[BUG] Crash in ImageScanningConcurrencyManager.__deallocating_deinit

[nalexn]

Summary

Stripe identity verification is crashing for some of our users.

EXC_BREAKPOINT ImageScanningConcurrencyManager.__deallocating_deinit
BUG IN CLIENT OF LIBDISPATCH: Semaphore object deallocated while in use

Stack trace:

Crashed background thread:
0
libdispatch.dylib
__dispatch_semaphore_dispose$VARIANT$mp.cold.1
1
libdispatch.dylib
__dispatch_semaphore_dispose$VARIANT$mp
2
libdispatch.dylib
__dispatch_dispose$VARIANT$mp
3
myapp
<compiler-generated>
ImageScanningConcurrencyManager.__deallocating_deinit
4
libswiftCore.dylib
__swift_release_dealloc
5
libswiftCore.dylib
bool swift::HeapObjectSideTableEntry::decrementStrong
6
myapp
<compiler-generated>
closure #3 in ImageScanningConcurrencyManager.scanImage
7
myapp
<compiler-generated>
thunk for () -> ()
8
libdispatch.dylib
__dispatch_call_block_and_release
9
libdispatch.dylib
__dispatch_client_callout
10
libdispatch.dylib
__dispatch_continuation_pop$VARIANT$mp
11
libdispatch.dylib
__dispatch_async_redirect_invoke
12
libdispatch.dylib
__dispatch_root_queue_drain
13
libdispatch.dylib
__dispatch_worker_thread2
14
libsystem_pthread.dylib
__pthread_wqthread

---

Main thread:

0
libobjc.A.dylib
weak_entry_for_referent
1
libobjc.A.dylib
_weak_register_no_lock
2
libobjc.A.dylib
_objc_storeWeak
3
Foundation
-[NSConcreteMapTable assign:key:value:isNew:]
4
Foundation
-[NSConcreteMapTable setObject:forKey:]
5
AVFCapture
+[AVCaptureSession _startConfiguringProperty:forDevice:]
6
AVFCapture
-[AVCaptureSession _updateVideoHDREnabledForDevice:forceResetVideoHDRSuspended:]
7
AVFCapture
-[AVCaptureSession _updateDeviceActiveFormatsAndActiveConnections]
8
AVFCapture
-[AVCaptureSession _buildAndRunGraph:]
9
AVFCapture
-[AVCaptureSession _commitConfiguration]
10
AVFCapture
-[AVCaptureVideoPreviewLayer dealloc]
11
Foundation
_NSKVODeallocate
12
QuartzCore
CA::Layer::free_transaction
13
QuartzCore
CA::Transaction::commit()
14
QuartzCore
CA::Transaction::flush_as_runloop_observer
15
CoreFoundation
___CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__
16
CoreFoundation
___CFRunLoopDoObservers
17
CoreFoundation
___CFRunLoopRun
18
CoreFoundation
_CFRunLoopRunSpecific
19
GraphicsServices
_GSEventRunModal
20
UIKitCore
-[UIApplication _run]
21
UIKitCore
_UIApplicationMain
22
myapp
AppDelegate.swift:17:13
main
23
dyld
start

iOS version

A wide range of users from iOS 15 through iOS 16

Installation method

SPM

SDK version

23.9.1