// https://syzkaller.appspot.com/bug?id=3c27eae7bdba97293b68e79c9700ac110f977eed
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <endian.h>
#include <linux/futex.h>
#include <pthread.h>
#include <stdlib.h>
#include <sys/syscall.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

static void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

static void execute_one();
extern unsigned long long procid;

void loop()
{
  while (1) {
    execute_one();
  }
}

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;
      }
    }
  }
}

#ifndef __NR_pkey_alloc
#define __NR_pkey_alloc 330
#endif

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
unsigned long long procid;
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    syscall(__NR_clone, 0, 0x20b53000, 0x2084effc, 0x20c35ffc, 0x20b3bfff);
    break;
  case 1:
    *(uint32_t*)0x200004c0 = 2;
    *(uint32_t*)0x200004c4 = 0x70;
    *(uint8_t*)0x200004c8 = 0x72;
    *(uint8_t*)0x200004c9 = 0;
    *(uint8_t*)0x200004ca = 0;
    *(uint8_t*)0x200004cb = 0;
    *(uint32_t*)0x200004cc = 0;
    *(uint64_t*)0x200004d0 = 0;
    *(uint64_t*)0x200004d8 = 0;
    *(uint64_t*)0x200004e0 = 0;
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 0, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 1, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 2, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 3, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 4, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 5, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 6, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 7, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 8, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 9, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 10, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 11, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 12, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 13, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 14, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 15, 2);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 17, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 18, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 19, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 20, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 21, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 22, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 23, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 24, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 25, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 26, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 27, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 28, 1);
    STORE_BY_BITMASK(uint64_t, 0x200004e8, 0, 29, 35);
    *(uint32_t*)0x200004f0 = 0;
    *(uint32_t*)0x200004f4 = 0;
    *(uint64_t*)0x200004f8 = 0x20000100;
    *(uint64_t*)0x20000500 = 0;
    *(uint64_t*)0x20000508 = 0;
    *(uint64_t*)0x20000510 = 0;
    *(uint32_t*)0x20000518 = 0;
    *(uint32_t*)0x2000051c = 0;
    *(uint64_t*)0x20000520 = 0;
    *(uint32_t*)0x20000528 = 0;
    *(uint16_t*)0x2000052c = 0;
    *(uint16_t*)0x2000052e = 0;
    syscall(__NR_perf_event_open, 0x200004c0, 0, -1, -1, 0);
    break;
  case 2:
    memcpy((void*)0x20d04000, "./file0", 8);
    memcpy((void*)0x20903000, "./file0", 8);
    memcpy((void*)0x20811ffa, "bdev", 5);
    syscall(__NR_mount, 0x20d04000, 0x20903000, 0x20811ffa, 0x100000,
            0x20444000);
    break;
  case 3:
    memcpy((void*)0x20fb6000, "./file0", 8);
    memcpy((void*)0x20d78000, ".", 1);
    memcpy((void*)0x20fdb000, "ubifs", 6);
