ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF(0xffffffffffffffff, 0xd000943d, 0x0)
r0 = openat$sr(0xffffffffffffff9c, &(0x7f0000000940), 0xe8e82, 0x0)
ioctl$SG_IO(r0, 0x301, &(0x7f00000003c0)={0x0, 0x0, 0x0, 0x0, @scatter={0x0, 0x0, 0x0}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0})
sendmsg$DEVLINK_CMD_RATE_NEW(0xffffffffffffffff, 0x0, 0x0)