// https://syzkaller.appspot.com/bug?id=e345e7990adf39a628c60cf7cc31326dde8cba66
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

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

#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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

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

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

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

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static 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[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  syz_mount_image$exfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {65 78 66 61 74 00} (length 0x6)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {e9 1f 71 89 59 1e 92 33 61 4b 00} (length 0xb)
  //    }
  //    flags: mount_flags = 0xa18088 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //      }
  //    }
  //    chdir: int8 = 0x21 (1 bytes)
  //    size: len = 0x1517 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x1517)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000080, "exfat\000", 6));
  NONFAILING(
      memcpy((void*)0x200000000240, "\351\037q\211Y\036\2223aK\000", 11));
  NONFAILING(memcpy(
      (void*)0x2000000019c0,
      "\x78\x9c\xec\xdc\x0b\x98\x4e\x55\xfb\x30\xf0\xfb\x5e\x6b\x6d\xc6\x34\xf1"
      "\x34\xc9\x61\x58\x6b\xdd\x9b\x27\x0d\x96\x43\x92\x1c\x92\xe4\x90\x24\xc9"
      "\x2b\x49\x4e\x09\xa1\x49\x92\x84\xc4\x38\x4b\x1a\x92\x24\xc7\x49\x72\x18"
      "\x42\x72\x98\xc6\xa4\x71\x3e\x1f\x72\x4e\x92\xa4\x49\x92\x90\x90\xb0\xbe"
      "\x4b\x7f\x7d\xde\xb7\xf7\xd0\xf7\xfe\xff\x7d\x9f\xeb\x7b\xe7\xfe\x5d\xd7"
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      "\x7c\x71\x1f\xf5\x37\xfb\x12\xfe\x16\x9f\xe8\x4b\xfa\x52\xbe\xb4\x77\xbe"
      "\x8c\xcf\xed\xcb\xf9\xf2\xfe\x56\x5f\xc1\xdf\xe6\x2b\xfa\xdb\x7d\x25\x7f"
      "\x87\xaf\xec\xab\xf8\xaa\xfe\x31\xdf\xc2\xb7\xf4\xad\x7c\x6b\xdf\xc6\x3f"
      "\xee\xdb\xfa\x27\x7c\x3b\xdf\xde\x77\xf0\x4f\xfa\x8e\xbe\x93\xef\xec\x9f"
      "\xf2\x49\xfe\x69\xdf\xc5\x3f\xe3\xbb\xfa\x67\x7d\x37\xff\x9c\xef\xee\x9f"
      "\xf7\x3d\xfc\x0b\xbe\xa7\xef\xe5\x7b\xfb\x17\x7d\x1f\xff\x92\xef\xeb\xfb"
      "\xf9\x64\xdf\xdf\x0f\xf0\x03\xfd\x20\x3f\xd8\x0f\xf1\x43\xfd\x30\xff\xb2"
      "\x1f\xee\x5f\xf1\x23\xfc\xab\x3e\xc5\x8f\xf4\xa3\xfc\x6b\x7e\xb4\x7f\xdd"
      "\x8f\xf1\x6f\xf8\xb1\xfe\x4d\x3f\xce\xbf\xe5\xc7\xfb\x09\x7e\xa2\x9f\xe4"
      "\x27\xfb\x29\x3e\xd5\xbf\xed\xa7\xfa\x77\xfc\x34\xff\xae\x9f\xee\x67\xf8"
      "\x99\x7e\x96\x4f\xf3\xb3\xfd\x1c\xff\x9e\x9f\xeb\xe7\xf9\xf9\xfe\x7d\xbf"
      "\xc0\x7f\xe0\x17\xfa\x45\x7e\xb1\x5f\xe2\xd3\xfd\x87\x3e\xc3\x2f\xf5\x99"
      "\xfe\x23\xbf\xcc\x7f\xec\xb3\xfc\x72\xbf\xc2\xaf\xf4\xab\xfc\x6a\xbf\xc6"
      "\xaf\xf5\xeb\xfc\x7a\xbf\xc1\x6f\xf4\x9b\xfc\x66\xbf\xc5\x6f\xf5\xdb\xfc"
