// https://syzkaller.appspot.com/bug?id=342faf93b11e37478cccf163a7c702161fc39f43
// 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;
}

const int kInitNetNsFd = 201;

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  return syscall(__NR_socket, domain, type, proto);
}

//% 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_init_net_socket$bt_l2cap arguments: [
  //    fam: const = 0x1f (8 bytes)
  //    type: bt_l2cap_type = 0x2 (8 bytes)
  //    proto: const = 0x0 (8 bytes)
  //  ]
  //  returns sock_bt_l2cap
  NONFAILING(
      syz_init_net_socket(/*fam=*/0x1f, /*type=SOCK_DGRAM*/ 2, /*proto=*/0));
  //  syz_mount_image$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 = 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 {
  //              usrquota: buffer: {75 73 72 71 75 6f 74 61} (length 0x8)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              noblock_validity: buffer: {6e 6f 62 6c 6f 63 6b 5f 76 61 6c 69
  //              64 69 74 79} (length 0x10)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              bh: buffer: {62 68} (length 0x2)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              max_batch_time: fs_opt["max_batch_time", fmt[hex, int32]] {
  //                name: buffer: {6d 61 78 5f 62 61 74 63 68 5f 74 69 6d 65}
  //                (length 0xe) eq: const = 0x3d (1 bytes) val: int32 = 0x8c9
  //                (18 bytes)
  //              }
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              debug: buffer: {64 65 62 75 67} (length 0x5)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //          fs_opt_elem[ext4_options] {
  //            elem: union ext4_options {
  //              inlinecrypt: buffer: {69 6e 6c 69 6e 65 63 72 79 70 74}
  //              (length 0xb)
  //            }
  //            comma: const = 0x2c (1 bytes)
  //          }
  //        }
  //        common: array[fs_opt_elem[fs_options_common]] {
  //        }
  //        null: const = 0x0 (1 bytes)
  //      }
  //    }
  //    chdir: int8 = 0x6 (1 bytes)
  //    size: len = 0x5fc (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x5fc)
  //    }
  //  ]
  //  returns fd_dir
  NONFAILING(memcpy((void*)0x200000000140, "ext4\000", 5));
  NONFAILING(memcpy((void*)0x200000000040, "./file0\000", 8));
  NONFAILING(memcpy((void*)0x200000000080, "usrquota", 8));
  NONFAILING(*(uint8_t*)0x200000000088 = 0x2c);
  NONFAILING(memcpy((void*)0x200000000089, "noblock_validity", 16));
  NONFAILING(*(uint8_t*)0x200000000099 = 0x2c);
  NONFAILING(memcpy((void*)0x20000000009a, "bh", 2));
  NONFAILING(*(uint8_t*)0x20000000009c = 0x2c);
