// https://syzkaller.appspot.com/bug?id=b3d4ed3e41b3085ce97f4504f4183e3f99115fb2
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#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 <time.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/loop.h>

#ifndef __NR_fsconfig
#define __NR_fsconfig 431
#endif
#ifndef __NR_fspick
#define __NR_fspick 433
#endif
#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;
}

#define MAX_FDS 30

//% 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 setup_gadgetfs();
static void setup_binderfs();
static void setup_fusectl();
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 (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/newroot/syz-inputs", 0700))
    exit(1);
  if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL,
            bind_mount_flags | MS_RDONLY, NULL) &&
      errno != ENOENT)
    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);
  setup_gadgetfs();
  setup_binderfs();
  setup_fusectl();
}

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

static void setup_fusectl()
{
  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)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  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);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 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, umount_flags) == 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, umount_flags))
        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, umount_flags))
          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 close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

static const char* setup_binfmt_misc()
{
  if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0) &&
      errno != EBUSY) {
    return NULL;
  }
  if (!write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz0:M:0:\x01::./file0:") ||
      !write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz1:M:1:\x02::./file0:POC"))
    return "write(/proc/sys/fs/binfmt_misc/register) failed";
  return NULL;
}

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();
      close_fds();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      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;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  NONFAILING(memcpy((void*)0x200000000140, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x2000000005c0, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000380, "test_dummy_encryption", 21));
