// https://syzkaller.appspot.com/bug?id=9426bc33ebdbac2dd67ecbd81da6b25091cfffd8
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <sched.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/resource.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>

#include <linux/capability.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 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;
}

static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
}

static void setup_common()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setsid();
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

static int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  setup_common();
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  setup_binderfs();
  loop();
  exit(1);
}

void loop(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  NONFAILING(memcpy((void*)0x20000000, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x20000480, "./bus\000", 6));
  NONFAILING(memcpy((void*)0x20000040, "jqfmt=vfsv0", 11));
  NONFAILING(*(uint8_t*)0x2000004b = 0x2c);
  NONFAILING(memcpy((void*)0x2000004c, "test_dummy_encryption", 21));
  NONFAILING(*(uint8_t*)0x20000061 = 0x2c);
  NONFAILING(*(uint8_t*)0x20000062 = 0);
  NONFAILING(memcpy(
      (void*)0x20000a40,
      "\x78\x9c\xec\xdc\x4d\x4f\x5c\xd5\x1b\x00\xf0\xe7\x5e\xa0\xcd\x9f\xf6\x2f"
      "\x55\xf1\x0d\x5b\x45\x5b\x5b\xb4\x0a\x42\x15\x35\x31\x4d\xd8\xb9\x20\xba"
      "\xd0\x85\xdb\x09\x50\x6c\xe4\x45\x0b\x26\xb6\x21\x06\x12\x17\x6e\x4d\xec"
      "\x07\xd0\xb8\xb5\x1f\xc1\x68\x13\x5f\x36\xba\x32\xdd\xaa\xd1\x85\x9a\x10"
      "\x53\x58\x34\xb1\x8b\x31\x77\xde\x18\xe8\x0c\xed\x28\xf4\x1a\xe6\xf7\x4b"
      "\xee\xf4\x9c\x3b\x67\x7a\xce\xbd\x4f\x9f\x3b\x77\x4e\x4f\x6e\x00\x6d\xab"
      "\x3f\x7b\x49\x22\x0e\x46\xc4\x0f\x11\xd1\x53\xae\x6e\x6e\xd0\x5f\xfe\x63"
      "\xfd\xea\xd2\x44\xb6\x25\x51\x2c\xbe\xfa\x67\x52\x6a\xb7\x76\x75\x69\xa2"
      "\xda\xb4\xfa\xb9\x03\xd9\x4b\x1a\x31\x90\x46\xa4\xef\x27\xf1\x60\x83\x7e"
      "\x17\xce\x5f\x78\xb3\x30\x33\x33\x75\xae\x52\x1f\x5a\x9c\x7d\x6b\x68\xe1"
      "\xfc\x85\xa7\xce\xce\x16\xa6\xa7\xa6\xa7\xe6\x86\x4f\x0d\x8f\x8e\x3e\xf7"
      "\xec\xf3\x23\xc3\xdb\x0d\xbf\xef\x60\x0b\xc7\xfa\xd2\xf7\xeb\xbf\x7e\xd2"
      "\xf9\xf2\xdc\xa7\x17\xd7\xe6\xae\x9d\x1e\xe9\xce\xc6\x5b\xfd\x7c\xfd\x71"
      "\xec\x94\xfe\xe8\xdf\x7c\x2e\xeb\x1c\xdf\xe9\xce\x72\x76\x4f\x5d\x39\xe9"
      "\xcc\x71\x20\xb4\xa4\x23\x22\xb2\x70\x75\x95\xf2\xbf\x27\x3a\x62\x23\x78"
      "\x3d\xf1\xcd\x4f\xb9\x0e\x0e\xd8\x55\xc5\xcc\xfe\xa6\x6f\x2f\x17\x81\x3d"
      "\x2c\x89\xbc\x47\x00\xe4\xa3\xfa\x45\x9f\xfd\xfe\xad\x6e\x0d\xee\x03\xfe"
