// https://syzkaller.appspot.com/bug?id=f4846413aea05f713fce426378f26c7bfabd539f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/loop.h>

#ifndef __NR_fcntl
#define __NR_fcntl 25
#endif
#ifndef __NR_ftruncate
#define __NR_ftruncate 46
#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

static unsigned long long procid;

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 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");
  } 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;
}

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");
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      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;
    }
  }
}

uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  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 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x100009a (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 {
  //              oldalloc: buffer: {6f 6c 64 61 6c 6c 6f 63} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              noinit_itable: buffer: {6e 6f 69 6e 69 74 5f 69 74 61 62 6c
  //              65} (length 0xd)
  //            }
  //            comma: const = 0x22 (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              dioread_lock: buffer: {64 69 6f 72 65 61 64 5f 6c 6f 63 6b}
  //              (length 0xc)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              data_journal: buffer: {64 61 74 61 3d 6a 6f 75 72 6e 61 6c}
  //              (length 0xc)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              nouid32: buffer: {6e 6f 75 69 64 33 32} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              usrjquota: buffer: {75 73 72 6a 71 75 6f 74 61 3d} (length
  //              0xa)
  //            }
  //            comma: const = 0x22 (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              errors_continue: buffer: {65 72 72 6f 72 73 3d 63 6f 6e 74 69
  //              6e 75 65} (length 0xf)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              errors_remount: buffer: {65 72 72 6f 72 73 3d 72 65 6d 6f 75
  //              6e 74 2d 72 6f} (length 0x11)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              jqfmt_vfsv1: buffer: {6a 71 66 6d 74 3d 76 66 73 76 31}
  //              (length 0xb)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              grpquota: buffer: {67 72 70 71 75 6f 74 61} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              smackfshat: fs_opt["smackfshat", stringnoz] {
  //                name: buffer: {73 6d 61 63 6b 66 73 68 61 74} (length 0xa)
  //                eq: const = 0x3d (1 bytes)
  //                val: buffer: {64 61 74 61 3d 6a 6f 75 72 6e 61 6c} (length
  //                0xc)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              context: fs_opt["context", stringnoz[selinux_user_context]] {
  //                name: buffer: {63 6f 6e 74 65 78 74} (length 0x7)
  //                eq: const = 0x3d (1 bytes)
  //                val: buffer: {73 79 73 74 65 6d 5f 75} (length 0x8)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              uid_lt: fs_opt_nodelim["uid<", fmt[dec, uid]] {
