// https://syzkaller.appspot.com/bug?id=ca73228d70ce8bdc08a253f931708a15f2e777e1
// autogenerated by syzkaller (http://github.com/google/syzkaller)

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

static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf));
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

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 356
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#ifndef __NR_fcntl
#define __NR_fcntl 55
#endif
#ifndef __NR_socket
#define __NR_socket 359
#endif
#ifndef __NR_connect
#define __NR_connect 362
#endif
#ifndef __NR_dup2
#define __NR_dup2 63
#endif
#ifndef __NR_keyctl
#define __NR_keyctl 288
#endif
#ifndef __NR_getpeername
#define __NR_getpeername 368
#endif
#ifndef __NR_setsockopt
#define __NR_setsockopt 366
#endif
#ifndef __NR_close
#define __NR_close 6
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_request_key
#define __NR_request_key 287
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

long r[8];
void execute_call(int call)
{
  switch (call) {
  case 0:
    syscall(__NR_mmap, 0x20000000, 0xe7c000, 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:
    memcpy((void*)0x204d8000, "/dev/usbmon#", 13);
    r[2] = syz_open_dev(0x204d8000, 6, 0x2102);
    break;
  case 4:
    *(uint32_t*)0x20419ffc = 0x14;
    syscall(__NR_getpeername, r[2], 0x201a2000, 0x20419ffc);
    break;
  case 5:
    syscall(__NR_keyctl, 0xc, r[0], 0x20b7df17, 0, r[1]);
    break;
  case 6:
    memcpy((void*)0x20663000, "\x62\x6c\x61\x63\xcd\x6c\x69\x81\xbe\x00", 10);
    r[3] = syscall(__NR_memfd_create, 0x20663000, 0);
    break;
  case 7:
    *(uint32_t*)0x20000000 = 0;
    syscall(__NR_setsockopt, r[3], 0x11, 1, 0x20000000, 4);
    break;
  case 8:
    r[4] = syscall(__NR_ioctl, r[3], 0x4c82);
    break;
  case 9:
    syscall(__NR_ioctl, r[3], 0x4c81, r[4]);
    break;
  case 10:
    syscall(__NR_fcntl, r[3], 0xa, 0x18);
    break;
  case 11:
    r[5] = syscall(__NR_socket, 0xa, 2, 0);
    break;
  case 12:
    r[6] = syscall(__NR_socket, 0x18, 1, 1);
    break;
  case 13:
    *(uint16_t*)0x20e71000 = 0x18;
    *(uint32_t*)0x20e71002 = 1;
    *(uint32_t*)0x20e71006 = 0;
    *(uint32_t*)0x20e7100a = r[5];
    *(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[6], 0x20e71000, 0x32);
    break;
  case 14:
    r[7] = syscall(__NR_socket, 0x18, 1, 1);
    break;
  case 15:
    syscall(__NR_close, r[5]);
    break;
  case 16:
    syscall(__NR_dup2, r[7], r[6]);
    break;
  }
}

void test()
{
  memset(r, -1, sizeof(r));
  execute(17);
  collide = 1;
  execute(17);
}

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