Same here.
omegatai
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Same in Quebec, Canada 🇨🇦. It's fun to see complaints from fellow devs from around the world.
Also happening on all our apps with Core Data used with multithreading. The crashes are pretty bad and the apps never recover. Was working fine before iOS 14. Here are some stacktraces for the different crashes we got so far (in production):
Crashed: NSManagedObjectContext 0x281198b60
EXCBADACCESS KERNINVALIDADDRESS 0x0000000000000004
0 CoreData 0x1ac4447ac _PFObjectIDFastHash64 + 40
1 CoreFoundation 0x1a63ea4f8 __CFBasicHashRehash + 992
2 CoreFoundation 0x1a63ee414 CFBasicHashRemoveValue + 2384
3 CoreFoundation 0x1a6305ec0 CFDictionaryRemoveValue + 236
4 CoreData 0x1ac3911c0 -[NSManagedObjectContext(_NSInternalAdditions) _forgetObject:propagateToObjectStore:removeFromRegistry:] + 124
5 CoreData 0x1ac3706ec -[_PFManagedObjectReferenceQueue _processReferenceQueue:] + 860
6 CoreData 0x1ac48e198 __90-[NSManagedObjectContext(_NSInternalNotificationHandling) _registerAsyncReferenceCallback]_block_invoke + 72
7 CoreData 0x1ac484410 developerSubmittedBlockToNSManagedObjectContextPerform + 164
8 libdispatch.dylib 0x1a5fbcac8 _dispatch_client_callout + 20
9 libdispatch.dylib 0x1a5fc3c08 _dispatch_lane_serial_drain + 580
10 libdispatch.dylib 0x1a5fc4734 _dispatch_lane_invoke + 408
11 libdispatch.dylib 0x1a5fce528 _dispatch_workloop_worker_thread + 708
12 libsystem_pthread.dylib 0x1ed910908 _pthread_wqthread + 276
13 libsystem_pthread.dylib 0x1ed91777c start_wqthread + 8
Crashed: NSManagedObjectContext 0x281234820
EXCBADACCESS KERNINVALIDADDRESS 0x0000000000000010
0 CoreData 0x1ac4867ec -[NSManagedObjectContext _disposeObjects:count:notifyParent:] + 232
1 CoreData 0x1ac47c5f8 -[NSManagedObjectContext _dispose:] + 328
2 CoreData 0x1ac364360 -[NSManagedObjectContext _dealloc__] + 488
3 CoreData 0x1ac4919cc __internalBlockToDeallocNSManagedObjectContext_block_invoke + 56
4 CoreData 0x1ac484410 developerSubmittedBlockToNSManagedObjectContextPerform + 164
5 libdispatch.dylib 0x1a5fbcac8 _dispatch_client_callout
6 libdispatch.dylib 0x1a5fc3c08 _dispatch_lane_serial_drain
7 libdispatch.dylib 0x1a5fc4734 _dispatch_lane_invoke
8 libdispatch.dylib 0x1a5fce528 _dispatch_workloop_worker_thread
9 libsystem_pthread.dylib 0x1ed910908 _pthread_wqthread + 276
10 libsystem_pthread.dylib 0x1ed91777c start_wqthread + 8
Crashed: Local sync feed queue - syncQueue (QOS: UNSPECIFIED)
EXCBADACCESS KERNINVALIDADDRESS 0x000000014cdfc000
0 CoreFoundation 0x1a63ea414 __CFBasicHashRehash + 764
1 CoreFoundation 0x1a63ee414 CFBasicHashRemoveValue + 2384
2 CoreFoundation 0x1a6305ec0 CFDictionaryRemoveValue + 236
3 CoreData 0x1ac3911c0 -[NSManagedObjectContext(_NSInternalAdditions) _forgetObject:propagateToObjectStore:removeFromRegistry:] + 124
4 CoreData 0x1ac3706ec -[_PFManagedObjectReferenceQueue _processReferenceQueue:] + 860
5 CoreData 0x1ac43c734 -[_PFAutoreleasePoolThunk dealloc] + 48
6 libobjc.A.dylib 0x1ba45781c AutoreleasePoolPage::releaseUntil(objc_object**) + 204
7 libobjc.A.dylib 0x1ba4576e8 objc_autoreleasePoolPop + 212
8 Foundation 0x1a75c8fa8 -[NSOperation start] + 1320
9 Foundation 0x1a76d9624 NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION + 24
10 Foundation 0x1a76d90d0 __NSOQSchedule_f + 184
11 libdispatch.dylib 0x1a5fca834 _dispatch_block_async_invoke2 + 148
12 libdispatch.dylib 0x1a5fbcac8 _dispatch_client_callout + 20
13 libdispatch.dylib 0x1a5fbfd60 _dispatch_continuation_pop + 416
14 libdispatch.dylib 0x1a5fbf494 _dispatch_async_redirect_invoke + 592
15 libdispatch.dylib 0x1a5fcd104 _dispatch_root_queue_drain + 356
16 libdispatch.dylib 0x1a5fcd8e8 _dispatch_worker_thread2 + 116
17 libsystem_pthread.dylib 0x1ed9108cc _pthread_wqthread + 216
18 libsystem_pthread.dylib 0x1ed91777c start_wqthread + 8
Crashed: NSManagedObjectContext 0x28034c340
EXCBADACCESS KERNINVALIDADDRESS 0x000000000000001c
0 libobjc.A.dylib 0x1ba43a53c object_getIndexedIvars + 36
1 CoreData 0x1ac4447a8 _PFObjectIDFastHash64 + 36
2 CoreFoundation 0x1a63ea4f8 __CFBasicHashRehash + 992
3 CoreFoundation 0x1a63ee414 CFBasicHashRemoveValue + 2384
4 CoreFoundation 0x1a6305ec0 CFDictionaryRemoveValue + 236
5 CoreData 0x1ac3911c0 -[NSManagedObjectContext(_NSInternalAdditions) _forgetObject:propagateToObjectStore:removeFromRegistry:] + 124
6 CoreData 0x1ac3706ec -[_PFManagedObjectReferenceQueue _processReferenceQueue:] + 860
7 CoreData 0x1ac48e198 __90-[NSManagedObjectContext(_NSInternalNotificationHandling) _registerAsyncReferenceCallback]_block_invoke + 72
8 CoreData 0x1ac484410 developerSubmittedBlockToNSManagedObjectContextPerform + 164
9 libdispatch.dylib 0x1a5fbcac8 _dispatch_client_callout + 20
10 libdispatch.dylib 0x1a5fc3c08 _dispatch_lane_serial_drain + 580
11 libdispatch.dylib 0x1a5fc4734 _dispatch_lane_invoke + 408
12 libdispatch.dylib 0x1a5fce528 _dispatch_workloop_worker_thread + 708
13 libsystem_pthread.dylib 0x1ed910908 _pthread_wqthread + 276
14 libsystem_pthread.dylib 0x1ed91777c start_wqthread + 8