// https://syzkaller.appspot.com/bug?id=cb9f0a2358d525100fadf9d82b281f9d888911b8
// 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/mount.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>

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;
}

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  openat$tun arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 6e 65 74 2f 74 75 6e 00} (length 0xd)
  //    }
  //    flags: open_flags = 0x40241 (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd_tun
  memcpy((void*)0x200000000100, "/dev/net/tun\000", 13);
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x200000000100ul,
      /*flags=O_TRUNC|O_NOATIME|O_CREAT|O_WRONLY*/ 0x40241, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  ioctl$TUNSETIFF arguments: [
  //    fd: fd_tun (resource)
  //    cmd: const = 0x400454ca (4 bytes)
  //    arg: ptr[in, ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]]] {
  //      ifreq_dev_t[devnames, flags[tun_setiff_flags, int16]] {
  //        ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 31 00 00 00 00 00 00}
  //        (length 0x10) elem: tun_setiff_flags = 0xc201 (2 bytes) pad = 0x0
  //        (22 bytes)
  //      }
  //    }
  //  ]
  memcpy((void*)0x200000000140, "syzkaller1\000\000\000\000\000\000", 16);
  *(uint16_t*)0x200000000150 = 0xc201;
  syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x400454ca,
          /*arg=*/0x200000000140ul);
  //  socket$kcm arguments: [
  //    domain: const = 0x2 (8 bytes)
  //    type: kcm_socket_type = 0xa (8 bytes)
  //    proto: const = 0x2 (4 bytes)
  //  ]
  //  returns sock_kcm
  res = syscall(__NR_socket, /*domain=*/2ul, /*type=SOCK_DGRAM|0x8*/ 0xaul,
                /*proto=*/2);
  if (res != -1)
    r[1] = res;
  //  ioctl$SIOCSIFHWADDR arguments: [
  //    fd: fd_tun (resource)
  //    cmd: const = 0x8914 (4 bytes)
  //    arg: ptr[in, ifreq_dev_t[devnames, mac_addr]] {
  //      ifreq_dev_t[devnames, mac_addr] {
  //        ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 31 00 00 00 00 00 00}
  //        (length 0x10) elem: union mac_addr {
  //          link_local: mac_addr_link_local {
  //            a0: const = 0x1 (1 bytes)
  //            a1: const = 0x80 (1 bytes)
  //            a2: const = 0xc2 (1 bytes)
  //            a3: const = 0x0 (1 bytes)
  //            a4: const = 0x0 (1 bytes)
  //            a5: mac_addr_link_local_values = 0x0 (1 bytes)
  //          }
  //        }
  //        pad = 0x0 (18 bytes)
  //      }
  //    }
  //  ]
  memcpy((void*)0x200000000180, "syzkaller1\000\000\000\000\000\000", 16);
  *(uint8_t*)0x200000000190 = 1;
  *(uint8_t*)0x200000000191 = 0x80;
  *(uint8_t*)0x200000000192 = 0xc2;
  *(uint8_t*)0x200000000193 = 0;
  *(uint8_t*)0x200000000194 = 0;
  *(uint8_t*)0x200000000195 = 0;
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x8914, /*arg=*/0x200000000180ul);
  //  socket$nl_route arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_nl_route
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[2] = res;
  //  socket$unix arguments: [
  //    domain: const = 0x1 (8 bytes)
  //    type: unix_socket_type = 0x3 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_unix
  res = syscall(__NR_socket, /*domain=*/1ul,
                /*type=SOCK_DGRAM|SOCK_STREAM*/ 3ul, /*proto=*/0);
  if (res != -1)
    r[3] = res;
  //  ioctl$sock_SIOCGIFINDEX arguments: [
  //    fd: sock (resource)
  //    cmd: const = 0x8933 (4 bytes)
  //    arg: ptr[out, ifreq_dev_t[devnames, ifindex]] {
  //      ifreq_dev_t[devnames, ifindex] {
  //        ifr_ifrn: buffer: {73 79 7a 6b 61 6c 6c 65 72 31 00 00 00 00 00 00}
  //        (length 0x10) elem: ifindex (resource) pad = 0x0 (20 bytes)
  //      }
  //    }
  //  ]
  memcpy((void*)0x2000000001c0, "syzkaller1\000\000\000\000\000\000", 16);
  res = syscall(__NR_ioctl, /*fd=*/r[3], /*cmd=*/0x8933,
                /*arg=*/0x2000000001c0ul);
  if (res != -1)
    r[4] = *(uint32_t*)0x2000000001d0;
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newqdisc: netlink_msg_t[const[RTM_NEWQDISC, int16],
  //                tcmsg[AF_UNSPEC], rtm_tca_policy] {
  //                  len: len = 0x30 (4 bytes)
  //                  type: const = 0x24 (2 bytes)
  //                  flags: netlink_msg_flags = 0x601 (2 bytes)
  //                  seq: int32 = 0x0 (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xfff1 (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x0 (2 bytes)
  //                      major: tcm_handle_offsets = 0x0 (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[rtm_tca_policy] {
  //                    union rtm_tca_policy {
