CVE-2023-53349

In the Linux kernel, the following vulnerability has been resolved:

media: ov2740: Fix memleak in ov2740initcontrols()

There is a kmemleak when testing the media/i2c/ov2740.c with bpf mock device:

unreferenced object 0xffff8881090e19e0 (size 16): comm "51-i2c-ov2740", pid 278, jiffies 4294781584 (age 23.613s) hex dump (first 16 bytes): 00 f3 7c 0b 81 88 ff ff 80 75 6a 09 81 88 ff ff ..|......uj..... backtrace: [<000000004e9fad8f>] __kmallocnode+0x44/0x1b0 [<0000000039c802f4>] kvmallocnode+0x34/0x180 [<000000009b8b5c63>] v4l2ctrlhandlerinitclass+0x11d/0x180 [videodev] [<0000000038644056>] ov2740probe+0x37d/0x84f [ov2740] [<0000000092489f59>] i2cdeviceprobe+0x28d/0x680 [<000000001038babe>] reallyprobe+0x17c/0x3f0 [<0000000098c7af1c>] __driverprobedevice+0xe3/0x170 [<00000000e1b3dc24>] devicedriverattach+0x34/0x80 [<000000005a04a34d>] bindstore+0x10b/0x1a0 [<00000000ce25d4f2>] drvattrstore+0x49/0x70 [<000000007d9f4e9a>] sysfskfwrite+0x8c/0xb0 [<00000000be6cff0f>] kernfsfopwriteiter+0x216/0x2e0 [<0000000031ddb40a>] vfswrite+0x658/0x810 [<0000000041beecdd>] ksyswrite+0xd6/0x1b0 [<0000000023755840>] dosyscall64+0x38/0x90 [<00000000b2cc2da2>] entrySYSCALL64afterhwframe+0x63/0xcd

ov2740initcontrols() won't clean all the allocated resources in fail path, which may causes the memleaks. Add v4l2ctrlhandler_free() to prevent memleak.