// https://syzkaller.appspot.com/bug?id=fabbe23a08eff0a563eb40d800a3544f32ea5727
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[7] = {0xffffffffffffffff,
                 0xffffffffffffffff,
                 0xffffffffffffffff,
                 0xffffffffffffffff,
                 0xffffffffffffffff,
                 0xffffffffffffffff,
                 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  socket arguments: [
  //    domain: socket_domain = 0x10 (8 bytes)
  //    type: socket_type = 0x803 (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  res = syscall(__NR_socket, /*domain=AF_NETLINK*/ 0x10ul,
                /*type=SOCK_NONBLOCK|SOCK_RAW*/ 0x803ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  //  sendmsg$IPVS_CMD_SET_INFO arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_ipvs_family_id,
  //    genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]]] {
  //      msghdr_netlink[netlink_msg_t[genl_ipvs_family_id,
  //      genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_ipvs_family_id,
  //        genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]]] {
  //          iovec[in, netlink_msg_t[genl_ipvs_family_id,
  //          genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]] {
  //            addr: nil
  //            len: len = 0x14 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000b00 = 0;
  *(uint32_t*)0x200000000b08 = 0;
  *(uint64_t*)0x200000000b10 = 0x200000000ac0;
  *(uint64_t*)0x200000000ac0 = 0;
  *(uint64_t*)0x200000000ac8 = 0x14;
  *(uint64_t*)0x200000000b18 = 1;
  *(uint64_t*)0x200000000b20 = 0;
  *(uint64_t*)0x200000000b28 = 0;
  *(uint32_t*)0x200000000b30 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000b00ul, /*f=*/0ul);
  //  getsockname$packet arguments: [
  //    fd: sock_packet (resource)
  //    addr: ptr[out, sockaddr_ll] {
  //      sockaddr_ll {
  //        sll_family: const = 0x11 (2 bytes)
  //        sll_protocol: packet_protocols = 0x0 (2 bytes)
  //        sll_ifindex: ifindex (resource)
  //        sll_hatype: const = 0x1 (2 bytes)
  //        sll_pkttype: int8 = 0x0 (1 bytes)
  //        sll_halen: const = 0x6 (1 bytes)
  //        sll_addr: union mac_addr {
  //          broadcast: buffer: (DirOut)
  //        }
  //        pad: buffer: (DirOut)
  //      }
  //    }
  //    addrlen: ptr[inout, len] {
  //      len = 0x14 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000200 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x200000000100ul,
                /*addrlen=*/0x200000000200ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x200000000104;
  //  bpf$PROG_LOAD_XDP arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: ptr[in, bpf_prog_t[const[BPF_PROG_TYPE_XDP, int32], const[BPF_XDP,
  //    int32], const[0, int32], const[0, int32]]] {
  //      bpf_prog_t[const[BPF_PROG_TYPE_XDP, int32], const[BPF_XDP, int32],
  //      const[0, int32], const[0, int32]] {
  //        type: const = 0x6 (4 bytes)
  //        ninsn: bytesize8 = 0x4 (4 bytes)
  //        insns: ptr[inout, array[ANYUNION]] {
  //          array[ANYUNION] {
  //            union ANYUNION {
  //              ANYBLOB: buffer: {18 02 00 00 00 00 00 02 00 00 00 00 00 00 00
  //              00 85 00 00 00 17 00 00 00 95} (length 0x19)
  //            }
  //          }
  //        }
  //        license: ptr[in, buffer] {
  //          buffer: {47 50 4c 00} (length 0x4)
  //        }
  //        loglev: int32 = 0x0 (4 bytes)
