in iOS15 beta we found a crash, such use like "[AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo]"
*** -initWithReferencedObject: only defined for abstract class. Define -[AVWeakReference initWithReferencedObject:]!
(
0 CoreFoundation 0x0000000181f72fa4 4B514B9D-2B35-32CA-A93F-481D3A903177 + 888740
1 libobjc.A.dylib 0x000000019a62e21c objc_exception_throw + 60
2 CoreFoundation 0x0000000181fffce0 4B514B9D-2B35-32CA-A93F-481D3A903177 + 1465568
3 AVFCore 0x000000018b084338 AVRequestConcreteImplementation + 168
4 AVFCore 0x000000018b085d2c E320209B-2A8E-3399-8F24-05EA58FD6970 + 1301804
5 AVFCapture 0x00000001a083800c 1DD1D696-A915-362D-9AAB-3A89AECCE95B + 32780
6 AVFCapture 0x00000001a0837e80 1DD1D696-A915-362D-9AAB-3A89AECCE95B + 32384
7 AVFCapture 0x00000001a083a14c 1DD1D696-A915-362D-9AAB-3A89AECCE95B + 41292
8 AVFCapture 0x00000001a086e0c0 1DD1D696-A915-362D-9AAB-3A89AECCE95B + 254144
9 AVFCapture 0x00000001a0878d84 1DD1D696-A915-362D-9AAB-3A89AECCE95B + 298372
bigbang
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Test package found flash back, normal memory, no crash, only wakeups log，I wonder if wakeups causes a crash。TF packages are normal。
I see the kernel code is set fatal to stop task。