  //                      qdisc_kind_options: union qdisc_kind_options {
  //                        q_ingress: nlattr_t[const[TCA_KIND, int16],
  //                        string["ingress"]] {
  //                          nla_len: offsetof = 0xc (2 bytes)
  //                          nla_type: const = 0x1 (2 bytes)
  //                          payload: buffer: {69 6e 67 72 65 73 73 00} (length
  //                          0x8) size: buffer: {} (length 0x0)
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x30 (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*)0x200000000200 = 0;
  *(uint32_t*)0x200000000208 = 0;
  *(uint64_t*)0x200000000210 = 0x200000000240;
  *(uint64_t*)0x200000000240 = 0x2000000002c0;
  *(uint32_t*)0x2000000002c0 = 0x30;
  *(uint16_t*)0x2000000002c4 = 0x24;
  *(uint16_t*)0x2000000002c6 = 0x601;
  *(uint32_t*)0x2000000002c8 = 0;
  *(uint32_t*)0x2000000002cc = 0;
  *(uint8_t*)0x2000000002d0 = 0;
  *(uint8_t*)0x2000000002d1 = 0;
  *(uint16_t*)0x2000000002d2 = 0;
  *(uint32_t*)0x2000000002d4 = r[4];
  *(uint16_t*)0x2000000002d8 = 0;
  *(uint16_t*)0x2000000002da = 0;
  *(uint16_t*)0x2000000002dc = 0xfff1;
  *(uint16_t*)0x2000000002de = -1;
  *(uint16_t*)0x2000000002e0 = 0;
  *(uint16_t*)0x2000000002e2 = 0;
  *(uint16_t*)0x2000000002e4 = 0xc;
  *(uint16_t*)0x2000000002e6 = 1;
  memcpy((void*)0x2000000002e8, "ingress\000", 8);
  *(uint64_t*)0x200000000248 = 0x30;
  *(uint64_t*)0x200000000218 = 1;
  *(uint64_t*)0x200000000220 = 0;
  *(uint64_t*)0x200000000228 = 0;
  *(uint32_t*)0x200000000230 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x200000000200ul, /*f=*/0ul);
  //  sendmsg$nl_route_sched arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route_sched]] {
  //      msghdr_netlink[netlink_msg_route_sched] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_route_sched]] {
  //          iovec[in, netlink_msg_route_sched] {
  //            addr: ptr[in, netlink_msg_route_sched] {
  //              union netlink_msg_route_sched {
  //                newtfilter: netlink_msg_t[const[RTM_NEWTFILTER, int16],
  //                tcmsg[AF_UNSPEC], filter_policy] {
  //                  len: len = 0x98 (4 bytes)
  //                  type: const = 0x2c (2 bytes)
  //                  flags: netlink_msg_flags = 0x601 (2 bytes)
  //                  seq: int32 = 0x0 (4 bytes)
  //                  pid: int32 = 0x0 (4 bytes)
  //                  payload: tcmsg[AF_UNSPEC] {
  //                    family: const = 0x0 (1 bytes)
  //                    tcm__pad1: const = 0x0 (1 bytes)
  //                    tcm__pad2: const = 0x0 (2 bytes)
  //                    ifindex: ifindex (resource)
  //                    tcm_handle: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xb (2 bytes)
  //                      major: tcm_handle_offsets = 0x7 (2 bytes)
  //                    }
  //                    tcm_parent: tcm_handle {
  //                      minor: tcm_handle_offsets = 0xfff1 (2 bytes)
  //                      major: tcm_handle_offsets = 0xffff (2 bytes)
  //                    }
  //                    tcm_info: tcm_handle {
  //                      minor: tcm_handle_offsets = 0x300 (2 bytes)
  //                      major: tcm_handle_offsets = 0xa (2 bytes)
  //                    }
  //                  }
  //                  attrs: array[filter_policy] {
  //                    union filter_policy {
  //                      filter_kind_options: union filter_kind_options {
  //                        f_matchall: tca_kind_options_t["matchall",
  //                        array[mall_policy]] {
  //                          TCA_KIND: nlattr_t[const[TCA_KIND, int16],
  //                          string["matchall"]] {
  //                            nla_len: offsetof = 0xd (2 bytes)
  //                            nla_type: const = 0x1 (2 bytes)
  //                            payload: buffer: {6d 61 74 63 68 61 6c 6c 00}
  //                            (length 0x9) size: buffer: {} (length 0x0) pad =
  //                            0x0 (3 bytes)
  //                          }
  //                          TCA_OPTIONS: nlattr_t[const[TCA_OPTIONS, int16],
  //                          array[mall_policy]] {
  //                            nla_len: offsetof = 0x64 (2 bytes)
  //                            nla_type: const = 0x2 (2 bytes)
  //                            payload: array[mall_policy] {
  //                              union mall_policy {
  //                                TCA_MATCHALL_ACT:
  //                                nlattr_t[const[TCA_MATCHALL_ACT, int16],
  //                                array[tca_actions]] {
