// https://syzkaller.appspot.com/bug?id=eb1e119dafaaba7aa276a3c4da457532baeac215
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/futex.h>

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i;
  for (i = 0; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_RELAXED))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

static long syz_open_dev(volatile long a0, volatile long a1, volatile long 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) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(a1 % 10);
      a1 /= 10;
    }
    return open(buf, a2, 0);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  int i;
  for (i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

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 (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  int i, call, thread;
  for (call = 0; call < 2; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 45);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter;
  for (iter = 0;; iter++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res;
  switch (call) {
  case 0:
    memcpy((void*)0x200000c0, "/dev/binder#\000", 13);
    res = syz_open_dev(0x200000c0, 0, 0);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint64_t*)0x20000140 = 0xfffffca6;
    *(uint64_t*)0x20000148 = 0;
    *(uint64_t*)0x20000150 = 0x20000500;
    memcpy(
        (void*)0x20000500,
        "\x11\x63\x48\x40\x00\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x97\x89\xd6\x7e\x92\xf8"
        "\xeb\xf4\x76\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x56\xa3\x17\x73\x59\xa5\xbe\x4d"
        "\x7c\xc9\x3e\x2c\x27\xde\x9c\xb2\xf7\x8c\xe6\x84\xf9\xb9\x85\x6a\xda"
        "\xad\x83\x8b\xba\xb7\x80\x16\x9d\xc3\x99\x1a\xf9\xf5\x29\xa8\x5e\xf7"
        "\xc2\x96\x11\x4b\x36\xf4\xc9\x8c\x8c\x8a\xac\xc2\x93\xe7\xf3\x35\xcc"
        "\x16\xe0\xb1\xe9\x90\x64\x4f\xe5\x0b\x25\x5e\xb8\x24\xd0\x1a\x89\x55"
        "\x50\xcd\x62\xb6\xe7\x65\xf8\x95\x26\xcc\x77\xf9\x18\x14\x86\xb1\x98"
        "\xfb\xad\x93\xfe\xeb\x16\x94\x25\x6b\x49\xa3\x62\x01\xd3\xb5\xc3\x08"
        "\x9f\x4a\xef\xce\x6d\xc8\x71\x9f\x36\x91\x4b\x6c\x0a\xa8\x72\xbe\x7d"
        "\xaa\xc5\x6d\xb0\xca\x22\xdb\x31\x53\xca\x77\xda\x62\xf9\x69\x5f\x23"
        "\xa0\x68\x19\x1a\x48\xe1\x6d\x66\x64\xbf\xad\x41\xf8\xc3\x0b\x60\x56"
        "\x38\xdd\x57\x22\x74\x32\x02\xc3\xa7\x93\x0e\xa2\xbf\x21\xff\xff\x00"
        "\x00\x00\x00\x00\x00\x0a\x3e\x19\xfd\x8f\xed\xcd\xaf\x1b\x98\x6c\x4f"
        "\xb3\x3f\xf7\x97\x5b\x0d\x66\x4c\x86\x46\xb7\xf4\x77\xeb\xd8\xbb\x65"
        "\x95\xf5\x31\x07\xa2\xd8\xb7\x4c\x8e\x99\x1a\x4f\xb4\xb4\xf6\xf9\x43"
