socket$nl_generic(0x10, 0x3, 0x10) sendmsg$BATADV_CMD_SET_HARDIF(0xffffffffffffffff, 0x0, 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000a80)='./cgroup/syz1\x00', 0x200002, 0x0)