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Memory related crash after media upload #20882

Description

@staskus

Description

Parent issue: #20859

This issue requires more investigation. A crash with such a trace could indicate memory issues when observing objects without deinitializing the observer. By looking at app logs, we can see media upload happening and finishing before a KVO_IS_RETAINING_ALL_OBSERVERS_OF_THIS_OBJECT_IF_IT_CRASHES_AN_OBSERVER_WAS_OVERRELEASED_OR_SMASHED crash.

Sentry issues

https://a8c.sentry.io/issues/3138940981/events/7b69e5ef94aa4e77b71fd6b29af1825b/?project=5716771
https://a8c.sentry.io/issues/3138940981/events/2379e20947804bda80962e97177426f3/?project=5716771
https://a8c.sentry.io/issues/3138940981/events/451fdac6b0bf4a66a1ed3b9ba8abbf9a/?project=5716771
https://a8c.sentry.io/issues/3138940981/events/67f54ca6c0094f4daf1651ea98932c75/?project=5716771
https://a8c.sentry.io/issues/3138940981/events/2fa17114d4e143819ac1500f036d2ab6/?project=5716771

Logs

Stack trace

initWithOptions:capacity: >
KERN_INVALID_ADDRESS at 0x1e.

Thread 0 Crashed:
0   libobjc.A.dylib                 0x324c6a4bc         object_isClass
1   Foundation                      0x3270c2078         KVO_IS_RETAINING_ALL_OBSERVERS_OF_THIS_OBJECT_IF_IT_CRASHES_AN_OBSERVER_WAS_OVERRELEASED_OR_SMASHED
2   Foundation                      0x3270f96cc         NSKeyValueWillChangeWithPerThreadPendingNotifications
3   AVFCore                         0x351c1d314         __31-[AVPlayerItem _updateTimebase]_block_invoke_2
4   libdispatch.dylib               0x3414c831c         _dispatch_call_block_and_release
5   libdispatch.dylib               0x3414c9ea8         _dispatch_client_callout
6   libdispatch.dylib               0x3414d86a0         _dispatch_main_queue_drain
7   libdispatch.dylib               0x3414d82f0         _dispatch_main_queue_callback_4CF
8   CoreFoundation                  0x332bc6c24         __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__
9   CoreFoundation                  0x332ba855c         __CFRunLoopRun
10  CoreFoundation                  0x332bad3e8         CFRunLoopRunSpecific
11  GraphicsServices                0x3a95b5358         GSEventRunModal
12  UIKitCore                       0x336fa96e4         -[UIApplication _run]
13  UIKitCore                       0x336fa9348         UIApplicationMain
14  Jetpack                         0x204f75328         main (main.swift:7)
15  <unknown>                       0x1cb08edec         <redacted>

App Logs

2023-06-12 11:17:48:244 Post Coordinator -> Media state: Progress: 0.9982957538795946
2023-06-12 11:17:48:371 Post Coordinator -> Media state: Progress: 0.9999999756470167
2023-06-12 11:17:55:216 🔵 Tracked: media_service_upload_successfu 2023-06-12 11:17:55:234 Post Coordinator -> Media state: Progress: 1.0 

Steps to reproduce the behavior

Haven't reproduced it

Tested on [device], iOS [version], Jetpack iOS / WordPress iOS [version]

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