#define _GNU_SOURCE
#include <sched.h>
#include <stdint.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

static void execute1(const int fd)
{
	//  sendmsg$RDMA_NLDEV_CMD_SET arguments: [
	//    fd: sock_nl_rdma (resource)
	//    msg: ptr[in, msghdr_netlink[netlink_msg[RDMA_NLDEV_SET, void,
	//    nldev_policy$SET]]] {
	//      msghdr_netlink[netlink_msg[RDMA_NLDEV_SET, void, nldev_policy$SET]] {
	//        addr: nil
	//        addrlen: len = 0x0 (4 bytes)
	//        pad = 0x0 (4 bytes)
	//        vec: ptr[in, iovec[in, netlink_msg[RDMA_NLDEV_SET, void,
	//        nldev_policy$SET]]] {
	//          iovec[in, netlink_msg[RDMA_NLDEV_SET, void, nldev_policy$SET]] {
	//            addr: ptr[inout, array[ANYUNION]] {
	//              array[ANYUNION] {
	//                union ANYUNION {
	//                  ANYBLOB: buffer: {24 00 00 00 1b 14 01 00 2a bd d4 44 d4
	//                  46 df 25 08 00 01 00 00 00 00 00 09 00 02} (length 0x1b)
	//                }
	//              }
	//            }
	//            len: len = 0x24 (8 bytes)
	//          }
	//        }
	//        vlen: const = 0x1 (8 bytes)
	//        ctrl: const = 0x0 (8 bytes)
	//        ctrllen: const = 0x0 (8 bytes)
	//        f: send_flags = 0x4040891 (4 bytes)
	//        pad = 0x0 (4 bytes)
	//      }
	//    }
	//    f: send_flags = 0x4180 (8 bytes)
	//  ]
	*(uint64_t*)0x200000000140 = 0;
	*(uint32_t*)0x200000000148 = 0;
	*(uint64_t*)0x200000000150 = 0x200000000200;
	*(uint64_t*)0x200000000200 = 0x2000000001c0;
	memcpy((void*)0x2000000001c0,
	       "\x24\x00\x00\x00\x1b\x14\x01\x00\x2a\xbd\xd4\x44\xd4\x46\xdf\x25\x08"
	       "\x00\x01\x00\x00\x00\x00\x00\x09\x00\x02",
	       27);
	*(uint64_t*)0x200000000208 = 0x24;
	*(uint64_t*)0x200000000158 = 1;
	*(uint64_t*)0x200000000160 = 0;
	*(uint64_t*)0x200000000168 = 0;
	*(uint32_t*)0x200000000170 = 0x4040891;
	syscall(__NR_sendmsg, /*fd=*/fd, /*msg=*/0x200000000140ul,
		/*f=MSG_NOSIGNAL|MSG_EOR|0x100*/ 0x4180ul);
}