  //        logsize: len = 0x0 (4 bytes)
  //        log: nil
  //        kern_version: bpf_kern_version = 0x0 (4 bytes)
  //        flags: bpf_prog_load_flags = 0x0 (4 bytes)
  //        prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) prog_ifindex: ifindex (resource) expected_attach_type:
  //        const = 0x25 (4 bytes) btf_fd: fd_btf (resource) func_info_rec_size:
  //        const = 0x8 (4 bytes) func_info: nil func_info_cnt: len = 0x0 (4
  //        bytes) line_info_rec_size: const = 0x10 (4 bytes) line_info: nil
  //        line_info_cnt: len = 0x0 (4 bytes)
  //        attach_btf_id: const = 0x0 (4 bytes)
  //        attach_prog_fd: const = 0x0 (4 bytes)
  //        core_relo_cnt: len = 0x0 (4 bytes)
  //        fd_array: nil
  //        core_relos: nil
  //        core_relo_rec_size: const = 0x10 (4 bytes)
  //        log_true_size: int32 = 0x0 (4 bytes)
  //        prog_token_fd: union _bpf_prog_t[const[BPF_PROG_TYPE_XDP, int32],
  //        const[BPF_XDP, int32], const[0, int32], const[0,
  //        int32]]_prog_token_fd_wrapper {
  //          void: buffer: {} (length 0x0)
  //        }
  //        pad: union _bpf_prog_t[const[BPF_PROG_TYPE_XDP, int32],
  //        const[BPF_XDP, int32], const[0, int32], const[0, int32]]_pad_wrapper
  //        {
  //          value: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    size: len = 0x94 (8 bytes)
  //  ]
  //  returns fd_bpf_prog_xdp
  *(uint32_t*)0x200000000780 = 6;
  *(uint32_t*)0x200000000784 = 4;
  *(uint64_t*)0x200000000788 = 0x200000000580;
  memcpy((void*)0x200000000580,
         "\x18\x02\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x85"
         "\x00\x00\x00\x17\x00\x00\x00\x95",
         25);
  *(uint64_t*)0x200000000790 = 0x2000000005c0;
  memcpy((void*)0x2000000005c0, "GPL\000", 4);
  *(uint32_t*)0x200000000798 = 0;
  *(uint32_t*)0x20000000079c = 0;
  *(uint64_t*)0x2000000007a0 = 0;
  *(uint32_t*)0x2000000007a8 = 0;
  *(uint32_t*)0x2000000007ac = 0;
  memset((void*)0x2000000007b0, 0, 16);
  *(uint32_t*)0x2000000007c0 = 0;
  *(uint32_t*)0x2000000007c4 = 0x25;
  *(uint32_t*)0x2000000007c8 = -1;
  *(uint32_t*)0x2000000007cc = 8;
  *(uint64_t*)0x2000000007d0 = 0;
  *(uint32_t*)0x2000000007d8 = 0;
  *(uint32_t*)0x2000000007dc = 0x10;
  *(uint64_t*)0x2000000007e0 = 0;
  *(uint32_t*)0x2000000007e8 = 0;
  *(uint32_t*)0x2000000007ec = 0;
  *(uint32_t*)0x2000000007f0 = 0;
  *(uint32_t*)0x2000000007f4 = 0;
  *(uint64_t*)0x2000000007f8 = 0;
  *(uint64_t*)0x200000000800 = 0;
  *(uint32_t*)0x200000000808 = 0x10;
  *(uint32_t*)0x20000000080c = 0;
  *(uint32_t*)0x200000000810 = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000780ul, /*size=*/0x94ul);
  if (res != -1)
    r[3] = res;
  //  socket arguments: [
  //    domain: socket_domain = 0x10 (8 bytes)
  //    type: socket_type = 0x803 (8 bytes)
  //    proto: int32 = 0x8 (4 bytes)
  //  ]
  //  returns sock
  res = syscall(__NR_socket, /*domain=AF_NETLINK*/ 0x10ul,
                /*type=SOCK_NONBLOCK|SOCK_RAW*/ 0x803ul, /*proto=*/8);
  if (res != -1)
    r[4] = res;
  //  sendmsg$IPVS_CMD_SET_INFO arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_ipvs_family_id,
  //    genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]]] {
  //      msghdr_netlink[netlink_msg_t[genl_ipvs_family_id,
  //      genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_ipvs_family_id,
  //        genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]]] {
  //          iovec[in, netlink_msg_t[genl_ipvs_family_id,
