// https://syzkaller.appspot.com/bug?id=47918174613db46c53bdf674594b8eb5db1881c5
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.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/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

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 use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

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;
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, MNT_DETACH | UMOUNT_NOFOLLOW))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int 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 reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDWR);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

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

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      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 < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  NONFAILING(memcpy((void*)0x20000280, "cgroup.controllers\000", 19));
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000280ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(memcpy((void*)0x200001c0, "cpuset.effective_cpus\000", 22));
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200001c0ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint32_t*)0x20000080 = 0);
  NONFAILING(*(uint32_t*)0x20000084 = r[0]);
  NONFAILING(*(uint64_t*)0x20000088 = 0);
  NONFAILING(*(uint64_t*)0x20000090 = 0);
  NONFAILING(*(uint64_t*)0x20000098 = 0);
  NONFAILING(*(uint64_t*)0x200000a0 = 0);
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc028660f, /*arg=*/0x20000080ul);
  NONFAILING(memcpy((void*)0x200004c0, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x20000500, "./bus\000", 6));
  NONFAILING(memcpy(
      (void*)0x20002400,
      "\x78\x9c\xec\xdd\x51\x4f\x5b\xd7\x1d\x00\xf0\xff\x35\x10\x08\x21\x81\x6c"
      "\x79\xd8\x26\x4d\xc9\xb6\x6c\xd9\x14\xc5\x06\x27\x41\x51\x9e\xb2\x97\x4d"
      "\x53\x14\x69\x5a\xb4\xa7\x3d\x24\x0c\x1c\x84\xb0\x31\xc2\x26\x0b\x2c\x0f"
      "\x44\xea\x47\xa8\xd4\x48\x7d\x6a\x3f\x42\x1f\x2a\xf5\xa1\x6a\x9e\xfa\xde"
      "\xb7\xf6\x03\xa4\x0f\x95\xd2\x36\x6a\x15\x2a\xf5\xc1\xd5\xbd\x36\x84\x10"
      "\x0c\xb4\x21\xb6\x8a\x7f\x3f\xe9\xe8\xde\x73\x8f\xf1\xff\x1c\xac\x7b\x8e"
      "\xf9\x03\x3e\x01\xf4\xac\x33\x11\xb1\x16\x11\x47\x22\xe2\x76\x44\x8c\xb6"
      "\xae\x27\xad\x12\xd7\x9a\x25\x7d\xdc\xb3\xa7\xf7\xa7\xd7\x9f\xde\x9f\x4e"
      "\xa2\xd1\xb8\xf9\x55\x92\xb5\xa7\xd7\x62\xcb\xd7\xa4\x8e\xb5\x9e\x73\x28"
