// https://syzkaller.appspot.com/bug?id=5cf01aa760647bcea3b9ecdbb97f70975582f64f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

uint64_t r[1] = {0xffffffffffffffff};

int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  use_temporary_dir();
  intptr_t res = 0;
  memcpy((void*)0x20000440, "/dev/vcsa\000", 10);
  res = syscall(__NR_openat, 0xffffffffffffff9cul, 0x20000440ul, 0ul, 0ul);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x20001b00 = 0x20001b40;
  *(uint64_t*)0x20001b08 = 0x19008;
  syscall(__NR_preadv, r[0], 0x20001b00ul, 6ul, 3, 0);
  return 0;
}