  NONFAILING(*(uint8_t*)0x200000000395 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000396, "debug_want_extra_isize", 22));
  NONFAILING(*(uint8_t*)0x2000000003ac = 0x3d);
  NONFAILING(sprintf((char*)0x2000000003ad, "0x%016llx", (long long)0x84));
  NONFAILING(*(uint8_t*)0x2000000003bf = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003c0, "stripe", 6));
  NONFAILING(*(uint8_t*)0x2000000003c6 = 0x3d);
  NONFAILING(sprintf((char*)0x2000000003c7, "0x%016llx", (long long)7));
  NONFAILING(*(uint8_t*)0x2000000003d9 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003da, "commit", 6));
  NONFAILING(*(uint8_t*)0x2000000003e0 = 0x3d);
  NONFAILING(sprintf((char*)0x2000000003e1, "0x%016llx", (long long)5));
  NONFAILING(*(uint8_t*)0x2000000003f3 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003f4, "orlov", 5));
  NONFAILING(*(uint8_t*)0x2000000003f9 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000003fa, "barrier", 7));
  NONFAILING(*(uint8_t*)0x200000000401 = 0x3d);
  NONFAILING(sprintf((char*)0x200000000402, "0x%016llx", (long long)5));
  NONFAILING(*(uint8_t*)0x200000000414 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000415, "max_batch_time", 14));
  NONFAILING(*(uint8_t*)0x200000000423 = 0x3d);
  NONFAILING(sprintf((char*)0x200000000424, "0x%016llx", (long long)0));
  NONFAILING(*(uint8_t*)0x200000000436 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000437, "data_err=abort", 14));
  NONFAILING(*(uint8_t*)0x200000000445 = 0x2c);
  NONFAILING(*(uint8_t*)0x200000000446 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000c00,
      "\x78\x9c\xec\xdd\xcf\x6f\x14\x55\x1c\x00\xf0\xef\x6c\x7f\xd0\x52\xb4\x85"
      "\x18\x15\x0f\xd2\xc4\x18\x48\x94\x96\x16\x30\xc4\x78\x80\xab\x21\x0d\xfe"
      "\x88\x17\x2f\x56\x5a\x10\x29\xd0\xd0\x1a\x2d\x9a\x50\x12\xbc\x98\x18\x2f"
      "\xc6\x98\x78\xf2\x20\xfe\x17\x4a\xe4\xca\x49\x4f\x1e\xbc\x78\x32\x24\x44"
      "\x0d\x47\x13\xd7\xcc\x76\xa6\x74\xdb\xd9\x96\x2e\x6d\xa7\x32\x9f\x4f\xb2"
      "\xf4\xcd\x7b\x3b\xbc\x37\xdd\x7e\xfb\xde\xbe\xbe\x37\x1b\x40\x65\x0d\xa6"
      "\xff\xd4\x22\xf6\x46\xc4\x74\x12\xd1\x9f\xcc\x2f\x96\x75\x46\x56\x38\xb8"
      "\xf0\xbc\x7b\x7f\x7f\x72\x3a\x7d\x24\x51\xaf\xbf\xf1\x67\x12\x49\x96\x97"
      "\x3f\x3f\xc9\xbe\xf6\x65\x27\xf7\x44\xc4\xcf\x3f\x25\xb1\xa7\x63\x65\xbd"
      "\x33\x73\x57\xce\x8f\x4f\x4d\x4d\x5e\xce\x8e\x87\x67\x2f\x4c\x0f\xcf\xcc"