        "\x0f\xee\x2f\x77\x29\x9e\xfe\x80\x65\xc0\x4a\x79\xe0\xcf\x5c\x41\x83"
        "\x6a\x80\xc3\xad\x99\x10\xe7\x96\xae\xf8\xac\xb6\xbf\x6b\x49\xb1\x8c"
        "\x9d\xcc\xfc\x31\x24\x8c\x15\x6d\x9c\xd0\x97\xe0\xc2\xd5\xec\xb6\xac"
        "\xb7\x75\xbd\x60\x75\x76\x33\xad\xa2\x7e\xba\x81\x0e\x8e\xe9\x72\xf4"
        "\x24\xa4\x56\x9f\xa3\x6b\x01\x00\x00\x00\x64\xd4\xf4\xb9\xea\xa9\xc3"
        "\xf3\x33\xfb\xd0\x04\x1e\xd9\x19\x7b\x79\xb6\x70\x91\xba\xd9\xa5\x04"
        "\x56\x31\x87\xf5\x70\xf1\xff\xf2\x14\x7d\xb5\xd8\x4b\x4b\xe2\xa2\x4c"
        "\x9a\xa0\xf6\x75\xcc\xc2\xbf\xcd\x29\x78\xfb\x0c\x51\x34\xe3\x8e\x2e"
        "\x1b\x15\x64\x52\xc7\x12\x3c\x2d\x01\x51\x73\x46\xf8\x5e\xaa\xf1\x5e"
        "\x06\x07\x62\x67\x64\xd9\xcb\xcf\xda\xeb\x6b\x86\x5c\x64\x4d\x5a\x60"
        "\xf2\x01\xed\x14\x23\x01\x0b\xb8\xbb\xd2\xf3\xa8\xd6\x61\x7c\x21\x9e"
        "\x67\x50\x5b\x66\x2d\x9f\x3c\x43\xff\xea\x0c\xae\x7d\xea\x30\x18\x93"
        "\x5b\xc2\xd7\x70\x54\x47\xc4\x9f\xd9\x2f\xf7\xb3\x5d\xd8\xb7\x96\xf8"
        "\x24\xa7\x7a\x8c\x1b\xf7\x01\xcd\x99\x17\x5d\x4c\x40\x64\x68\x55\x7c"
        "\xf5\xdc\x6c\x7d\x1d\x7e\xc4\xf9\xcb\x81\x34\xe9\xfe\x3a\x2f\x81\x57"
        "\x50\x7f\xc7\xf8\x68\xdc\x14\xff\xc8\x5f\x6f\x1e\x91\x29\xca\x37\x78"
        "\x26\x22\xce\x94\x5d\xaf\xd3\x0c\xa4\xf7\x7f\xfb\x02\xae\x92\xd1\xb5"
        "\xbd\x4f\xd0\x26\x5b\xad\xf6\xe2\x5f\x82\x67\x43\x72\xf1\x36\xf9\x93"
        "\xda\x50\xc4\x2c\x61\x9a\x47\x90\x9e\xc9\xb8\xad\x14\x07\x2e\xec\x93"
        "\x77\x08\x3e\xb7\xf1\xf3\xcb\xb4\x97\x32\x85\x32\xcb\x0f\xbd\x52\x12"
        "\x14\x1d\x4c\xfa\x4e\x46\x7c\xf1\xa7\xdc\x8e\xee\xb9\x7a\x77\xef\x89"
        "\x67\xa9\xde\xc8\xcd\x80\xe3\x13\xc4\x6f\x65\x46\xe0\xc1\xd6\x38\x0a"
        "\x0a\x61\x6f\xff\x0a\x74\xf6\x7a\x2a\xe2\x01\xbd\x03\x4b\x55\xd7\x15"
        "\x1f\xdd\xb6\x6a\xb8\x4d\xe2\xdf\xe9\x31\xc8\x56\x98\x7a\x88\x85\xce"
        "\xd3\x58\x3a\x77\xa0\xfa\xa8\xb7\xd7\x0d\xba\xd1\xb6\xa6\xdd\xf4\x73"
        "\xfe\xf8\x06\x4d\xf2\xa6\x11\x23\x2d\x97\xdf\x9d\x46\xac\x2a\x1c\x07"
        "\x24\x76\x23\x16\x95\xb2\xd9\xbb\xe8\x58\x89\x99\x21\xb3\x98\x88\xac"
        "\x36\x67\xdf\xd0\x20\x42\x69\xb7\x6e\x4d\x08\xc6\xb8\xa5\x92\x96\xa0"
        "\xd9\xf0\x8a\x16\xbd\x87\x21\x12\xc3\x93\x5a\x6c\x3b\x70\xdb\x92\xf3"
        "\x7a\x75\x41\x2d\xc7\x97\x5e\x94\x15\x0c\x05",
        810);
    *(uint64_t*)0x20000158 = 0xfffffffffffffed6;
    *(uint64_t*)0x20000160 = 0;
    *(uint64_t*)0x20000168 = 0;
    syscall(__NR_ioctl, (intptr_t)r[0], 0xc0306201, 0x20000140);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}