// https://syzkaller.appspot.com/bug?id=edc4bdcf9437492a8287e70f7c3c4231511fe690
// 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>

#ifndef SYS_compat_50_mknod
#define SYS_compat_50_mknod 14
#endif
#ifndef SYS_dup2
#define SYS_dup2 90
#endif
#ifndef SYS_mmap
#define SYS_mmap 197
#endif
#ifndef SYS_open
#define SYS_open 5
#endif
#ifndef SYS_writev
#define SYS_writev 121
#endif

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;
}

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[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20000000, "./file0\000", 8);
  syscall(SYS_compat_50_mknod, 0x20000000ul, 0x2001ul, 0x400);
  memcpy((void*)0x20000000, "./file0\000", 8);
  res = syscall(SYS_open, 0x20000000ul, 2ul, 0ul);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000000, "./file0\000", 8);
  res = syscall(SYS_open, 0x20000000ul, 0ul, 0ul);
  if (res != -1)
    r[1] = res;
  syscall(SYS_dup2, r[0], r[1]);
  *(uint64_t*)0x20000640 = 0x20000040;
  memcpy(
      (void*)0x20000040,
      "\x23\xb2\xcc\x55\x6c\x49\x00\xd4\x66\x19\x79\x4d\x28\x9c\xb0\x73\xe2\x3e"
      "\x0e\x5d\x74\x86\xd3\x1a\xc0\x2b\x98\xd5\xd5\xab\x4c\xa3\xcc\x7e\x3d\xb4"
      "\x43\x92\xce\x4d\x39\x8c\xe0\xe4\x4b\xd6\xd5\x12\xe6\x6f\xe1\x8a\x7a\x44"
      "\xdb\x1f\x18\x2d\x57\xf0\x6a\x2e\x21\xb3\x67\xe8\xf9\xbd\xd5\xc4\x33\xfe"
      "\xac\xcf\x6e\xe1\xa3\x99\x41\xde\x78\x4c\x13\x7e\x8a\xdf\x50\x59\xa9\xf8"
      "\xd5\xb1\x86\xe9\xa7\x17\x22\x9f\x14\x7a\x57\xec\x95\x63\xf6\x7e\x13\x0c"
      "\x1b\x92\x0b\xe1\xc7\xb2\x88\x72\x7d\x54\x7a\x08\xe2\x00\xc7\x47\xd1\x3e"
      "\xb7\xee\x17\xf5\x21\xd5\x1d\x2e\x6b\xc9\xdb\x62\x6c\xcf\x22\xf0",
      142);
  *(uint64_t*)0x20000648 = 0x8e;
  *(uint64_t*)0x20000650 = 0x20000100;
  memcpy(
      (void*)0x20000100,
      "\x4a\x08\x79\x80\x75\x5d\xd2\x5b\x6a\x26\xe1\x24\x97\x40\xc2\x15\x5f\x9c"
      "\x29\xfe\xce\x5d\x22\x6d\x00\xf7\xd7\x67\xdd\x41\x25\xd1\x82\x9c\xba\xeb"
      "\x8f\xcc\x64\xb0\x4b\x5c\x1e\x5b\xf8\x0d\x61\x7b\xd8\xfc\x93\x3a\x1b\x3c"
      "\x3b\x72\x80\xa1\x8c\x60\x2d\x9d\x0a\x64\x8f\x28\xce\x00\xee\x83\x66\x6e"
      "\x5d\x16\x74\x82\x3d\x02\x72\xa3\x03\x9b\x7b\x1f\xaf\x6e\x75\x57\x98\x77"
      "\xae\x41\x35\x1d\x9f\x07\xba\x4b\xa6\x30\xaf\x01\x24\x75\x53\xf2\x59\xc3"
      "\x04\x0f\x0b\xa8\x6f\x0d\x99\x6d\x4a\x0d\xc6\x41\xa7\x07\xa3\x34\x06\x80"
      "\x45\x9e\x38\xf2\xef\x93\x84\x9f\x9c\x48\xb1\x4d\xa2\xb7\x80\x50\x7a\xf9"
      "\xbb\x20\x1c\x59\x02\xad\xa5\x93\x0c\xc6\xb5\x3d\x81\x8b\x82\x33\x5f\xb8"
      "\xc6\xe1\x03\x10\xa3\x41\x32\xcc\x9c\xa8\xac\x0a\xe5\x98\x06\x55\x6a\x57"
      "\x92\x86\xbf\x46\x4f\xcf\x5a\xd5\x35\x60\x19\xdb\x75\xbd\x19\x51\x2c\xc6"
      "\xba\xbc\xed\x85\x70\xa7\x37\x41\xd7\x3c\xca\xc8",
      210);
  *(uint64_t*)0x20000658 = 0xd2;
  *(uint64_t*)0x20000660 = 0;
  *(uint64_t*)0x20000668 = 0;
  *(uint64_t*)0x20000670 = 0;
  *(uint64_t*)0x20000678 = 0;
  *(uint64_t*)0x20000680 = 0;
  *(uint64_t*)0x20000688 = 0;
  *(uint64_t*)0x20000690 = 0;
  *(uint64_t*)0x20000698 = 0;
  *(uint64_t*)0x200006a0 = 0;
  *(uint64_t*)0x200006a8 = 0;
  syscall(SYS_writev, r[1], 0x20000640ul, 7ul);
}
int main(void)
{
  syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}