// https://syzkaller.appspot.com/bug?id=4246cd1fc5d234538b6885295a50fa3465d74c72
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.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/futex.h>
#include <linux/loop.h>

#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#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 void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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,
                             unsigned long extra_space, 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;
  }
  if (extra_space) {
    off_t cur = lseek(memfd, 0, SEEK_END);
    if (cur >= 0 && ftruncate(memfd, cur + extra_space)) {
    }
  }
  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_RDONLY);
  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);
    unsigned long extra_space = strncmp(fs, "ext", 3) == 0 ? (16 << 20) : 0;
    if (setup_loop_device(data, size, extra_space, 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) {
    if (chdir(target) == -1) {
      err = errno;
      close(res);
      res = -1;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

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

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

static void kill_and_wait(int pid, int* status)
{
  kill(-pid, SIGKILL);
  kill(pid, SIGKILL);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

static void reset_loop()
{
  char buf[64];
  snprintf(buf, sizeof(buf), "/dev/loop%llu", procid);
  int loopfd = open(buf, O_RDONLY);
  if (loopfd != -1) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
}

static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/sys/kernel/debug/failslab/task-filter", "Y"},
      {"/sys/kernel/debug/fail_page_alloc/task-filter", "Y"},
      {"/sys/kernel/debug/fail_futex/task-filter", "Y"},
      {"/sys/kernel/debug/fail_usercopy/task-filter", "Y"},
      {"/sys/kernel/debug/fail_make_request/task-filter", "Y"},
      {"/sys/kernel/debug/fail_io_timeout/task-filter", "Y"},
      {"/sys/kernel/debug/fail_iommufd/task-filter", "Y"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 8; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

