer.receiveInner
27 Combine 0x332c61e00 Publishers.FlatMap.Outer.Side.receive
28 Combine 0x332c73748 Publishers.FlatMap.Outer.receiveInner
29 Combine 0x332c61e00 Publishers.FlatMap.Outer.Side.receive
30 Combine 0x332c6c80c Result.Publisher.Inner.request
31 Combine 0x332c6ea14 Result<T>.Publisher.Inner<T>
32 Combine 0x332c5cda0 Publishers.FlatMap.Outer.receiveInner
33 Combine 0x332c60684 Publishers.FlatMap.Outer.Side.receive
34 Combine 0x332c69cb8 Result.Publisher.receive<T>
35 Combine 0x332c810e0 PublisherBox.receive<T>
36 Combine 0x332c5ceb8 AnyPublisher.receive<T>
37 Combine 0x332c61d7c Publishers.FlatMap.Outer.receive
38 Combine 0x332c65d2c Publishers.FlatMap<T>.Outer<T>
39 Combine 0x332c6c9f8 Publishers.ReceiveOn.Inner.receive
40 libswiftDispatch.dylib 0x336261c00 thunk for closure
41 libdispatch.dylib 0x302447e68 _dispatch_call_block_and_release
42 libdispatch.dylib 0x302449a2c _dispatch_client_callout
43 libdispatch.dylib 0x302457f44 _dispatch_main_queue_drain
44 libdispatch.dylib 0x302457b94 _dispatch_main_queue_callback_4CF
45 CoreFoundation 0x302a9d7fc __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
46 CoreFoundation 0x302a57700 __CFRunLoopRun
47 CoreFoundation 0x302a6abc4 CFRunLoopRunSpecific
48 GraphicsServices 0x33acef370 GSEventRunModal
49 UIKitCore 0x307854644 -[UIApplication _run]
50 UIKitCore 0x3075d5d8c UIApplicationMain
51 nate.native.ios 0x20414690c main (main.swift:13)
52 <unknown> 0x1048e9ce4 <redacted>
Thread 1
0 libsystem_kernel.dylib 0x371fe9a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x3e4e43104 _pthread_wqthread
Thread 2 name: com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x371fe94a0 mach_msg_trap
1 libsystem_kernel.dylib 0x371fe9ae0 mach_msg
2 CoreFoundation 0x302a52d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x302a571b8 __CFRunLoopRun
4 CoreFoundation 0x302a6abc4 CFRunLoopRunSpecific
5 Foundation 0x305a4d460 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
6 Foundation 0x305a8ee28 -[NSRunLoop(NSRunLoop) runUntilDate:]
7 UIKitCore 0x3077ce76c -[UIEventFetcher threadMain]
8 Foundation 0x305a9d438 __NSThread__start__
9 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 3
0 libsystem_kernel.dylib 0x371fe9a2c __semwait_signal
1 libsystem_c.dylib 0x318d4f0e0 nanosleep
2 libsystem_c.dylib 0x318d63384 sleep
3 Sentry 0x106a25888 monitorCachedData (SentryCrashCachedData.c:144)
4 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 4 name: SentryCrash Exception Handler (Secondary)
0 libsystem_kernel.dylib 0x371fe94a0 mach_msg_trap
1 libsystem_kernel.dylib 0x371fe9ae0 mach_msg
2 Sentry 0x106a3291c handleExceptions (SentryCrashMonitor_MachException.c:266)
3 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 6 name: io.sentry.anr-tracker
0 libsystem_kernel.dylib 0x371fe9a2c __semwait_signal
1 libsystem_c.dylib 0x318d4f0e0 nanosleep
2 Foundation 0x305aafd04 +[NSThread sleepForTimeInterval:]
3 Sentry 0x106a189f8 -[SentryANRTracker detectANRs] (SentryANRTracker.m:66)
4 Foundation 0x305a9d438 __NSThread__start__
5 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 7 name: GCDAsyncSocket-CFStream
