// https://syzkaller.appspot.com/bug?id=e7af9f950d9a214f2afd68b5449e296a07dc3e4e
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <linux/futex.h>
#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/syscall.h>
#include <unistd.h>

static void test();

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

struct thread_t {
  int created, running, call;
  pthread_t th;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE))
      syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE);
    syscall(SYS_futex, &th->running, FUTEX_WAKE);
  }
  return 0;
}

static void execute(int num_calls)
{
  int call, thread;
  running = 0;
  for (call = 0; call < num_calls; call++) {
    for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        pthread_attr_t attr;
        pthread_attr_init(&attr);
        pthread_attr_setstacksize(&attr, 128 << 10);
        pthread_create(&th->th, &attr, thr, th);
      }
      if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) {
        th->call = call;
        __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE);
        syscall(SYS_futex, &th->running, FUTEX_WAKE);
        struct timespec ts;
        ts.tv_sec = 0;
        ts.tv_nsec = 20 * 1000 * 1000;
        syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts);
        if (running)
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

long r[3];
void execute_call(int call)
{
  switch (call) {
  case 0:
    syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
    break;
  case 1:
    r[0] = syscall(__NR_socket, 0xa, 2, 0);
    break;
  case 2:
    memcpy((void*)0x20190fd8,
           "\x73\x69\x74\x30\x00\x00\xfb\xff\x00\x00\x00\x00\x00\x00\x00\x00",
           16);
    *(uint32_t*)0x20190fe8 = 0;
    *(uint8_t*)0x20190fec = 0;
    *(uint8_t*)0x20190fed = 0;
    *(uint8_t*)0x20190fee = 0;
    *(uint8_t*)0x20190fef = 0;
    *(uint8_t*)0x20190ff0 = 0;
    *(uint8_t*)0x20190ff1 = 0;
    *(uint8_t*)0x20190ff2 = 0;
    *(uint8_t*)0x20190ff3 = 0;
    *(uint8_t*)0x20190ff4 = 0;
    *(uint8_t*)0x20190ff5 = 0;
    *(uint8_t*)0x20190ff6 = 0;
    *(uint8_t*)0x20190ff7 = 0;
    *(uint8_t*)0x20190ff8 = 0;
    *(uint8_t*)0x20190ff9 = 0;
    *(uint8_t*)0x20190ffa = 0;
    *(uint8_t*)0x20190ffb = 0;
    *(uint8_t*)0x20190ffc = 0;
    *(uint8_t*)0x20190ffd = 0;
    *(uint8_t*)0x20190ffe = 0;
    *(uint8_t*)0x20190fff = 0;
    if (syscall(__NR_ioctl, r[0], 0x8933, 0x20190fd8) != -1)
      r[1] = *(uint32_t*)0x20190fe8;
    break;
  case 3:
    *(uint8_t*)0x20c0cfb0 = 0xfe;
    *(uint8_t*)0x20c0cfb1 = 0x80;
    *(uint8_t*)0x20c0cfb2 = 0;
    *(uint8_t*)0x20c0cfb3 = 0;
    *(uint8_t*)0x20c0cfb4 = 0;
    *(uint8_t*)0x20c0cfb5 = 0;
    *(uint8_t*)0x20c0cfb6 = 0;
    *(uint8_t*)0x20c0cfb7 = 0;
    *(uint8_t*)0x20c0cfb8 = 0;
    *(uint8_t*)0x20c0cfb9 = 0;
    *(uint8_t*)0x20c0cfba = 0;
    *(uint8_t*)0x20c0cfbb = 0;
    *(uint8_t*)0x20c0cfbc = 0;
    *(uint8_t*)0x20c0cfbd = 0;
    *(uint8_t*)0x20c0cfbe = 0;
    *(uint8_t*)0x20c0cfbf = 0xaa;
    *(uint64_t*)0x20c0cfc0 = htobe64(0);
    *(uint64_t*)0x20c0cfc8 = htobe64(1);
    *(uint64_t*)0x20c0cfd0 = htobe64(0);
    *(uint64_t*)0x20c0cfd8 = htobe64(1);
    *(uint32_t*)0x20c0cfe0 = 0;
    *(uint16_t*)0x20c0cfe4 = 0;
    *(uint16_t*)0x20c0cfe6 = 0;
    *(uint32_t*)0x20c0cfe8 = -1;
    *(uint64_t*)0x20c0cff0 = 0;
    *(uint32_t*)0x20c0cff8 = 0x400000;
    *(uint32_t*)0x20c0cffc = r[1];
    syscall(__NR_ioctl, r[0], 0x890b, 0x20c0cfb0);
    break;
  case 4:
    r[2] = syscall(__NR_socket, 0x10, 3, 0);
    break;
  case 5:
    *(uint64_t*)0x20bb2000 = 0x20447fd7;
    *(uint64_t*)0x20bb2008 = 0x29;
    memcpy((void*)0x20447fd7, "\x29\x00\x00\x00\x18\x00\x31\x15\xff\xff\xef\x00"
                              "\x00\xc5\x0a\x17\x0a\x80\x00\x66\x01\x6d\x00\x09"
                              "\x99\x98\xff\xbf\x08\x00\x08\x00\x04\x00\x01\x00"
                              "\x0e\xf4\xff\x01\xff",
           41);
    syscall(__NR_writev, r[2], 0x20bb2000, 1);
    break;
  }
}

void test()
{
  memset(r, -1, sizeof(r));
  execute(6);
}

int main()
{
  for (;;) {
    loop();
  }
}