perf_event_open(0x0, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0)
ioctl$BTRFS_IOC_BALANCE_CTL(0xffffffffffffffff, 0x40049421, 0x0)
r0 = syz_open_dev$loop(&(0x7f0000000600), 0x0, 0x0)
ioctl$LOOP_GET_STATUS(r0, 0x4c03, &(0x7f0000000100))