      "\x27\x7e\xbb\xdf\xe1\x77\xfa\x5d\x7e\xb7\xdf\xe3\xf7\xfa\x4f\xfd\x3e\xff"
      "\x99\xdf\xef\x3f\xf7\x07\xfc\x17\xfe\xa0\xff\xd2\x1f\xf2\x5f\xf9\xc3\xfe"
      "\x6b\x9f\xed\xbf\xf1\x47\xb2\xbe\xf5\x47\xfd\x77\xfe\x98\xff\xde\x1f\xf7"
      "\x3f\xf8\x13\xfe\xa4\x3f\xe5\x7f\xf4\xa7\xfd\x4f\xfe\x8c\x3f\xeb\xcf\xf9"
      "\x9f\xfd\x79\xff\x8b\xbf\xe0\x2f\xfa\x4b\xff\xe6\x6f\xd6\x6a\xff\x19\xb7"
      "\xce\x19\x63\x8c\x31\xc6\xfe\x3f\x34\xf0\x0f\xd6\xf7\xff\x07\x8f\x29\x00"
      "\x10\x57\xc6\xbf\x78\xef\xaf\xdf\x51\x38\xfb\xaf\xd7\x4b\x00\xd8\x54\xe0"
      "\xbf\xc6\x83\x45\x42\xc7\x08\x00\x3c\xdd\xaf\xc7\xc3\xbf\x2d\xb5\x6a\x25"
      "\x27\x27\x5f\x79\x6e\x96\x84\xa0\xf8\x22\x00\x88\xfc\x6e\x03\x57\xe2\xe5"
      "\xd0\x01\x3a\x41\x12\xb4\x87\xf2\xff\xb0\xbe\xc1\xa2\xd7\x79\xfa\x17\xf3"
      "\x67\x8c\xa1\xc9\xd1\xdb\x01\x62\xff\x2a\x27\x06\xae\xc6\x57\xe7\xff\xf2"
      "\x9f\xcc\xff\xf8\x93\xe3\x32\x2a\x85\xe7\xe2\xff\x79\xfd\xd1\x45\x00\x89"
      "\xc5\xaf\xe6\x5c\xbe\x0a\xff\x2d\x5e\x0e\x1d\x7e\xfd\xea\xb0\x3d\x54\xf8"
      "\x27\xf3\x17\x6c\xfb\xaf\xea\xcf\x92\x90\xe7\xab\x54\x80\x76\x7f\x95\x13"
      "\x07\x00\xed\xf2\xfc\xbe\xfe\xb2\xf0\x04\x3c\x03\x49\x7f\xf3\xcc\x06\xff"
      "\x70\x9b\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x72\x9e\xc1\xa2\x6a\xb7\x3f\xb8"
      "\xfe\xfc\xf5\xfa\x3c\x41\x5d\xcd\xc9\x0d\x57\xe3\x3f\xba\x3e\x67\x8c\x31"
      "\xc6\x18\x63\x8c\x31\xc6\xd8\xb5\xf7\x5c\xaf\xde\x4f\x3d\x9e\x94\xd4\xbe"
      "\x1b\x0f\x78\xc0\x83\x1c\x36\xe8\xf4\x2f\x9e\x73\xad\xff\x67\x62\x8c\x31"
      "\xc6\x18\x63\x8c\xfd\xd9\xae\x7e\xe8\xbf\xfa\x58\x9e\x6b\x59\x10\x63\x8c"
      "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
      "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
      "\x96\x03\xfd\xbf\xf8\x4b\x63\xd7\x7a\x1f\x19\x63\x8c\x31\xc6\x18\x63\x8c"
      "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
      "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
      "\xc6\x18\x63\x8c\xb1\x6b\xed\x7f\x05\x00\x00\xff\xff\xc1\xda\x33\xe3",
      5399));
  NONFAILING(syz_mount_image(
      /*fs=*/0x200000000080, /*dir=*/0x200000000240,
      /*flags=MS_I_VERSION|MS_POSIXACL|MS_SILENT|MS_RELATIME|MS_NOEXEC|0x80*/
      0xa18088, /*opts=*/0x200000000140, /*chdir=*/0x21, /*size=*/0x1517,
      /*img=*/0x2000000019c0));
  //  syz_mount_image$exfat arguments: [
  //    fs: nil
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 62 75 73 00} (length 0x6)
  //    }
  //    flags: mount_flags = 0x4800 (8 bytes)
  //    opts: nil
  //    chdir: int8 = 0x0 (1 bytes)
  //    size: len = 0x0 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x0)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000500, "./bus\000", 6));
  NONFAILING(syz_mount_image(/*fs=*/0, /*dir=*/0x200000000500,
                             /*flags=MS_REC|MS_NODIRATIME*/ 0x4800, /*opts=*/0,
