// https://syzkaller.appspot.com/bug?id=a233f390d878f6525f60f0b15802432bd9e1fb6f
// 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 <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 long syz_open_dev(long a0, long a1, 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) {
  }
}

#define SYZ_HAVE_SETUP_TEST 1
static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
}

#define SYZ_HAVE_RESET_TEST 1
static void reset_test()
{
  int fd;
  for (fd = 3; fd < 30; fd++)
    close(fd);
}

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();
      reset_test();
      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_memfd_create
#define __NR_memfd_create 356
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  long res = 0;
  memcpy((void*)0x20000140, "/dev/loop#", 11);
  res = syz_open_dev(0x20000140, 0, 0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x20000000 = 0;
  *(uint32_t*)0x20000004 = 0;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0;
  *(uint32_t*)0x20000010 = 0;
  *(uint32_t*)0x20000014 = 0;
  *(uint32_t*)0x20000018 = 0;
  *(uint32_t*)0x2000001c = 8;
  memcpy((void*)0x20000020,
         "\x71\x0f\xe4\xef\xfd\xe6\xaf\x41\x92\x04\xdf\x0b\xed\x11\x0d\x23\xeb"
         "\x5f\xa3\x42\x51\x01\x99\x91\x59\xfc\x27\x48\x3d\x18\xf4\xf5\xbb\x8e"
         "\xd8\xb6\x32\x08\x3a\xb6\x69\x1f\x31\x9b\x38\xf7\x0a\xd6\x65\x0d\x4e"
         "\x18\xb0\x1f\x63\x04\x11\xf3\x1d\x74\x0c\x06\x9b\x54",
         64);
  memcpy((void*)0x20000060, "\xb2\xe8\xeb\x0b\xa8\x26\xd8\x88\x77\x63\x85\x9f"
                            "\xb7\x51\x11\x47\x76\xaf\x1e\x80\xcd\x0a\x5d\x25"
                            "\x4e\x44\xda\x72\x1e\xa6\x6e\xe3",
         32);
  *(uint32_t*)0x20000080 = 0;
  *(uint32_t*)0x20000084 = 0;
  *(uint32_t*)0x20000088 = 0;
  syscall(__NR_ioctl, (long)r[0], 0x4c02, 0x20000000);
  memcpy((void*)0x20000140, "/dev/loop#", 11);
  res = syz_open_dev(0x20000140, 0, 0x100082);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000380,
         "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x76\x8e"
         "\x05\xf7\xc1\x55\xad\x7d\xc6\x94\x7c\x57\x3e\x5a\x69\x24\x4e\x76\x38"
         "\x2c\x0a\xa6\x3d\x57\x5e\xa3\x59\x7f\x8b\x17\x28\x27\x7e\xf7\x6b\x30"
         "\x54\x4d\x7b\xa9\x2d\xcf\x97\x8f\x1f\x81\xdc\x1b\x7f\x8f\x7b\x34\x51"
         "\xda\xda\x02\xec\xb4\xf1\xdd\xcc\x8b\x52\x41\xda\x89\x45\x66\x6e\x00"
         "\x73\xc2\x5a\x62\x01\x00\x4d\xbe\xa3\x7a\xab\xd3\xeb\x98\x88\xc4\xc6"
         "\x29\x41\x9f\x50\x93\x7a\x68\x48\xe0\xd2\x81\xdb\xee\x56\x8c\x4d\xe9"
         "\xa0\x36\xc2\x6f\x19\x22\xf6\x49\x71\xd4\xdf\x97\xfb\xab\x04\xe8\xce"
         "\x49\x38\xb3\x1d\xcf\x25\x9b\x4b\xc6\x09\x01\xe1\x86\x61\xfa\xb8\xfb"
         "\x29\x88\xcd\x2b\xc2\x60\xc2\xf5\x72\x35\x3e\x6b\xb0\xa0\x02\xfc\x16"
         "\x4d\x4f\x18\x9b\x06\x80\x62\xd1\x01\x00\x00\x00\x00\x00\x00\x00\x40"
         "\x0c\x0c\x4c\xa5\x7b\x54\x6b\x94\x30\x17\x2e\xa5\x36\x2e\xe0\x14\x1b"
         "\x3d\xf0\x6a\xd2\x35\xe8\x15\xd8\x9e\xea\xd3\xd9\x47\x34\x09\xc0\x9c"
         "\x2e\x27\xa9\x52\x33\x7a\x24\xf2\x01\x88\xc0\x13\x12\x3c\xc0\x31\x6a"
         "\x33\xd8\xb4\x43\x45\x37\x73\xe4\xa0\x9e\xdd\x80\x31\x12\x4d\xee\x13"
         "\xce\x9c\x75\x28\x8f\x2e\xc8\x33\xc7\xe6\x6a\xf5\xb1\x9a\x00\x00\x00"
         "\x00\x00\x00\x00",
         276);
  res = syscall(__NR_memfd_create, 0x20000380, 0);
  if (res != -1)
    r[2] = res;
  syscall(__NR_ioctl, (long)r[1], 0x4c00, (long)r[2]);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  loop();
  return 0;
}