r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$netlbl_mgmt(&(0x7f0000001540), r0) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NLBL_MGMT_C_ADDDEF(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f0000000100)={0x38, r1, 0x36b2b33c54a1e117, 0x0, 0x0, {}, [@NLBL_MGMT_A_PROTOCOL={0x8}, @NLBL_MGMT_A_IPV6MASK={0x14, 0x6, @loopback}, @NLBL_MGMT_A_IPV4MASK={0x8, 0x8, @initdev={0xac, 0x1e, 0x0, 0x0}}]}, 0x38}}, 0x0)