      "\x5d\x39\x78\xee\xc2\xf8\xd9\xc9\xb3\x93\x17\x47\x5f\x1a\x3d\x76\xf4\xc8"
      "\xd1\x63\x23\x87\xda\xba\xae\xab\x05\x79\x27\xaf\xbf\xff\x61\xff\x67\x63"
      "\x6f\x7f\xf7\xcd\x3f\xc9\xc8\xf7\xbf\x8d\x25\x71\x3c\x5e\xcd\x9e\xb8\xf4"
      "\x3a\x36\xca\x60\x0c\x36\xbe\x27\xc9\xca\xa2\xbe\x63\x1b\x5d\x59\x49\x3a"
      "\xb2\x9f\x93\xa5\x2f\x71\xd2\x59\x62\x83\x58\x97\xfc\xf5\xeb\x8a\x88\xa7"
      "\xa2\x3f\x3a\xe2\xfe\x8b\xd7\x1f\x9f\xbe\x56\x6a\xe3\x80\x4d\x55\x4f\x22"
      "\xea\x40\x45\x25\xe2\x1f\x2a\x2a\x1f\x07\xe4\xef\xed\x97\xbf\x0f\xae\x95"
      "\x32\x2a\x01\xb6\xc2\xdd\x13\x0b\x13\x00\x2b\xe3\xbf\x73\x61\x6e\x30\x7a"
      "\x1a\x73\x03\x3b\xef\x25\xb1\x74\x5a\x27\x89\x88\xf6\x66\xe6\x9a\xed\x8a"
      "\x88\xdb\xb7\xc6\xae\x9f\xb9\x35\x76\x3d\x36\x69\x1e\x0e\x28\x36\x7f\x2d"
      "\x22\x9e\x2e\x8a\xff\xa4\x11\xff\x03\xd1\x13\x03\x8d\xf8\xaf\x35\xc5\x7f"
      "\x3a\x2e\x38\x95\x7d\x4d\xf3\x5f\x6f\xb3\xfe\xe5\x53\xc5\xe2\x1f\xb6\xce"
      "\x42\xfc\xf7\xac\x1a\xff\xd1\x22\xfe\xdf\x59\x12\xff\xef\xb6\x59\xff\xe0"
      "\xfd\xe4\x7b\xbd\x4d\xf1\xdf\xdb\xee\x25\x01\x00\x00\x00\x00\x00\x40\x65"
      "\xdd\x3c\x11\x11\x2f\x16\xfd\xfd\xbf\xb6\xb8\xfe\x27\x0a\xd6\xff\xf4\x45"
      "\xc4\xf1\x0d\xa8\x7f\x70\xd9\xf1\xca\xbf\xff\xd7\xee\x6c\x40\x35\x40\x81"
      "\xbb\x27\x22\x5e\x29\x5c\xff\x5b\xcb\x57\xff\x0e\x74\x64\xa9\xc7\x1a\xeb"
      "\x01\xba\x92\x33\xe7\xa6\x26\x0f\x45\xc4\xe3\x11\x71\x20\xba\x76\xa4\xc7"
      "\x23\xab\xd4\x71\xf0\xf3\x3d\x5f\xb7\x2a\x1b\xcc\xd6\xff\xe5\x8f\xb4\xfe"
      "\xdb\xd9\x5a\xc0\xac\x1d\x77\x3a\x77\x34\x9f\x33\x31\x3e\x3b\xfe\xb0\xd7"
      "\x0d\x44\xdc\xbd\x16\xf1\x4c\xe1\xfa\xdf\x64\xb1\xff\x4f\x0a\xfa\xff\xf4"
      "\xf7\xc1\xf4\x03\xd6\xb1\xe7\xf9\x1b\xa7\x5a\x95\xad\x1d\xff\xc0\x66\xa9"
      "\x7f\x1b\xb1\xbf\xb0\xff\xbf\x7f\xd7\x8a\x64\xf5\xfb\x73\x0c\x37\xc6\x03"
      "\xc3\xf9\xa8\x60\xa5\x67\x3f\xfe\xe2\x87\x56\xf5\xb7\x1b\xff\x6e\x31\x01"
      "\x0f\x2f\xed\xff\x77\xae\x1e\xff\x03\xc9\xd2\xfb\xf5\xcc\xac\xbf\x8e\xc3"
      "\x73\x9d\xf5\x56\x65\xed\x8e\xff\xbb\x93\x37\x1b\xb7\x9c\xe9\xce\xf2\x3e"
      "\x1a\x9f\x9d\xbd\x3c\x12\xd1\x9d\x9c\xec\x48\x73\x9b\xf2\x47\xd7\xdf\x66"
      "\x78\x14\xe5\xf1\x90\xc7\x4b\x1a\xff\x07\x9e\x5b\x7d\xfe\xaf\x68\xfc\xdf"
      "\x1b\x11\xf3\xcb\xfe\xef\xe4\xaf\xe6\x3d\xc5\xb9\x27\xff\xed\xfb\xbd\x55"
      "\x7b\x8c\xff\xa1\x3c\x69\xfc\x4f\xac\xab\xff\x5f\x7f\x62\xf4\xc6\xc0\x8f"
