r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$netlbl_mgmt(&(0x7f0000000640), r1)
sendmsg$NLBL_MGMT_C_ADDDEF(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000040)={0x24, r2, 0x21, 0x0, 0x0, {}, [@NLBL_MGMT_A_IPV4MASK={0x8, 0x8, @loopback}, @NLBL_MGMT_A_PROTOCOL={0x8}]}, 0x24}}, 0x0)