  //          genlmsghdr_t[IPVS_CMD_SET_INFO], ip_vs_cmd_policy]] {
  //            addr: nil
  //            len: len = 0x2d (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x8801 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x8000 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000b00 = 0;
  *(uint32_t*)0x200000000b08 = 0;
  *(uint64_t*)0x200000000b10 = 0x200000000ac0;
  *(uint64_t*)0x200000000ac0 = 0;
  *(uint64_t*)0x200000000ac8 = 0x2d;
  *(uint64_t*)0x200000000b18 = 1;
  *(uint64_t*)0x200000000b20 = 0;
  *(uint64_t*)0x200000000b28 = 0;
  *(uint32_t*)0x200000000b30 = 0x8801;
  syscall(__NR_sendmsg, /*fd=*/r[4], /*msg=*/0x200000000b00ul,
          /*f=MSG_MORE*/ 0x8000ul);
  //  socket$netlink arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: netlink_proto = 0x0 (4 bytes)
  //  ]
  //  returns sock_netlink
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[5] = res;
  //  getsockname$packet arguments: [
  //    fd: sock_packet (resource)
  //    addr: ptr[out, sockaddr_ll] {
  //      sockaddr_ll {
  //        sll_family: const = 0x11 (2 bytes)
  //        sll_protocol: packet_protocols = 0x0 (2 bytes)
  //        sll_ifindex: ifindex (resource)
  //        sll_hatype: const = 0x1 (2 bytes)
  //        sll_pkttype: int8 = 0x0 (1 bytes)
  //        sll_halen: const = 0x6 (1 bytes)
  //        sll_addr: union mac_addr {
  //          broadcast: buffer: (DirOut)
  //        }
  //        pad: buffer: (DirOut)
  //      }
  //    }
  //    addrlen: ptr[inout, len] {
  //      len = 0x14 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000180 = 0x14;
  res = syscall(__NR_getsockname, /*fd=*/r[4], /*addr=*/0x200000000600ul,
                /*addrlen=*/0x200000000180ul);
  if (res != -1)
    r[6] = *(uint32_t*)0x200000000604;
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
  //      msghdr_netlink[netlink_msg_route] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route]] {
  //          iovec[in, netlink_msg_route] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {3c 00 00 00 10 00 85 06 00 00 00 00 ff
  //                  61 22 31 4a 00 08 00} (length 0x14)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {00 00 10 00 25 21 55 b2 1c 00 12 00 0c
  //                  00 01 00 62 6f 6e 64} (length 0x14)
  //                }
  //              }
  //            }
  //            len: len = 0x3c (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x40000 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000040 = 0;
  *(uint32_t*)0x200000000048 = 0;
  *(uint64_t*)0x200000000050 = 0x200000000000;
  *(uint64_t*)0x200000000000 = 0x200000000640;
  memcpy((void*)0x200000000640,
         "\x3c\x00\x00\x00\x10\x00\x85\x06\x00\x00\x00\x00\xff\x61\x22\x31\x4a"
         "\x00\x08\x00",
         20);
  *(uint32_t*)0x200000000654 = r[6];
  memcpy((void*)0x200000000658,
         "\x00\x00\x10\x00\x25\x21\x55\xb2\x1c\x00\x12\x00\x0c\x00\x01\x00\x62"
         "\x6f\x6e\x64",
         20);
  *(uint64_t*)0x200000000008 = 0x3c;
  *(uint64_t*)0x200000000058 = 1;
  *(uint64_t*)0x200000000060 = 0;
  *(uint64_t*)0x200000000068 = 0;
  *(uint32_t*)0x200000000070 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[5], /*msg=*/0x200000000040ul,
          /*f=MSG_BATCH*/ 0x40000ul);
  //  bpf$BPF_LINK_CREATE_XDP arguments: [
  //    cmd: const = 0x1c (8 bytes)
  //    arg: ptr[in, bpf_link_create_arg_t[fd_bpf_prog_xdp, ifindex,
  //    const[BPF_XDP, int32], flags[xdp_flags, int32]]] {