static void execute2(const int fd)
{
	//  sendmsg$RDMA_NLDEV_CMD_NEWLINK arguments: [
	//    fd: sock_nl_rdma (resource)
	//    msg: ptr[in, msghdr_netlink[netlink_msg[RDMA_NLDEV_NEWLINK, void,
	//    nldev_policy$NEWLINK]]] {
	//      msghdr_netlink[netlink_msg[RDMA_NLDEV_NEWLINK, void,
	//      nldev_policy$NEWLINK]] {
	//        addr: nil
	//        addrlen: len = 0x0 (4 bytes)
	//        pad = 0x0 (4 bytes)
	//        vec: ptr[in, iovec[in, netlink_msg[RDMA_NLDEV_NEWLINK, void,
	//        nldev_policy$NEWLINK]]] {
	//          iovec[in, netlink_msg[RDMA_NLDEV_NEWLINK, void,
	//          nldev_policy$NEWLINK]] {
	//            addr: ptr[in, netlink_msg_t[const[RDMA_NLDEV_NEWLINK, int16],
	//            void, nldev_policy$NEWLINK]] {
	//              netlink_msg_t[const[RDMA_NLDEV_NEWLINK, int16], void,
	//              nldev_policy$NEWLINK] {
	//                len: len = 0x38 (4 bytes)
	//                type: const = 0x1403 (2 bytes)
	//                flags: netlink_msg_flags = 0x1 (2 bytes)
	//                seq: int32 = 0x70bd2d (4 bytes)
	//                pid: int32 = 0x25dffbfb (4 bytes)
	//                payload: buffer: {} (length 0x0)
	//                attrs: array[nldev_policy$NEWLINK] {
	//                  nldev_policy$NEWLINK {
	//                    RDMA_NLDEV_ATTR_DEV_NAME:
	//                    nlattr_t[const[RDMA_NLDEV_ATTR_DEV_NAME, int16],
	//                    string[nldev_name]] {
	//                      nla_len: offsetof = 0x9 (2 bytes)
	//                      nla_type: const = 0x2 (2 bytes)
	//                      payload: buffer: {73 79 7a 31 00} (length 0x5)
	//                      size: buffer: {} (length 0x0)
	//                      pad = 0x0 (3 bytes)
	//                    }
	//                    RDMA_NLDEV_ATTR_LINK_TYPE:
	//                    nlattr_t[const[RDMA_NLDEV_ATTR_LINK_TYPE, int16],
	//                    string[nldev_type]] {
	//                      nla_len: offsetof = 0x8 (2 bytes)
	//                      nla_type: const = 0x41 (2 bytes)
	//                      payload: buffer: {72 78 65 00} (length 0x4)
	//                      size: buffer: {} (length 0x0)
	//                    }
	//                    RDMA_NLDEV_ATTR_NDEV_NAME:
	//                    nlattr_t[const[RDMA_NLDEV_ATTR_NDEV_NAME, int16],
	//                    devname] {
	//                      nla_len: offsetof = 0x14 (2 bytes)
	//                      nla_type: const = 0x33 (2 bytes)
	//                      payload: buffer: {6c 6f 00 00 00 00 00 00 00 00 00 00
	//                      00 00 00 00} (length 0x10) size: buffer: {} (length
	//                      0x0)
	//                    }
	//                  }
	//                }
	//              }
	//            }
	//            len: len = 0x38 (8 bytes)
	//          }
	//        }
	//        vlen: const = 0x1 (8 bytes)
	//        ctrl: const = 0x0 (8 bytes)
	//        ctrllen: const = 0x0 (8 bytes)
	//        f: send_flags = 0x4000840 (4 bytes)
	//        pad = 0x0 (4 bytes)
	//      }
	//    }
	//    f: send_flags = 0x4000 (8 bytes)
	//  ]
	*(uint64_t*)0x200000000000 = 0;
	*(uint32_t*)0x200000000008 = 0;
	*(uint64_t*)0x200000000010 = 0x200000000140;
	*(uint64_t*)0x200000000140 = 0x200000000180;
	*(uint32_t*)0x200000000180 = 0x38;
	*(uint16_t*)0x200000000184 = 0x1403;
	*(uint16_t*)0x200000000186 = 1;
	*(uint32_t*)0x200000000188 = 0x70bd2d;
	*(uint32_t*)0x20000000018c = 0x25dffbfb;
	*(uint16_t*)0x200000000190 = 9;
	*(uint16_t*)0x200000000192 = 2;
	memcpy((void*)0x200000000194, "syz1\000", 5);
	*(uint16_t*)0x20000000019c = 8;
	*(uint16_t*)0x20000000019e = 0x41;
	memcpy((void*)0x2000000001a0, "rxe\000", 4);
	*(uint16_t*)0x2000000001a4 = 0x14;
	*(uint16_t*)0x2000000001a6 = 0x33;
	memcpy((void*)0x2000000001a8,
	       "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
	*(uint64_t*)0x200000000148 = 0x38;
	*(uint64_t*)0x200000000018 = 1;
	*(uint64_t*)0x200000000020 = 0;
	*(uint64_t*)0x200000000028 = 0;
	*(uint32_t*)0x200000000030 = 0x4000840;
	syscall(__NR_sendmsg, /*fd=*/fd, /*msg=*/0x200000000000ul,
		/*f=MSG_NOSIGNAL*/ 0x4000ul);
}

int main(int argc, char *argv[])
{
	syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
		/*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
		/*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
		/*fd=*/(intptr_t)-1, /*offset=*/0ul);
	if (unshare(CLONE_NEWNET))
		return 1;
	int fd = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x14);
	if (fd == -1)
		return 1;
	execute1(fd);
	execute2(fd);
	execute1(fd);
	return 0;
}