  //                name: buffer: {75 69 64 3c} (length 0x4)
  //                val: uid (resource)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              uid_eq: fs_opt["uid", fmt[dec, uid]] {
  //                name: buffer: {75 69 64} (length 0x3)
  //                eq: const = 0x3d (1 bytes)
  //                val: uid (resource)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              appraise_type: buffer: {61 70 70 72 61 69 73 65 5f 74 79 70 65
  //              3d 69 6d 61 73 69 67} (length 0x14)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              seclabel: buffer: {73 65 63 6c 61 62 65 6c} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              audit: buffer: {61 75 64 69 74} (length 0x5)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[fs_options_common] {
  //            elem: union fs_options_common {
  //              measure: buffer: {6d 65 61 73 75 72 65} (length 0x7)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0xfe (1 bytes)
  //    size: len = 0x44f (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x44f)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x20000080, "ext4\000", 5);
  memcpy((void*)0x20000200, "./file0\000", 8);
  memcpy((void*)0x20001100, "oldalloc", 8);
  *(uint8_t*)0x20001108 = 0x2c;
  memcpy((void*)0x20001109, "noinit_itable", 13);
  *(uint8_t*)0x20001116 = 0x22;
  memcpy((void*)0x20001117, "dioread_lock", 12);
  *(uint8_t*)0x20001123 = 0x2c;
  memcpy((void*)0x20001124, "data=journal", 12);
  *(uint8_t*)0x20001130 = 0x2c;
  memcpy((void*)0x20001131, "nouid32", 7);
  *(uint8_t*)0x20001138 = 0x2c;
  memcpy((void*)0x20001139, "usrjquota=", 10);
  *(uint8_t*)0x20001143 = 0x22;
  memcpy((void*)0x20001144, "errors=continue", 15);
  *(uint8_t*)0x20001153 = 0x2c;
  memcpy((void*)0x20001154, "errors=remount-ro", 17);
  *(uint8_t*)0x20001165 = 0x2c;
  memcpy((void*)0x20001166, "jqfmt=vfsv1", 11);
  *(uint8_t*)0x20001171 = 0x2c;
  memcpy((void*)0x20001172, "grpquota", 8);
  *(uint8_t*)0x2000117a = 0x2c;
  memcpy((void*)0x2000117b, "smackfshat", 10);
  *(uint8_t*)0x20001185 = 0x3d;
  memcpy((void*)0x20001186, "data=journal", 12);
  *(uint8_t*)0x20001192 = 0x2c;
  memcpy((void*)0x20001193, "context", 7);
  *(uint8_t*)0x2000119a = 0x3d;
  memcpy((void*)0x2000119b, "system_u", 8);
  *(uint8_t*)0x200011a3 = 0x2c;
  memcpy((void*)0x200011a4, "uid<", 4);
  sprintf((char*)0x200011a8, "%020llu", (long long)0);
  *(uint8_t*)0x200011bc = 0x2c;
  memcpy((void*)0x200011bd, "uid", 3);
  *(uint8_t*)0x200011c0 = 0x3d;
  sprintf((char*)0x200011c1, "%020llu", (long long)0);
  *(uint8_t*)0x200011d5 = 0x2c;
  memcpy((void*)0x200011d6, "appraise_type=imasig", 20);
  *(uint8_t*)0x200011ea = 0x2c;
  memcpy((void*)0x200011eb, "seclabel", 8);
  *(uint8_t*)0x200011f3 = 0x2c;
  memcpy((void*)0x200011f4, "audit", 5);
  *(uint8_t*)0x200011f9 = 0x2c;
  memcpy((void*)0x200011fa, "measure", 7);
  *(uint8_t*)0x20001201 = 0x2c;
  *(uint8_t*)0x20001202 = 0;
  memcpy(
      (void*)0x20000900,
      "\x78\x9c\xec\xdc\xcd\x4f\x5c\x55\x1b\x00\xf0\x67\x66\x18\x5a\xda\xf2\xc2"
      "\x5b\xeb\x47\xb1\x55\xb4\x1a\x89\x1f\x50\xe8\x87\x5d\xb8\xb0\x46\x13\x17"
