// https://syzkaller.appspot.com/bug?id=831f152323da24cc589eca53a35768e036918847
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.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>

#include <linux/futex.h>

static unsigned long long procid;

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 void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

#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))))

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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");
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 10; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  socket$nl_netfilter arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0xc (4 bytes)
    //  ]
    //  returns sock_nl_netfilter
    res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0xc);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    //  close arguments: [
    //    fd: fd (resource)
    //  ]
    syscall(__NR_close, /*fd=*/r[0]);
    break;
  case 2:
    //  socket$nl_netfilter arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0xc (4 bytes)
    //  ]
    //  returns sock_nl_netfilter
    res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0xc);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    //  recvmsg$unix arguments: [
    //    fd: sock_unix (resource)
    //    msg: nil
    //    f: recv_flags = 0x20 (8 bytes)
    //  ]
    syscall(__NR_recvmsg, /*fd=*/(intptr_t)-1, /*msg=*/0ul,
            /*f=MSG_TRUNC*/ 0x20ul, 0);
    break;
  case 4:
    //  sendmmsg arguments: [
    //    fd: sock (resource)
    //    mmsg: nil
    //    vlen: len = 0x0 (8 bytes)
    //    f: send_flags = 0x9200000000000000 (8 bytes)
    //  ]
    syscall(__NR_sendmmsg, /*fd=*/(intptr_t)-1, /*mmsg=*/0ul, /*vlen=*/0ul,
            /*f=*/0x9200000000000000ul);
    break;
  case 5:
    //  sendmsg$NFT_BATCH arguments: [
    //    fd: sock_nl_netfilter (resource)
    //    msg: ptr[in, msghdr_netlink[nft_batch_msg]] {
    //      msghdr_netlink[nft_batch_msg] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, nft_batch_msg]] {
    //          iovec[in, nft_batch_msg] {
    //            addr: ptr[inout, array[ANYUNION]] {
    //              array[ANYUNION] {
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {14 00 00 00 10 00 01 00 00 00 00 00 00
    //                  00 00 00 05 00 00 0a 28 00 00 00 00 0a 03 00 00 00 00 00
    //                  00 00 00 00 0a 00 00 07 08 00 02 40 00 00 00 02 09 00 01
    //                  00 73 79 7a 31 00 00 00 00 2c 00 00 00 03 0a 01 01 00 00
    //                  00 00 00 00 00 00 0a 00 00 07 09 00 01 00 73 79 7a 31 00
    //                  00 00 00 09 00 03 00 73 79 7a 32 00 00 00 00 14 00 00 00
    //                  11 00 01} (length 0x6f)
    //                }
    //              }
    //            }
    //            len: len = 0x7c (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x4000 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x2000000000c0 = 0;
    *(uint32_t*)0x2000000000c8 = 0;
    *(uint64_t*)0x2000000000d0 = 0x200000000080;
    *(uint64_t*)0x200000000080 = 0x200000000240;
    memcpy((void*)0x200000000240,
           "\x14\x00\x00\x00\x10\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x05\x00\x00\x0a\x28\x00\x00\x00\x00\x0a\x03\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x0a\x00\x00\x07\x08\x00\x02\x40\x00\x00\x00\x02"
           "\x09\x00\x01\x00\x73\x79\x7a\x31\x00\x00\x00\x00\x2c\x00\x00\x00"
           "\x03\x0a\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x00\x07"
           "\x09\x00\x01\x00\x73\x79\x7a\x31\x00\x00\x00\x00\x09\x00\x03\x00"
           "\x73\x79\x7a\x32\x00\x00\x00\x00\x14\x00\x00\x00\x11\x00\x01",
           111);
    *(uint64_t*)0x200000000088 = 0x7c;
    *(uint64_t*)0x2000000000d8 = 1;
    *(uint64_t*)0x2000000000e0 = 0;
    *(uint64_t*)0x2000000000e8 = 0;
    *(uint32_t*)0x2000000000f0 = 0x4000;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x2000000000c0ul, /*f=*/0ul);
    break;
  case 6:
    //  sendmsg$NFT_BATCH arguments: [
    //    fd: sock_nl_netfilter (resource)
    //    msg: ptr[in, msghdr_netlink[nft_batch_msg]] {
