// https://syzkaller.appspot.com/bug?id=61ec9b78979c77b478704a46b43300223433acfe
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <fcntl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <unistd.h>

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

static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1)
{

  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == (uintptr_t)-1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0,
             (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

static void test();

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

long r[10];
void* thr(void* arg)
{
  switch ((long)arg) {
  case 0:
    r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                   0xfffffffffffffffful, 0x0ul);
    break;
  case 1:
    r[1] = syscall(__NR_pipe2, 0x20dff000ul, 0x800ul);
    if (r[1] != -1)
      r[2] = *(uint32_t*)0x20dff004;
    break;
  case 2:
    r[3] = syscall(__NR_ioctl, r[2], 0x5425ul, 0x80000000ul);
    break;
  case 3:
    memcpy((void*)0x20480ff8, "\x2e\x2f\x66\x69\x6c\x65\x30\x00", 8);
    r[5] = syscall(__NR_readlink, 0x20480ff8ul, 0x2014efe4ul, 0x1cul);
    break;
  case 4:
    memcpy((void*)0x20303000, "\x73\x74\x61\x63\x6b\x00", 6);
    r[7] = syz_open_procfs(0x0ul, 0x20303000ul);
    break;
  case 5:
    *(uint64_t*)0x20ab9000 = (uint64_t)0x0;
    r[9] = syscall(__NR_sendfile, r[7], r[7], 0x20ab9000ul, 0x2ul);
    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) {
      loop();
      return 0;
    }
  }
  sleep(1000000);
  return 0;
}