      "\x22\xfe\xf5\xf7\x88\xff\x26\x2f\xc7\xad\xad\xac\xce\x4f\x95\xcb\xa5\xa5"
      "\x56\xbd\x50\xaf\x2c\x16\x6a\x2b\xab\x17\xe6\x2a\x53\xb3\xa5\xd9\xd2\x42"
      "\xb1\x38\x39\x31\x39\x7e\xe5\xe2\xe5\x62\xf3\x01\xb9\x57\x1f\xeb\xe9\xca"
      "\x7b\x4f\xfe\x36\x77\xfd\xdf\x1f\x7e\xf0\xdb\xc7\x9f\xac\xfd\xe5\xff\x69"
      "\xb7\x46\x5a\x6d\x5b\xc7\x71\x90\x9a\x43\x1f\xd8\x8c\x93\xea\x8f\x88\xeb"
      "\xaf\x23\x58\x17\xf4\xb5\xc6\x73\xa4\xdb\x1d\xe1\x27\x49\x6f\xab\x5f\x44"
      "\xc4\xef\xb3\xfb\x7f\x34\xfa\xb2\x57\x13\x00\x38\xcc\x1a\x8d\xd1\x68\x8c"
      "\x6e\xad\x03\x00\x87\x5d\x2e\xcb\x81\x25\xb9\x7c\x2b\x17\x30\x12\xb9\x5c"
      "\x3e\xdf\xcc\xe1\x9d\x8a\xe1\x5c\xb9\x5a\xab\x9f\xbf\x53\x5d\x5e\x98\x69"
      "\xe6\xca\xc6\x62\x20\x77\x67\xae\x5c\x1a\x6f\xe5\x0a\xc7\x62\x20\x49\xeb"
      "\x13\xd9\xf9\xf3\x7a\x71\x5b\xfd\x62\x44\x9c\x8c\x88\x37\x07\x8f\x66\xf5"
      "\xfc\x74\xb5\x3c\xd3\xcd\x37\x3e\x00\xd0\xc3\x8e\x6d\x5b\xff\xbf\x1d\x6c"
      "\xae\xff\x00\xc0\x21\x37\xd4\xed\x0e\x00\x00\x1d\x67\xfd\x07\x80\xde\x63"
      "\xfd\x07\x80\xde\x63\xfd\x07\x80\xde\x63\xfd\x07\x80\xde\x63\xfd\x07\x80"
      "\xde\x63\xfd\x07\x80\x9e\xf2\xcf\x1b\x37\xd2\xd2\x58\x6f\x7d\xfe\xf5\xcc"
      "\xdd\x95\xe5\xf9\xea\xdd\x0b\x33\xa5\xda\x7c\xbe\xb2\x3c\x9d\x9f\xae\x2e"
      "\x2d\xe6\x67\xab\xd5\xd9\xec\x33\x7b\x2a\x7b\x3d\x5f\xb9\x5a\x5d\x9c\xb8"
      "\x14\xcb\xf7\x0a\xf5\x52\xad\x5e\xa8\xad\xac\xde\xaa\x54\x97\x17\xea\xb7"
      "\xb2\xcf\xf5\xbe\x55\x1a\xe8\xc8\xa8\x00\x80\xdd\x9c\x3c\xfd\xe8\xb3\x24"
      "\x22\xd6\xae\x1e\xcd\x4a\x6c\xd9\xcb\xc1\x5a\x0d\x87\xdb\x01\x6c\xab\x03"
      "\xfc\x4c\xf5\x75\xbb\x03\x40\xd7\xd8\xed\x0b\x7a\x97\x9f\xf1\x81\x1d\xb6"
      "\xe8\x7d\x41\xdb\x3f\x11\x7a\x78\xf0\x7d\x01\x3a\xe3\xdc\xaf\xe5\xff\xa1"
      "\x57\xc9\xff\x43\xef\x92\xff\x87\xde\x25\xff\x0f\xbd\xab\xd1\x48\xec\xf9"
      "\x0f\x00\x3d\x46\x8e\x1f\xf0\xfb\x7f\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xf8\xf1\x46"
      "\xb2\x92\xe4\xf2\xad\xbd\xc0\x47\x22\x97\xcb\xe7\x23\x8e\x47\xc4\x58\x0c"
      "\x24\x77\xe6\xca\xa5\xf1\x88\x38\x11\x11\x9f\x0e\x0e\x0c\xa6\xf5\x89\x6e"
      "\x77\x1a\x00\x78\x45\xb9\x2f\x92\xd6\xfe\x5f\xe7\x46\xcf\x8e\x6c\x6f\x3d"
      "\x92\x7c\x37\x98\x1d\x23\xe2\x7f\x6f\xdf\x7c\xeb\xde\x54\xbd\xbe\x34\x91"
      "\x5e\xff\x7a\xf3\x7a\xfd\x61\xeb\x7a\xb1\x1b\xfd\x07\x00\xf6\xb2\xb1\x4e"
      "\x6f\xac\xe3\x1b\x9e\x3d\xbd\x3f\xbd\x51\x3a\xd9\x9f\x27\x7f\x6d\x6e\x2e"
      "\x9a\xc6\x5d\x6f\x95\x66\x4b\x7f\xf4\x67\xc7\xa1\x18\x88\x88\xe1\x6f\x92"
      "\x56\xbd\x29\x7d\xbf\xd2\x77\x00\xf1\xd7\x1e\x44\xc4\xaf\x76\x1a\x7f\x92"