      "\xad\xea\x7f\xb0\xfe\xff\x48\xa3\xaf\x3f\x90\xe5\x98\xff\x83\x05\x5f\xe5"
      "\x61\xda\xdd\x9c\x5f\x10\x8e\x9d\x45\x45\x5b\xdd\x5e\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x78\x14\xd4\x22\x62\x57\x24\xb5\xa1\xc5\x74\xad\x36\x34\x14\xd1"
      "\x17\x11\x4f\xc4\xce\xda\xd4\xa5\x99\xd9\x17\xce\x5c\xfa\xe0\xe2\x44\x5a"
      "\xd6\xf8\xfc\xff\x5a\xfe\x49\xbf\xfd\x0b\xc7\x49\xfe\xf9\xff\x03\x4b\x8e"
      "\x47\x97\x1d\x1f\x8e\x88\xdd\x11\xf1\x65\x47\x6f\xe3\x78\xe8\xf4\xa5\xa9"
      "\x89\xb2\x2f\x1e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xb6\x89\xbe\x16\xfb\xff\x53\x7f\x74\x94\xdd\x3a\x60\xd3\x75\x96\xdd"
      "\x00\xa0\x34\x05\xf1\xff\x4b\x19\xed\x00\xb6\x9e\xfe\x1f\xaa\x4b\xfc\x43"
      "\x75\x89\x7f\xa8\x2e\xf1\x0f\xd5\x25\xfe\xa1\xba\xc4\x3f\x54\x97\xf8\x87"
      "\xea\x12\xff\x00\x00\x00\x00\x00\xf0\x48\xd9\xbd\xef\xe6\xaf\x49\x44\xcc"
      "\xbf\xdc\xdb\x78\xa4\xba\xb3\xb2\xae\x52\x5b\x06\x6c\xb6\x5a\xd9\x0d\x00"
      "\x4a\xe3\x16\x3f\x50\x5d\x96\xfe\x40\x75\x79\x8f\x0f\x24\x6b\x94\xf7\xb4"
      "\x3c\x69\xad\x33\x57\x33\x7d\xfa\x21\x4e\x06\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x80\xca\xd9\xbf\xd7\xfe\x7f\xa8\x2a\xfb\xff\xa1\xba\xec\xff\x87"
      "\xea\xca\xf7\xff\xef\x2b\xb9\x1d\xc0\xd6\xf3\x1e\x1f\x88\x35\x76\xf2\x17"
      "\xee\xff\x5f\xf3\x2c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x60\x23\xcd"
      "\xcc\x5d\x39\x3f\x3e\x35\x35\x79\x59\xe2\xad\xed\xd1\x8c\xad\x4c\xd4\xeb"
      "\xf5\xab\xe9\x4f\xc1\x76\x69\xcf\xff\x3c\x91\x2f\x85\xdf\x2e\xed\x59\x96"
      "\xc8\xf7\xfa\x3d\xd8\x59\xe5\xfd\x4e\x02\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x9a\xfd\x17\x00\x00\xff\xff\x16\x12"
      "\x24\xc5",
      1496));
  NONFAILING(syz_mount_image(/*fs=*/0x200000000140, /*dir=*/0x2000000005c0,
                             /*flags=MS_REC*/ 0x4000, /*opts=*/0x200000000380,
                             /*chdir=*/0xd, /*size=*/0x5d8,
                             /*img=*/0x200000000c00));
  NONFAILING(memcpy((void*)0x200000000100, "./bus\000", 6));
  NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x200000000100,
                             /*flags=MS_REC|MS_NODIRATIME*/ 0x4800, /*opts=*/0,
                             /*chdir=*/0, /*size=*/0, /*img=*/0x200000000000));
  NONFAILING(memcpy((void*)0x2000000000c0, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x2000000001c0, "./bus\000", 6));