    syscall(__NR_mount, 0x20fb6000, 0x20d78000, 0x20fdb000, 0, 0);
    break;
  case 4:
    *(uint32_t*)0x20000040 = 1;
    *(uint32_t*)0x20000044 = 0x70;
    *(uint8_t*)0x20000048 = 0;
    *(uint8_t*)0x20000049 = 0;
    *(uint8_t*)0x2000004a = 0;
    *(uint8_t*)0x2000004b = 0;
    *(uint32_t*)0x2000004c = 0;
    *(uint64_t*)0x20000050 = 0x50d;
    *(uint64_t*)0x20000058 = 0;
    *(uint64_t*)0x20000060 = 0;
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 0, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 1, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 2, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 3, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 4, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 5, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 6, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 7, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 8, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 9, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 10, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 11, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 12, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 13, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 14, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 15, 2);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 17, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 18, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 19, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 20, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 21, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 22, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 23, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 24, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 25, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 26, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 27, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 28, 1);
    STORE_BY_BITMASK(uint64_t, 0x20000068, 0, 29, 35);
    *(uint32_t*)0x20000070 = 0;
    *(uint32_t*)0x20000074 = 0;
    *(uint64_t*)0x20000078 = 0x20000000;
    *(uint64_t*)0x20000080 = 0;
    *(uint64_t*)0x20000088 = 0;
    *(uint64_t*)0x20000090 = 0;
    *(uint32_t*)0x20000098 = 0;
    *(uint32_t*)0x2000009c = 0;
    *(uint64_t*)0x200000a0 = 0;
    *(uint32_t*)0x200000a8 = 0;
    *(uint16_t*)0x200000ac = 0;
    *(uint16_t*)0x200000ae = 0;
    res = syscall(__NR_perf_event_open, 0x20000040, 0, 0, -1, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 5:
    syscall(__NR_pkey_alloc, 0, 0);
    break;
  case 6:
    syscall(__NR_ioctl, -1, 0x4b2f, 0xdf6);
    break;
  case 7:
    memcpy((void*)0x20377ff8, ".", 1);
    memcpy((void*)0x20187ff8, ".", 1);
    memcpy((void*)0x20753000, "mslos", 6);
    syscall(__NR_mount, 0x20377ff8, 0x20187ff8, 0x20753000, 0, 0x200e7000);
    break;
  case 8:
    memcpy((void*)0x20377ff8, ".", 1);
    memcpy((void*)0x20187ff8, ".", 1);
    memcpy((void*)0x20753000, "mslos", 6);
    syscall(__NR_mount, 0x20377ff8, 0x20187ff8, 0x20753000, 0x5010, 0x200e7000);
    break;
  case 9:
    memcpy((void*)0x2000fffa, "./bus", 6);
    syscall(__NR_open, 0x2000fffa, 0, 0);
    break;
  case 10:
    memcpy((void*)0x200000c0, "/dev/snapshot", 14);
    syscall(__NR_openat, 0xffffffffffffff9c, 0x200000c0, 0x400, 0);
    break;
  case 11:
    syscall(__NR_write, -1, 0x20000740, 0);
    break;
  case 12:
    *(uint32_t*)0x20000980 = 0;
    *(uint32_t*)0x20000984 = 0;
    *(uint32_t*)0x20000988 = 0x1ff;
    *(uint32_t*)0x2000098c = 0;
    *(uint32_t*)0x20000990 = 0;
