// https://syzkaller.appspot.com/bug?id=d767177245c54af614d5241159cce56995eef0db
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <pthread.h>
#include <stdlib.h>
#include <sys/syscall.h>
#include <unistd.h>

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

#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.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 void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static void test();

void loop()
{
  while (1) {
    test();
  }
}

long r[29];
void* thr(void* arg)
{
  switch ((long)arg) {
  case 0:
    r[0] = syscall(__NR_mmap, 0x20000000ul, 0x59e000ul, 0x3ul, 0x32ul,
                   0xfffffffffffffffful, 0x0ul);
    break;
  case 1:
    r[1] = syscall(__NR_socket, 0x26ul, 0x5ul, 0x0ul);
    break;
  case 2:
    *(uint16_t*)0x20000000 = (uint16_t)0x26;
    memcpy((void*)0x20000002,
           "\x73\x6b\x63\x69\x70\x68\x65\x72\x00\x00\x00\x00\x00\x00",
           14);
    *(uint32_t*)0x20000010 = (uint32_t)0x0;
    *(uint32_t*)0x20000014 = (uint32_t)0x0;
    memcpy((void*)0x20000018,
           "\x63\x68\x61\x63\x68\x61\x32\x30\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
           "\x00\x00\x00\x00\x00\x00\x00\x00",
           64);
    r[7] = syscall(__NR_bind, r[1], 0x20000000ul, 0x58ul);
    break;
  case 3:
    r[8] = syscall(__NR_accept, r[1], 0x0ul, 0x0ul);
    break;
  case 4:
    memcpy((void*)0x2007ff6f, "\x9f\xa0\x29\x1e\x41\x79\x7c\x3d\x71\x85"
                              "\x4a\x9f\xe2\xcd\x85\x86\x74\xc8\x29\x88"
                              "\x34\x8b\x5c\xa3\xa6\x10\x3d\x5c\xa1\xcb"
                              "\x9e\xef",
           32);
    r[10] = syscall(__NR_setsockopt, r[1], 0x117ul, 0x1ul, 0x2007ff6ful,
                    0x20ul);
    break;
  case 5:
    *(uint64_t*)0x2008dfc8 = (uint64_t)0x200eafe4;
    *(uint32_t*)0x2008dfd0 = (uint32_t)0x1c;
    *(uint64_t*)0x2008dfd8 = (uint64_t)0x20216000;
    *(uint64_t*)0x2008dfe0 = (uint64_t)0x5;
    *(uint64_t*)0x2008dfe8 = (uint64_t)0x20216000;
    *(uint64_t*)0x2008dff0 = (uint64_t)0x0;
    *(uint32_t*)0x2008dff8 = (uint32_t)0x3;
    *(uint64_t*)0x20216000 = (uint64_t)0x20216000;
    *(uint64_t*)0x20216008 = (uint64_t)0x0;
    *(uint64_t*)0x20216010 = (uint64_t)0x20216000;
    *(uint64_t*)0x20216018 = (uint64_t)0x0;
    *(uint64_t*)0x20216020 = (uint64_t)0x20123f7b;
    *(uint64_t*)0x20216028 = (uint64_t)0x0;
    *(uint64_t*)0x20216030 = (uint64_t)0x20176000;
    *(uint64_t*)0x20216038 = (uint64_t)0x0;
    *(uint64_t*)0x20216040 = (uint64_t)0x20216f27;
    *(uint64_t*)0x20216048 = (uint64_t)0xd9;
    r[28] = syscall(__NR_recvmsg, r[8], 0x2008dfc8ul, 0x40010101ul);
    break;
  }
  return 0;
}

void test()
{
  long i;
  pthread_t th[12];

  memset(r, -1, sizeof(r));
  srand(getpid());
  for (i = 0; i < 6; i++) {
    pthread_create(&th[i], 0, thr, (void*)i);
    usleep(rand() % 10000);
  }
  for (i = 0; i < 6; i++) {
    pthread_create(&th[6 + i], 0, thr, (void*)i);
    if (rand() % 2)
      usleep(rand() % 10000);
  }
  usleep(rand() % 100000);
}

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