      "\x9a\x98\xe8\xa2\xc6\x15\x02\x6d\xb0\xd3\x62\x0a\x26\xb6\x21\x8a\x2e\x70"
      "\x69\x9a\xb8\x37\x2e\x4d\xfc\x0b\xdc\x58\x37\x46\x5d\x99\xb8\xd5\xbd\x31"
      "\x21\x86\x8d\xd5\xd5\x98\x3b\x73\x2f\x8c\x30\x03\x0c\x0c\x4c\xed\xfc\x7e"
      "\xc9\x25\xe7\xcc\x39\xe4\x9c\xe7\xde\x7b\x66\xce\x9c\x7b\xef\x04\xd0\xb1"
      "\x06\x93\x3f\xb9\x88\x43\x11\xf1\x4b\x44\xf4\x55\xb3\xab\x9e\xaf\x56\x4a"
      "\xea\xdd\x5e\x9e\x9f\xf8\x6b\x79\x7e\x22\x17\xe5\xf2\xeb\x7f\xe4\x2a\xf5"
      "\xfe\x5c\x9e\x9f\xc8\xaa\x66\xff\x77\xb0\x9a\x29\x97\x37\x68\x77\xf1\xad"
      "\x88\xf1\x52\x69\xea\x5a\x9a\x1f\x99\xbb\xf2\xee\xc8\xec\xf5\x1b\xcf\x4c"
      "\x5f\x19\xbf\x34\x75\x69\xea\xea\xd8\xb9\x73\xa7\x4f\x1d\xef\x3e\x3b\x76"
      "\xa6\x25\x71\xf6\x26\x7d\x1d\xf8\x60\xe6\xd8\xd1\x97\xdf\xbc\xf9\xea\xc4"
      "\x85\x9b\x6f\xff\xf0\x55\xd2\xdf\x43\x69\x79\x6d\x1c\xad\x32\x58\xdd\xbb"
      "\x75\x3d\xde\xea\xc6\xda\xac\xb7\x26\x9d\xeb\x6a\x63\x47\x68\x4a\x21\x22"
      "\x92\xc3\x55\xac\x8c\xff\xbe\x28\x44\xcf\x4a\x59\x5f\xbc\xf4\x71\x5b\x3b"
      "\x07\xec\xaa\x72\x39\x5f\xde\xd7\xb8\x78\xa1\x0c\xdc\xc5\x92\x89\x3a\xd0"
      "\x89\xb2\x0f\xfa\xe4\xfb\x6f\xb6\xed\xd1\xd4\xe3\x8e\xb0\x74\x3e\x56\xd6"
      "\x31\x6e\xa7\x5b\xb5\xa4\x2b\xf2\x69\x9d\x62\xfa\x1d\x69\x37\x0c\x46\xc4"
      "\x85\x85\xbf\x3f\x4f\xb6\xd8\xa5\x75\x08\x00\x80\x5a\xb7\xce\x47\xc4\xd3"
      "\xf5\xe6\x7f\xf9\xb8\xaf\xa6\xde\xff\xd2\x6b\x43\xfd\x11\xf1\xff\x88\x38"
      "\x1c\x11\xf7\x44\xc4\x91\x88\xb8\x37\xa2\x52\xf7\xfe\x88\x78\xa0\xc9\xf6"
      "\xd7\x5e\x21\x59\x3f\xff\x29\xf7\x6d\x2b\xb0\x2d\x4a\xe6\x7f\xcf\xa5\xd7"
      "\xb6\xfe\x3d\xff\xcb\x66\x7f\xd1\x5f\x48\x73\xbd\x95\xf8\x8b\xb9\x8b\xd3"
      "\xa5\xa9\x93\xe9\x3e\x19\x8a\xe2\xbe\x24\x3f\xba\x41\x1b\xdf\xbe\xf8\xf3"
      "\xa7\x8d\xca\x6a\xe7\x7f\xc9\x96\xb4\x9f\xcd\x05\xd3\x7e\xfc\xde\xb5\x66"
      "\x81\x6e\x72\x7c\x6e\x7c\x27\x31\xd7\x5a\xfa\x28\x62\xa0\xab\x5e\xfc\xb9"
      "\x95\x39\x6f\x32\x3f\x3e\x1a\x11\x03\xdb\x6c\x63\xfa\xc9\x2f\x8f\x35\x2a"
      "\xdb\x3c\xfe\x0d\xb4\x60\x52\x5e\xfe\x22\xe2\x89\xea\xf1\x5f\x88\x35\xf1"
      "\x67\x72\x0d\xaf\x4f\x8e\x3e\x7b\x76\xec\xcc\xc8\xfe\x28\x4d\x9d\x1c\xc9"
      "\xce\x8a\xf5\x7e\xfc\x69\xf1\xb5\x46\xed\xef\x28\xfe\x16\x58\xba\x55\x8e"
      "\x03\x75\xcf\xff\x95\xf8\xfb\x73\xfb\x23\x66\xaf\xdf\xb8\x5c\xb9\x5e\x3b"
      "\xdb\x7c\x1b\x8b\xbf\x7e\xd2\xf0\x3b\xcd\x76\xcf\xff\xee\xdc\x1b\x95\x74"
      "\x77\xfa\xda\xfb\xe3\x73\x73\xd7\x46\x23\xba\x73\xaf\xac\x7f\x7d\x6c\xf5"
      "\x7f\xb3\x7c\x56\x3f\x39\xff\x87\x4e\xd4\x1f\xff\x87\x63\x75\x4f\x3c\x18"
      "\x11\xc9\x49\x7c\x3c\x22\x1e\x8a\x88\x87\xd3\xbe\x3f\x12\x11\x8f\x46\xc4"
      "\x89\x0d\xe2\xff\xfe\x85\xc7\xde\x69\x3e\xfe\x0d\x56\xe5\x5b\x28\x89\x7f"
      "\x72\xb3\xe3\x1f\xb5\xc7\xbf\xf9\x44\xe1\xf2\x77\x5f\x37\x1f\x7f\x26\x39"
      "\xfe\xa7\x2b\xa9\xa1\xf4\x95\xad\xbc\xff\x6d\xb5\x83\x3b\xd9\x77\x00\x00"
      "\x00\xf0\x5f\x91\xaf\xdc\x03\x9f\xcb\x0f\xaf\xa4\xf3\xf9\xe1\xe1\xea\x3d"
      "\xfc\x47\xe2\x40\xbe\x34\x33\x3b\xf7\xd4\xc5\x99\xf7\xae\x4e\x56\xef\x95"
      "\xef\x8f\x62\x3e\x5b\xe9\xea\xab\x59\x0f\x1d\x4d\xd7\x86\xb3\xfc\xd8\x9a"
      "\xfc\xa9\x74\xdd\xf8\xb3\x42\x4f\x25\x3f\x3c\x31\x53\x9a\x6c\x77\xf0\xd0"
