// https://syzkaller.appspot.com/bug?id=ca73228d70ce8bdc08a253f931708a15f2e777e1
// 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;
      }
    }
  }
}

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

long r[9];
void execute_call(int call)
{
  switch (call) {
  case 0:
    syscall(__NR_mmap, 0x20000000, 0xe7d000, 3, 0x32, -1, 0);
    break;
  case 1:
    memcpy((void*)0x20e7a000, "ceph", 5);
    *(uint8_t*)0x2052d000 = 0x73;
    *(uint8_t*)0x2052d001 = 0x79;
    *(uint8_t*)0x2052d002 = 0x7a;
    *(uint8_t*)0x2052d003 = 0x23;
    *(uint8_t*)0x2052d004 = 0;
    memcpy((void*)0x20e7a000, "bdev/", 6);
    r[0] = syscall(__NR_request_key, 0x20e7a000, 0x2052d000, 0x20e7a000, -1);
    break;
  case 2:
    memcpy((void*)0x20aa2ff6, "blacklist", 10);
    *(uint8_t*)0x20e7affb = 0x73;
    *(uint8_t*)0x20e7affc = 0x79;
    *(uint8_t*)0x20e7affd = 0x7a;
    *(uint8_t*)0x20e7affe = 0x20;
    *(uint8_t*)0x20e7afff = 0;
    memcpy((void*)0x20821fff, "", 1);
    r[1] = syscall(__NR_request_key, 0x20aa2ff6, 0x20e7affb, 0x20821fff,
                   0xfffffffd);
    break;
  case 3:
    syscall(__NR_mmap, 0x20e7d000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 4:
    memcpy((void*)0x20e7dff8, "./file0", 8);
    r[2] = syscall(__NR_openat, 0xffffff9c, 0x20e7dff8, 0x503480, 5);
    break;
  case 5:
    memcpy((void*)0x2044eff6, "blacklist", 10);
    syscall(__NR_ioctl, r[2], 0x40082406, 0x2044eff6);
    break;
  case 6:
    syscall(__NR_keyctl, 0xc, r[0], 0x20b7df17, 0, r[1]);
    break;
  case 7:
    syscall(__NR_mmap, 0x20e7e000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 8:
    syscall(__NR_mmap, 0x20e7e000, 0x1000, 3, 0x32, -1, 0);
    break;
  case 9:
    memcpy((void*)0x2066b000, "\x63\x65\x70\x83\x00\x3b", 6);
    r[3] = syscall(__NR_memfd_create, 0x2066b000, 3);
    break;
  case 10:
    *(uint32_t*)0x20000000 = 0;
    syscall(__NR_setsockopt, r[3], 0x11, 1, 0x20000000, 4);
    break;
  case 11:
    *(uint32_t*)0x20e7c000 = 0xc;
    if (syscall(__NR_getsockopt, r[3], 1, 0x11, 0x20e7c000, 0x20e7c000) != -1)
      r[4] = *(uint32_t*)0x20e7c000;
    break;
  case 12:
    syscall(__NR_wait4, r[4], 0x20b17ffc, 0x41000000, 0x20e7cf70);
    break;
  case 13:
    *(uint64_t*)0x20e7bff0 = 0x2090b000;
    *(uint64_t*)0x20e7bff8 = 0x2000;
    syscall(__NR_ioctl, r[3], 0xc020aa04, 0x20e7bff0);
    break;
  case 14:
    syscall(__NR_ioctl, r[3], 0x8004745a, 0x200e0ffd);
    break;
  case 15:
    syscall(__NR_ioctl, r[2], 0x6430);
    break;
  case 16:
    syscall(__NR_ioctl, r[2], 0x4c00, r[3]);
    break;
  case 17:
    r[5] = syscall(__NR_ioctl, r[3], 0x4c82);
    break;
  case 18:
    syscall(__NR_ioctl, r[3], 0x4c81, r[5]);
    break;
  case 19:
    r[6] = syscall(__NR_socket, 0xa, 2, 0);
    break;
  case 20:
    r[7] = syscall(__NR_socket, 0x18, 1, 1);
    break;
  case 21:
    *(uint16_t*)0x20e71000 = 0x18;
    *(uint32_t*)0x20e71002 = 1;
    *(uint32_t*)0x20e71006 = 0;
    *(uint32_t*)0x20e7100a = r[6];
    *(uint16_t*)0x20e7100e = 3;
    *(uint16_t*)0x20e71010 = 0;
    *(uint16_t*)0x20e71012 = 3;
    *(uint16_t*)0x20e71014 = 0;
    *(uint16_t*)0x20e71016 = 0xa;
    *(uint16_t*)0x20e71018 = htobe16(0x4e22);
    *(uint32_t*)0x20e7101a = 3;
    *(uint8_t*)0x20e7101e = 0xfe;
    *(uint8_t*)0x20e7101f = 0x80;
    *(uint8_t*)0x20e71020 = 0;
    *(uint8_t*)0x20e71021 = 0;
    *(uint8_t*)0x20e71022 = 0;
    *(uint8_t*)0x20e71023 = 0;
    *(uint8_t*)0x20e71024 = 0;
    *(uint8_t*)0x20e71025 = 0;
    *(uint8_t*)0x20e71026 = 0;
    *(uint8_t*)0x20e71027 = 0;
    *(uint8_t*)0x20e71028 = 0;
    *(uint8_t*)0x20e71029 = 0;
    *(uint8_t*)0x20e7102a = 0;
    *(uint8_t*)0x20e7102b = 0;
    *(uint8_t*)0x20e7102c = 0;
    *(uint8_t*)0x20e7102d = 0xbb;
    *(uint32_t*)0x20e7102e = 4;
    syscall(__NR_connect, r[7], 0x20e71000, 0x32);
    break;
  case 22:
    r[8] = syscall(__NR_socket, 0x18, 1, 1);
    break;
  case 23:
    syscall(__NR_close, r[6]);
    break;
  case 24:
    syscall(__NR_dup2, r[8], r[7]);
    break;
  }
}

void test()
{
  memset(r, -1, sizeof(r));
  execute(25);
  collide = 1;
  execute(25);
}

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