0 libsystem_kernel.dylib 0x371fe94a0 mach_msg_trap
1 libsystem_kernel.dylib 0x371fe9ae0 mach_msg
2 CoreFoundation 0x302a52d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x302a571b8 __CFRunLoopRun
4 CoreFoundation 0x302a6abc4 CFRunLoopRunSpecific
5 Foundation 0x305a4d460 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
6 CocoaAsyncSocket 0x104baaf70 +[GCDAsyncSocket cfstreamThread:] (GCDAsyncSocket.m:7686)
7 Foundation 0x305a9d438 __NSThread__start__
8 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 8 name: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x371fe94a0 mach_msg_trap
1 libsystem_kernel.dylib 0x371fe9ae0 mach_msg
2 CoreFoundation 0x302a52d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x302a571b8 __CFRunLoopRun
4 CoreFoundation 0x302a6abc4 CFRunLoopRunSpecific
5 CFNetwork 0x303d02238 _CFURLStorageSessionDisableCache
6 Foundation 0x305a9d438 __NSThread__start__
7 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 9 name: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x371fea164 __select
1 CoreFoundation 0x302af6b64 __CFSocketManager
2 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 10 name: AVAudioSession Notify Thread
0 libsystem_kernel.dylib 0x371fe94a0 mach_msg_trap
1 libsystem_kernel.dylib 0x371fe9ae0 mach_msg
2 CoreFoundation 0x302a52d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x302a571b8 __CFRunLoopRun
4 CoreFoundation 0x302a6abc4 CFRunLoopRunSpecific
5 AudioSession 0x31569af00 CADeprecated::GenericRunLoopThread::Entry
6 AudioSession 0x3156a48ec CADeprecated::CAPThread::Entry
7 libsystem_pthread.dylib 0x3e4e439a8 _pthread_start
Thread 11
0 libsystem_pthread.dylib 0x3e4e42e54 start_wqthread
Thread 12 Crashed:
0 libobjc.A.dylib 0x3345499c8 objc_retain
1 AWSMobileClient 0x104cb5f88 [inlined] Array._getElement
2 AWSMobileClient 0x104cb5f88 Array.subscript.getter
3 AWSMobileClient 0x104cb613c AWSMobileClient.getTokens (AWSMobileClient+Tokens.swift:51)
4 AWSMobileClient 0x104cb5f14 thunk for closure
5 Foundation 0x305acdfb8 __111+[__NSOperationInternalObserver _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke_2
6 libdispatch.dylib 0x302447e68 _dispatch_call_block_and_release
7 libdispatch.dylib 0x302449a2c _dispatch_client_callout
8 libdispatch.dylib 0x30244cb40 _dispatch_queue_override_invoke
9 libdispatch.dylib 0x30245b160 _dispatch_root_queue_drain
10 libdispatch.dylib 0x30245b968 _dispatch_worker_thread2
11 libsystem_pthread.dylib 0x3e4e4307c _pthread_wqthread
Thread 13
0 libsystem_pthread.dylib 0x3e4e42e54 start_wqthread
Thread 14
0 libdispatch.dylib 0x302451018 _dispatch_lane_serial_drain
1 libdispatch.dylib 0x302451120 _dispatch_lane_serial_drain
2 libdispatch.dylib 0x302451c7c _dispatch_lane_invoke
3 libdispatch.dylib 0x30245c4fc _dispatch_workloop_worker_thread
4 libsystem_pthread.dylib 0x3e4e430b8 _pthread_wqthread
EOF
Stack trace 2:
OS Version: iOS 15.5 (19F77)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGBUS)
Exception Codes: BUS_NOOP at 0x000000927d7b68b0
Crashed Thread: 1
Application Specific Information:
Exception 1, Code 2105239728, Subcode 8 >
Attempted to dereference garbage pointer 0x927d7b68b0.