    //      msghdr_netlink[nft_batch_msg] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, nft_batch_msg]] {
    //          iovec[in, nft_batch_msg] {
    //            addr: ptr[inout, array[ANYUNION]] {
    //              array[ANYUNION] {
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {14 00 00 00 10 00 01 00 f7 00 00 00 00
    //                  00 00 00 05 00 00 0a 44 00 00 00 09 0a 01 04 00 00 00 00
    //                  00 00 00 00 0a 00 00 04 09 00 01 00 73 79 7a 31 00 00 00
    //                  00 08 00 05 40 00 00 00 02 09 00 02 00 73 79 7a 31 00 00
    //                  00 00 08 00 0a 40 ff ff ff fc 08 00 03 40 00 00 00 14 4c
    //                  00 00 00 0c 0a 01 01 00 00 00 00 00 00 00 00 0a 00 00 06
    //                  09 00 02 00 73 79 7a 31 00 00 00 00 09 00 01 00 73 79 7a
    //                  31 00 00 00 00 20 00 03 80 1c 00 00 80 0c 00 01 80 06 00
    //                  01 00 d1 03 00 00 0c 00 04 40 00 00 00 00 00 00 00 01 14
    //                  00 00 00 11 00 01 0b} (length 0xac)
    //                }
    //              }
    //            }
    //            len: len = 0xb8 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x4000850 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x4040 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000000 = 0;
    *(uint32_t*)0x200000000008 = 0;
    *(uint64_t*)0x200000000010 = 0x200000009b00;
    *(uint64_t*)0x200000009b00 = 0x200000000100;
    memcpy((void*)0x200000000100,
           "\x14\x00\x00\x00\x10\x00\x01\x00\xf7\x00\x00\x00\x00\x00\x00\x00"
           "\x05\x00\x00\x0a\x44\x00\x00\x00\x09\x0a\x01\x04\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x0a\x00\x00\x04\x09\x00\x01\x00\x73\x79\x7a\x31"
           "\x00\x00\x00\x00\x08\x00\x05\x40\x00\x00\x00\x02\x09\x00\x02\x00"
           "\x73\x79\x7a\x31\x00\x00\x00\x00\x08\x00\x0a\x40\xff\xff\xff\xfc"
           "\x08\x00\x03\x40\x00\x00\x00\x14\x4c\x00\x00\x00\x0c\x0a\x01\x01"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x00\x06\x09\x00\x02\x00"
           "\x73\x79\x7a\x31\x00\x00\x00\x00\x09\x00\x01\x00\x73\x79\x7a\x31"
           "\x00\x00\x00\x00\x20\x00\x03\x80\x1c\x00\x00\x80\x0c\x00\x01\x80"
           "\x06\x00\x01\x00\xd1\x03\x00\x00\x0c\x00\x04\x40\x00\x00\x00\x00"
           "\x00\x00\x00\x01\x14\x00\x00\x00\x11\x00\x01\x0b",
           172);
    *(uint64_t*)0x200000009b08 = 0xb8;
    *(uint64_t*)0x200000000018 = 1;
    *(uint64_t*)0x200000000020 = 0;
    *(uint64_t*)0x200000000028 = 0;
    *(uint32_t*)0x200000000030 = 0x4000850;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000000ul,
            /*f=MSG_NOSIGNAL|MSG_DONTWAIT*/ 0x4040ul);
    break;
  case 7:
    //  sendmsg$NFT_BATCH arguments: [
    //    fd: sock_nl_netfilter (resource)
    //    msg: ptr[in, msghdr_netlink[nft_batch_msg]] {
    //      msghdr_netlink[nft_batch_msg] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, nft_batch_msg]] {
    //          iovec[in, nft_batch_msg] {
    //            addr: ptr[inout, array[ANYUNION]] {
    //              array[ANYUNION] {
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {14 00 00 00 10 00 01 00 00 00 00 00 00
    //                  00 00 00 05 00 00 0a 48 00 00 00 0c 0a 01 01 00 00 00 00
    //                  00 00 00 00 0a 00 00 06 09 00 02 00 73 79 7a 31 00 00 00
    //                  00 09 00 01 00 73 79 7a 31 00 00 00 00 1c 00 03 80 18 00
    //                  00 80 0c 00 01 80 06 00 01} (length 0x4f)
    //                }
    //              }
    //            }
    //            len: len = 0x70 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x4451099e661a63b1 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x200000009b40 = 0;
    *(uint32_t*)0x200000009b48 = 0;
    *(uint64_t*)0x200000009b50 = 0x200000009b00;
    *(uint64_t*)0x200000009b00 = 0x2000000001c0;
    memcpy((void*)0x2000000001c0,
           "\x14\x00\x00\x00\x10\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x05\x00\x00\x0a\x48\x00\x00\x00\x0c\x0a\x01\x01\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x0a\x00\x00\x06\x09\x00\x02\x00\x73\x79\x7a\x31"
           "\x00\x00\x00\x00\x09\x00\x01\x00\x73\x79\x7a\x31\x00\x00\x00\x00"
