Hello everyone!
Recently my watch app has been receiving a lot of crash reports, all of them from watchOS 9.0 and 9.1. The crash reports suggest SIGNAL 11 Segmentation fault: 11 crash, and the call stack is located in the WatchConnectivity framework -[WCSession onqueue_ sendMessageData:replyHandler:errorHandler:dictionaryMessage:] + 340 (WCSession.m:674). Now it has become the most common crash of my app.
As I understand it, Segmentation fault: 11 suggests some binary or compiler-level problem. Maybe the way I'm calling the API is triggering a problem within the system?
Sample Crash Log:
Incident Identifier: xxx
Hardware Model: Watch6,9
Process: WatchApp [2338]
Path: xxx
Identifier: io.qifeng.HiCoffee.watchkitapp
Version: 4.1.1 (7992)
AppStoreTools: 14A305
AppVariant: 1:Watch6,9:8
Code Type: 0200000C (Native)
Role: unknown
Parent Process: launchd [1]
Coalition: io.qifeng.HiCoffee.watchkitapp [450]
Date/Time: 2022-10-11 07:14:55.0777 +0200
OS Version: Watch OS 9.0 (20R361)
Release Type: User
Baseband Version: 5.00.00
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000004
Exception Codes: 0x0000000000000001, 0x0000000000000004
VM Region Info: 0x4 is not in any region. Bytes before following region: 68141052
REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL
UNUSED SPACE AT START
--->
__TEXT 40fc000-4100000 [ 16K] r-x/r-x SM=COW ....app/WatchApp
Termination Reason: SIGNAL 11 Segmentation fault: 11
Terminating Process: exc handler [2338]
Triggered by Thread: 7
Thread 0 name:
Thread 0:
0 WatchApp 0x000000000418f1dc @objc ComplicationController2.getComplicationDescriptors(handler:) + 0 (<compiler-generated>:0)
1 libdispatch.dylib 0x000000002ba6b590 _dispatch_call_block_and_release + 24 (init.c:1518)
2 libdispatch.dylib 0x000000002ba6cd7c _dispatch_client_callout + 16 (object.m:560)
3 libdispatch.dylib 0x000000002ba7a114 _dispatch_main_queue_drain + 800 (inline_internal.h:2631)
4 libdispatch.dylib 0x000000002ba79de4 _dispatch_main_queue_callback_4CF + 40 (queue.c:7804)
...
Thread 1 name:
Thread 1:
0 libsystem_kernel.dylib 0x000000002c81c18c __ulock_wake + 8
...
Thread 2 name:
Thread 2:
0 libsystem_kernel.dylib 0x000000002c81b0f8 kevent_qos + 8
...
Thread 6 name:
Thread 6:
0 WatchConnectivity 0x000000005350996c __31-[WCXPCManager setupConnection]_block_invoke_2 + 0 (WCXPCManager.m:92)
1 libdispatch.dylib 0x000000002ba6b590 _dispatch_call_block_and_release + 24 (init.c:1518)
2 libdispatch.dylib 0x000000002ba6cd7c _dispatch_client_callout + 16 (object.m:560)
3 libdispatch.dylib 0x000000002ba73968 _dispatch_lane_serial_drain + 548 (inline_internal.h:2631)
4 libdispatch.dylib 0x000000002ba74454 _dispatch_lane_invoke + 388 (queue.c:3939)
5 libdispatch.dylib 0x000000002ba7e2a4 _dispatch_workloop_worker_thread + 628 (queue.c:6766)
6 libsystem_pthread.dylib 0x000000006580947c _pthread_wqthread + 280 (pthread.c:2618)
7 libsystem_pthread.dylib 0x000000006580951c start_wqthread + 8
Thread 7 name:
Thread 7 Crashed: ☠️☠️☠️
0 libdispatch.dylib 0x000000002ba81fd4 dispatch_source_cancel + 8 (inline_internal.h:231)
1 WatchConnectivity 0x00000000534f84b4 __81-[WCSession onqueue_sendMessageData:replyHandler:errorHandler:dictionaryMessage:]_block_invoke + 48 (WCSession.m:675)
2 libdispatch.dylib 0x000000002ba6cd7c _dispatch_client_callout + 16 (object.m:560)
3 libdispatch.dylib 0x000000002ba6fe7c _dispatch_continuation_pop + 388 (inline_internal.h:2631)
4 libdispatch.dylib 0x000000002ba81a90 _dispatch_source_invoke + 1760 (source.c:596)
5 libdispatch.dylib 0x000000002ba7cfe8 _dispatch_root_queue_drain + 332 (inline_internal.h:0)
6 libdispatch.dylib 0x000000002ba7d7a4 _dispatch_worker_thread2 + 168 (queue.c:6969)
7 libsystem_pthread.dylib 0x0000000065809440 _pthread_wqthread + 220 (pthread.c:2631)
8 libsystem_pthread.dylib 0x000000006580951c start_wqthread + 8
Thread 8 name:
Thread 8:
0 libsystem_kernel.dylib 0x000000002c81e210 kevent + 8
...
Thread 9:
0 WatchApp 0x000000000458cd70 monitorCachedData + 756 (KSCrashCachedData.c:0)
...
Thread 10:
0 libsystem_pthread.dylib 0x0000000065809514 start_wqthread + 0
I am currently unable to reproduce this problem on my own. Do you have any good suggestions for me?