Thread 1 Crashed:
0 libswiftCore.dylib 0x3365ba40c _swift_release_dealloc
1 AWSMobileClient 0x1037ca30c [inlined] _ArrayBuffer._consumeAndCreateNew
2 AWSMobileClient 0x1037ca30c _ArrayBuffer._consumeAndCreateNew
3 AWSMobileClient 0x1037ca1b4 Array._makeMutableAndUnique
4 AWSMobileClient 0x1037c9f14 thunk for closure
5 Foundation 0x32fd0dfb8 __111+[__NSOperationInternalObserver _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke_2
6 libdispatch.dylib 0x32c687e68 _dispatch_call_block_and_release
7 libdispatch.dylib 0x32c689a2c _dispatch_client_callout
8 libdispatch.dylib 0x32c68cb40 _dispatch_queue_override_invoke
9 libdispatch.dylib 0x32c69b160 _dispatch_root_queue_drain
10 libdispatch.dylib 0x32c69b968 _dispatch_worker_thread2
11 libsystem_pthread.dylib 0x40f08307c _pthread_wqthread
Thread 0
0 libsystem_platform.dylib 0x40f072fc4 _platform_strlen
1 Foundation 0x32fce8338 -[NSXPCEncoder _encodeInvocation:isReply:into:]
2 Foundation 0x32fcb98b8 -[NSXPCConnection _sendInvocation:orArguments:count:methodSignature:selector:withProxy:]
3 CoreFoundation 0x32ccb9c18 ___forwarding___
4 CoreFoundation 0x32ccb8f6c __forwarding_prep_0___
5 CoreFoundation 0x32ccb6830 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__
6 CoreFoundation 0x32cd52fd0 ___CFXRegistrationPost_block_invoke
7 CoreFoundation 0x32cd261cc _CFXRegistrationPost
8 CoreFoundation 0x32cccc8a8 _CFXNotificationPost
9 Foundation 0x32fc8f750 -[NSNotificationCenter postNotificationName:object:userInfo:]
10 UIKitCore 0x33185002c -[UIApplication _stopDeactivatingForReason:]
11 UIKitCore 0x331772344 __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke_2
12 UIKitCore 0x33172d3b0 _UIScenePerformActionsWithLifecycleActionMask
13 UIKitCore 0x331857d8c __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke
14 UIKitCore 0x331977a9c -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:]
15 UIKitCore 0x331bb6760 -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]
16 UIKitCore 0x331b41d10 -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:]
17 UIKitCore 0x33172e19c __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke
18 UIKitCore 0x3317ee0d4 +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:actions:completion:]
19 UIKitCore 0x3317300a0 _UISceneSettingsDiffActionPerformChangesWithTransitionContext
20 UIKitCore 0x33181a240 -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]
21 UIKitCore 0x331c9ee5c __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke.615
22 UIKitCore 0x33175e480 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:]
23 UIKitCore 0x3317a1cc0 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:]
24 UIKitCore 0x33172c034 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:]
25 FrontBoardServices 0x35118ce14 -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:]
26 FrontBoardServices 0x3511a5138 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2
27 FrontBoardServices 0x35118a304 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:]
28 FrontBoardServices 0x351190820 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke
29 libdispatch.dylib 0x32c689a2c _dispatch_client_callout
30 libdispatch.dylib 0x32c68d4dc _dispatch_block_invoke_direct
31 FrontBoardServices 0x35118bc6c __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__
32 FrontBoardServices 0x35118b03c -[FBSSerialQueue _targetQueue_performNextIfPossible]
33 FrontBoardServices 0x35118f6fc -[FBSSerialQueue _performNextFromRunLoopSource]
