Issue: Recurring crash in block_destroy_helper under -[SKTCapture didReceiveEvent:] on CaptureServiceConsumeOperationQueue

[cyrille-socket]

Your Socket Mobile Developer ID

38D154EE-F5D6-4B52-871B-6942711FC366

Environment

Various iPadOS versions
CaptureSDK 2.0.73
Device: e.g. SocketScan S700

Description

We see a recurring crash inside CaptureSDK. It manifests as a use-after-free (EXC_BAD_ACCESS @ 0x0) during block teardown on the CaptureServiceConsumeOperationQueue.

Crashed: CaptureServiceConsumeOperationQueue (QOS: UNSPECIFIED)
EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000
0 CaptureSDK block_destroy_helper + 18636
1 CaptureSDK block_destroy_helper + 18632
2 CaptureSDK block_destroy_helper + 5416
3 CaptureSDK -[SKTCapture didReceiveEvent:withHandle:withResult:] + 164
4 CaptureSDK -[SKTCaptureServiceDirect consumeFromCaptureHandle:] + 628
5 CaptureSDK __72-[SKTCaptureServiceDirect doConsumeFromCaptureHandle:completionHandler:]_block_invoke + 28
6 Foundation <deduplicated_symbol> + 24
7 Foundation -[NSBlockOperation main] + 88
8 Foundation __NSOPERATION_IS_INVOKING_MAIN__ + 16
9 Foundation -[NSOperation start] + 640
10 Foundation __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 16
11 Foundation __NSOQSchedule_f + 164
12 libdispatch.dylib _dispatch_block_async_invoke2 + 148
13 libdispatch.dylib
_dispatch_client_callout + 16
14 libdispatch.dylib _dispatch_continuation_pop + 596
15 libdispatch.dylib _dispatch_async_redirect_invoke + 580
16 libdispatch.dylib _dispatch_root_queue_drain + 360
17 libdispatch.dylib _dispatch_worker_thread2 + 184
18 libsystem_pthread.dylib _pthread_wqthread + 232
19 libsystem_pthread.dylib
start_wqthread + 8 

Steps to Reproduce

Unknown

Expected Behavior

No crash

Actual Behavior

Crash

Additional Context

No response