      "\x2a\xee\xd6\x0d\x08\xb9\x5a\x1d\x2b\xff\x00\x5c\xab\xcc\xed\xac\xd7\xe2"
      "\xdf\x19\x69\xb9\xf0\xf6\xf1\xaf\xbe\xdc\xf4\xfb\x7e\x27\xf5\x47\xc4\xeb"
      "\xe3\xaf\x1c\xc9\xb6\xd8\xa5\x79\x18\x00\x00\x00\x80\x76\xf6\xc5\x58\x44"
      "\x3c\xd9\x68\xfe\x2f\x8d\x7b\xeb\xda\x65\xe5\xfb\x22\xe2\xfe\x88\x78\x20"
      "\x22\xfa\x22\x4a\xeb\x7a\x0e\x47\xc4\x91\x88\x78\x28\x22\x1e\xae\xae\x27"
      "\x6a\xc1\xd6\xf6\x5b\xe6\x7f\x9a\xff\xcf\x24\x3b\x62\x75\x2c\xe2\xc5\xba"
      "\xb5\x5d\xeb\x75\xf1\xaf\x38\xd4\x51\xa9\xfd\x3f\xab\x44\x57\x72\xe6\xec"
      "\xcc\xd4\xd3\x11\x71\x47\x44\x0c\x44\xd7\xfe\xac\xbe\xdd\x2a\xad\xd9\x37"
      "\x0a\xdf\x35\x7b\x6f\x63\xfe\xef\x72\x77\x79\xcf\xd2\x44\x75\x2e\xb0\x32"
      "\x8e\x3f\x3a\xb7\xfc\x2b\x98\x2c\x2c\x16\xfe\xf1\x01\xb3\xc9\xea\x4a\x44"
      "\x5f\x67\xa3\xf8\x27\xb5\x95\x40\x49\x44\x3c\x12\x11\x8f\xde\xca\x5f\xf8"
      "\x75\x69\x45\xdd\x74\xef\xa5\xeb\xb5\x5d\x2f\x7c\x70\xf7\x95\x66\xcd\xeb"
      "\xe7\x7f\xb3\x2d\xeb\x7f\x73\xfc\xd9\x4d\xc5\x8f\x23\x4e\x34\xcc\xff\x95"
      "\x5a\x9b\x64\xfb\xf5\x99\x43\xa5\xeb\xc1\x50\xf5\xaa\x70\xa3\x6f\x2f\x8e"
      "\x7e\xd6\xac\x7f\xf1\xcf\x57\x96\xff\xdd\x0d\xe3\x5f\x5b\xb9\x7a\x28\xa9"
      "\x5f\xaf\xbb\xd0\x7a\x1f\x97\x7b\x7f\xfe\xb1\xd9\x7b\xd7\x8b\xc5\xe2\xf6"
      "\xf1\x6f\x7c\xfd\xdf\x97\xbc\x56\x1a\xe0\xbe\xca\xbe\x77\x0b\x8b\x8b\xe7"
      "\x86\x23\xf6\x25\xe3\x37\xee\x1f\x69\x7d\xcc\x7b\x55\xf5\x7c\x54\xcf\x57"
      "\x16\xff\x81\xa3\x1b\xf1\xdf\x68\x99\xc6\x5d\x95\x52\x76\x42\x8f\x46\xc4"
      "\xb1\x88\x78\xac\xb2\x76\xf9\x44\xe9\xbb\x3f\xe2\xf1\x88\x78\x22\x22\x4e"
      "\x6e\xd3\xe7\xf2\xf4\x2f\x4d\xef\xe3\xe4\x7f\xbe\xb2\xf8\x4f\xb6\x94\xff"
      "\xad\x17\x7e\x5f\xf9\xf0\x58\xb3\xfe\x6f\x1e\xff\x2c\xff\x9f\x29\x0d\x66"
      "\xa0\xb2\xc7\xfd\xdf\xcd\xdd\x6a\x80\xf2\x1e\x27\x00\x00\x00\x00\x00\x00"
      "\x00\x3b\x23\x2d\x3d\x03\x2f\x49\x07\x6b\xe5\x34\x1d\x1c\x2c\x3f\xc3\xaf"
      "\x37\xba\xd3\x99\xf9\x85\xc5\x93\x67\xe6\xdf\x99\x9b\x2c\x3f\x2b\xef\x50"
      "\x74\xa5\xd5\x95\x5e\x3d\x75\xeb\x41\x87\x4b\xe5\x8d\xfa\xc8\x96\xfa\xa9"
      "\x88\xb8\x33\x22\x3e\xea\xf8\x5f\xa9\x3e\x38\x31\x3f\x33\x99\xf7\xc1\x43"
      "\x9b\x3b\xd0\x24\xff\x33\xbf\x75\xe4\x3d\x3a\x60\xd7\x79\x5e\x2b\xb4\x2f"
      "\xf9\x0f\xed\x4b\xfe\x43\xfb\x92\xff\xd0\xbe\xe4\x3f\xb4\x2f\xf9\x0f\xed"
      "\x4b\xfe\x43\xfb\xaa\xe4\xff\x72\xde\xe3\x00\x6e\xbf\xad\xdf\xff\xef\x5d"
      "\x19\x3f\x7d\xed\xf3\xc3\x97\x72\x1a\x0e\x70\x1b\xb9\xff\x87\xb6\xf4\x6f"
      "\x9e\xeb\xa7\xa0\xa0\xb0\x57\x0b\x79\x5f\x99\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\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\xfe\x1b\xfe"
