// https://syzkaller.appspot.com/bug?id=24c1b813c97a368a62d58fee8fd55609195d503f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.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/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#include <linux/loop.h>

#ifndef __NR_chdir
#define __NR_chdir 49
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 29
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_mount
#define __NR_mount 40
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_renameat2
#define __NR_renameat2 276
#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;                                                                        \
  })

//% 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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  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;
}

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

int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000,
          /*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=*/0x21000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  install_segv_handler();
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$ext4 arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 74 34 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: ptr[in, fs_options[ext4_options]] {
  //      fs_options[ext4_options] {
  //        elems: array[fs_opt_elem[ext4_options]] {
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_nolock: buffer: {64 69 6f 72 65 61 64 5f 6e 6f 6c 6f
  //              63 6b} (length 0xe)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              resuid: fs_opt["resuid", fmt[hex, uid]] {
  //                name: buffer: {72 65 73 75 69 64} (length 0x6)
  //                eq: const = 0x3d (1 bytes)
  //                val: uid (resource)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              barrier_val: fs_opt["barrier", fmt[hex, int32]] {
  //                name: buffer: {62 61 72 72 69 65 72} (length 0x7)
  //                eq: const = 0x3d (1 bytes)
  //                val: int32 = 0x9 (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x4b2 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x4b2)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200004c0, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x20000500, "./file1\000", 8));
  NONFAILING(memcpy((void*)0x20000240, "dioread_nolock", 14));
  NONFAILING(*(uint8_t*)0x2000024e = 0x2c);
  NONFAILING(memcpy((void*)0x2000024f, "resuid", 6));
  NONFAILING(*(uint8_t*)0x20000255 = 0x3d);
  NONFAILING(sprintf((char*)0x20000256, "0x%016llx", (long long)0));
  NONFAILING(*(uint8_t*)0x20000268 = 0x2c);
  NONFAILING(memcpy((void*)0x20000269, "barrier", 7));
  NONFAILING(*(uint8_t*)0x20000270 = 0x3d);
  NONFAILING(sprintf((char*)0x20000271, "0x%016llx", (long long)9));
  NONFAILING(*(uint8_t*)0x20000283 = 0x2c);
  NONFAILING(*(uint8_t*)0x20000284 = 0);
  NONFAILING(memcpy(
      (void*)0x20000540,
      "\x78\x9c\xec\xdd\xcd\x6f\x1b\x65\x1a\x00\xf0\xc7\x76\x93\x26\x69\x76\xfb"
      "\xb1\xab\x55\xdb\x95\xb6\x95\xba\x52\xf7\x43\x8d\xf3\xa1\x55\x93\x85\x0b"
      "\x27\xe0\x50\x09\x51\x89\x0b\x48\x25\x24\x6e\x28\x71\xe2\x28\x76\x4a\x13"