  //                                  nla_len: offsetof = 0x60 (2 bytes)
  //                                  nla_type: const = 0x2 (2 bytes)
  //                                  payload: array[tca_actions] {
  //                                    union tca_actions {
  //                                      m_ct:
  //                                      nlattr_tt[int16:14[0:TCA_ACT_MAX_PRIO],
  //                                      0, 0, tcf_action_policy["ct",
  //                                      ct_policy]] {
  //                                        nla_len: offsetof = 0x5c (2 bytes)
  //                                        nla_type: int16 = 0x1 (1 bytes)
  //                                        NLA_F_NET_BYTEORDER: const = 0x0 (0
  //                                        bytes) NLA_F_NESTED: const = 0x0 (1
  //                                        bytes) payload:
  //                                        tcf_action_policy["ct", ct_policy] {
  //                                          TCA_ACT_KIND:
  //                                          nlattr_t[const[TCA_ACT_KIND,
  //                                          int16], string["ct"]] {
  //                                            nla_len: offsetof = 0x7 (2
  //                                            bytes) nla_type: const = 0x1 (2
  //                                            bytes) payload: buffer: {63 74
  //                                            00} (length 0x3) size: buffer:
  //                                            {} (length 0x0) pad = 0x0 (1
  //                                            bytes)
  //                                          }
  //                                          TCA_ACT_OPTIONS:
  //                                          nlattr_tt[const[TCA_ACT_OPTIONS,
  //                                          int16:14], 0, 1, array[ct_policy]]
  //                                          {
  //                                            nla_len: offsetof = 0x34 (2
  //                                            bytes) nla_type: const = 0x2 (1
  //                                            bytes) NLA_F_NET_BYTEORDER:
  //                                            const = 0x0 (0 bytes)
  //                                            NLA_F_NESTED: const = 0x1 (1
  //                                            bytes) payload: array[ct_policy]
  //                                            {
  //                                              union ct_policy {
  //                                                TCA_CT_PARMS:
  //                                                nlattr_t[const[TCA_CT_PARMS,
  //                                                int16], tc_gen] {
  //                                                  nla_len: offsetof = 0x18
  //                                                  (2 bytes) nla_type: const
  //                                                  = 0x1 (2 bytes) payload:
  //                                                  tc_gen {
  //                                                    index: int32 = 0x0 (4
  //                                                    bytes) capab: int32 =
  //                                                    0x8000 (4 bytes) action:
  //                                                    tc_actions = 0x3 (4
  //                                                    bytes) refcnt: int32 =
  //                                                    0x0 (4 bytes) bindcnt:
  //                                                    int32 = 0x0 (4 bytes)
  //                                                  }
  //                                                  size: buffer: {} (length
  //                                                  0x0)
  //                                                }
  //                                              }
  //                                              union ct_policy {
  //                                                TCA_CT_ACTION:
  //                                                nlattr_t[const[TCA_CT_ACTION,
  //                                                int16],
  //                                                flags[tca_ct_actions,
  //                                                int16]] {
  //                                                  nla_len: offsetof = 0x6 (2
  //                                                  bytes) nla_type: const =
  //                                                  0x3 (2 bytes) payload:
  //                                                  tca_ct_actions = 0x19 (2