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

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 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]] {
    //        }
    //        common: array[fs_opt_elem[fs_options_common]] {
    //        }
    //        null: const = 0x0 (1 bytes)
    //      }
    //    }
    //    chdir: int8 = 0x1 (1 bytes)
    //    size: len = 0x77f (8 bytes)
    //    img: ptr[in, buffer] {
    //      buffer: (compressed buffer with length 0x77f)
    //    }
    //  ]
    //  returns fd_ext4_mnt
    memcpy((void*)0x200000000780, "ext4\000", 5);
    memcpy((void*)0x200000000240, "./file0\000", 8);
    *(uint8_t*)0x200000000000 = 0;
    memcpy(
        (void*)0x200000000f40,
        "\x78\x9c\xec\xdd\xdd\x6b\x5b\xe5\x1f\x00\xf0\xef\x49\xdf\xd6\x6e\xbf"
        "\x5f\x2b\x08\x3a\xaf\x0a\x82\x16\xc6\x52\x3b\xeb\xa6\xe0\xc5\xc4\x0b"
        "\x11\x1c\x0c\xf4\xda\xad\xa4\x59\x99\x4d\x9b\xd1\xa4\x63\x2d\x05\x37"
        "\x44\xf0\x46\x50\xf1\x42\xd0\x9b\x5d\xfb\x32\xef\xbc\xf5\xe5\x56\xff"
        "\x0b\x2f\x64\x63\x6a\x37\x9c\x78\x21\x95\x93\x9e\x74\xd9\x9a\x64\xe9"
        "\xd6\x97\x8d\x7c\x3e\x70\x9a\xe7\xc9\x39\xe9\xf7\xf9\xe6\x39\x2f\xcf"
        "\xc9\x39\x24\x01\x74\xad\xd1\xf4\x4f\x2e\xe2\x60\x44\x7c\x94\x44\x0c"
        "\x67\xcf\x27\x11\xd1\x57\x2b\xf5\x46\x1c\x5f\x5f\xee\xd6\xea\x4a\x21"
        "\x9d\x92\x58\x5b\x7b\xf3\x8f\xa4\xb6\xcc\xcd\xd5\x95\x42\x34\xbc\x26"
        "\xb5\x3f\xab\x3c\x19\x11\x3f\xbe\x1f\x71\x28\xb7\x39\x6e\x65\x69\x79"
        "\x76\xaa\x54\x2a\x2e\x64\xf5\xf1\xea\xdc\xb9\xf1\xca\xd2\xf2\xe1\xb3"
        "\x73\x53\x33\xc5\x99\xe2\xfc\xd1\x89\xc9\xc9\x23\xc7\x5e\x38\x76\x74"
        "\xfb\x72\xfd\xeb\x97\xe5\x03\xd7\x3e\x7e\xed\xd9\x6f\x8e\xff\xf3\xde"
        "\x13\x57\x3e\xfc\x29\x89\xe3\x71\x20\x9b\xd7\x98\xc7\x76\x19\x8d\xd1"
        "\xec\x3d\xe9\x4b\xdf\xc2\x3b\xbc\xba\xdd\xc1\xf6\x58\xb2\xd7\x0d\xe0"
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        "\x3c\xd5\xdb\x2c\xff\x64\xa3\xff\x93\x16\xe3\xdf\x93\x1d\xc6\x78\xfd"
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        "\xaf\xaf\x14\x4d\x7c\xfb\xeb\x67\x43\xad\xe2\x37\xf6\x7f\x3a\xa5\xf1"
        "\xeb\xe7\x02\xbb\x21\xed\xff\xa1\xf6\xf9\x8f\x24\x8d\xf7\x6b\x56\xb6"
        "\x1e\xe3\xe7\xcb\xc3\x3f\xb4\x9a\x77\xef\xfc\x9b\xaf\xff\xfd\xc9\x5b"
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        "\x7e\x18\xfa\x7f\x7a\x4b\xfd\xbf\xf5\xc2\x95\x5b\xb3\x3d\xad\xe2\x77"
        "\xd6\xff\x93\xb5\xd2\x58\xf6\x4c\x27\xfb\xbf\x4e\x1b\xf8\x20\xef\x1d"
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        "\x1b\xde\x8f\xc7\x50\xae\x54\xae\x54\x0f\x9d\x29\x2f\xce\x4f\x47\xed"
        "\xb7\xb2\x47\xa2\x2f\x57\xff\xaa\xcb\xe1\x86\xef\x43\x9d\xc8\xbe\x0f"
        "\xbf\x5e\x3f\x72\x57\xfd\xf9\x88\x78\x2c\x22\x3e\x1d\x18\xac\xd5\xf3"
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        "\xec\x98\x7d\x7b\xdd\x00\x00\x60\xd7\x39\xfe\x03\x40\xf7\xd9\xda\xf1"
        "\x7f\x70\xc7\xda\x01\x00\xec\x1e\xe7\xff\x00\xd0\x7d\x1c\xff\x01\xa0"
        "\xfb\x38\xfe\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\xb0\xc3\x4e\x9e\x38\x91\x4e\x6b\x7f\xaf\xae\x14\xd2\xfa"
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        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x80\x47\xc0\x7f\x01\x00\x00\xff\xff\x51\xe3\x2f\x55",
        1919);
    syz_mount_image(/*fs=*/0x200000000780, /*dir=*/0x200000000240, /*flags=*/0,
                    /*opts=*/0x200000000000, /*chdir=*/1, /*size=*/0x77f,
                    /*img=*/0x200000000f40);
    break;
  case 1:
    //  open arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 62 75 73 00} (length 0x6)
    //    }
    //    flags: open_flags = 0x60142 (8 bytes)
    //    mode: open_mode = 0x0 (8 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000000000, "./bus\000", 6);
    res = syscall(