                             /*chdir=*/0, /*size=*/0, /*img=*/0x200000000240));
  //  creat arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    mode: open_mode = 0x71283578ac7c5cd (8 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000180, "./file2\000", 8));
  syscall(
      __NR_creat, /*file=*/0x200000000180ul,
      /*mode=S_IXOTH|S_IROTH|S_IXGRP|S_IXUSR|S_IWUSR|S_IRUSR|0x71283578ac7c400*/
      0x71283578ac7c5cdul);
  //  truncate arguments: [
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 32 00} (length 0x8)
  //    }
  //    len: intptr = 0xf (8 bytes)
  //  ]
  NONFAILING(memcpy((void*)0x200000000040, "./file2\000", 8));
  syscall(__NR_truncate, /*file=*/0x200000000040ul, /*len=*/0xful);
  //  chdir arguments: [
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //  ]
  NONFAILING(memcpy((void*)0x200000000140, "./file0\000", 8));
  syscall(__NR_chdir, /*dir=*/0x200000000140ul);
  //  openat$cgroup_ro arguments: [
  //    fd: fd_cgroup (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {70 69 64 73 2e 63 75 72 72 65 6e 74 00} (length 0xd)
  //    }
  //    flags: const = 0x275a (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x2000000000c0, "pids.current\000", 13));
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x2000000000c0ul,
          /*flags=*/0x275a, /*mode=*/0);
  //  openat arguments: [
  //    fd: fd_dir (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: open_flags = 0x42 (4 bytes)
  //    mode: open_mode = 0x147 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000880, "./file1\000", 8));
  syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000880ul,
          /*flags=O_CREAT|O_RDWR*/ 0x42,
          /*mode=S_IXOTH|S_IWOTH|S_IROTH|S_IXUSR|S_IRUSR*/ 0x147);
  //  openat$dir arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    file: ptr[in, buffer] {
  //      buffer: {2e 00} (length 0x2)
  //    }
  //    flags: open_flags = 0x0 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000000, ".\000", 2));
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                /*file=*/0x200000000000ul, /*flags=*/0, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  unlinkat arguments: [
  //    fd: fd_dir (resource)
  //    path: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 31 00} (length 0x8)
  //    }
  //    flags: unlinkat_flags = 0x200 (8 bytes)
  //  ]
  NONFAILING(memcpy((void*)0x200000000040, "./file1\000", 8));
  syscall(__NR_unlinkat, /*fd=*/r[0], /*path=*/0x200000000040ul,
          /*flags=AT_REMOVEDIR*/ 0x200ul);
  //  quotactl$Q_SETINFO arguments: [
  //    cmd: quota_cmd_setinfo = 0xffffffff80000602 (8 bytes)
  //    special: nil
  //    id: uid (resource)
  //    addr: nil
  //  ]
  syscall(__NR_quotactl, /*cmd=Q_SETINFO_PRJ*/ 0xffffffff80000602ul,
          /*special=*/0ul, /*id=*/0, /*addr=*/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;
  install_segv_handler();
  loop();
  return 0;
}