// https://syzkaller.appspot.com/bug?id=bd3860e571a12c18739719a7aff638acc9fe4072
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

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

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

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

__attribute__((noreturn)) static void fail(const char* msg, ...)
{
  int e = errno;
  fflush(stdout);
  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);
}

__attribute__((noreturn)) static void exitf(const char* msg, ...)
{
  int e = errno;
  fflush(stdout);
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit(kRetryStatus);
}

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[32];
void test()
{
  memset(r, -1, sizeof(r));
  r[0] = syscall(__NR_mlock, 0x20001000ul, 0x3000ul);
  *(uint32_t*)0x2001d000 = (uint32_t)0x2;
  *(uint32_t*)0x2001d004 = (uint32_t)0x78;
  *(uint8_t*)0x2001d008 = (uint8_t)0xd4e9;
  *(uint8_t*)0x2001d009 = (uint8_t)0x0;
  *(uint8_t*)0x2001d00a = (uint8_t)0x0;
  *(uint8_t*)0x2001d00b = (uint8_t)0x0;
  *(uint32_t*)0x2001d00c = (uint32_t)0x0;
  *(uint64_t*)0x2001d010 = (uint64_t)0x0;
  *(uint64_t*)0x2001d018 = (uint64_t)0x0;
  *(uint64_t*)0x2001d020 = (uint64_t)0x0;
  *(uint8_t*)0x2001d028 = (uint8_t)0xfc;
  *(uint8_t*)0x2001d029 = (uint8_t)0x0;
  *(uint8_t*)0x2001d02a = (uint8_t)0x0;
  *(uint8_t*)0x2001d02b = (uint8_t)0x0;
  *(uint32_t*)0x2001d02c = (uint32_t)0x0;
  *(uint32_t*)0x2001d030 = (uint32_t)0x0;
  *(uint32_t*)0x2001d034 = (uint32_t)0x2;
  *(uint64_t*)0x2001d038 = (uint64_t)0x0;
  *(uint64_t*)0x2001d040 = (uint64_t)0x0;
  *(uint64_t*)0x2001d048 = (uint64_t)0x0;
  *(uint64_t*)0x2001d050 = (uint64_t)0x0;
  *(uint64_t*)0x2001d058 = (uint64_t)0x0;
  *(uint32_t*)0x2001d060 = (uint32_t)0x0;
  *(uint64_t*)0x2001d068 = (uint64_t)0x0;
  *(uint32_t*)0x2001d070 = (uint32_t)0x0;
  *(uint16_t*)0x2001d074 = (uint16_t)0x0;
  *(uint16_t*)0x2001d076 = (uint16_t)0x0;
  r[28] = syscall(__NR_perf_event_open, 0x2001d000ul, 0x0ul,
                  0xfffffffffffffffful, 0xfffffffffffffffful, 0x0ul);
  r[29] = syscall(__NR_ftruncate, 0xfffffffffffffffful, 0x7ffful);
  *(uint64_t*)0x20001000 = (uint64_t)0x0;
  r[31] = syscall(__NR_sendfile, 0xfffffffffffffffful,
                  0xfffffffffffffffful, 0x20001000ul, 0xfecul);
}

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