    *(uint32_t*)0x20000994 = 7;
    *(uint8_t*)0x20000998 = 0;
    *(uint8_t*)0x20000999 = 0;
    *(uint8_t*)0x2000099a = 0;
    *(uint8_t*)0x2000099b = 0;
    *(uint8_t*)0x2000099c = 0;
    *(uint8_t*)0x2000099d = 0;
    *(uint8_t*)0x2000099e = 0;
    *(uint8_t*)0x2000099f = 0;
    *(uint8_t*)0x200009a0 = 0;
    *(uint8_t*)0x200009a1 = 0;
    *(uint8_t*)0x200009a2 = 0;
    *(uint8_t*)0x200009a3 = 0;
    *(uint8_t*)0x200009a4 = 0;
    *(uint8_t*)0x200009a5 = 0;
    *(uint8_t*)0x200009a6 = 0;
    *(uint8_t*)0x200009a7 = 0;
    *(uint8_t*)0x200009a8 = 0;
    *(uint8_t*)0x200009a9 = 0;
    *(uint8_t*)0x200009aa = 0;
    *(uint8_t*)0x200009ab = 0;
    *(uint8_t*)0x200009ac = 0;
    *(uint8_t*)0x200009ad = 0;
    *(uint8_t*)0x200009ae = 0;
    *(uint8_t*)0x200009af = 0;
    *(uint8_t*)0x200009b0 = 0;
    *(uint8_t*)0x200009b1 = 0;
    *(uint8_t*)0x200009b2 = 0;
    *(uint8_t*)0x200009b3 = 0;
    *(uint8_t*)0x200009b4 = 0;
    *(uint8_t*)0x200009b5 = 0;
    *(uint8_t*)0x200009b6 = 0;
    *(uint8_t*)0x200009b7 = 0;
    *(uint8_t*)0x200009b8 = 0;
    *(uint8_t*)0x200009b9 = 0;
    *(uint8_t*)0x200009ba = 0;
    *(uint8_t*)0x200009bb = 0;
    *(uint8_t*)0x200009bc = 0;
    *(uint8_t*)0x200009bd = 0;
    *(uint8_t*)0x200009be = 0;
    *(uint8_t*)0x200009bf = 0;
    *(uint8_t*)0x200009c0 = 0;
    *(uint8_t*)0x200009c1 = 0;
    *(uint8_t*)0x200009c2 = 0;
    *(uint8_t*)0x200009c3 = 0;
    *(uint8_t*)0x200009c4 = 0;
    *(uint8_t*)0x200009c5 = 0;
    *(uint8_t*)0x200009c6 = 0;
    *(uint8_t*)0x200009c7 = 0;
    *(uint8_t*)0x200009c8 = 0;
    *(uint8_t*)0x200009c9 = 0;
    *(uint8_t*)0x200009ca = 0;
    *(uint8_t*)0x200009cb = 0;
    *(uint8_t*)0x200009cc = 0;
    *(uint8_t*)0x200009cd = 0;
    *(uint8_t*)0x200009ce = 0;
    *(uint8_t*)0x200009cf = 0;
    *(uint8_t*)0x200009d0 = 0;
    *(uint8_t*)0x200009d1 = 0;
    *(uint8_t*)0x200009d2 = 0;
    *(uint8_t*)0x200009d3 = 0;
    *(uint8_t*)0x200009d4 = 0;
    *(uint8_t*)0x200009d5 = 0;
    *(uint8_t*)0x200009d6 = 0;
    *(uint8_t*)0x200009d7 = 0;
    syscall(__NR_ioctl, -1, 0xc058534b, 0x20000980);
    break;
  case 13:
    res = syscall(__NR_socket, 0xa, 2, 0);
    if (res != -1)
      r[1] = res;
    break;
  case 14:
    res = syscall(__NR_socket, 0x18, 1, 1);
    if (res != -1)
      r[2] = res;
    break;
  case 15:
    *(uint16_t*)0x205fafd2 = 0x18;
    *(uint32_t*)0x205fafd4 = 1;
    *(uint32_t*)0x205fafd8 = 0;
    *(uint32_t*)0x205fafdc = r[1];
    *(uint16_t*)0x205fafe0 = 2;
    *(uint16_t*)0x205fafe2 = htobe16(0);
    *(uint32_t*)0x205fafe4 = htobe32(0xe0000002);
    *(uint8_t*)0x205fafe8 = 0;
    *(uint8_t*)0x205fafe9 = 0;
    *(uint8_t*)0x205fafea = 0;
    *(uint8_t*)0x205fafeb = 0;
    *(uint8_t*)0x205fafec = 0;
    *(uint8_t*)0x205fafed = 0;
    *(uint8_t*)0x205fafee = 0;
    *(uint8_t*)0x205fafef = 0;
    *(uint32_t*)0x205faff0 = 4;
    *(uint32_t*)0x205faff4 = 0;
    *(uint32_t*)0x205faff8 = 0;
    *(uint32_t*)0x205faffc = 0;
    syscall(__NR_connect, r[2], 0x205fafd2, 0x2e);
    break;
  case 16:
    *(uint64_t*)0x20f6bfe8 = 0xaa;
    *(uint64_t*)0x20f6bff0 = 0;
    *(uint64_t*)0x20f6bff8 = 0;
    syscall(__NR_ioctl, -1, 0xc018aa3f, 0x20f6bfe8);
    break;
  case 17:
    syscall(__NR_dup2, r[0], r[1]);
    break;
  case 18:
    syscall(__NR_close, r[2]);
    break;
  }
}

void execute_one()
{
  execute(19);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  char* cwd = get_current_dir_name();
  for (procid = 0; procid < 8; procid++) {
    if (fork() == 0) {
      for (;;) {
        if (chdir(cwd))
          fail("failed to chdir");
        use_temporary_dir();
        loop();
      }
    }
  }
  sleep(1000000);
  return 0;
}