aws-sdk-ios
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aws-amplify
-[AWSIoTMQTTClient webSocket:didFailWithError:] EXC_BAD_ACCESS (KERN_INVALID_ADDRESS)
Describe the bug This crash occurred frequently online.I utilized the crash stack information monitored by firebase.
Environment(please complete the following information):
- SDK Version: [2.40.2]
- Dependency Manager: [Cocoapods]
- Swift Version : [6.0]
- Xcode Version: [16.2]
Device Information (please complete the following information):
- Device: [iPhone13]
- iOS Version: [iOS 18.4.1]
- Specific to simulators:
INSERT LOG MESSAGES HERE
# Crashlytics - Stack trace
# Application: com.xxxx.xxxx
# Platform: apple
# Version: 2.2.1 (202504282015)
# Issue: 21458489debe4a8f6c440b84d1af5ecf
# Session: fa96f6f91b40483687167bf8293b0a6e_DNE_0_v2
# Date: Wed May 07 2025 08:06:42 GMT+0800 (中国标准时间)
com.apple.main-thread
0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428
3 libsystem_kernel.dylib 0x4100 mach_msg + 24
4 CoreFoundation 0x716cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x70dac __CFRunLoopRun + 1208
6 CoreFoundation 0x95700 CFRunLoopRunSpecific + 572
7 GraphicsServices 0x1190 GSEventRunModal + 168
8 UIKitCore 0x3ca240 -[UIApplication _run] + 816
9 UIKitCore 0x3c8470 UIApplicationMain + 336
10 UIKitCore 0x826a30 block_destroy_helper.15 + 9820
11 xxxx-RM-iOS 0xe6e5cc static UIApplicationDelegate.main() + 4359529932 (<compiler-generated>:4359529932)
12 xxxx-RM-iOS 0xe6c1e0 static AppDelegate.$main() + 4359520736 (<compiler-generated>:4359520736)
13 xxxx-RM-iOS 0xe6e3c4 main + 40 (AppDelegate.swift:40)
14 ??? 0x1b8c4bad8 (缺少)
com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428
3 libsystem_kernel.dylib 0x4100 mach_msg + 24
4 CoreFoundation 0x716cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x70dac __CFRunLoopRun + 1208
6 CoreFoundation 0x95700 CFRunLoopRunSpecific + 572
7 Foundation 0x748a8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8 Foundation 0x736d8 -[NSRunLoop(NSRunLoop) runUntilDate:] + 64
9 UIKitCore 0x4bd5ec -[UIEventFetcher threadMain] + 424
10 Foundation 0x115cf8 __NSThread__start__ + 732
11 libsystem_pthread.dylib 0x1afc _pthread_start + 136
12 libsystem_pthread.dylib 0x1a04 thread_start + 8
com.google.firebase.crashlytics.MachExceptionServer
0 FirebaseCrashlytics 0x1dc08 FIRCLSProcessRecordAllThreads + 392 (FIRCLSProcess.c:392)
1 FirebaseCrashlytics 0x1e014 FIRCLSProcessRecordAllThreads + 423 (FIRCLSProcess.c:423)
2 FirebaseCrashlytics 0x14df8 FIRCLSHandler + 34 (FIRCLSHandler.m:34)
3 FirebaseCrashlytics 0x17994 FIRCLSMachExceptionServer + 521 (FIRCLSMachException.c:521)
4 libsystem_pthread.dylib 0x1afc _pthread_start + 136
5 libsystem_pthread.dylib 0x1a04 thread_start + 8
com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428
3 libsystem_kernel.dylib 0x4100 mach_msg + 24
4 CoreFoundation 0x716cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x70dac __CFRunLoopRun + 1208
6 CoreFoundation 0x95700 CFRunLoopRunSpecific + 572
7 CFNetwork 0xebeec +[__CFN_CoreSchedulingSetRunnable _run:] + 416
8 Foundation 0x115cf8 __NSThread__start__ + 732
9 libsystem_pthread.dylib 0x1afc _pthread_start + 136
10 libsystem_pthread.dylib 0x1a04 thread_start + 8
Thread
0 libsystem_kernel.dylib 0xc60 semaphore_wait_trap + 8
1 libdispatch.dylib 0x38e0 _dispatch_sema4_wait + 28
2 libdispatch.dylib 0x3e90 _dispatch_semaphore_wait_slow + 132
3 UIKitCore 0x5a5d58 CGSizeFromString + 24900
4 UIKitCore 0xe0e24 -[UISceneLayerPresentationContext alpha] + 744
5 Foundation 0x115cf8 __NSThread__start__ + 732
6 libsystem_pthread.dylib 0x1afc _pthread_start + 136
7 libsystem_pthread.dylib 0x1a04 thread_start + 8
com.squareup.SocketRocket.NetworkThread
0 libsystem_kernel.dylib 0xce4 mach_msg2_trap + 8
