// https://syzkaller.appspot.com/bug?id=0bb56a5a48b000b52aa2b0d8dd20b1f545214d91
// 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 int collide;

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);
        if (collide && call % 2)
          break;
        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[1] = {0xffffffffffffffff};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    res = syscall(__NR_socket, 0x40000000015, 5, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint32_t*)0x206da000 = 0;
    syscall(__NR_setsockopt, r[0], 0x114, 8, 0x206da000, 4);
    break;
  case 2:
    *(uint8_t*)0x20000140 = 0xfe;
    *(uint8_t*)0x20000141 = 0x80;
    *(uint8_t*)0x20000142 = 0;
    *(uint8_t*)0x20000143 = 0;
    *(uint8_t*)0x20000144 = 0;
    *(uint8_t*)0x20000145 = 0;
    *(uint8_t*)0x20000146 = 0;
    *(uint8_t*)0x20000147 = 0;
    *(uint8_t*)0x20000148 = 0;
    *(uint8_t*)0x20000149 = 0;
    *(uint8_t*)0x2000014a = 0;
    *(uint8_t*)0x2000014b = 0;
    *(uint8_t*)0x2000014c = 0;
    *(uint8_t*)0x2000014d = 0;
    *(uint8_t*)0x2000014e = 0;
    *(uint8_t*)0x2000014f = 0xaa;
    *(uint32_t*)0x20000150 = 0x32;
    *(uint32_t*)0x20000154 = 0;
    syscall(__NR_ioctl, r[0], 0x8918, 0x20000140);
    break;
  case 3:
    *(uint16_t*)0x20000340 = 2;
    *(uint16_t*)0x20000342 = htobe16(0);
    *(uint32_t*)0x20000344 = htobe32(0x7f000001);
    *(uint8_t*)0x20000348 = 0;
    *(uint8_t*)0x20000349 = 0;
    *(uint8_t*)0x2000034a = 0;
    *(uint8_t*)0x2000034b = 0;
    *(uint8_t*)0x2000034c = 0;
    *(uint8_t*)0x2000034d = 0;
    *(uint8_t*)0x2000034e = 0;
    *(uint8_t*)0x2000034f = 0;
    syscall(__NR_bind, r[0], 0x20000340, 0x10);
    break;
  case 4:
    *(uint16_t*)0x20000380 = 0x1f;
    *(uint8_t*)0x20000382 = 0;
    *(uint8_t*)0x20000383 = -1;
    *(uint8_t*)0x20000384 = 0xbf;
    *(uint8_t*)0x20000385 = 0x40;
    *(uint8_t*)0x20000386 = 0;
    *(uint8_t*)0x20000387 = 4;
    *(uint8_t*)0x20000388 = 0xe3;
    *(uint64_t*)0x20000400 = 0x20000180;
    *(uint64_t*)0x20000408 = 0xf6;
    *(uint64_t*)0x20000410 = 0x20000280;
    *(uint64_t*)0x20000418 = 0x40;
    syscall(__NR_setsockopt, r[0], 0x114, 7, 0x20000380, 0xa0);
    break;
  }
}

void test()
{
  execute(5);
  collide = 1;
  execute(5);
}

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