// https://syzkaller.appspot.com/bug?id=ff2f0f5e5bf0055ac719ff67881197ba8ba50b7a
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

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;
}

static void execute_one();
const char* program_name;

void child()
{
  execute_one();
  exit(0);
}

static void execute_one(void);

#define WAIT_FLAGS 0

static void loop(void)
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      execl(program_name, program_name, "child", NULL);
      exit(1);
    }
    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 < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

void execute_one(void)
{
  *(uint32_t*)0x200002c0 = 0xffffff9c;
  *(uint32_t*)0x200002c4 = 2;
  *(uint32_t*)0x200002c8 = 0x200;
  *(uint32_t*)0x200002cc = 3;
  *(uint64_t*)0x200002d0 = 0;
  *(uint64_t*)0x200002d8 = 0;
  *(uint32_t*)0x200002e0 = -1;
  *(uint32_t*)0x200002e4 = 1;
  *(uint32_t*)0x200002e8 = 1;
  *(uint32_t*)0x200002ec = 6;
  *(uint64_t*)0x200002f0 = 0;
  *(uint64_t*)0x200002f8 = 0;
  syscall(SYS_tap_fds, 0x200002c0, 2);
}

int main(int argc, char** argv)
{
  syscall(SYS_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  program_name = argv[0];
  if (argc == 2 && strcmp(argv[1], "child") == 0)
    child();
  loop();
  return 0;
}