           "\x1c\x00\x03\x80\x18\x00\x00\x80\x0c\x00\x01\x80\x06\x00\x01",
           79);
    *(uint64_t*)0x200000009b08 = 0x70;
    *(uint64_t*)0x200000009b58 = 1;
    *(uint64_t*)0x200000009b60 = 0;
    *(uint64_t*)0x200000009b68 = 0;
    *(uint32_t*)0x200000009b70 = 0x661a63b1;
    syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000009b40ul, /*f=*/0ul);
    break;
  case 8:
    //  socket$nl_netfilter arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0xc (4 bytes)
    //  ]
    //  returns sock_nl_netfilter
    res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0xc);
    if (res != -1)
      r[2] = res;
    break;
  case 9:
    //  sendmsg$NFT_MSG_GETSETELEM arguments: [
    //    fd: sock_nl_netfilter (resource)
    //    msg: ptr[in,
    //    msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_NFTABLES,
    //    NFT_MSG_GETSETELEM, nft_set_elem_list_policy]]] {
    //      msghdr_netlink[netlink_msg_netfilter_t[NFNL_SUBSYS_NFTABLES,
    //      NFT_MSG_GETSETELEM, nft_set_elem_list_policy]] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in,
    //        netlink_msg_netfilter_t[NFNL_SUBSYS_NFTABLES, NFT_MSG_GETSETELEM,
    //        nft_set_elem_list_policy]]] {
    //          iovec[in, netlink_msg_netfilter_t[NFNL_SUBSYS_NFTABLES,
    //          NFT_MSG_GETSETELEM, nft_set_elem_list_policy]] {
    //            addr: ptr[in, netlink_msg_netfilter_tt[NFNL_SUBSYS_NFTABLES,
    //            NFT_MSG_GETSETELEM, array[nft_set_elem_list_policy]]] {
    //              netlink_msg_netfilter_tt[NFNL_SUBSYS_NFTABLES,
    //              NFT_MSG_GETSETELEM, array[nft_set_elem_list_policy]] {
    //                len: len = 0x40 (4 bytes)
    //                type: const = 0xd (1 bytes)
    //                subsys: const = 0xa (1 bytes)
    //                flags: netlink_netfilter_msg_flags = 0x801 (2 bytes)
    //                seq: const = 0x0 (4 bytes)
    //                pid: const = 0x0 (4 bytes)
    //                hdr: nfgenmsg {
    //                  nfgen_family: nfproto = 0xa (1 bytes)
    //                  version: const = 0x0 (1 bytes)
    //                  res_id: int16be = 0x1 (2 bytes)
    //                }
    //                attrs: array[nft_set_elem_list_policy] {
    //                  union nft_set_elem_list_policy {
    //                    NFTA_SET_ELEM_LIST_SET:
    //                    nlattr_t[const[NFTA_SET_ELEM_LIST_SET, int16],
    //                    string[nft_set_elem_list_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)
    //                    }
    //                  }
    //                  union nft_set_elem_list_policy {
    //                    NFTA_SET_ELEM_LIST_TABLE:
    //                    nlattr_t[const[NFTA_SET_ELEM_LIST_TABLE, int16],
    //                    string[nft_table_name]] {
    //                      nla_len: offsetof = 0x9 (2 bytes)
    //                      nla_type: const = 0x1 (2 bytes)
    //                      payload: buffer: {73 79 7a 31 00} (length 0x5)
    //                      size: buffer: {} (length 0x0)
    //                      pad = 0x0 (3 bytes)
    //                    }
    //                  }
    //                  union nft_set_elem_list_policy {
    //                    NFTA_SET_ELEM_LIST_ELEMENTS:
    //                    nlattr_tt[const[NFTA_SET_ELEM_LIST_ELEMENTS,
    //                    int16:14], 0, 1, array[nlnest[0,
    //                    array[nft_set_elem_policy]]]] {
    //                      nla_len: offsetof = 0x14 (2 bytes)
    //                      nla_type: const = 0x3 (1 bytes)
    //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                      NLA_F_NESTED: const = 0x1 (1 bytes)
    //                      payload: array[nlattr_tt[const[0, int16:14], 0, 1,
    //                      array[nft_set_elem_policy]]] {
    //                        nlattr_tt[const[0, int16:14], 0, 1,
    //                        array[nft_set_elem_policy]] {
    //                          nla_len: offsetof = 0x10 (2 bytes)
    //                          nla_type: const = 0x0 (1 bytes)
