// 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 <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>

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 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");
}

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_one(void)
{
  intptr_t res = 0;
  memcpy((void*)0x20000100, "/dev/binder#\000", 13);
  res = syz_open_dev(0x20000100, 0, 0);
  if (res != -1)
    r[0] = res;
  *(uint64_t*)0x200005c0 = 0x44;
  *(uint64_t*)0x200005c8 = 0;
  *(uint64_t*)0x200005d0 = 0x20000140;
  memcpy((void*)0x20000140,
         "\x00\x63\x40\x40\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\x00\x00\x00\x00\x00\x00\xdb"
         "\xc4\xc5\x24\xef\x1b\x64\x17\x4c\x5d\xcd\x49\x9d\x95\xec\x13\x4c\x55"
         "\x28\x45\x37\x34\x7c\x52\xe0\x56\xf0\xb2\x85\xd4\xa1\xf4\xaf\x6d\x7d"
         "\xe7\x21\x12\x8a\xa0\x0d\x72\x8d\x8f\x10\x7b\xaf\xb4\xb8\x43\x25\xa1"
         "\x12\xed\xea\xd4\x45\x85\xe3\x36\xc7\x66\x16\x84\x09\xe2\x0e\x0e\xf7"
         "\x0f\x00\x2d\xc4\xcc\x3a\x5c\x24\x00\x00\x00\x00\x00\x00\x00\x00\xb5"
         "\x1f\xc1\xbc\x45\x55\x0e\x67\xdf\xf7\x87\xc7\xd3\xe5\xb9\x83\xe7\xce"
         "\x0e\xb0\xd2\x8d\xc2\x1d\x96\x68\xdb\x82\x67\x80\x00\x1c\x8d\x58\x27"
         "\x4f\x7d\xd2\x1d\x57\xbf\xc5\x04\x0e\xf1\x67\x29\x68\x3a\x57\xc9\x03"
         "\xa6\xce\x8d\x0b\x72\x72\x87\xe8\xf2\x09\xcf\xc5\x51\xbb\xab\x45\xd9"
         "\x7d\x6a\x5f\x88\xe2\x87\x25\xf5\xd8\x43\x04\xb3\x75\x76\xd0\xcf\x1f"
         "\x8f\xfa\x9d\x9e\x6f\x0c\x46\x33\xad\xad\xa8\x45\x5f\x4e\xa8\x1d\xfd"
         "\xfd\x86\x00\xbb\x9e\x00\x87\xe3\x0e\x3a\x71\x72\x9c\x0b\xa6\xff\x5c"
         "\x97\xec\xff\x53\x23\xd2\xe8\x10\xdd\x55\x63\x58\xd7\x0e\x4a\xd2\xca"
         "\xf0\x46\x1f\xd6\xbf\x78\x01\xe2\x81\x81\x8c\xbc\xef\x03\x83\x7d\x8c"
         "\x5b\xe5\xe2\x17\x1e\x98\xa5\xda\xdc\xeb\xed\x2f\x66\x72\x6d\x27\x6a"
         "\xb4\x78\xdb\x26\x1c",
         311);
  *(uint64_t*)0x200005d8 = 0;
  *(uint64_t*)0x200005e0 = 0;
  *(uint64_t*)0x200005e8 = 0;
  syscall(__NR_ioctl, (intptr_t)r[0], 0xc0306201, 0x200005c0);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}