1 libsystem_kernel.dylib 0x439c mach_msg2_internal + 76
2 libsystem_kernel.dylib 0x42b8 mach_msg_overwrite + 428
3 libsystem_kernel.dylib 0x4100 mach_msg + 24
4 CoreFoundation 0x716cc __CFRunLoopServiceMachPort + 160
5 CoreFoundation 0x70dac __CFRunLoopRun + 1208
6 CoreFoundation 0x95700 CFRunLoopRunSpecific + 572
7 Foundation 0x748a8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
8 AWSIoT 0x8d5a0 -[_SRRunLoopThread main] + 1905 (AWSSRWebSocket.m:1905)
9 Foundation 0x115cf8 __NSThread__start__ + 732
10 libsystem_pthread.dylib 0x1afc _pthread_start + 136
11 libsystem_pthread.dylib 0x1a04 thread_start + 8
com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x832c select$DARWIN_EXTSN + 8
1 libsystem_kernel.dylib 0x832c __select + 8
2 CoreFoundation 0xc8b84 __CFSocketManager + 704
3 libsystem_pthread.dylib 0x1afc _pthread_start + 136
4 libsystem_pthread.dylib 0x1a04 thread_start + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0x6658 __semwait_signal + 8
1 libsystem_c.dylib 0x1c3e8 nanosleep + 220
2 libsystem_c.dylib 0x1c300 usleep + 68
3 AWSIoT 0x875e0 -[AWSMQTTSession error:] + 663 (AWSMQTTSession.m:663)
4 AWSIoT 0x8298c -[AWSMQTTDecoder stream:handleEvent:] + 165 (AWSMQTTDecoder.m:165)
5 CoreFoundation 0x13e914 _inputStreamCallbackFunc + 72
6 CoreFoundation 0xfdac4 _signalEventSync + 212
7 CoreFoundation 0xfd97c _cfstream_shared_signalEventSync + 392
8 CoreFoundation 0x72ce4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
9 CoreFoundation 0x72c78 __CFRunLoopDoSource0 + 172
10 CoreFoundation 0x719fc __CFRunLoopDoSources0 + 232
11 CoreFoundation 0x70c3c __CFRunLoopRun + 840
12 CoreFoundation 0x95700 CFRunLoopRunSpecific + 572
13 Foundation 0x748a8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212
14 AWSIoT 0x8140c -[AWSIoTStreamThread main] + 98 (AWSIoTStreamThread.m:98)
15 Foundation 0x115cf8 __NSThread__start__ + 732
16 libsystem_pthread.dylib 0x1afc _pthread_start + 136
17 libsystem_pthread.dylib 0x1a04 thread_start + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Thread
0 libsystem_kernel.dylib 0xa90 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x46ac _pthread_wqthread + 368
2 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Crashed: com.apple.root.default-qos
0 CoreFoundation 0xe9ec CF_IS_OBJC + 12
1 CoreFoundation 0x8dbc _CFStreamClose + 260
2 AWSIoT 0x635b8 -[AWSIoTMQTTClient webSocket:didFailWithError:] + 1265 (AWSIoTMQTTClient.m:1265)
3 AWSIoT 0x8a3e4 __33-[AWSSRWebSocket _failWithError:]_block_invoke_2 + 759 (AWSSRWebSocket.m:759)
4 libdispatch.dylib 0x1aac _dispatch_call_block_and_release + 32
5 libdispatch.dylib 0x1b584 _dispatch_client_callout + 16
6 libdispatch.dylib 0x3725c _dispatch_queue_override_invoke.cold.3 + 32
7 libdispatch.dylib 0x61f8 _dispatch_queue_override_invoke + 848
8 libdispatch.dylib 0x13db0 _dispatch_root_queue_drain + 364
9 libdispatch.dylib 0x1454c _dispatch_worker_thread2 + 156
10 libsystem_pthread.dylib 0x4624 _pthread_wqthread + 232
11 libsystem_pthread.dylib 0x19f8 start_wqthread + 8
Hello, thank you for posting this. We have tried to release several improvements in previous releases. However, we have not been successful in reproducing the issue on our side. Would you be able to share a mini project/code that helps us reproduce this issue?
We found that when we actively called the disconnect method of AWSIoTDataManager, the probability of these crashes occurring would increase significantly. Hope this is helpful for you to analyze the occurrence of bugs. In addition, when I call the AWSIoTDataManager disconnect method, I'll call the reconnection connectUsingWebSocketWithClientId, whether this would be the cause of the crash occurred probability high?