  NONFAILING(*(uint8_t*)0x200000000080 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000f40,
      "\x78\x9c\xec\xdd\x5f\x6b\x2c\x67\x19\x00\xf0\x67\x36\xbb\xc7\x93\x73\x72"
      "\x9a\x54\xbd\xd0\x82\xb5\xda\x4a\xce\x41\xcf\x6e\xd2\xd8\x36\x78\x51\x2b"
      "\x88\x5e\x15\xd4\x7a\x5f\x63\xb2\x09\x21\x9b\x6c\xc8\x6e\xda\x93\x50\x4c"
      "\x0e\x7e\x00\x41\x44\x05\xaf\xf4\xc6\x1b\xc1\x0f\x20\x48\xc1\x1b\x2f\x45"
      "\x28\xe8\xb5\xa2\xa2\x88\x9e\xea\x85\x17\xda\x91\xd9\x9d\x4d\x73\x92\xfd"
      "\xd7\x76\x93\x4d\x93\xdf\x0f\x26\xf3\xbe\x33\xef\xcc\xf3\xbc\x1b\x66\x76"
      "\x66\x67\x98\x09\xe0\xca\x7a\x22\x22\x5e\x88\x88\xb7\xd2\x34\xbd\x13\x11"
      "\xd3\xf9\xf4\x42\x3e\xc4\x61\x7b\xc8\xda\xbd\xf9\xe0\xb5\xe5\x6c\x48\x22"
      "\x4d\x5f\xfa\x47\x12\x49\x3e\xad\xb3\xae\x24\x1f\xdf\xcc\x17\xbb\x1e\x11"
      "\x5f\xfb\x72\xc4\x37\x93\xd3\x71\x1b\x7b\xfb\x1b\x4b\xb5\x5a\x75\x27\xaf"
      "\x57\x9a\x9b\xdb\x95\xc6\xde\xfe\xdd\xf5\xcd\xa5\xb5\xea\x5a\x75\x6b\x61"
      "\x61\xfe\xd9\xc5\xe7\x16\x9f\x59\x9c\x1b\x49\x3f\x6f\x45\xc4\xf3\x5f\xfc"
      "\xcb\xf7\xbf\xf3\xd3\x2f\x3d\xff\xcb\xcf\xbc\xfa\xc7\x97\xff\x76\xfb\x5b"
      "\x59\x5a\x53\xf9\xfc\xe3\xfd\x78\x87\x8a\xfd\x66\xb6\xbb\x5e\x6a\x7d\x16"
      "\xc7\x17\xd8\x79\x97\xc1\x2e\xa2\x62\xab\x87\xb9\xc9\x6e\x2d\x26\x4e\x4d"
      "\xb9\x7f\xc6\x39\x01\x00\xd0\x5d\x76\x8c\xff\xc1\x88\xf8\x64\x44\xdc\x89"
      "\xe9\x98\xe8\x7f\x38\x0b\x00\x00\x00\xbc\x0f\xa5\x9f\x9f\x8a\xff\x26\x11"
      "\x69\x77\xd7\x7a\x4c\x07\x00\x00\x00\xde\x47\x0a\xad\x7b\x60\x93\x42\x39"
      "\xbf\x17\x60\x2a\x0a\x85\x72\xb9\x7d\x0f\xef\x87\xe3\x46\xa1\x56\x6f\x34"
      "\x3f\xbd\x5a\xdf\xdd\x5a\x69\xdf\x2b\x3b\x13\xa5\xc2\xea\x7a\xad\x3a\x97"
      "\xdf\x2b\x3c\x13\xa5\x24\xab\xcf\xb7\xca\x6f\xd7\x9f\x3e\x51\x5f\x88\x88"
      "\x47\x23\xe2\x7b\xd3\x93\xad\x7a\x79\xb9\x5e\x5b\x19\xf7\x8f\x1f\x00\x00"
      "\x00\x70\x45\xdc\x3c\x71\xfe\xff\xef\xe9\xf6\xf9\x7f\xc7\xc1\x38\x93\x03"
      "\x00\x00\x00\x46\x67\x66\xdc\x09\x00\x00\x00\x00\x67\x6e\xd8\xf3\xff\x1b"
      "\x67\x9c\x07\x00\x00\x00\x70\x76\x5c\xff\x07\x00\x00\x80\x4b\xed\x2b\x2f"
      "\xbe\x98\x0d\x69\xe7\xfd\xd7\x2b\xaf\xec\xed\x6e\xd4\x5f\xb9\xbb\x52\x6d"
      "\x6c\x94\x37\x77\x97\xcb\xcb\xf5\x9d\xed\xf2\x5a\xbd\xbe\xd6\x7a\x66\xdf"
      "\xe6\xa0\xf5\xd5\xea\xf5\xed\xcf\xc6\xd6\xee\xbd\x4a\xb3\xda\x68\x56\x1a"
      "\x7b\xd7\x63\xb3\xbe\xbb\xd5\x7c\x79\xfd\xa1\x57\x60\x03\x00\x00\x00\xe7"