34 CoreFoundation 0x32cd47410 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
35 CoreFoundation 0x32cd5819c __CFRunLoopDoSource0
36 CoreFoundation 0x32cc91690 __CFRunLoopDoSources0
37 CoreFoundation 0x32cc97058 __CFRunLoopRun
38 CoreFoundation 0x32ccaabc4 CFRunLoopRunSpecific
39 GraphicsServices 0x364f2f370 GSEventRunModal
40 UIKitCore 0x331a94644 -[UIApplication _run]
41 UIKitCore 0x331815d8c UIApplicationMain
42 nate.native.ios 0x2029ae90c main (main.swift:13)
43 <unknown> 0x103029ce4 <redacted>
Thread 1 Crashed:
0 libswiftCore.dylib 0x3365ba40c _swift_release_dealloc
1 AWSMobileClient 0x1037ca30c [inlined] _ArrayBuffer._consumeAndCreateNew
2 AWSMobileClient 0x1037ca30c _ArrayBuffer._consumeAndCreateNew
3 AWSMobileClient 0x1037ca1b4 Array._makeMutableAndUnique
4 AWSMobileClient 0x1037c9f14 thunk for closure
5 Foundation 0x32fd0dfb8 __111+[__NSOperationInternalObserver _observeValueForKeyPath:ofObject:changeKind:oldValue:newValue:indexes:context:]_block_invoke_2
6 libdispatch.dylib 0x32c687e68 _dispatch_call_block_and_release
7 libdispatch.dylib 0x32c689a2c _dispatch_client_callout
8 libdispatch.dylib 0x32c68cb40 _dispatch_queue_override_invoke
9 libdispatch.dylib 0x32c69b160 _dispatch_root_queue_drain
10 libdispatch.dylib 0x32c69b968 _dispatch_worker_thread2
11 libsystem_pthread.dylib 0x40f08307c _pthread_wqthread
Thread 2
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 3
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 4
0 libsystem_pthread.dylib 0x40f082e54 start_wqthread
Thread 5 name: com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x39c2294a0 mach_msg_trap
1 libsystem_kernel.dylib 0x39c229ae0 mach_msg
2 CoreFoundation 0x32cc92d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x32cc971b8 __CFRunLoopRun
4 CoreFoundation 0x32ccaabc4 CFRunLoopRunSpecific
5 Foundation 0x32fc8d460 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
6 Foundation 0x32fccee28 -[NSRunLoop(NSRunLoop) runUntilDate:]
7 UIKitCore 0x331a0e76c -[UIEventFetcher threadMain]
8 Foundation 0x32fcdd438 __NSThread__start__
9 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 6
0 libsystem_kernel.dylib 0x39c229a2c __semwait_signal
1 libsystem_c.dylib 0x342f8f0e0 nanosleep
2 libsystem_c.dylib 0x342fa3384 sleep
3 Sentry 0x1064bd888 monitorCachedData (SentryCrashCachedData.c:144)
4 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 7 name: SentryCrash Exception Handler (Secondary)
0 libsystem_kernel.dylib 0x39c2294a0 mach_msg_trap
1 libsystem_kernel.dylib 0x39c229ae0 mach_msg
2 Sentry 0x1064ca91c handleExceptions (SentryCrashMonitor_MachException.c:266)
3 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 9 name: io.sentry.anr-tracker
0 libsystem_kernel.dylib 0x39c229a2c __semwait_signal
1 libsystem_c.dylib 0x342f8f0e0 nanosleep
2 Foundation 0x32fcefd04 +[NSThread sleepForTimeInterval:]
3 Sentry 0x1064b09f8 -[SentryANRTracker detectANRs] (SentryANRTracker.m:66)
4 Foundation 0x32fcdd438 __NSThread__start__
5 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 10
0 CoreFoundation 0x32ccd4544 CFDictionaryCreateMutable
1 Security 0x33ed3a7c8 SecCFDictionaryCOWGetMutable
2 Security 0x33ed3ab30 SecItemCopyMatching
3 FraudForce 0x107a0f93c czsiSymbolZeroOne
4 FraudForce 0x107a0fc30 czsiSymbolZeroOne
5 FraudForce 0x107a0fde0 czsiSymbolZeroOne
6 FraudForce 0x107a0ef98 czsiSymbolZeroOne
7 FraudForce 0x107a0c2ec czsiSymbolZeroOne
8 Foundation 0x32fcc5c18 __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__
9 Foundation 0x32fcd7f90 -[NSBlockOperation main]
