I am developing the UI extension, it works correctly with iOS 15, but crashes upon startup on devices running iOS 14. To my understanding, the presented log implies that crash occurs before the extension's code is executed, so I can't fix the code itself to solve the issue (but I am not a professional iOS developer, so...).
Partial crash log:
Incident Identifier: 90720807-BB29-40B0-99EA-FCF7D9347CB4
CrashReporter Key: 318d9685fef2ea9c117d9f313ee2a7abc8de6187
Hardware Model: iPhone12,1
Process: OWExtension [2853]
Path: /private/var/containers/Bundle/Application/946320B4-00EB-4DFA-9D83-498BF85B6E89/App.app/PlugIns/OWExtension.appex/OWExtension
Identifier: com.example.ow.OWExtension
Version: 10 (9.99)
Code Type: ARM-64 (Native)
Role: Foreground
Parent Process: launchd [1]
Coalition: com.example.ow.OWExtension [4266]
Date/Time: 2022-01-12 15:51:59.1501 +0300
Launch Time: 2022-01-12 15:50:16.3811 +0300
OS Version: iPhone OS 14.6 (18F72)
Release Type: User
Baseband Version: 2.05.01
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000af7aec290
VM Region Info: 0xaf7aec290 is not in any region. Bytes after previous region: 35830809233 Bytes before following region: 20540636528
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
MALLOC_NANO 280000000-2a0000000 [512.0M] rw-/rwx SM=COW
---> GAP OF 0xd20000000 BYTES
commpage (reserved) fc0000000-1000000000 [ 1.0G] ---/--- SM=NUL ...(unallocated)
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [2853]
Triggered by Thread: 0
Thread 0 name: Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x00000001982c2c80 objc_retain + 16
1 UIKitCore 0x0000000185de7634 _UISetCurrentFallbackEnvironment + 72
2 UIKitCore 0x00000001866066c8 -[_UIViewServiceViewControllerOperator __createViewControllerWithOptions:completionBlock:] + 588
3 CoreFoundation 0x0000000183803774 __invoking___ + 148
4 CoreFoundation 0x00000001836d6d44 -[NSInvocation invoke] + 380
5 CoreFoundation 0x00000001836d7348 -[NSInvocation invokeWithTarget:] + 80
6 UIKitCore 0x0000000186611170 -[_UIViewServiceImplicitAnimationDecodingProxy forwardInvocation:] + 108
7 CoreFoundation 0x0000000183800fe8 ___forwarding___ + 736
8 CoreFoundation 0x00000001838035b0 _CF_forwarding_prep_0 + 96
9 CoreFoundation 0x0000000183803774 __invoking___ + 148
10 CoreFoundation 0x00000001836d6d44 -[NSInvocation invoke] + 380
11 CoreFoundation 0x00000001836d7348 -[NSInvocation invokeWithTarget:] + 80
12 UIKitCore 0x00000001865f7464 -[_UIQueueingProxy forwardInvocation:] + 376
13 CoreFoundation 0x0000000183800fe8 ___forwarding___ + 736
14 CoreFoundation 0x00000001838035b0 _CF_forwarding_prep_0 + 96
15 CoreFoundation 0x0000000183803774 __invoking___ + 148
16 CoreFoundation 0x00000001836d6d44 -[NSInvocation invoke] + 380
17 CoreFoundation 0x00000001836d7348 -[NSInvocation invokeWithTarget:] + 80
18 CoreFoundation 0x0000000183800fe8 ___forwarding___ + 736
19 CoreFoundation 0x00000001838035b0 _CF_forwarding_prep_0 + 96
20 CoreFoundation 0x0000000183803774 __invoking___ + 148
21 CoreFoundation 0x00000001836d6d44 -[NSInvocation invoke] + 380
22 libdispatch.dylib 0x00000001833eb81c _dispatch_client_callout + 20
23 libdispatch.dylib 0x00000001833ef30c _dispatch_block_invoke_direct + 268
24 FrontBoardServices 0x0000000192de3fa0 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 48
25 FrontBoardServices 0x0000000192de3c30 -[FBSSerialQueue _targetQueue_performNextIfPossible] + 448
