// https://syzkaller.appspot.com/bug?id=90a4811c99d6a2df7b252971b754612ca632894d
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

static unsigned long long procid;

static void kill_and_wait(int pid, int* status)
{
  kill(pid, SIGKILL);
  while (waitpid(-1, status, 0) != pid) {
  }
}

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 __syscall syscall

static void execute_one(void);

#define WAIT_FLAGS 0

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

uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20000040, "./file0\000", 8);
  res = syscall(SYS_open, 0x20000040ul, 0x60eul, 0ul);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20000080 = 0x20000180;
  memcpy((void*)0x20000180, "\xfd\xff\xff\xff\xff\xff\xff\xff", 8);
  *(uint64_t*)0x20000088 = 8;
  syscall(SYS_pwritev, r[0], 0x20000080ul, 1ul, 0ul);
  *(uint64_t*)0x20000140 = 0x200000c0;
  memcpy((void*)0x200000c0, "\x44\x02", 2);
  *(uint64_t*)0x20000148 = 2;
  syscall(SYS_pwritev, r[0], 0x20000140ul, 1ul, 0ul);
  syscall(SYS_mmap, 0x20000000ul, 0x13000ul, 5ul, 0x10ul, r[0], 0ul);
  res = syscall(SYS_socket, 2ul, 3ul, 0);
  if (res != -1)
    r[1] = res;
  res = syscall(SYS_socket, 2ul, 2ul, 0);
  if (res != -1)
    r[2] = res;
  syscall(SYS_dup2, r[1], r[2]);
  syscall(SYS_connect, r[2], 0x20000000ul, 0x10ul);
  res = syscall(SYS_socket, 2ul, 0x4003ul, 0);
  if (res != -1)
    r[3] = res;
  syscall(SYS_setsockopt, -1, 0, 0x14, 0ul, 0ul);
  syscall(SYS_connect, r[3], 0ul, 0x10ul);
  syscall(SYS_write, r[1], 0ul, 0ul);
  res = syscall(SYS_openat, 0xffffffffffffff9cul, 0ul, 0x4000000001ul, 0ul);
  if (res != -1)
    r[4] = res;
  syscall(SYS_ioctl, r[4], 0x8020426cul, 0ul);
  syscall(SYS_setsockopt, -1, 0, 0x14, 0x20000080ul, 0ul);
  memcpy((void*)0x200000c0, "tap", 3);
  *(uint8_t*)0x200000c3 = 0x30 + procid * 1;
  *(uint8_t*)0x200000c4 = 0;
  syscall(SYS_ioctl, r[4], 0x8020426cul, 0x200000c0ul);
  syscall(SYS_setsockopt, -1, 0, 0x14, 0ul, 0ul);
  syscall(SYS_dup2, -1, -1);
}
int main(void)
{
  syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul);
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}