10 Foundation 0x32fcb0210 __NSOPERATION_IS_INVOKING_MAIN__
11 Foundation 0x32fcc15d8 -[NSOperation start]
12 Foundation 0x32fcc4c64 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__
13 Foundation 0x32fcd2e0c __NSOQSchedule_f
14 libdispatch.dylib 0x32c69882c _dispatch_block_async_invoke2
15 libdispatch.dylib 0x32c689a2c _dispatch_client_callout
16 libdispatch.dylib 0x32c68cee8 _dispatch_continuation_pop
17 libdispatch.dylib 0x32c68c554 _dispatch_async_redirect_invoke
18 libdispatch.dylib 0x32c69b160 _dispatch_root_queue_drain
19 libdispatch.dylib 0x32c69b968 _dispatch_worker_thread2
20 libsystem_pthread.dylib 0x40f08307c _pthread_wqthread
Thread 11 name: GCDAsyncSocket-CFStream
0 libsystem_kernel.dylib 0x39c2294a0 mach_msg_trap
1 libsystem_kernel.dylib 0x39c229ae0 mach_msg
2 CoreFoundation 0x32cc92d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x32cc971b8 __CFRunLoopRun
4 CoreFoundation 0x32ccaabc4 CFRunLoopRunSpecific
5 Foundation 0x32fc8d460 -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
6 CocoaAsyncSocket 0x10389ef70 +[GCDAsyncSocket cfstreamThread:] (GCDAsyncSocket.m:7686)
7 Foundation 0x32fcdd438 __NSThread__start__
8 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 12 name: com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x39c2294a0 mach_msg_trap
1 libsystem_kernel.dylib 0x39c229ae0 mach_msg
2 CoreFoundation 0x32cc92d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x32cc971b8 __CFRunLoopRun
4 CoreFoundation 0x32ccaabc4 CFRunLoopRunSpecific
5 CFNetwork 0x32df42238 _CFURLStorageSessionDisableCache
6 Foundation 0x32fcdd438 __NSThread__start__
7 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 13 name: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x39c22a164 __select
1 CoreFoundation 0x32cd36b64 __CFSocketManager
2 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 14
0 libsystem_kernel.dylib 0x39c22d3e4 __unlink
1 libsystem_kernel.dylib 0x39c2313a8 unlink
2 CFNetwork 0x32df5a044 __CFTubeSetTubeTypeNotifier
3 CFNetwork 0x32dda872c CFHTTPCookieGetExpirationTime
4 libdispatch.dylib 0x32c69882c _dispatch_block_async_invoke2
5 libdispatch.dylib 0x32c689a2c _dispatch_client_callout
6 libdispatch.dylib 0x32c691120 _dispatch_lane_serial_drain
7 libdispatch.dylib 0x32c691cb0 _dispatch_lane_invoke
8 libdispatch.dylib 0x32c69c4fc _dispatch_workloop_worker_thread
9 libsystem_pthread.dylib 0x40f0830b8 _pthread_wqthread
Thread 15 name: AVAudioSession Notify Thread
0 libsystem_kernel.dylib 0x39c2294a0 mach_msg_trap
1 libsystem_kernel.dylib 0x39c229ae0 mach_msg
2 CoreFoundation 0x32cc92d2c __CFRunLoopServiceMachPort
3 CoreFoundation 0x32cc971b8 __CFRunLoopRun
4 CoreFoundation 0x32ccaabc4 CFRunLoopRunSpecific
5 AudioSession 0x33f8daf00 CADeprecated::GenericRunLoopThread::Entry
6 AudioSession 0x33f8e48ec CADeprecated::CAPThread::Entry
7 libsystem_pthread.dylib 0x40f0839a8 _pthread_start
Thread 16
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 17
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 18
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 19
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
Thread 20
0 libsystem_kernel.dylib 0x39c229a74 __workq_kernreturn
1 libsystem_pthread.dylib 0x40f083104 _pthread_wqthread
EOF
Code Snippet line 51 of the AWSMobileClient+Tokens file inside the getTokens function, here are the first 62 lines of the file in the version we are currently using:
//
// Copyright 2017-2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License.