      "\xe5\x46\xc6\x5a\x3b\x9f\x6e\x8f\x9f\xc6\x3e\xde\xd1\xf8\xb9\x17\xe2\xe7"
      "\xb2\xb6\xe6\x31\xfd\x5e\xfc\xf2\x00\xfa\x02\xbd\xe6\x51\x3a\xff\x5c\xdb"
      "\xe9\xfe\xcb\xc5\x99\xec\xb8\xf3\xfd\x3f\x94\xcd\x50\xaf\x6e\x63\xfe\x5b"
      "\x7f\x69\xfe\xcb\x6d\xce\x7f\x7d\x6d\xe6\xbf\x33\xfb\x8d\x71\xe9\xe3\x7f"
      "\xb4\x6d\x7b\x10\xf1\x9b\xfe\x9d\xe2\x27\x9b\xf1\x93\x36\xf1\xcf\xee\x33"
      "\x7e\xfe\xa3\x37\xfe\xd8\xae\xad\xf1\x4e\xc4\xb9\xd8\x39\xfe\xd6\x58\x85"
      "\x7a\x65\xb1\x50\x5b\x59\xbd\x30\x57\x99\x9a\x2d\xcd\x96\x16\x8a\xc5\xc9"
      "\x89\xc9\xf1\x2b\x17\x2f\x17\x0b\x59\x8e\xba\xb0\x91\xa9\x7e\xd9\x97\x57"
      "\xcf\x9f\xd8\x6d\xfc\xc3\x6d\xe2\x0f\xed\x31\xfe\xb6\x83\xda\xe6\xdd\xef"
      "\x6f\xff\xe7\x77\xbb\xc4\xff\xf3\x1f\x76\x7e\xfd\x4f\xed\x12\x3f\x5d\x13"
      "\xff\xb4\xcf\xf8\x53\xc3\xef\xb7\xdd\xbe\x3b\x8d\x3f\xd3\x66\xfc\x7b\xbd"
      "\xfe\xe7\xf7\x19\xff\xf1\xe7\xab\x33\xfb\x7c\x28\x00\xd0\x01\xb5\x95\xd5"
      "\xf9\xa9\x72\xb9\xb4\xe4\xa4\x53\x27\xe9\x5b\xb7\xd7\x19\xe2\x41\xb7\x07"
      "\xe8\xe4\x30\x9c\x74\x7b\x66\x02\x5e\xb7\xe7\x37\x7d\xb7\x7b\x02\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb4\xd3\x89\x7f\x27\xea\xf6\x18\x01"
      "\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\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\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\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\x38\xbc\x7e\x08\x00\x00\xff\xff\x21\x9e\xd7\xff",
      1205));
  NONFAILING(syz_mount_image(/*fs=*/0x200004c0, /*dir=*/0x20000500, /*flags=*/0,
                             /*opts=*/0x20000180, /*chdir=*/0x21,
                             /*size=*/0x4b5, /*img=*/0x20002400));
  NONFAILING(memcpy((void*)0x200016c0, "./bus\000", 6));
  NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x200016c0, /*flags=*/0,
                             /*opts=*/0, /*chdir=*/0, /*size=*/0, /*img=*/0));
  NONFAILING(memcpy((void*)0x20000040, "./bus/file0\000", 12));
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20000040ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x20000340, "./bus/file0\000", 12));
  NONFAILING(memcpy((void*)0x20000400, "security.apparmor\000", 18));
  NONFAILING(memcpy((void*)0x200003c0, "overlay\023", 8));
  syscall(__NR_setxattr, /*path=*/0x20000340ul, /*name=*/0x20000400ul,
          /*val=*/0x200003c0ul, /*size=*/0xe407ul, /*flags=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  install_segv_handler();
  use_temporary_dir();
  loop();
  return 0;
}