clone3(&(0x7f0000001200)={0x0, 0x0, 0x0, 0x0, {}, &(0x7f00000000c0)=""/251, 0xfb, 0x0, &(0x7f00000011c0)=[0x0], 0x1}, 0x58)
ioctl$BTRFS_IOC_GET_SUBVOL_INFO(0xffffffffffffffff, 0x81f8943c, 0x0)