    //                          NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                          NLA_F_NESTED: const = 0x1 (1 bytes)
    //                          payload: array[nft_set_elem_policy] {
    //                            union nft_set_elem_policy {
    //                              NFTA_SET_ELEM_KEY:
    //                              nlattr_tt[const[NFTA_SET_ELEM_KEY,
    //                              int16:14], 0, 1, array[nft_data_policy]] {
    //                                nla_len: offsetof = 0xc (2 bytes)
    //                                nla_type: const = 0x1 (1 bytes)
    //                                NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                                NLA_F_NESTED: const = 0x1 (1 bytes)
    //                                payload: array[nft_data_policy] {
    //                                  union nft_data_policy {
    //                                    NFTA_DATA_VALUE:
    //                                    nlattr_t[const[NFTA_DATA_VALUE,
    //                                    int16], array[int8]] {
    //                                      nla_len: offsetof = 0x6 (2 bytes)
    //                                      nla_type: const = 0x1 (2 bytes)
    //                                      payload: buffer: {ff d7} (length
    //                                      0x2) size: buffer: {} (length 0x0)
    //                                    }
    //                                  }
    //                                }
    //                                size: buffer: {} (length 0x0)
    //                              }
    //                            }
    //                          }
    //                          size: buffer: {} (length 0x0)
    //                        }
    //                      }
    //                      size: buffer: {} (length 0x0)
    //                    }
    //                  }
    //                }
    //              }
    //            }
    //            len: len = 0x40 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x4000805 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x8000 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000100 = 0;
    *(uint32_t*)0x200000000108 = 0;
    *(uint64_t*)0x200000000110 = 0x200000000040;
    *(uint64_t*)0x200000000040 = 0x200000000880;
    *(uint32_t*)0x200000000880 = 0x40;
    *(uint8_t*)0x200000000884 = 0xd;
    *(uint8_t*)0x200000000885 = 0xa;
    *(uint16_t*)0x200000000886 = 0x801;
    *(uint32_t*)0x200000000888 = 0;
    *(uint32_t*)0x20000000088c = 0;
    *(uint8_t*)0x200000000890 = 0xa;
    *(uint8_t*)0x200000000891 = 0;
    *(uint16_t*)0x200000000892 = htobe16(1);
    *(uint16_t*)0x200000000894 = 9;
    *(uint16_t*)0x200000000896 = 2;
    memcpy((void*)0x200000000898, "syz1\000", 5);
    *(uint16_t*)0x2000000008a0 = 9;
    *(uint16_t*)0x2000000008a2 = 1;
    memcpy((void*)0x2000000008a4, "syz1\000", 5);
    *(uint16_t*)0x2000000008ac = 0x14;
    STORE_BY_BITMASK(uint16_t, , 0x2000000008ae, 3, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008af, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008af, 1, 7, 1);
    *(uint16_t*)0x2000000008b0 = 0x10;
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b2, 0, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b3, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b3, 1, 7, 1);
    *(uint16_t*)0x2000000008b4 = 0xc;
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b6, 1, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b7, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x2000000008b7, 1, 7, 1);
    *(uint16_t*)0x2000000008b8 = 6;
    *(uint16_t*)0x2000000008ba = 1;
    memcpy((void*)0x2000000008bc, "\xff\xd7", 2);
    *(uint64_t*)0x200000000048 = 0x40;
    *(uint64_t*)0x200000000118 = 1;
    *(uint64_t*)0x200000000120 = 0;
    *(uint64_t*)0x200000000128 = 0;
    *(uint32_t*)0x200000000130 = 0x4000805;
    syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x200000000100ul,
            /*f=MSG_MORE*/ 0x8000ul);
    break;
  }
}
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;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}