      "\xf5\x90\xc2\xad\x07\x0e\x08\x04\x12\xe2\xc0\x9d\xbf\x80\x0b\x3d\x51\x21"
      "\x21\xce\x70\x47\x1c\x50\x11\x94\x20\x01\x12\x92\xd1\x8c\xed\x34\x5f\x0e"
      "\x16\xa4\x31\xca\xfc\x7e\xd2\xc4\x33\xf3\x3a\xf3\xbc\xaf\xad\xe7\xd5\xcc"
      "\x3b\x33\x9e\x00\x32\xeb\x6c\xf2\x27\x17\x31\x18\x11\x9f\x46\xc4\xd1\xc6"
      "\xe2\xe6\x37\x9c\x6d\xbc\xac\xdd\xbf\x39\x95\x4c\xb9\xa8\xd7\x2f\x7f\x93"
      "\x4b\xdf\x97\x2c\xb7\xde\xda\xfa\xbf\x23\x11\xb1\x1a\x11\x7d\x11\xf1\xf4"
      "\xe3\x11\x2f\xe4\xb6\xc7\xad\x2e\xaf\xcc\x4e\x96\xcb\xa5\xc5\xe6\x72\xb1"
      "\x36\xb7\x50\xac\x2e\xaf\x5c\xb8\x36\x37\x39\x53\x9a\x29\xcd\x8f\x8c\x5f"
      "\x9c\x98\x18\x1f\x1e\x1b\x9d\xd8\xb3\xb6\xde\x7e\xed\xa5\xdb\x97\x3e\x78"
      "\xb2\xf7\xfd\x1f\x5e\xbd\x77\xf7\xf5\x8f\x3e\x4c\xaa\x35\xd8\x2c\xdb\xd8"
      "\x8e\xbd\xd4\x68\x7a\x4f\x1c\xdf\xb0\xee\x50\x44\x3c\xfa\x30\x82\x75\x41"
      "\xa1\xd9\x9e\xfe\x6e\x57\x84\xdf\x24\xf9\xfe\xfe\x12\x11\xe7\xd2\xfc\x3f"
      "\x1a\x85\xf4\xdb\x04\xb2\xa0\x5e\xaf\xd7\x7f\xae\x1f\x6e\x57\xbc\x5a\x07"
      "\x0e\xac\x7c\xba\x0f\x9c\xcb\x0f\x45\x44\x63\x3e\x9f\x1f\x1a\x6a\xec\xc3"
      "\xff\x35\x06\xf2\xe5\x4a\xb5\xf6\xdf\xab\x95\xa5\xf9\xe9\xc6\xbe\xf2\xb1"
      "\xe8\xc9\x5f\xbd\x56\x2e\x0d\x37\x8f\x15\x8e\x45\x4f\x2e\x59\x1e\x49\xe7"
      "\x1f\x2c\x8f\x6e\x59\x1e\x8b\x48\xf7\x81\xdf\x28\xf4\xa7\xcb\x43\x53\x95"
      "\xf2\xf4\xfe\x76\x75\xc0\x16\x47\x9a\xf9\xdf\xdf\xcc\xff\xef\x0b\x8d\xfc"
      "\x07\x32\x62\xe7\x43\xfe\xb6\x07\x05\xc0\x01\x62\xc8\x0f\xb2\x4b\xfe\x43"
      "\x76\xc9\x7f\xc8\x2e\xf9\x0f\xd9\x25\xff\x21\xbb\xe4\x3f\x64\x97\xfc\x87"
      "\xec\x92\xff\x90\x5d\xf2\x1f\xb2\x4b\xfe\x43\x26\x3d\x75\xe9\x52\x32\xd5"
      "\x5b\xf7\xbf\x4f\x5f\x5f\x5e\x9a\xad\x5c\xbf\x30\x5d\xaa\xce\x0e\xcd\x2d"
      "\x4d\x0d\x4d\x55\x16\x17\x86\x66\x2a\x95\x99\xf4\x9e\x9d\xb9\x5f\xdb\x5e"
      "\xb9\x52\x59\x18\xf9\x5f\x2c\xdd\x28\xd6\x4a\xd5\x5a\xb1\xba\xbc\x72\x65"
      "\xae\xb2\x34\x5f\xbb\x92\xde\xd7\x7f\xa5\xd4\xb3\x2f\xad\x02\x3a\x71\xfc"
      "\xcc\x9d\xcf\x73\x11\xb1\xfa\xff\xfe\x74\x4a\xf4\x36\xcb\xe4\x2a\x1c\x6c"
      "\xf5\x7a\x2e\xba\x7d\x0f\x32\xd0\x1d\x85\x6e\x77\x40\x40\xd7\x18\xfa\x83"
      "\xec\x72\x8c\x0f\xec\xf0\x13\xbd\x9b\xf4\xb5\x2b\x58\xd8\xfb\xba\x00\xfb"
      "\x23\xdf\xed\x0a\x00\x5d\x73\xfe\x94\xf3\x7f\x90\x55\xc6\xff\x21\xbb\x8c"
      "\xff\x43\x76\xd9\xc7\x07\x8c\xff\x43\xf6\x18\xff\x87\xec\x1a\x6c\xf3\xfc"
      "\xaf\x3f\x6d\x78\x76\xd7\x70\x44\xfc\x39\x22\x3e\x2b\xf4\x1c\x6e\x3d\xeb"
      "\x0b\x38\x08\xf2\x5f\xe5\x22\xf2\xc9\xfe\xff\xf9\xa3\xff\x1c\xdc\x5a\xda"
      "\x9b\xfb\x31\x3d\x45\xd0\x1b\x11\x2f\xbf\x73\xf9\xad\x1b\x93\xb5\xda\xe2"
      "\x48\xb2\xfe\xdb\xf5\xf5\xb5\xb7\x9b\xeb\x47\xbb\x51\x7f\xa0\x53\xad\x3c"
      "\x6d\xe5\x31\x00\x90\x5d\x6b\xf7\x6f\x4e\xb5\xa6\xfd\x8c\xfb\xf5\x63\x8d"
      "\x8b\x10\xb6\xc7\x3f\xd4\x1c\x9b\xec\x4b\xcf\x51\x0e\xac\xe5\x36\x5d\xab"
      "\x90\xdb\xa3\x6b\x17\x56\x6f\x45\xc4\xc9\x9d\xe2\xe7\x9a\xcf\x3b\x6f\x9c"
      "\xf9\x18\x58\x2b\x6c\x8b\x7f\xa2\xf9\x9a\x6b\x6c\x22\xad\xef\xa1\xf4\xb9"
      "\xe9\xfb\x13\xff\xd4\x86\xf8\xff\xd8\x10\xff\xf4\xef\xfe\x54\x20\x1b\xee"
      "\x24\xfd\xcf\xf0\x4e\xf9\x97\x4f\x73\x3a\xd6\xf3\x6f\x73\xff\x33\xb8\x47"