      "\xe1\x0e\x36\x18\xff\x89\xdf\x0a\xed\xee\x1d\xb0\xeb\x3c\xaf\x05\x9d\xcb"
      "\xf8\x87\xce\x65\xfc\x43\xe7\x32\xfe\xa1\x73\x19\xff\xd0\xb9\xea\x8d\xff"
      "\x0f\xdb\xd0\x0f\x60\xef\x6d\xf2\xf9\xdf\xb3\x57\xfd\x00\xf6\x9e\xf9\x3f"
      "\x74\x2e\xe3\x1f\x3a\x97\xf1\x0f\x1d\xa9\xe1\xb3\xf1\xf9\x1d\x3d\xf2\x2f"
      "\xd1\xa6\xc4\x37\xdd\x3b\xfb\xad\x86\xad\x27\x22\x7f\x87\x84\x7c\xd7\x24"
      "\x8a\x51\xb7\xa8\x6b\xcb\x3f\x66\xb1\xcd\xc4\xbe\xba\x45\xed\x7e\x67\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\x68\x8d\x7f\x02\x00\x00\xff"
      "\xff\x12\xfe\xe3\x34",
      1103);
  syz_mount_image(
      /*fs=*/0x20000080, /*dir=*/0x20000200,
      /*flags=MS_SYNCHRONOUS|MS_STRICTATIME|MS_NOSUID|MS_NOEXEC|0x80*/
      0x100009a, /*opts=*/0x20001100, /*chdir=*/0xfe, /*size=*/0x44f,
      /*img=*/0x20000900);
  //  openat$udambuf arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2f 64 65 76 2f 75 64 6d 61 62 75 66 00} (length 0xd)
  //    }
  //    flags: const = 0x2 (4 bytes)
  //  ]
  //  returns fd_udambuf
  memcpy((void*)0x20000140, "/dev/udmabuf\000", 13);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000140ul,
                /*flags=*/2, 0);
  if (res != -1)
    r[0] = res;
  //  memfd_create arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {79 10 35 fb f7 75 83 25 3a 72 c2 b9 78 a4 71 c1 ea 5f 8c 5a
  //      84 7d 58 73 37 e7 61 9b 11 78 0e a1 cf 1a 98 53 37 c9 00 00 00 00 00
  //      00 07 00 00 e7 d7 3e 0a 84 8c 54 e3 35 6b e9 90 87 39 a2 34 a9 61 6d
  //      de b2 d3 cb 5a 4a 6f 61 c4 1a 63 42 aa c1 fb 20 51 d4 d4 bd 7b 9f a9
  //      97 9b 40 db 00 62 e1 62 72 b6 00 38 e3 10 ff c2 9d 0d 32 9e 8e 04 73
  //      57 1b b7 b3 a2 c9 26 40 ca da dc e2 2f 97 58 ac 08 b0 c2 3c 80 45 1a
  //      bc c7 57 da 39 56 73 41 af c6 cf e1 a1 b5 4d a2 85 a6 79 c4 4a f1 f7
  //      fc 44 95 e3 eb c7 bc 91 b0 a8 9e 6f eb 46 28 9d 4c 01 76 52 6b aa 63
  //      42 04 a7 49 0b 86 45 5a 96 d5 14 01 00 00 00 00 00 00 00 cc d1 0f 72
  //      65 e8 36 cd eb c4 24 b0 06 4a d6 64 44 8d 5f 55 60 6a 69 7b ab 97 af
  //      3b 6c 1f af b3 38 55 cb fa b3 6a 92 0c 81 a0 a2 2d 67 08 99 0e 8d 8d
  //      16 d9 77 5c f8 ce b0 6a 9d 27 93 ef 1d a0 48 d9 bd d9 af 12 24 8d 16
  //      25 8b 00 00 00 00 00 00 00 00 00} (length 0x11c)
  //    }
  //    flags: memfd_flags = 0x2 (8 bytes)
  //  ]
  //  returns fd_memfd
  memcpy(
      (void*)0x20000ec0,
      "y\0205\373\367u\203%:r\302\271x\244q\301\352_\214Z\204}"
      "Xs7\347a\233\021x\016\241\317\032\230S7\311\000\000\000\000\000\000\a"
      "\000\000\347\327>"
      "\n\204\214T\3435k\351\220\2079\2424\251am\336\262\323\313ZJoa\304\032cB"
      "\252\301\373 "
      "Q\324\324\275{\237\251\227\233@"
      "\333\000b\341br\266\0008\343\020\377\302\235\r2\236\216\004sW\033\267"
      "\263\242\311&@\312\332\334\342/"
      "\227X\254\b\260\302<"
      "\200E\032\274\307W\3329VsA\257\306\317\341\241\265M\242\205\246y\304J"
      "\361\367\374D\225\343\353\307\274\221\260\250\236o\353F("
      "\235L\001vRk\252cB\004\247I\v\206EZ\226\325\024\001\000\000\000\000\000"
      "\000\000\314\321\017re\3506\315\353\304$\260\006J\326dD\215_U`ji{"