  //      bpf_link_create_arg_t[fd_bpf_prog_xdp, ifindex, const[BPF_XDP, int32],
  //      flags[xdp_flags, int32]] {
  //        prog_fd: fd_bpf_prog_xdp (resource)
  //        target_fd: ifindex (resource)
  //        attach_type: const = 0x25 (4 bytes)
  //        flags: xdp_flags = 0x0 (4 bytes)
  //        extra: union optional[link_create_arg_extra] {
  //          val: union link_create_arg_extra {
  //            netkit: link_create_netkit {
  //              relative_link_fd: union
  //              _link_create_netkit_relative_link_fd_wrapper {
  //                void: buffer: {} (length 0x0)
  //              }
  //              relative_prog_fd: union
  //              _link_create_netkit_relative_prog_fd_wrapper {
  //                value: fd_bpf_prog (resource)
  //              }
  //              relative_link_id: union
  //              _link_create_netkit_relative_link_id_wrapper {
  //                void: buffer: {} (length 0x0)
  //              }
  //              relative_prog_id: union
  //              _link_create_netkit_relative_prog_id_wrapper {
  //                void: buffer: {} (length 0x0)
  //              }
  //              exp_revision: bpf_revision (resource)
  //            }
  //          }
  //        }
  //      }
  //    }
  //    size: len = 0x1c (8 bytes)
  //  ]
  //  returns fd_bpf_link
  *(uint32_t*)0x2000000001c0 = r[3];
  *(uint32_t*)0x2000000001c4 = r[6];
  *(uint32_t*)0x2000000001c8 = 0x25;
  *(uint32_t*)0x2000000001cc = 0;
  *(uint32_t*)0x2000000001d0 = r[3];
  *(uint64_t*)0x2000000001d4 = 0;
  syscall(__NR_bpf, /*cmd=*/0x1cul, /*arg=*/0x2000000001c0ul, /*size=*/0x1cul);
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
  //      msghdr_netlink[netlink_msg_route] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route]] {
  //          iovec[in, netlink_msg_route] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {3c 00 00 00 10 00 03 04 00 00 00 00 00
  //                  00 00 00 00 00 00 00} (length 0x14)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {46 ff 0f 00 00 00 00 00 1c 00 12 80 09
  //                  00 01 00 62 6f 6e 64 00 00 00 00 0c 00 02 80 05 00 01 00
  //                  05} (length 0x21)
  //                }
  //              }
  //            }
  //            len: len = 0x3c (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x690 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x20048040 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000280 = 0;
  *(uint32_t*)0x200000000288 = 0;
  *(uint64_t*)0x200000000290 = 0x200000000140;
  *(uint64_t*)0x200000000140 = 0x2000000005c0;
  memcpy((void*)0x2000000005c0,
         "\x3c\x00\x00\x00\x10\x00\x03\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x00",
         20);
  *(uint32_t*)0x2000000005d4 = r[2];
  memcpy((void*)0x2000000005d8,
         "\x46\xff\x0f\x00\x00\x00\x00\x00\x1c\x00\x12\x80\x09\x00\x01\x00\x62"
         "\x6f\x6e\x64\x00\x00\x00\x00\x0c\x00\x02\x80\x05\x00\x01\x00\x05",
         33);
  *(uint64_t*)0x200000000148 = 0x3c;
  *(uint64_t*)0x200000000298 = 1;
  *(uint64_t*)0x2000000002a0 = 0;
  *(uint64_t*)0x2000000002a8 = 0;
  *(uint32_t*)0x2000000002b0 = 0x690;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000280ul,
          /*f=MSG_FASTOPEN|MSG_BATCH|MSG_MORE|MSG_DONTWAIT*/ 0x20048040ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  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);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}