  //                                                  bytes) size: buffer: {}
  //                                                  (length 0x0) pad = 0x0 (2
  //                                                  bytes)
  //                                                }
  //                                              }
  //                                              union ct_policy {
  //                                                TCA_CT_NAT_IPV4_MIN:
  //                                                nlattr_t[const[TCA_CT_NAT_IPV4_MIN,
  //                                                int16], ipv4_addr] {
  //                                                  nla_len: offsetof = 0x8 (2
  //                                                  bytes) nla_type: const =
  //                                                  0x9 (2 bytes) payload:
  //                                                  union ipv4_addr {
  //                                                    rand_addr: int32be = 0x0
  //                                                    (4 bytes)
  //                                                  }
  //                                                  size: buffer: {} (length
  //                                                  0x0)
  //                                                }
  //                                              }
  //                                              union ct_policy {
  //                                                TCA_CT_NAT_PORT_MIN:
  //                                                nlattr_t[const[TCA_CT_NAT_PORT_MIN,
  //                                                int16], sock_port] {
  //                                                  nla_len: offsetof = 0x6 (2
  //                                                  bytes) nla_type: const =
  //                                                  0xd (2 bytes) payload:
  //                                                  int16be = 0x4e20 (2 bytes)
  //                                                  size: buffer: {} (length
  //                                                  0x0) pad = 0x0 (2 bytes)
  //                                                }
  //                                              }
  //                                            }
  //                                            size: buffer: {} (length 0x0)
  //                                          }
  //                                          TCA_ACT_COOKIE:
  //                                          nlattr_t[const[TCA_ACT_COOKIE,
  //                                          int16], array[int8]] {
  //                                            nla_len: offsetof = 0x4 (2
  //                                            bytes) nla_type: const = 0x6 (2
  //                                            bytes) payload: buffer: {}
  //                                            (length 0x0) size: buffer: {}
  //                                            (length 0x0)
  //                                          }
  //                                          TCA_ACT_FLAGS:
  //                                          nlattr_t[const[TCA_ACT_FLAGS,
  //                                          int16],
  //                                          nla_bitfield32[tcf_action_policy_flags]]
  //                                          {
  //                                            nla_len: offsetof = 0xc (2
  //                                            bytes) nla_type: const = 0x7 (2
  //                                            bytes) payload:
  //                                            nla_bitfield32[tcf_action_policy_flags]
  //                                            {
  //                                              value: tcf_action_policy_flags
  //                                              = 0x0 (4 bytes) selector:
  //                                              tcf_action_policy_flags = 0x0
  //                                              (4 bytes)
  //                                            }
  //                                            size: buffer: {} (length 0x0)
  //                                          }
  //                                          TCA_ACT_HW_STATS:
  //                                          nlattr_t[const[TCA_ACT_HW_STATS,
  //                                          int16],
  //                                          nla_bitfield32[tcf_action_policy_hw_stats]]
  //                                          {
  //                                            nla_len: offsetof = 0xc (2