      "\253\227\257;l\037\257\2638U\313\372\263j\222\f\201\240\242-"
      "g\b\231\016\215\215\026\331w\\\370\316\260j\235\'\223\357\035\240H\331"
      "\275\331\257\022$\215\026%\213\000\000\000\000\000\000\000\000\000",
      284);
  res = syscall(__NR_memfd_create, /*name=*/0x20000ec0ul,
                /*flags=MFD_ALLOW_SEALING*/ 2ul);
  if (res != -1)
    r[1] = res;
  //  ftruncate arguments: [
  //    fd: fd (resource)
  //    len: intptr = 0xffff (8 bytes)
  //  ]
  syscall(__NR_ftruncate, /*fd=*/r[1], /*len=*/0xfffful);
  //  fcntl$addseals arguments: [
  //    fd: fd (resource)
  //    cmd: const = 0x409 (8 bytes)
  //    seals: seal_types = 0x7 (8 bytes)
  //  ]
  syscall(__NR_fcntl, /*fd=*/r[1], /*cmd=*/0x409ul,
          /*seals=F_SEAL_GROW|F_SEAL_SHRINK|F_SEAL_SEAL*/ 7ul);
  //  ioctl$UDMABUF_CREATE arguments: [
  //    fd: fd_udambuf (resource)
  //    cmd: const = 0x40187542 (4 bytes)
  //    arg: ptr[in, udmabuf_create] {
  //      udmabuf_create {
  //        memfd: fd_memfd (resource)
  //        flags: int32 = 0x0 (4 bytes)
  //        offset: udmabuf_offset_size = 0x0 (8 bytes)
  //        size: udmabuf_offset_size = 0x1000 (8 bytes)
  //      }
  //    }
  //  ]
  //  returns fd_dma_buf
  *(uint32_t*)0x20000000 = r[1];
  *(uint32_t*)0x20000004 = 0;
  *(uint64_t*)0x20000008 = 0;
  *(uint64_t*)0x20000010 = 0x1000;
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40187542,
                /*arg=*/0x20000000ul);
  if (res != -1)
    r[2] = res;
  //  fcntl$dupfd arguments: [
  //    fd: fd (resource)
  //    cmd: fcntl_dupfd = 0x0 (8 bytes)
  //    arg: fd (resource)
  //  ]
  //  returns fd
  res = syscall(__NR_fcntl, /*fd=*/r[2], /*cmd=*/0ul, /*arg=*/r[1]);
  if (res != -1)
    r[3] = res;
  //  mount$9p_fd arguments: [
  //    src: const = 0x0 (8 bytes)
  //    dst: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 2f 2e 2e 2f 66 69 6c 65 30 00} (length
  //      0x11)
  //    }
  //    type: ptr[in, buffer] {
  //      buffer: {39 70 00} (length 0x3)
  //    }
  //    flags: mount_flags = 0x0 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYBLOB: buffer: {74 72 61 6e 73 3d 66 64 2c 72 66 64 6e 6f 3d}
  //          (length 0xf)
  //        }
  //        union ANYUNION {
  //          ANYRESHEX: ANYRES64 (resource)
  //        }
  //        union ANYUNION {
  //          ANYBLOB: buffer: {2c 77 66 64 6e 6f 3d} (length 0x7)
  //        }
  //        union ANYUNION {
  //          ANYRESOCT: ANYRES64 (resource)
  //        }
  //      }
  //    }
  //  ]
  memcpy((void*)0x20000080, "./file0/../file0\000", 17);
  memcpy((void*)0x20000240, "9p\000", 3);
  memcpy((void*)0x20000040, "trans=fd,rfdno=", 15);
  sprintf((char*)0x2000004f, "0x%016llx", (long long)r[3]);
  memcpy((void*)0x20000061, ",wfdno=", 7);
  sprintf((char*)0x20000068, "%023llo", (long long)r[1]);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x20000080ul, /*type=*/0x20000240ul,
          /*flags=*/0ul, /*opts=*/0x20000040ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-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=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  const char* reason;
  (void)reason;
  loop();
  return 0;
}