// https://syzkaller.appspot.com/bug?id=b23d95999136f86da560efe4adcfef2381a3b584
// 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>

__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 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[70];
void* thr(void* arg)
{
  switch ((long)arg) {
  case 0:
    r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul,
                   0xfffffffffffffffful, 0x0ul);
    break;
  case 1:
    memcpy((void*)0x20bb8000, "\x6e\x65\x74\x2f\x69\x70\x36\x5f\x6d\x72"
                              "\x5f\x63\x61\x63\x68\x65\x00",
           17);
    r[2] = syz_open_procfs(0x0ul, 0x20bb8000ul);
    break;
  case 2:
    r[3] = syscall(__NR_pread64, r[2], 0x20caef7bul, 0x1cul, 0x4cul);
    break;
  case 3:
    *(uint16_t*)0x20c95000 = (uint16_t)0x8;
    *(uint16_t*)0x20c95002 = (uint16_t)0x3;
    *(uint16_t*)0x20c95004 = (uint16_t)0x8008;
    *(uint32_t*)0x20c95008 = (uint32_t)0x4;
    *(uint32_t*)0x20c9500c = (uint32_t)0x80000000;
    *(uint32_t*)0x20c95010 = (uint32_t)0xfffffffffffffff9;
    *(uint32_t*)0x20c95014 = (uint32_t)0x101;
    *(uint32_t*)0x20c95018 = (uint32_t)0x80000000;
    *(uint32_t*)0x20c9501c = (uint32_t)0x0;
    *(uint32_t*)0x20003ffc = (uint32_t)0x20;
    r[14] = syscall(__NR_getsockopt, r[2], 0x84ul, 0xaul, 0x20c95000ul,
                    0x20003ffcul);
    if (r[14] != -1)
      r[15] = *(uint32_t*)0x20c9501c;
    break;
  case 4:
    *(uint32_t*)0x20a20ffa = r[15];
    *(uint16_t*)0x20a20ffe = (uint16_t)0x8;
    r[18] = syscall(__NR_setsockopt, r[2], 0x84ul, 0x18ul, 0x20a20ffaul,
                    0x6ul);
    break;
  case 5:
    r[19] = syscall(__NR_socket, 0xaul, 0x2ul, 0x0ul);
    break;
  case 6:
    *(uint16_t*)0x206a4fa4 = (uint16_t)0xa;
    *(uint16_t*)0x206a4fa6 = (uint16_t)0x204e;
    *(uint32_t*)0x206a4fa8 = (uint32_t)0x0;
    *(uint8_t*)0x206a4fac = (uint8_t)0xfe;
    *(uint8_t*)0x206a4fad = (uint8_t)0x80;
    *(uint8_t*)0x206a4fae = (uint8_t)0x0;
    *(uint8_t*)0x206a4faf = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb0 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb1 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb2 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb3 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb4 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb5 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb6 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb7 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb8 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fb9 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fba = (uint8_t)0x0;
    *(uint8_t*)0x206a4fbb = (uint8_t)0xaa;
    *(uint32_t*)0x206a4fbc = (uint32_t)0x0;
    *(uint16_t*)0x206a4fc0 = (uint16_t)0xa;
    *(uint16_t*)0x206a4fc2 = (uint16_t)0x204e;
    *(uint32_t*)0x206a4fc4 = (uint32_t)0x0;
    *(uint8_t*)0x206a4fc8 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fc9 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fca = (uint8_t)0x0;
    *(uint8_t*)0x206a4fcb = (uint8_t)0x0;
    *(uint8_t*)0x206a4fcc = (uint8_t)0x0;
    *(uint8_t*)0x206a4fcd = (uint8_t)0x0;
    *(uint8_t*)0x206a4fce = (uint8_t)0x0;
    *(uint8_t*)0x206a4fcf = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd0 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd1 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd2 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd3 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd4 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd5 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd6 = (uint8_t)0x0;
    *(uint8_t*)0x206a4fd7 = (uint8_t)0x0;
    *(uint32_t*)0x206a4fd8 = (uint32_t)0x0;
    *(uint16_t*)0x206a4fdc = (uint16_t)0x0;
    *(uint32_t*)0x206a4fe0 = (uint32_t)0xf67;
    *(uint32_t*)0x206a4fe4 = (uint32_t)0x0;
    *(uint32_t*)0x206a4fe8 = (uint32_t)0x0;
    *(uint32_t*)0x206a4fec = (uint32_t)0x0;
    *(uint32_t*)0x206a4ff0 = (uint32_t)0x0;
    *(uint32_t*)0x206a4ff4 = (uint32_t)0x0;
    *(uint32_t*)0x206a4ff8 = (uint32_t)0x0;
    *(uint32_t*)0x206a4ffc = (uint32_t)0x0;
    r[69] = syscall(__NR_setsockopt, r[19], 0x29ul, 0xd2ul,
                    0x206a4fa4ul, 0x5cul);
    break;
  }
  return 0;
}

void test()
{
  long i;
  pthread_t th[14];

  memset(r, -1, sizeof(r));
  srand(getpid());
  for (i = 0; i < 7; i++) {
    pthread_create(&th[i], 0, thr, (void*)i);
    usleep(rand() % 10000);
  }
  for (i = 0; i < 7; i++) {
    pthread_create(&th[7 + i], 0, thr, (void*)i);
    if (rand() % 2)
      usleep(rand() % 10000);
  }
  usleep(rand() % 100000);
}

int main()
{
  use_temporary_dir();
  loop();
  return 0;
}