  NONFAILING(memcpy((void*)0x20000000009d, "max_batch_time", 14));
  NONFAILING(*(uint8_t*)0x2000000000ab = 0x3d);
  NONFAILING(sprintf((char*)0x2000000000ac, "0x%016llx", (long long)0x8c9));
  NONFAILING(*(uint8_t*)0x2000000000be = 0x2c);
  NONFAILING(memcpy((void*)0x2000000000bf, "debug", 5));
  NONFAILING(*(uint8_t*)0x2000000000c4 = 0x2c);
  NONFAILING(memcpy((void*)0x2000000000c5, "inlinecrypt", 11));
  NONFAILING(*(uint8_t*)0x2000000000d0 = 0x2c);
  NONFAILING(*(uint8_t*)0x2000000000d1 = 0);
  NONFAILING(memcpy(
      (void*)0x200000000c00,
      "\x78\x9c\xec\xdd\xcf\x6b\x1c\x65\x1f\x00\xf0\xef\xcc\x26\x79\x93\x36\xaf"
      "\x69\x45\xc4\x16\xc5\x80\x87\x16\xa4\x69\x52\x8b\x55\x2f\xb6\xf5\x60\x0f"
      "\x05\x0b\xf6\x20\xe2\xa1\xa1\x49\x6a\xe8\xf6\x07\x4d\x0a\xb6\x16\x4c\xc1"
      "\x83\x82\x82\x88\x57\x91\x5e\xfc\x07\xbc\x4b\xef\xde\x44\x50\x6f\x9e\x85"
      "\x2a\x52\x51\x50\xe9\xca\xec\xce\xb6\x9b\x64\x37\x5d\xd3\xec\x4e\x9a\xf9"
      "\x7c\x60\xb3\xcf\xf3\xcc\xec\x3e\xcf\x77\x27\x4f\xe6\x99\x99\x3c\x3b\x01"
      "\x94\xd6\x78\xf6\x23\x8d\xd8\x15\x71\xe7\x54\x12\x31\xd6\xb2\x6c\x34\x1a"
      "\x0b\xc7\xf3\xf5\x6e\xff\x76\xed\x74\xf6\x48\xa2\x56\x7b\xfd\xd7\x24\x92"
      "\xbc\xac\xb9\x7e\x92\x3f\x6f\xcf\x33\xc3\x11\xf1\xed\xd1\x88\x47\x2b\xab"
      "\xeb\x5d\xb8\x72\xf5\xec\x74\xb5\xd6\xf0\x5e\xc4\xfe\xc5\x73\x17\xf7\x2f"
      "\x5c\xb9\xba\x6f\xfe\xdc\xf4\x99\xd9\x33\xb3\xe7\xa7\x0e\xbc\x70\xf0\xd0"
      "\xe4\x8b\x53\x07\xa7\x36\x24\xce\xed\xf9\xf3\xb1\xe3\xaf\x3d\xf9\xf1\xfb"
      "\x6f\x3f\x3f\xf7\x5d\x75\x5f\x12\x87\xe3\xe4\xe0\xbb\x33\xb1\x22\x8e\x8d"
      "\x32\x1e\xe3\x71\x27\x0f\xb1\xb5\x7c\x20\x22\x0e\x65\x89\x36\x9f\xcb\xc3"
      "\x66\x0b\x84\x50\x6a\x95\xfc\xf7\x71\x30\x22\x1e\x8f\xb1\xa8\xd4\x73\x0d"
      "\x63\x31\xff\x51\xa1\x8d\x03\x7a\xaa\x56\x89\xa8\x01\x25\x95\xe8\xff\x50"
      "\x52\xcd\x71\x40\xf3\xd8\xbe\xbb\xe3\xe0\x93\x3d\x1e\x95\xf4\xcf\xad\x23"
      "\x8d\x03\xa0\xd5\xf1\x0f\x34\xce\x8d\xc4\x70\xfd\xd8\x68\xdb\xed\xa4\xe5"
      "\xc8\xa8\x71\x6e\x63\xc7\x06\xd4\x9f\xd5\xf1\xcf\xb5\xdd\x9f\x67\x8f\x58"
      "\x76\x1e\xe2\xcf\xbb\x5b\x67\x60\x03\xea\xe9\x64\xe9\x7a\x44\x3c\xd1\x2e"
      "\xfe\xa4\xde\xb6\x1d\xf5\x48\xb3\xf8\xd3\x65\xed\x48\x22\x62\x32\x22\x86"
      "\xf2\xf6\xbd\xf2\x00\x6d\x48\x5a\xd2\xbd\x38\x0f\xb3\x96\xf5\xc6\x9f\x46"
      "\xc4\xe1\xfc\x39\x2b\x3f\xba\xce\xfa\xc7\x57\xe4\xfb\x1d\x3f\x00\xe5\x74"
      "\xf3\x48\xbe\x23\x5f\xca\x72\xf7\xf6\x7f\xd9\xd8\xa3\x39\xfe\x89\x36\xe3"
      "\x9f\xd1\x36\xfb\xae\xf5\x28\x7a\xff\xd7\x79\xfc\xd7\xdc\xdf\x0f\xd7\xcf"
      "\x91\xa7\x2b\xc6\x61\xd9\x98\xe5\x44\xfb\xb7\x1c\x5c\x59\xf0\xd3\x87\xc7"
