// https://syzkaller.appspot.com/bug?id=de316389db0fa0cd7ced6e564601ea8e56625ebc
// 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 <stdio.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 (__atomic_load_n(&running, __ATOMIC_RELAXED))
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

uint64_t r[7] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    memcpy((void*)0x200003c0, "./cgroup", 9);
    res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200003c0, 0x200002, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    syscall(__NR_fchdir, r[0]);
    break;
  case 2:
    memcpy((void*)0x20000700, "./bus", 6);
    res = syscall(__NR_creat, 0x20000700, 0);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    res = syscall(__NR_socket, 2, 0x80002, 1);
    if (res != -1)
      r[2] = res;
    break;
  case 4:
    *(uint16_t*)0x200000c0 = 0x18;
    *(uint32_t*)0x200000c2 = 1;
    *(uint32_t*)0x200000c6 = 0;
    *(uint32_t*)0x200000ca = r[2];
    *(uint16_t*)0x200000ce = 2;
    *(uint16_t*)0x200000d0 = htobe16(0x4e20);
    *(uint8_t*)0x200000d2 = 0xac;
    *(uint8_t*)0x200000d3 = 0x14;
    *(uint8_t*)0x200000d4 = 0x14;
    *(uint8_t*)0x200000d5 = 0xaa;
    *(uint8_t*)0x200000d6 = 0;
    *(uint8_t*)0x200000d7 = 0;
    *(uint8_t*)0x200000d8 = 0;
    *(uint8_t*)0x200000d9 = 0;
    *(uint8_t*)0x200000da = 0;
    *(uint8_t*)0x200000db = 0;
    *(uint8_t*)0x200000dc = 0;
    *(uint8_t*)0x200000dd = 0;
    *(uint16_t*)0x200000de = 4;
    *(uint16_t*)0x200000e0 = 1;
    *(uint16_t*)0x200000e2 = 4;
    *(uint16_t*)0x200000e4 = 4;
    syscall(__NR_connect, r[2], 0x200000c0, 0x26);
    break;
  case 5:
    memcpy((void*)0x2000fffa, "./bus", 6);
    res = syscall(__NR_open, 0x2000fffa, 0x141042, 0);
    if (res != -1)
      r[3] = res;
    break;
  case 6:
    *(uint64_t*)0x20000180 = 0;
    *(uint64_t*)0x20000040 = 0x30;
    syscall(__NR_splice, r[3], 0x20000180, r[1], 0x20000040, 0x7fffffff, 0xc);
    break;
  case 7:
    syscall(__NR_fallocate, r[3], 0, 0, 0x7f);
    break;
  case 8:
    res = syscall(__NR_socket, 0xa, 1, 0);
    if (res != -1)
      r[4] = res;
    break;
  case 9:
    memcpy((void*)0x20000140, "/selinux/commit_pending_bools", 30);
    syscall(__NR_openat, 0xffffffffffffff9c, 0x20000140, 1, 0);
    break;
  case 10:
    syscall(__NR_lseek, r[0], 0x81, 7);
    break;
  case 11:
    syscall(__NR_ioctl, r[4], 0x4000008912, 0x20000100);
    break;
  case 12:
    syscall(__NR_ioctl, r[1], 0x4b3a, 5);
    break;
  case 13:
    syscall(__NR_prctl, 0x14, -1);
    break;
  case 14:
    syscall(__NR_fsync, r[1]);
    break;
  case 15:
    res = syscall(__NR_socket, 2, 0x200000002, 0);
    if (res != -1)
      r[5] = res;
    break;
  case 16:
    res = syscall(__NR_socket, 0x18, 1, 1);
    if (res != -1)
      r[6] = res;
    break;
  case 17:
    *(uint16_t*)0x20000080 = 0x18;
    *(uint32_t*)0x20000082 = 1;
    *(uint32_t*)0x20000086 = 0;
    *(uint32_t*)0x2000008a = r[5];
    *(uint32_t*)0x2000008e = 3;
    *(uint32_t*)0x20000092 = 0;
    *(uint32_t*)0x20000096 = 1;
    *(uint32_t*)0x2000009a = 0;
    *(uint16_t*)0x2000009e = 0xa;
    *(uint16_t*)0x200000a0 = htobe16(0x4e20);
    *(uint32_t*)0x200000a2 = 5;
    *(uint8_t*)0x200000a6 = -1;
    *(uint8_t*)0x200000a7 = 2;
    *(uint8_t*)0x200000a8 = 0;
    *(uint8_t*)0x200000a9 = 0;
    *(uint8_t*)0x200000aa = 0;
    *(uint8_t*)0x200000ab = 0;
    *(uint8_t*)0x200000ac = 0;
    *(uint8_t*)0x200000ad = 0;
    *(uint8_t*)0x200000ae = 0;
    *(uint8_t*)0x200000af = 0;
    *(uint8_t*)0x200000b0 = 0;
    *(uint8_t*)0x200000b1 = 0;
    *(uint8_t*)0x200000b2 = 0;
    *(uint8_t*)0x200000b3 = 0;
    *(uint8_t*)0x200000b4 = 0;
    *(uint8_t*)0x200000b5 = 1;
    *(uint32_t*)0x200000b6 = 5;
    syscall(__NR_connect, r[6], 0x20000080, 0x3a);
    break;
  case 18:
    syscall(__NR_close, r[5]);
    break;
  case 19:
    syscall(__NR_close, r[6]);
    break;
  }
}

void loop()
{
  execute(20);
}

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