sessionprojector.app crashes when disk running out of space

[unstabler]

ENVIRONMENT

• Mac Mini (M1, 2020, 16GB)
• macOS 14 Sonoma (14.0; 23A344)

SUMMARY

// Thread 34 Queue : com.apple.NSXPCConnection.m-user.com.apple.replayd (serial)
// #2	0x0000000100e01e7c in SCScreenRecorder.stream(_:didStopWithError:) at /Users/cheesekun/works/ulalaca/sessionprojector/sessionprojector/recorder/SCScreenRecorder.swift:217

extension SCScreenRecorder: SCStreamDelegate {
    public func stream(_ stream: SCStream, didStopWithError error: Error) {
        logger.error("didStopWithError: \(error.localizedDescription)")
        //                                ^^^^^ Thread 34: EXC_BAD_ACCESS (code=1, address=0x0)

        delegateQueue.async {
            self.delegate?.screenRecorder(didStopWithError: error)
        }
    }
}

; Thread 34 Queue : com.apple.NSXPCConnection.m-user.com.apple.replayd (serial)
; #4	0x00000001f28f71f0 in -[SCStreamManager stream:didStopWithError:] ()

    0x1f28f71d4 <+428>: bl     0x1f291cb80               ; objc_msgSend$delegate
    0x1f28f71d8 <+432>: mov    x29, x29
    0x1f28f71dc <+436>: bl     0x1f290a5f8               ; symbol stub for: objc_retainAutoreleasedReturnValue
    0x1f28f71e0 <+440>: mov    x21, x0
    0x1f28f71e4 <+444>: mov    x2, x22
    0x1f28f71e8 <+448>: mov    x3, x20
    0x1f28f71ec <+452>: bl     0x1f291fa80               ; objc_msgSend$stream:didStopWithError:
->  0x1f28f71f0 <+456>: mov    x0, x21
    0x1f28f71f4 <+460>: bl     0x1f290a5b8               ; symbol stub for: objc_release
    0x1f28f71f8 <+464>: b      0x1f28f7218               ; <+496>
    0x1f28f71fc <+468>: cmp    w8, #0x2
    0x1f28f7200 <+472>: b.hi   0x1f28f7218               ; <+496>


(lldb) register read --all
General Purpose Registers:
       x19 = 0x00006000007039c0
       x20 = 0x0000000000000000 ; <-- ???????????????????????????
       x21 = 0x00006000020c78d0
       x22 = 0x0000600002ec0700
       x23 = 0x0000000000000001
       x24 = 0x0000000000000001
       x25 = 0x0000000000000000
       x26 = 0x0000600002dc0000
       x27 = 0x0000000000000001
       x28 = 0x000060000076eb40
        fp = 0x000000016f0c1f60
        sp = 0x000000016f0c1ef0
        pc = 0x00000001f28f71f0  ScreenCaptureKit`-[SCStreamManager stream:didStopWithError:] + 456
       w19 = 0x007039c0
       w20 = 0x00000000
48 registers were unavailable.

• ScreenCaptureKit calls SCStreamDelegate::stream: (SCStream!) stream didStopWithError: (Error!) error when something is going wrong
  • error parameter is marked as nonnull, but ScreenCaptureKit(or ReplayKit) actually passes nil

어떻게 해야 하지

• Apple에 버그 리포트?

• guard let error = (error as? Any) as? Error 같은 임시 조치를 해야 하는데, 이게 먹을까?

• nonnull이라면서 왜 null인데.. 얼탱이 X

[unstabler]

