Crash on [AVCaptureSession addInput] under iOS 10.1.1(14B150)

We found sometime it will crash at [AVCaptureSession addInput] since iOS 10.1.1, never reported for previous OS version, here is the detailed callstacks:


EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000000000000
0  libxpc.dylib                   0x189346e08 xpc_get_type + 474
1  libxpc.dylib                   0x18934d4c0 xpc_dictionary_set_mach_send + 32
2  *********                      0x19175d768 __captureSourceRemote_copyClock_block_invoke + 96
3  CoreMedia                      0x18cc1fa90 __FigAudioDeviceClockRemoteCreateForServerObject_block_invoke + 24
4  CoreMedia                      0x18cc000c4 FigRPCCreateServerConnectionForObject + 564
5  CoreMedia                      0x18cc1fa14 FigAudioDeviceClockRemoteCreateForServerObject + 216
6  *********                      0x19175d340 captureSourceRemote_CopyProperty + 520
7  libdispatch.dylib              0x1891011c0 _dispatch_client_callout + 16
8  libdispatch.dylib              0x18910e860 _dispatch_barrier_sync_f_invoke + 84
9  AVFoundation                   0x1919fe010 -[AVCaptureFigVideoDevice _copyFigCaptureSourceProperty:] + 144
10 AVFoundation                   0x1919fd8bc -[AVCaptureFigVideoDevice deviceClock] + 32
11 AVFoundation                   0x191a05a1c -[AVCaptureInputPort initWithInput:mediaType:formatDescription:enabled:] + 344
12 AVFoundation                   0x191a05820 +[AVCaptureInputPort portWithInput:mediaType:formatDescription:enabled:] + 84
13 AVFoundation                   0x1919eae58 -[AVCaptureDeviceInput ports] + 416
14 AVFoundation                   0x191a10448 -[AVCaptureSession _addInputWithNoConnections:exceptionReason:] + 188
15 AVFoundation                   0x191a0ff88 -[AVCaptureSession addInput:] + 124


# OS Version: 10.1.1 (14B150)

# Device: iPhone 7 Plus
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oeichenwei
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https://discussions.apple.com/thread/7731880?start=0&tstart=0 Is this related?

Posted by
oeichenwei
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This bug was fixed in iOS 10.2 (the "C" release), which was released on December 28, 2016.

Posted by
bford
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I've got a crash report with this same stack from ios 12.0.1



Crashed: session queue


EXC_BAD_ACCESS KERN_INVALID_ADDRESS 0x0000000eec4ce7d0


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libobjc.A.dylib

objc_msgSend + 16

NSKeyValueWillChangeWithPerThreadPendingNotifications.llvm.6024598272766318604 + 580

-[AVCaptureFigVideoDevice setVideoZoomFactor:] + 384

-[AVCaptureSession _updateDeviceActiveFormatsAndActiveConnections] + 2716

-[AVCaptureSession _buildAndRunGraph] + 104

-[AVCaptureSession _commitConfiguration] + 120

-[AVCaptureSession addInput:] + 724


Posted by
lsease
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