      "\x3e\xed\x54\x7f\xeb\xf8\x2f\x7b\x64\xf5\x37\xc7\x82\xfd\x70\xeb\x7a\xc4"
      "\xee\x15\xf1\x7f\x90\x05\x9b\x8f\x7f\xb2\xf8\x93\x36\xdb\x3f\x5b\xe5\xd4"
      "\xe1\xee\xea\x78\xf5\xfb\x5f\x8e\x75\x5a\x56\x74\xfc\xb5\x1b\x11\x7b\xda"
      "\x1e\xff\xdc\x1b\x95\x66\xa9\x35\xae\x4f\xee\x9f\x9b\xaf\xce\x4e\x36\x7e"
      "\xb6\xad\xe3\xeb\x6f\xde\xfa\xb2\x53\xfd\x45\xc7\x9f\x6d\xff\x6d\x1d\xe2"
      "\x6f\xd9\xfe\xe9\xca\xd7\x65\x9f\xc9\xc5\x2e\xeb\xf8\xea\xc4\x8d\x73\x9d"
      "\x96\x8d\xde\x37\xfe\xf4\xe7\xa1\xa4\x71\xbc\x39\x94\x97\xbc\x33\xbd\xb8"
      "\x78\x69\x2a\x62\x28\x39\x9e\xaf\xd2\x52\x7e\x60\xed\xb6\x34\xd7\x69\xbe"
      "\x47\x16\xff\xde\x67\xda\xf7\xff\x65\xbf\xff\xd7\x97\xbf\xcf\x48\xf3\x4f"
      "\x66\x17\x2e\xbe\x71\xf6\x76\xa7\x65\xeb\xd9\xfe\x2d\x17\x93\xef\xd4\xba"
      "\x6c\x43\x27\x59\xfc\x33\xf7\xdf\xfe\xab\xfa\x7f\x56\xf6\x49\x97\x75\xfc"
      "\xf1\xe6\xe5\xa7\x3a\x2d\x5b\x2b\xfe\x91\x07\x09\x0c\x00\x00\x00\x00\x00"
      "\x00\x4a\x28\xad\x5f\x83\x4d\xd2\x89\xbb\xe9\x34\x9d\x98\x68\xcc\x97\x7d"
      "\x2c\xb6\xa5\xd5\x0b\x0b\x8b\xcf\xce\x5d\xb8\x7c\x7e\x26\x62\x6f\xfd\xff"
      "\x21\x07\xd3\xe6\x95\xee\xb1\x46\x3e\xc9\xf2\x53\xf9\xff\xc3\x36\xf3\x07"
      "\x56\xe4\x9f\x8b\x88\x9d\x11\xf1\x59\x65\xa4\x9e\x9f\x38\x7d\xa1\x3a\x53"
      "\x74\xf0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb0"
      "\x49\x6c\xcf\xe7\xff\x37\xef\x53\xfd\x7b\xa5\x31\xff\x1f\x28\x89\x5e\xde"
      "\x60\x0e\xd8\xdc\xf4\x7f\x28\xaf\x7a\xff\x5f\x75\x8b\x27\xa0\x0c\xec\xff"
      "\xa1\xbc\xf4\x7f\x28\x2f\xfd\x1f\xca\x4b\xff\x87\xf2\xd2\xff\xa1\xbc\xf4"
      "\x7f\x28\x2f\xfd\x1f\xca\x4b\xff\x07\x00\x00\x00\x80\x2d\x69\xe7\xd3\x37"
      "\x7f\x4c\x22\x62\xe9\xa5\x91\xfa\x23\x33\x94\x2f\x33\x23\x08\xb6\xb6\xc1"
      "\xa2\x1b\x00\x14\xa6\x52\x74\x03\x80\xc2\xdc\xbd\xf4\x6f\xb0\x0f\xa5\xd3"
      "\xd5\xf8\xff\xaf\xfc\xcb\x01\x7b\xdf\x1c\xa0\x00\x49\xbb\xc2\xfa\xe0\xa0"
      "\xb6\x76\xe7\xbf\xd9\xf6\x95\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40"
      "\x0f\xec\xd9\xd5\x79\xfe\xbf\xb9\xc1\xb0\xb5\x99\xf6\x07\xe5\xf5\x00\xf3"
      "\xff\x7d\x75\x00\x3c\xe4\x7c\xf5\x3f\x94\x97\x63\x7c\xe0\x7e\xb3\xf8\x87"
      "\x3b\x2d\x30\xff\x1f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfa\x66\xb4"
      "\xfe\x48\xd2\x89\x7c\x2e\xf0\x68\xa4\xe9\xc4\x44\xc4\xff\x23\x62\x47\x0c"
      "\x26\x73\xf3\xd5\xd9\xc9\x88\x78\x24\x22\x7e\xa8\x0c\xfe\x2f\xcb\x4f\x15"
      "\xdd\x68\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd8"
      "\x62\x16\xae\x5c\x3d\x3b\x5d\xad\xce\x5e\x6a\x4d\xfc\xbd\xaa\x64\x6b\x27"
      "\x9a\x77\x41\xed\x43\x5d\x2f\xc7\x7f\x7c\x55\x24\xfd\xff\x58\x46\x22\xa2"