결론

default	04:25:13.294591+0900	deleted	[0x157759840] activating connection: mach=true listener=false peer=false name=com.apple.replayd-cache-delete
default	04:25:13.295043+0900	replayd	[0x126065bc0] activating connection: mach=false listener=false peer=true name=com.apple.replayd-cache-delete.peer.0x126065bc0
default	04:25:13.295308+0900	replayd	servicePurge QOS: 17
default	04:25:13.295357+0900	replayd	 [INFO] -[RPRecordingManager volumeMatchesCachePath:]:231 _mountOnName=<private>, volume=<private>, match=1
default	04:25:13.295587+0900	replayd	 [INFO] -[RPRecordingManager purge:urgency:]:253 cacheDeleteUrgencyHigh
default	04:25:13.295732+0900	replayd	 [INFO] -[RPClient handleMemoryWarningForCurrentActiveSession]:905
default	04:25:13.295762+0900	replayd	 [INFO] -[RPClient handleMemoryWarningForCurrentActiveSession]:930 We don't have a current active session.
default	04:25:13.296358+0900	replayd	 [INFO] -[RPClient stopAllStreamsWithError:]:1224
default	04:25:13.296392+0900	replayd	 [INFO] -[RPClient notifyManagerCallBack:forStreamID:withContentFilter:withStreamConfig:]:1041 control center client <private> managerStream=3
default	04:25:13.296425+0900	replayd	 [INFO] -[RPClientProxy purgePickersForApplicationBundleID:]:228
default	04:25:13.296648+0900	replayd	 [INFO] -[RPClient stopAllStreamsWithError:]:1224
default	04:25:13.296674+0900	replayd	 [INFO] -[SCCaptureSession stopAndInvalidateWithStreamData:completionHandler:]:771 session=0x126141560 streamID=<private>
default	04:25:13.296827+0900	ControlCenter	 [INFO] -[RPDaemonProxy purgePickersForApplicationBundleID:]:1175
default	04:25:13.296782+0900	replayd	 [INFO] SCRemoteQueue_StopSenderQueue:244 streamID=<private> remoteQueue=0x126109660
default	04:25:13.296839+0900	replayd	 [INFO] SCRemoteQueue_StopSenderQueue:244 streamID=<private> remoteQueue=0x126309c70
default	04:25:13.296971+0900	ControlCenter	 [INFO] -[SCControlCenterManager updatePickersWithType:config:bundleID:]_block_invoke:661 didMatch 0 with type 5 and object (null)
default	04:25:13.296931+0900	replayd	 [INFO] -[SCScreenCaptureSession stopWithError:]:179 0x126512b30: streamID=<private>
default	04:25:13.296973+0900	replayd	-[SLContentStream stop:]: self = 0x12650a190
default	04:25:13.297142+0900	sessionprojector-debug	 [INFO] -[RPDaemonProxy stopRemoteQueue:type:]:1111
default	04:25:13.297250+0900	sessionprojector-debug	 [INFO] -[SCStreamManager stopRemoteQueue:type:]:96 0x6000028b8ec0 streamId=B1E39CEB-3B4F-49A7-954B-4E4BFEC36135
default	04:25:13.297296+0900	sessionprojector-debug	 [INFO] SCRemoteQueue_Destroy:257 remoteQueue=0x6000025cc210
default	04:25:13.297466+0900	replayd	 [INFO] SCCaptureSession_frameHandler:1261 Content stream frame status stopped for session=0x126141560 streamID=<private>
default	04:25:13.298187+0900	sessionprojector-debug	 [INFO] -[RPDaemonProxy stopRemoteQueue:type:]:1111
default	04:25:13.298193+0900	NotificationCenter	Performing scheduled flush of powerlog view entries
default	04:25:13.298261+0900	sessionprojector-debug	 [INFO] -[SCStreamManager stopRemoteQueue:type:]:96 0x6000028b8ec0 streamId=B1E39CEB-3B4F-49A7-954B-4E4BFEC36135
default	04:25:13.298261+0900	NotificationCenter	No powerlog view entries to flush.
default	04:25:13.298324+0900	sessionprojector-debug	 [INFO] SCRemoteQueue_Destroy:257 remoteQueue=0x6000025f2820
default	04:25:13.298671+0900	replayd	 [INFO] +[RPReportingAgent sendReportEventWithType:dictionary:withServiceName:clientBundleId:sessionID:]:105 reported eventType:1
default	04:25:13.298729+0900	replayd	 [INFO] -[SCScreenCaptureSession dealloc]:185 self=0x126512b30
default	04:25:13.298757+0900	replayd	-[SLContentStream dealloc]: self = 0x12650a190
default	04:25:13.298856+0900	WindowServer	Dead sharing context E38B7F09-9D21-4993-B554-67081C217B84
default	04:25:13.298875+0900	WindowServer	Ending sharing context E38B7F09-9D21-4993-B554-67081C217B84
default	04:25:13.299345+0900	replayd	-[SLContentFilter dealloc]: self = 0x12650b900
default	04:25:13.299420+0900	replayd	 [INFO] -[RPClient stopAllStreamsWithError:]_block_invoke:1235 Stopped stream=<private>
default	04:25:13.299463+0900	replayd	 [INFO] -[RPClientProxy stream:didStopWithError:]:164
default	04:25:13.299591+0900	replayd	 [INFO] -[RPClient notifyManagerCallBack:forStreamID:withContentFilter:withStreamConfig:]:1041 control center client <private> managerStream=2
default	04:25:13.299622+0900	replayd	 [INFO] -[RPClientProxy streamDidStopWithConfiguration:contentFilter:]:196
default	04:25:13.299709+0900	sessionprojector-debug	 [INFO] -[RPDaemonProxy stream:didStopWithError:]:1119
default	04:25:13.299860+0900	replayd	 [INFO] -[SCCaptureSession dealloc]:236 session=0x126141560
default	04:25:13.299776+0900	sessionprojector-debug	 [INFO] -[SCStreamManager stream:didStopWithError:]:101 0x6000028b8ec0 didStopWithError=(null) for streamID=B1E39CEB-3B4F-49A7-954B-4E4BFEC36135

• deleted will forcibly stop screen recording session when the disk runs out of space

• 디스크 용량이 없으면 deleted 데몬에서 ReplayKit에게 캐시 삭제를 시킨다.

• ReplayKit은 캐시를 삭제하면서 진행 중인 녹화를 전부 정지한다.

• 그런데 내부 처리에 문제가 있는지 녹화 정지 알림이 나가면서 오류는 null로 나간다 -> 터진다 (^o^)/