      "\xd7\x4e\xb4\xef\xff\xf2\xeb\xfd\x5f\xa1\x4d\xff\x77\xa6\xc3\x18\x2f\xbe"
      "\xfb\xca\x97\x6d\xe3\xdf\x8a\x38\xbd\x63\xfc\x56\xbc\xbe\x34\xd6\xd6\xf8"
      "\x49\xdd\xce\x77\x16\x3e\x77\xef\xb9\x67\xfe\xd6\xae\xb0\xfe\x5e\x63\x3b"
      "\x3b\xc5\x5f\xdf\x40\x44\x14\x6b\x73\x0b\xc5\xea\xf2\xca\x85\xf4\x77\xe4"
      "\x66\x4a\xf3\x23\xe3\x17\x27\x26\xc6\x87\xc7\x46\x27\x8a\xe9\x18\x75\xb1"
      "\x35\x52\xbd\xdd\x23\x27\x3f\xb9\xbb\x5b\xfb\x07\x1e\xc4\xef\x8f\x88\x8e"
      "\xda\x9f\xac\xfb\x77\x67\xed\x8f\x9f\xfe\xfe\xf1\xb3\x67\x77\x89\xff\xaf"
      "\x73\x3b\x7f\xff\x27\x76\x89\x9f\x54\xf4\x3f\x1d\xc6\xff\x6e\xf4\x8b\xe7"
      "\xdb\x95\x25\xf1\xa7\xdb\x7c\xfe\xf9\x5d\xe2\x27\xeb\xc6\x3a\x8c\x5f\x7d"
      "\xf3\x09\xcf\x12\x07\x80\x3f\x90\xea\xf2\xca\xec\x64\xb9\x5c\x5a\x34\x63"
      "\xc6\x8c\x99\xf5\x99\x6e\xf7\x4c\xc0\xc3\xf6\x20\xe9\xbb\x5d\x13\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\xa0\x53\xfb\x71\x39\x71\xb7\xdb\x08\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x70\x10\xfc\x12\x00\x00\xff\xff\x6b\xe3\xd3\x86",
      1202));
  NONFAILING(syz_mount_image(/*fs=*/0x200004c0, /*dir=*/0x20000500, /*flags=*/0,
                             /*opts=*/0x20000240, /*chdir=*/1, /*size=*/0x4b2,
                             /*img=*/0x20000540));
  //  syz_mount_image$fuse arguments: [
  //    fs: nil
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: mount_flags = 0x3000009 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: const = 0x0 (8 bytes)
  //    img: nil
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000c0, "./bus\000", 6));
  NONFAILING(syz_mount_image(
      /*fs=*/0, /*dir=*/0x200000c0,
      /*flags=MS_LAZYTIME|MS_STRICTATIME|MS_RDONLY|MS_NOEXEC*/ 0x3000009,
      /*opts=*/0, /*chdir=*/1, /*size=*/0, /*img=*/0));
  //  mount$overlay arguments: [
  //    src: const = 0x0 (8 bytes)
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {6f 76 65 72 6c 61 79 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x8 (8 bytes)
  //    opts: ptr[in, fs_options[overlay_options]] {
  //      fs_options[overlay_options] {
  //        elems: array[fs_opt_elem[overlay_options]] {
  //          fs_opt_elem[overlay_options] {
  //            elem: union overlay_options {
  //              upperdir: fs_opt["upperdir", stringnoz[filename]] {
  //                name: buffer: {75 70 70 65 72 64 69 72} (length 0x8)
  //                eq: const = 0x3d (1 bytes)
  //                val: buffer: {2e 2f 66 69 6c 65 30} (length 0x7)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[overlay_options] {
  //            elem: union overlay_options {
  //              lowerdir: fs_opt["lowerdir", stringnoz[filename]] {
  //                name: buffer: {6c 6f 77 65 72 64 69 72} (length 0x8)
  //                eq: const = 0x3d (1 bytes)
  //                val: buffer: {2e} (length 0x1)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[overlay_options] {
  //            elem: union overlay_options {
  //              workdir: fs_opt["workdir", stringnoz[filename]] {
  //                name: buffer: {77 6f 72 6b 64 69 72} (length 0x7)
  //                eq: const = 0x3d (1 bytes)
  //                val: buffer: {2e 2f 62 75 73} (length 0x5)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //  ]
