r0 = openat$vcs(0xffffffffffffff9c, &(0x7f00000003c0), 0x0, 0x0)
r1 = syz_open_dev$loop(&(0x7f0000000580), 0x2f, 0x180)
ioctl$LOOP_SET_FD(r1, 0x4c00, r0)