      "\xf0\x8d\xd2\xb3\xc4\x40\x4b\x49\x12\xb1\x94\x6d\xf9\x4d\xd1\xb0\x4b\x0b"
      "\xb1\x39\x9a\x51\x4f\x14\xfc\x87\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x4a\xa8\x65\xee\x71\x7b\xbb\xbf\xe8\x73\x8b\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa0\xff\xee\xdd\xff\xbf\x77"
      "\x89\xa2\x63\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x1e\x4e\xff\x06\x00\x00\xff\xff\xb5\x79"
      "\x40\x2c",
      1532));
  NONFAILING(syz_mount_image(/*fs=*/0x200000000140, /*dir=*/0x200000000040,
                             /*flags=*/0, /*opts=*/0x200000000080, /*chdir=*/6,
                             /*size=*/0x5fc, /*img=*/0x200000000c00));
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: nil
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0ul, /*f=*/0ul);
  //  openat$sysfs arguments: [
  //    fd: const = 0xffffffffffffff9c (8 bytes)
  //    dir: ptr[in, buffer] {
  //      buffer: {2f 73 79 73 2f 70 6f 77 65 72 2f 72 65 73 75 6d 65} (length
  //      0x11)
  //    }
  //    flags: open_flags = 0x88102 (4 bytes)
  //    mode: open_mode = 0x0 (2 bytes)
  //  ]
  //  returns fd
  NONFAILING(memcpy((void*)0x200000000100, "/sys/power/resume", 17));
  res = syscall(
      __NR_openat, /*fd=*/0xffffffffffffff9cul, /*dir=*/0x200000000100ul,
      /*flags=O_NOCTTY|O_LARGEFILE|O_CLOEXEC|O_RDWR*/ 0x88102, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$cgroup_int arguments: [
  //    fd: fd_cgroup_int (resource)
  //    buf: ptr[in, int64] {
  //      int64 = 0x700 (18 bytes)
  //    }
  //    len: bytesize = 0xfdef (8 bytes)
  //  ]
  NONFAILING(sprintf((char*)0x200000000040, "0x%016llx", (long long)0x700));
  syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x200000000040ul, /*len=*/0xfdeful);
  //  sendmsg$nl_route arguments: [
  //    fd: sock_nl_route (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
  //      msghdr_netlink[netlink_msg_route] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: nil
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x80 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x0 (8 bytes)
  //  ]
  NONFAILING(*(uint64_t*)0x200000000080 = 0);
  NONFAILING(*(uint32_t*)0x200000000088 = 0);
  NONFAILING(*(uint64_t*)0x200000000090 = 0);
  NONFAILING(*(uint64_t*)0x200000000098 = 1);
  NONFAILING(*(uint64_t*)0x2000000000a0 = 0);
  NONFAILING(*(uint64_t*)0x2000000000a8 = 0);
  NONFAILING(*(uint32_t*)0x2000000000b0 = 0x80);
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000080ul,
          /*f=*/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();
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}