// https://syzkaller.appspot.com/bug?id=ec842e5517a7de1a24951059e7746db582a0cda2
// 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>

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;
      }
    }
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    memcpy((void*)0x202ac000, "/dev/vhost-net", 15);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x202ac000, 2, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint64_t*)0x20000040 = 0;
    syscall(__NR_ioctl, r[0], 0x40000000af01, 0x20000040);
    break;
  case 2:
    memcpy((void*)0x20000000, "/dev/audio", 11);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000000, 0, 0);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    syscall(__NR_close, r[1]);
    break;
  case 4:
    syscall(__NR_socket, 0x11, 3, 0x300);
    break;
  case 5:
    *(uint64_t*)0x20000640 = 0x200000000;
    syscall(__NR_ioctl, r[0], 0x4008af00, 0x20000640);
    break;
  case 6:
    res = syscall(__NR_io_setup, 0xa82, 0x200003c0);
    if (res != -1)
      r[2] = *(uint64_t*)0x200003c0;
    break;
  case 7:
    *(uint64_t*)0x200001c0 = 0x20000180;
    *(uint64_t*)0x20000180 = 0;
    *(uint32_t*)0x20000188 = 0;
    *(uint32_t*)0x2000018c = 0;
    *(uint16_t*)0x20000190 = 0;
    *(uint16_t*)0x20000192 = 0;
    *(uint32_t*)0x20000194 = r[0];
    *(uint64_t*)0x20000198 = 0x200000c0;
    memcpy((void*)0x200000c0,
           "\x0a\x20\x87\x3c\xfa\x2d\x1b\xae\x8e\x68\x89\xf4\x26\x4b\xc9\x98"
           "\xab\xf9\x98\x3a\xff\xee\x1a\x90\x56\xaa\xab\xf8\x4e\x5a\x4b\x33"
           "\x9c\x24\x13\xd5\x14\xdc\x9b\x35\xca\x67\x3d\x73\x3f\xb4\x5f\xf3"
           "\xa7\xdf\x37\xd6\x70\x76\x2a\x8d\x51\xc7\xa4\x5d\x14\xa0\x1a\x03"
           "\xc8\x5c\xb4\x5c\x56\xdc\x61\xb7",
           72);
    *(uint64_t*)0x200001a0 = 0x48;
    *(uint64_t*)0x200001a8 = 0;
    *(uint64_t*)0x200001b0 = 0;
    *(uint32_t*)0x200001b8 = 0;
    *(uint32_t*)0x200001bc = -1;
    syscall(__NR_io_submit, r[2], 1, 0x200001c0);
    break;
  case 8:
    *(uint32_t*)0x20002c40 = 0;
    *(uint32_t*)0x20002c44 = 0;
    syscall(__NR_ioctl, r[0], 0x4008af03, 0x20002c40);
    break;
  case 9:
    *(uint32_t*)0x20d7c000 = 0;
    *(uint32_t*)0x20d7c004 = r[1];
    syscall(__NR_ioctl, r[0], 0x4008af30, 0x20d7c000);
    break;
  }
}

void loop()
{
  execute(10);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}