      "\x0e\x00\x00\xff\xff\xef\x61\xd2\xa1",
      1107));
  NONFAILING(syz_mount_image(/*fs=*/0x20000000, /*dir=*/0x20000480,
                             /*flags=MS_NODIRATIME*/ 0x800, /*opts=*/0x20000040,
                             /*chdir=*/1, /*size=*/0x453, /*img=*/0x20000a40));
  NONFAILING(memcpy((void*)0x20000100, "./bus\000", 6));
  NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x20000100,
                             /*flags=MS_REC|MS_NODIRATIME*/ 0x4800, /*opts=*/0,
                             /*chdir=*/0, /*size=*/0, /*img=*/0x20000000));
  NONFAILING(memcpy((void*)0x200003c0, "./bus\000", 6));
  syscall(__NR_chdir, /*dir=*/0x200003c0ul);
  NONFAILING(memcpy((void*)0x20000280, "./file0\000", 8));
  syscall(__NR_mkdir, /*path=*/0x20000280ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x20000300, "./bus\000", 6));
  syscall(__NR_mkdir, /*path=*/0x20000300ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x20000440, "./file1\000", 8));
  syscall(__NR_mkdir, /*path=*/0x20000440ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x200000c0, "./bus\000", 6));
  NONFAILING(memcpy((void*)0x20000080, "overlay\000", 8));
  NONFAILING(memcpy((void*)0x20000500, "workdir", 7));
  NONFAILING(*(uint8_t*)0x20000507 = 0x3d);
  NONFAILING(memcpy((void*)0x20000508, "./bus", 5));
  NONFAILING(*(uint8_t*)0x2000050d = 0x2c);
  NONFAILING(memcpy((void*)0x2000050e, "lowerdir", 8));
  NONFAILING(*(uint8_t*)0x20000516 = 0x3d);
  NONFAILING(memcpy((void*)0x20000517, "./file0", 7));
  NONFAILING(*(uint8_t*)0x2000051e = 0x2c);
  NONFAILING(memcpy((void*)0x2000051f, "upperdir", 8));
  NONFAILING(*(uint8_t*)0x20000527 = 0x3d);
  NONFAILING(memcpy((void*)0x20000528, "./file1", 7));
  NONFAILING(*(uint8_t*)0x2000052f = 0x2c);
  NONFAILING(*(uint8_t*)0x20000530 = 0);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200000c0ul, /*type=*/0x20000080ul,
          /*flags=*/0ul, /*opts=*/0x20000500ul);
  NONFAILING(memcpy((void*)0x20000000, "./bus\000", 6));
  NONFAILING(memcpy((void*)0x200001c0, "./bus\000", 6));
  NONFAILING(memcpy((void*)0x200000c0, "incremental-fs\000", 15));
  syscall(__NR_mount, /*src=*/0x20000000ul, /*dst=*/0x200001c0ul,
          /*type=*/0x200000c0ul, /*flags=*/0ul, /*opts=*/0ul);
  NONFAILING(memcpy((void*)0x20000240, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x20000040, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x20000180, "incremental-fs\000", 15));
  syscall(__NR_mount, /*src=*/0x20000240ul, /*dst=*/0x20000040ul,
          /*type=*/0x20000180ul, /*flags=*/0ul, /*opts=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  install_segv_handler();
  do_sandbox_none();
  return 0;
}