// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/prctl.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}

#include <stdint.h>
#include <string.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void test();

void loop()
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      test();
      doexit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid)
        break;
      usleep(1000);
      if (current_time_ms() - start > 5 * 1000) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
  }
}

long r[11];
void* thr(void* arg)
{
  switch ((long)arg) {
  case 0:
    r[0] = syscall(__NR_mmap, 0x20001000ul, 0xffe000ul, 0x3ul, 0x32ul,
                   0xfffffffffffffffful, 0x0ul);
    break;
  case 1:
    memcpy((void*)0x20a7dff7, "\x2f\x64\x65\x76\x2f\x6b\x76\x6d\x00",
           9);
    r[2] = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20a7dff7ul,
                   0xa00ul, 0x0ul);
    break;
  case 2:
    r[3] = syscall(__NR_ioctl, r[2], 0xae01ul, 0x0ul);
    break;
  case 3:
    r[4] = syscall(__NR_socket, 0x1bul, 0x3ul, 0x8ul);
    break;
  case 4:
    r[5] = syscall(__NR_ioctl, r[3], 0xae60ul);
    break;
  case 5:
    r[6] = syscall(__NR_ioctl, r[3], 0xae41ul, 0x2ul);
    break;
  case 6:
    r[7] = syscall(__NR_close, r[3]);
    break;
  case 7:
    r[8] = syscall(__NR_ioctl, r[2], 0x2ul, 0x20a84000ul);
    break;
  case 8:
    r[9] = syscall(__NR_dup3, r[2], r[6], 0x0ul);
    break;
  case 9:
    r[10] = syscall(__NR_close, 0xfffffffffffffffful);
    break;
  }
  return 0;
}

void test()
{
  long i;
  pthread_t th[20];

  memset(r, -1, sizeof(r));
  for (i = 0; i < 10; i++) {
    pthread_create(&th[i], 0, thr, (void*)i);
    usleep(rand() % 10000);
  }
  usleep(rand() % 100000);
}

int main()
{
  int i;
  for (i = 0; i < 8; i++) {
    if (fork() == 0) {
      loop();
      return 0;
    }
  }
  sleep(1000000);
  return 0;
}