// A copy of the License is located at
//
// http://aws.amazon.com/apache2.0
//
// or in the "license" file accompanying this file. This file is distributed
// on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language governing
// permissions and limitations under the License.
//
import Foundation
import AWSCore
public typealias TokenCompletion = (Tokens?, Error?) -> Void
extension AWSMobileClient {
/// Returns cached UserPools auth JWT tokens if valid.
/// If the `idToken` is not valid, and a refresh token is available, refresh token is used to get a new `idToken`.
/// If there is no refresh token and the user is signed in, a notification is dispatched to indicate requirement of user to re-signin.
/// The call to wait will be synchronized so that if multiple threads call this method, they will block till the first thread gets the token.
///
/// - Parameter completionHandler: Tokens if available, else error.
public func getTokens(_ completionHandler: @escaping TokenCompletion) {
switch self.federationProvider {
case .userPools:
AWSMobileClientLogging.verbose("Adding FetchUserPoolTokensOperation operation")
let operation = FetchUserPoolTokensOperation(completion: completionHandler)
operation.delegate = self
operation.completionBlock = { [weak self] in
guard let index = self?.tokenOperations.firstIndex(of: operation) else {return}
self?.tokenOperations.remove(at: index)
}
tokenOperations.append(operation)
tokenFetchOperationQueue.addOperation(operation)
case .hostedUI:
AWSMobileClientLogging.verbose("Invoking hostedUI getTokens")
let operation = FetchUserPoolTokensOperation(
userPool: AWSCognitoAuth(forKey: AWSMobileClientConstants.CognitoAuthRegistrationKey),
completion: completionHandler)
operation.delegate = self
operation.completionBlock = { [weak self] in
guard let index = self?.tokenOperations.firstIndex(of: operation) else {return}
self?.tokenOperations.remove(at: index)
}
tokenOperations.append(operation)
tokenFetchOperationQueue.addOperation(operation)
default:
let message = AWSMobileClientConstants.notSignedInMessage
let error = AWSMobileClientError.notSignedIn(message: message)
completionHandler(nil, error)
}
}
}
Areas of the SDK you are using (AWSMobileClient, Cognito, Pinpoint, IoT, etc)? AWSMobileClient
Environment(please complete the following information):
- AWS SDK 2.27.10 installed through cocoapods
- Xcode 13.3.1
Device Information (please complete the following information): Happens on all different kinds of iOS devices and seems to be happening from iOS 14.7.1 to 15.5
@mauronate There was a recent fix released around this in 2.27.12. Can you please use the latest version and verify if this still happens.
Hello. I use the latest 2.27.13 version and I still have this early crash related to AWSMobileClient getTokens. Here's my stack trace:
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x99288 __exceptionPreprocess
1 libobjc.A.dylib 0x16744 objc_exception_throw
2 Foundation 0x143354 -[NSConcreteHashTable rehash]
3 Foundation 0x1da54 hashProbe
4 Foundation 0x20b64 -[NSConcreteHashTable addObject:]
5 AWSMobileClientXCF 0x38d54 AWSMobileClient.getTokens(_:) + 33 (AWSMobileClient+Tokens.swift:33)
6 Project 0x27755c specialized JWTAuthenticationServiceImpl.getToken(completion:) (
Hm, also I can see that it might be Firebase that crashes my app. But still it got tracked in Crashlytics as AWS crashes my app.