  NONFAILING(memcpy((void*)0x20000080, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x20000b80, "overlay\000", 8));
  NONFAILING(memcpy((void*)0x20000240, "upperdir", 8));
  NONFAILING(*(uint8_t*)0x20000248 = 0x3d);
  NONFAILING(memcpy((void*)0x20000249, "./file0", 7));
  NONFAILING(*(uint8_t*)0x20000250 = 0x2c);
  NONFAILING(memcpy((void*)0x20000251, "lowerdir", 8));
  NONFAILING(*(uint8_t*)0x20000259 = 0x3d);
  NONFAILING(memset((void*)0x2000025a, 46, 1));
  NONFAILING(*(uint8_t*)0x2000025b = 0x2c);
  NONFAILING(memcpy((void*)0x2000025c, "workdir", 7));
  NONFAILING(*(uint8_t*)0x20000263 = 0x3d);
  NONFAILING(memcpy((void*)0x20000264, "./bus", 5));
  NONFAILING(*(uint8_t*)0x20000269 = 0x2c);
  NONFAILING(*(uint8_t*)0x2000026a = 0);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x20000080ul, /*type=*/0x20000b80ul,
          /*flags=MS_NOEXEC*/ 8ul, /*opts=*/0x20000240ul);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 2f 66 69 6c 65 30 00} (length 0xe)
  //    }
  //    flags: open_flags = 0x103042 (4 bytes)
  //    mode: open_mode = 0x41 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000c0, "./file0/file0\000", 14));
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000c0ul,
                /*flags=O_SYNC|O_CREAT|FASYNC|O_RDWR*/ 0x103042,
                /*mode=S_IXOTH|S_IXUSR*/ 0x41);
  if (res != -1)
    r[0] = res;
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x42 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x20000440, "./file1\000", 8));
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000440ul,
                /*flags=O_CREAT|O_RDWR*/ 0x42, /*mode=*/0);
  if (res != -1)
    r[1] = res;
  //  ioctl$EXT4_IOC_MOVE_EXT arguments: [
  //    fd: fd (resource)
  //    cmd: const = 0xc028660f (4 bytes)
  //    arg: ptr[in, move_extent] {
  //      move_extent {
  //        reserved: const = 0x0 (4 bytes)
  //        donor_fd: fd (resource)
  //        orig_start: int64 = 0x0 (8 bytes)
  //        donor_start: int64 = 0x0 (8 bytes)
  //        len: int64 = 0x4 (8 bytes)
  //        moved_len: int64 = 0x1000000000000 (8 bytes)
  //      }
  //    }
  //  ]
  NONFAILING(*(uint32_t*)0x20000040 = 0);
  NONFAILING(*(uint32_t*)0x20000044 = r[0]);
  NONFAILING(*(uint64_t*)0x20000048 = 0);
  NONFAILING(*(uint64_t*)0x20000050 = 0);
  NONFAILING(*(uint64_t*)0x20000058 = 4);
  NONFAILING(*(uint64_t*)0x20000060 = 0x1000000000000);
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xc028660f, /*arg=*/0x20000040ul);
  //  chdir arguments: [
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //  ]
  NONFAILING(memcpy((void*)0x20000300, "./file0\000", 8));
  syscall(__NR_chdir, /*dir=*/0x20000300ul);
  //  renameat2 arguments: [
  //    oldfd: fd_dir (resource)
  //    old: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    newfd: fd_dir (resource)
  //    new: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: renameat2_flags = 0x0 (8 bytes)
  //  ]
  NONFAILING(memcpy((void*)0x20000340, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x20000a00, "./file1\000", 8));
  syscall(__NR_renameat2, /*oldfd=*/0xffffff9c, /*old=*/0x20000340ul,
          /*newfd=*/0xffffff9c, /*new=*/0x20000a00ul, /*flags=*/0ul);
  return 0;
}