      "\xe8\xd1\x8f\xbf\xfe\xfb\x24\x22\x0e\x3f\x37\xd9\x1a\x32\xd7\x86\x5b\x74"
      "\xc8\x66\xc0\x45\x55\x3c\x2a\x25\xf9\xb8\xcb\x66\xfd\x87\x47\xda\xe3\x3f"
      "\x9f\x53\x52\xc0\xb9\x98\x18\x77\x02\xc0\xd8\x14\xc7\x9d\x00\x30\x36\xa5"
      "\x71\x27\x00\x8c\x5d\x32\x60\x7e\xcf\x9b\x77\x7e\x93\x8f\x3f\x31\xda\x7c"
      "\x00\x00\x80\xd1\x9b\xfd\x68\xef\xeb\xff\x85\xbe\x4b\x1e\xf6\x9f\x0d\x5c"
      "\x78\x36\x62\xb8\xba\x5c\xff\x87\xab\xab\x75\xfd\x7f\xd8\x3b\x79\x1d\x2c"
      "\xc0\xa5\x52\x1a\x74\x04\xd0\x77\x9b\x3f\x18\x71\x36\xc0\x38\xbc\xe7\xeb"
      "\xff\x03\xa5\xe9\x3b\x4a\x08\x00\x00\x18\xb9\xa9\xd6\x90\x14\xca\xc5\x4e"
      "\xbd\x50\x28\x97\x23\x6e\xb5\x5e\x0b\x50\x4a\x56\xd7\x6b\xd5\xb9\x88\x78"
      "\x24\x22\x7e\x37\x5d\xfa\x40\x56\x9f\x6f\xb5\x4c\x06\x9e\x33\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6d"
      "\x69\x9a\x44\x0a\x00\x00\x00\x5c\x6a\x11\x85\xbf\x26\xbf\x6a\x3f\xcb\x7f"
      "\x76\xfa\xa9\xa9\x93\xbf\x0f\x5c\x4b\xfe\x33\x1d\xf9\x2b\x42\x5f\xfd\xd1"
      "\x4b\x3f\xb8\xb7\xd4\x6c\xee\xcc\x67\xd3\xff\x79\x34\xbd\xf9\xc3\x7c\xfa"
      "\xd3\xe3\xf8\x05\x03\x00\x00\x00\xae\x84\x01\x2f\xf0\x7f\x58\xe7\x3c\xbd"
      "\x73\x1e\x0f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\xa3\xf4\xe6\x83\xd7\x96\x3b\xc3\x79\xc6\xfd\xfb\x17\x22"
      "\x62\xa6\x5b\xfc\x62\x5c\x6f\x8d\xaf\x47\x29\x22\x6e\xfc\x2b\x89\xe2\xb1"
      "\xe5\x92\x88\x98\x18\x41\xfc\xc9\xec\xcf\x47\xba\xc5\x4f\xb2\xb4\x8e\x42"
      "\x76\x8b\x3f\x39\x82\xf8\x87\xf7\xfb\xc6\x8f\xc3\xfc\x53\xe8\x16\xff\xe6"
      "\x08\xe2\xc3\x55\xf6\x7a\xb6\xff\x79\xa1\xdb\xf6\x57\x88\x27\x5a\xe3\xee"
      "\xdb\x5f\x31\xe2\xa1\xfa\xbb\xd5\x7b\xff\x17\x47\xfb\xbf\x89\x1e\xdb\xff"
      "\xad\x21\x63\x3c\xf6\xc6\xcf\x2b\x3d\xe3\xdf\x8f\x78\xac\x78\x2a\xfe\x41"
      "\x16\xa1\x13\x3f\xe9\x11\xff\xc9\x21\xe3\x7f\xe3\xeb\xfb\xfb\xbd\xe6\xa5"
      "\x3f\x8e\x98\xed\xfa\xfd\x93\x74\x9a\x64\x7b\xc8\xa8\x34\x37\xb7\x2b\x8d"
      "\xbd\xfd\xbb\xeb\x9b\x4b\x6b\xd5\xb5\xea\xd6\xc2\xc2\xfc\xb3\x8b\xcf\x2d"
      "\x3e\xb3\x38\x57\x59\x5d\xaf\x55\xf3\xbf\x5d\x63\x7c\xf7\x63\xbf\x78\xab"
      "\x5f\xff\x6f\xf4\x88\x3f\x33\xa0\xff\x4f\x9d\x5a\xdb\xb5\xae\x31\xfe\xf7"
      "\xc6\xbd\x07\x1f\x6a\x17\x4b\xdd\xe2\xdf\x7e\xb2\x4b\xfc\x5f\xff\x24\x6f"
      "\x71\x3a\x7e\x21\xff\xee\xfb\x54\x5e\xce\xe6\xcf\x76\xca\x87\xed\xf2\x71"
      "\x8f\xff\xec\xb7\x8f\xf7\xeb\xff\x4a\x8f\xfe\x0f\xfa\xff\xdf\xee\xb5\xd2"