Crashed: com.google.firebase.crashlytics.ios.exception 0 AnalyticsService 0xc5ca8 FIRCLSProcessRecordAllThreads + 393 (FIRCLSProcess.c:393) 1 AnalyticsService 0xc6088 FIRCLSProcessRecordAllThreads + 424 (FIRCLSProcess.c:424) 2 AnalyticsService 0xd53e0 FIRCLSHandler + 34 (FIRCLSHandler.m:34) 3 AnalyticsService 0xd51c8 __FIRCLSExceptionRecord_block_invoke + 232 (FIRCLSException.mm:232) 4 libdispatch.dylib 0x3a30 _dispatch_client_callout + 20 5 libdispatch.dylib 0x12c90 _dispatch_lane_barrier_sync_invoke_and_complete + 56 6 AnalyticsService 0xd3fa8 FIRCLSExceptionRecord + 234 (FIRCLSException.mm:234) 7 AnalyticsService 0xd4c70 FIRCLSExceptionRecordNSException + 126 (FIRCLSException.mm:126) 8 AnalyticsService 0xd3ba8 FIRCLSTerminateHandler() + 398 (FIRCLSException.mm:398) 9 libc++abi.dylib 0x10f18 std::__terminate(void (*)()) + 20 10 libc++abi.dylib 0x13ebc __cxa_rethrow + 148 11 libobjc.A.dylib 0x186c0 objc_exception_rethrow + 44 12 CoreFoundation 0x1ecb4 CFRunLoopRunSpecific + 836 13 GraphicsServices 0x1374 GSEventRunModal + 164 14 UIKitCore 0x514b58 -[UIApplication _run] + 1100 15 UIKitCore 0x296090 UIApplicationMain + 364 16 Project 0x7180 main + 41 (AppDelegate.swift:41) 17 ??? 0x102f09da4 (Missing)
Hi,
Any updates on this? We are also on the latest version 2.27.13 and are experiencing a lot of crashes with the getTokens function.
Thank you!
Here is a stack trace:
| 0 | libobjc.A.dylib | 0x66f8 | objc_loadWeakRetained | + 140 |
|---|---|---|---|---|
| 1 | libobjc.A.dylib | 0x66cc | objc_loadWeakRetained | + 96 |
| 2 | libobjc.A.dylib | 0x9dac | objc_loadWeak | + 20 |
| 3 | Foundation | 0xc0b0c | -[NSConcreteHashTable hashGrow] | + 140 |
| 4 | Foundation | 0x20bb4 | -[NSConcreteHashTable addObject:] | + 148 |
| 5 | AWSMobileClientXCF | 0x38d68 | AWSMobileClient.getTokens(_:) | + 624 |
| 6 | {MyApp} | 0x3912b0 | $s14Authentication11AuthServiceC12getAWSTokens33_C66F4B88FE75905EB74EDD2F8C956523LLSSyYaKFyScCySSs5Error_pGXEfU_ | + 196 |
| 7 | libswift_Concurrency.dylib | 0x68a8 | $ss31withCheckedThrowingContinuation8function_xSS_yScCyxs5Error_pGXEtYaKlFySccyxsAC_pGXEfU_TA | + 164 |
| 8 | libswift_Concurrency.dylib | 0x69bc | $ss30withUnsafeThrowingContinuationyxySccyxs5Error_pGXEYaKlF | + 224 |
| 9 | libswift_Concurrency.dylib | 0x3b7c8 | swift::runJobInEstablishedExecutorContext(swift::Job*) | + 240 |
Thank you for the stack trace, I am guessing the issue might be due to multiple thread trying access the shared NSHashTable. Created this PR that might potentially fix the issue, will you be able to test this? https://github.com/aws-amplify/aws-sdk-ios/pull/4290
@klein-thibault The latest SDK release has a potential fix for the issue. Could you please give it a try and let us know if you are still facing the issue?
Release: https://github.com/aws-amplify/aws-sdk-ios/releases/tag/2.28.0
Thank you @royjit @harsh62; we'll include the updated SDK in our next release and report back here.
Seeing this on 2.28.0, 2.30.4 and 2.33.4
edit: to clarify, only reproducing the EXC_BAD_ACCESS when testing release builds.