26 FrontBoardServices 0x0000000192de4184 -[FBSSerialQueue _performNextFromRunLoopSource] + 32
27 CoreFoundation 0x00000001837789e8 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
28 CoreFoundation 0x00000001837788e4 __CFRunLoopDoSource0 + 208
29 CoreFoundation 0x0000000183777be8 __CFRunLoopDoSources0 + 268
30 CoreFoundation 0x0000000183771bc8 __CFRunLoopRun + 820
31 CoreFoundation 0x0000000183771360 CFRunLoopRunSpecific + 600
32 GraphicsServices 0x000000019adaf734 GSEventRunModal + 164
33 UIKitCore 0x00000001861ec584 -[UIApplication _run] + 1072
34 UIKitCore 0x00000001861f1df4 UIApplicationMain + 168
35 libxpc.dylib 0x00000001cf391ba4 _xpc_objc_main + 600
36 libxpc.dylib 0x00000001cf393f1c xpc_main + 180
37 Foundation 0x0000000184a94a18 +[NSXPCListener serviceListener] + 0
38 PlugInKit 0x00000001b420f71c 0x1b41f5000 + 108316
39 PlugInKit 0x00000001b420f344 0x1b41f5000 + 107332
40 PlugInKit 0x00000001b420fb34 0x1b41f5000 + 109364
41 ExtensionKit 0x0000000187ce5fe8 EXExtensionMain + 84
42 Foundation 0x0000000184be370c NSExtensionMain + 200
43 libdyld.dylib 0x000000018342dcf8 start + 4
Thread 1:
0 libsystem_pthread.dylib 0x00000001cf369744 start_wqthread + 0
Thread 2:
0 libsystem_pthread.dylib 0x00000001cf369744 start_wqthread + 0
Thread 3 name: com.apple.uikit.eventfetch-thread
Thread 3:
0 libsystem_kernel.dylib 0x00000001b18f04fc mach_msg_trap + 8
1 libsystem_kernel.dylib 0x00000001b18ef884 mach_msg + 76
2 CoreFoundation 0x0000000183777eb0 __CFRunLoopServiceMachPort + 372
3 CoreFoundation 0x0000000183771d50 __CFRunLoopRun + 1212
4 CoreFoundation 0x0000000183771360 CFRunLoopRunSpecific + 600
5 Foundation 0x0000000184a5efdc -[NSRunLoop+ 32732 (NSRunLoop) runMode:beforeDate:] + 232
6 Foundation 0x0000000184a5eea8 -[NSRunLoop+ 32424 (NSRunLoop) runUntilDate:] + 92
7 UIKitCore 0x00000001862a112c -[UIEventFetcher threadMain] + 516
8 Foundation 0x0000000184bd032c __NSThread__start__ + 864
9 libsystem_pthread.dylib 0x00000001cf360bfc _pthread_start + 320
10 libsystem_pthread.dylib 0x00000001cf369758 thread_start + 8
Thread 4:
0 libsystem_pthread.dylib 0x00000001cf369744 start_wqthread + 0
Thread 5:
0 libsystem_pthread.dylib 0x00000001cf369744 start_wqthread + 0
Thread 0 crashed with ARM Thread State (64-bit):
x0: 0x000000028313c270 x1: 0x00000001d2e24964 x2: 0x0000000000000000 x3: 0x00000001026e454c
x4: 0x000000000000001c x5: 0x000000010288f9a0 x6: 0x0000000000000000 x7: 0x000000000000003e
x8: 0x0000368af7aec270 x9: 0x0000000af7aec270 x10: 0x02000001e5d82d39 x11: 0x03000001e5d82d39
x12: 0x0000000000524980 x13: 0x00000001e5d24f80 x14: 0x0002000110000550 x15: 0x00000001e5d24f80
x16: 0x00000001982c2c70 x17: 0x00000001833eacac x18: 0x0000000000000000 x19: 0x0000000283130000
x20: 0xb5783ab44021d400 x21: 0x0000000109009400 x22: 0x00000001e64656a8 x23: 0x0000000280a280c0
x24: 0x0000000283130000 x25: 0x0000000282e34300 x26: 0x0000000000000000 x27: 0x00000001d2cb7ae4
x28: 0x00000002829281e0 fp: 0x000000016d9917a0 lr: 0x0000000185de7634
sp: 0x000000016d991750 pc: 0x00000001982c2c80 cpsr: 0x20000000
esr: 0x92000006 (Data Abort) byte read Translation fault
Usinng Zombie objects during another debug session I was able to get the following message (I removed the actual address since it does not belong to the presented log)
[UITraitCollection retain]: message sent to deallocated instance 0x...
Maybe someone could shed some light on what's going on here?
