r0 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$BTRFS_IOC_SCRUB(0xffffffffffffffff, 0xc400941b, &(0x7f0000000340))
ioctl$TIOCGSOFTCAR(r0, 0x5419, &(0x7f0000000740))