  //                                            bytes) nla_type: const = 0x8 (2
  //                                            bytes) payload:
  //                                            nla_bitfield32[tcf_action_policy_hw_stats]
  //                                            {
  //                                              value:
  //                                              tcf_action_policy_hw_stats =
  //                                              0x0 (4 bytes) selector:
  //                                              tcf_action_policy_hw_stats =
  //                                              0x3 (4 bytes)
  //                                            }
  //                                            size: buffer: {} (length 0x0)
  //                                          }
  //                                        }
  //                                        size: buffer: {} (length 0x0)
  //                                      }
  //                                    }
  //                                  }
  //                                  size: buffer: {} (length 0x0)
  //                                }
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x98 (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*)0x200000000300 = 0;
  *(uint32_t*)0x200000000308 = 0;
  *(uint64_t*)0x200000000310 = 0x200000002500;
  *(uint64_t*)0x200000002500 = 0x200000002540;
  *(uint32_t*)0x200000002540 = 0x98;
  *(uint16_t*)0x200000002544 = 0x2c;
  *(uint16_t*)0x200000002546 = 0x601;
  *(uint32_t*)0x200000002548 = 0;
  *(uint32_t*)0x20000000254c = 0;
  *(uint8_t*)0x200000002550 = 0;
  *(uint8_t*)0x200000002551 = 0;
  *(uint16_t*)0x200000002552 = 0;
  *(uint32_t*)0x200000002554 = r[4];
  *(uint16_t*)0x200000002558 = 0xb;
  *(uint16_t*)0x20000000255a = 7;
  *(uint16_t*)0x20000000255c = 0xfff1;
  *(uint16_t*)0x20000000255e = -1;
  *(uint16_t*)0x200000002560 = 0x300;
  *(uint16_t*)0x200000002562 = 0xa;
  *(uint16_t*)0x200000002564 = 0xd;
  *(uint16_t*)0x200000002566 = 1;
  memcpy((void*)0x200000002568, "matchall\000", 9);
  *(uint16_t*)0x200000002574 = 0x64;
  *(uint16_t*)0x200000002576 = 2;
  *(uint16_t*)0x200000002578 = 0x60;
  *(uint16_t*)0x20000000257a = 2;
  *(uint16_t*)0x20000000257c = 0x5c;
  STORE_BY_BITMASK(uint16_t, , 0x20000000257e, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000000257f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000000257f, 0, 7, 1);
  *(uint16_t*)0x200000002580 = 7;
  *(uint16_t*)0x200000002582 = 1;
  memcpy((void*)0x200000002584, "ct\000", 3);
  *(uint16_t*)0x200000002588 = 0x34;
  STORE_BY_BITMASK(uint16_t, , 0x20000000258a, 2, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000000258b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000000258b, 1, 7, 1);
  *(uint16_t*)0x20000000258c = 0x18;
  *(uint16_t*)0x20000000258e = 1;
  *(uint32_t*)0x200000002590 = 0;
  *(uint32_t*)0x200000002594 = 0x8000;
  *(uint32_t*)0x200000002598 = 3;
  *(uint32_t*)0x20000000259c = 0;
  *(uint32_t*)0x2000000025a0 = 0;
  *(uint16_t*)0x2000000025a4 = 6;
  *(uint16_t*)0x2000000025a6 = 3;
  *(uint16_t*)0x2000000025a8 = 0x19;
  *(uint16_t*)0x2000000025ac = 8;
  *(uint16_t*)0x2000000025ae = 9;
  *(uint32_t*)0x2000000025b0 = htobe32(0);
  *(uint16_t*)0x2000000025b4 = 6;
  *(uint16_t*)0x2000000025b6 = 0xd;
  *(uint16_t*)0x2000000025b8 = htobe16(0x4e20);
  *(uint16_t*)0x2000000025bc = 4;
  *(uint16_t*)0x2000000025be = 6;
  *(uint16_t*)0x2000000025c0 = 0xc;
  *(uint16_t*)0x2000000025c2 = 7;
  *(uint32_t*)0x2000000025c4 = 0;
  *(uint32_t*)0x2000000025c8 = 0;
  *(uint16_t*)0x2000000025cc = 0xc;
  *(uint16_t*)0x2000000025ce = 8;
  *(uint32_t*)0x2000000025d0 = 0;
  *(uint32_t*)0x2000000025d4 = 3;
  *(uint64_t*)0x200000002508 = 0x98;
  *(uint64_t*)0x200000000318 = 1;
  *(uint64_t*)0x200000000320 = 0;
  *(uint64_t*)0x200000000328 = 0;
  *(uint32_t*)0x200000000330 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x200000000300ul, /*f=*/0ul);
  //  write$tun arguments: [
  //    fd: fd_tun (resource)
  //    buf: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {03 48 86 dd 01 00 00 00 00 00 14 00 00 00 60 00
  //          00 00 03 08 2f} (length 0x15)
  //        }
  //      }
  //    }
  //    count: len = 0xfdef (8 bytes)
  //  ]
  memcpy((void*)0x200000002600,
         "\x03\x48\x86\xdd\x01\x00\x00\x00\x00\x00\x14\x00\x00\x00\x60\x00\x00"
         "\x00\x03\x08\x2f",
         21);
  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x200000002600ul,
          /*count=*/0xfdeful);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*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=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}