      "\x13\xee\x7c\xf5\xdb\x7f\x1a\xb2\x29\x00\x70\x0e\x1a\x7b\xfb\x1b\x4b\xb5"
      "\x5a\x75\xe7\xd2\x16\xb2\xb3\xf4\x21\x1b\x67\x47\x67\x17\x22\x67\x85\xf3"
      "\x29\x1c\x8c\x74\x85\x69\x9a\xa6\xd9\x36\xf5\x1e\xd6\x93\xc4\x45\xf8\x58"
      "\x5a\x85\x71\xef\x99\x00\x00\x80\x51\x7b\xfb\xa0\x7f\xdc\x99\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xd5\x75\x1e\x8f\x13"
      "\x3b\x19\xf3\xf0\xa8\x94\x8c\xe2\x11\xda\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x23\xf1\xff"
      "\x00\x00\x00\xff\xff\xec\xd7\xd9\x32",
      1323));
  NONFAILING(syz_mount_image(/*fs=*/0x2000000000c0, /*dir=*/0x2000000001c0,
                             /*flags=MS_RDONLY|MS_MANDLOCK*/ 0x41,
                             /*opts=*/0x200000000080, /*chdir=*/0x64,
                             /*size=*/0x52b, /*img=*/0x200000000f40));
  NONFAILING(memcpy((void*)0x200000000000, ".\000", 2));
  res = syscall(__NR_fspick, /*dfd=*/0xffffff9c, /*path=*/0x200000000000ul,
                /*flags=*/0ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(memcpy((void*)0x200000000080,
                    "/proc/sys/fs/binfmt_misc/register\000", 34));
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000080ul, /*flags=*/1, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  NONFAILING(*(uint8_t*)0x200000000440 = 0x3a);
  NONFAILING(memcpy((void*)0x200000000441, "syz1", 4));
  NONFAILING(*(uint8_t*)0x200000000445 = 0x3a);
  NONFAILING(memset((void*)0x200000000446, 77, 1));
  NONFAILING(*(uint8_t*)0x200000000447 = 0x3a);
  NONFAILING(sprintf((char*)0x200000000448, "%020llu", (long long)0));
  NONFAILING(*(uint8_t*)0x20000000045c = 0x3a);
  NONFAILING(memcpy((void*)0x20000000045d, "usrjquota=", 10));
  NONFAILING(*(uint8_t*)0x200000000467 = 0x3a);
  NONFAILING(*(uint8_t*)0x200000000468 = 0x3a);
  NONFAILING(memcpy((void*)0x200000000469, "./file2", 7));
  NONFAILING(*(uint8_t*)0x200000000470 = 0x3a);
  NONFAILING(*(uint8_t*)0x200000000471 = 0x46);
  syscall(__NR_write, /*fd=*/r[1], /*data=*/0x200000000440ul, /*len=*/0x32ul);
  syscall(__NR_fsconfig, /*fd=*/r[0], /*cmd=*/7ul, /*key=*/0ul, /*value=*/0ul,
          /*aux=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_binfmt_misc()))
    printf("the reproducer may not work as expected: binfmt_misc setup failed: "
           "%s\n",
           reason);
  install_segv_handler();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}