        __NR_open, /*file=*/0x200000000000ul,
        /*flags=O_NOFOLLOW|O_NOCTTY|O_NOATIME|O_CREAT|O_RDWR*/ 0x60142ul,
        /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    //  open arguments: [
    //    file: ptr[in, buffer] {
    //      buffer: {2e 2f 62 75 73 00} (length 0x6)
    //    }
    //    flags: open_flags = 0x145142 (8 bytes)
    //    mode: open_mode = 0x0 (8 bytes)
    //  ]
    //  returns fd
    memcpy((void*)0x200000007f80, "./bus\000", 6);
    res = syscall(
        __NR_open, /*file=*/0x200000007f80ul,
        /*flags=O_SYNC|O_NOCTTY|O_NOATIME|O_DIRECT|O_CREAT|0x2*/ 0x145142ul,
        /*mode=*/0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    //  ftruncate arguments: [
    //    fd: fd (resource)
    //    len: intptr = 0x2007ffb (8 bytes)
    //  ]
    syscall(__NR_ftruncate, /*fd=*/r[1], /*len=*/0x2007ffbul);
    break;
  case 4:
    //  sendfile arguments: [
    //    fdout: fd (resource)
    //    fdin: fd (resource)
    //    off: nil
    //    count: intptr = 0x4 (8 bytes)
    //  ]
    syscall(__NR_sendfile, /*fdout=*/r[0], /*fdin=*/r[1], /*off=*/0ul,
            /*count=*/4ul);
    break;
  case 5:
    //  sendfile arguments: [
    //    fdout: fd (resource)
    //    fdin: fd (resource)
    //    off: nil
    //    count: intptr = 0x1000000201005 (8 bytes)
    //  ]
    syscall(__NR_sendfile, /*fdout=*/r[0], /*fdin=*/r[1], /*off=*/0ul,
            /*count=*/0x1000000201005ul);
    break;
  case 6:
    //  mmap arguments: [
    //    addr: VMA[0xb36000]
    //    len: len = 0xb36000 (4 bytes)
    //    prot: mmap_prot = 0x2 (8 bytes)
    //    flags: mmap_flags = 0x28011 (8 bytes)
    //    fd: fd (resource)
    //    offset: intptr = 0x0 (8 bytes)
    //  ]
    syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0xb36000,
            /*prot=PROT_WRITE*/ 2ul,
            /*flags=MAP_STACK|MAP_POPULATE|MAP_FIXED|MAP_SHARED*/ 0x28011ul,
            /*fd=*/r[1], /*offset=*/0ul);
    break;
  case 7:
    //  setsockopt$IPT_SO_SET_REPLACE arguments: [
    //    fd: sock_in (resource)
    //    level: const = 0x0 (4 bytes)
    //    opt: const = 0x40 (4 bytes)
    //    val: ptr[in, ipt_replace] {
    //      union ipt_replace {
    //        mangle: ipt_replace_t["mangle", 5, 6, IPT_MANGLE_VALID_HOOKS,
    //        ipt_mangle_matches, ipt_mangle_targets, ipt_hook, ipt_hook,
    //        ipt_hook, ipt_hook, ipt_hook, ipt_hook, ipt_hook, ipt_hook,
    //        ipt_hook, ipt_hook] {
    //          name: buffer: {6d 61 6e 67 6c 65 00 00 00 00 00 00 00 00 00 00
    //          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length 0x20)
    //          valid_hooks: const = 0x44 (4 bytes)
    //          num_entries: const = 0x6 (4 bytes)
    //          size: bytesize = 0x398 (4 bytes)
    //          hook_pre_routing: const = 0x210 (4 bytes)
    //          hook_local_in: const = 0x98 (4 bytes)
    //          hook_forward: const = 0x138 (4 bytes)
    //          hook_local_out: const = 0x2a8 (4 bytes)
    //          hook_post_routing: const = 0x20b (4 bytes)
    //          underflow_pre_routing: const = 0x368 (4 bytes)
    //          underflow_local_in: const = 0x368 (4 bytes)
    //          underflow_forward: const = 0x368 (4 bytes)
    //          underflow_local_out: const = 0x368 (4 bytes)
    //          underflow_post_routing: const = 0x368 (4 bytes)
    //          num_counters: const = 0x6 (4 bytes)
    //          counters: nil
    //          entries: ipt_replace_entries[5, ipt_mangle_matches,
    //          ipt_mangle_targets] {
    //            entries: array[ipt_entry[ipt_mangle_matches,
    //            ipt_mangle_targets]] {
    //              ipt_entry[ipt_mangle_matches, ipt_mangle_targets] {
    //                matches: ipt_entry_matches[ipt_mangle_matches] {
    //                  ip: union ipt_ip_or_uncond {
    //                    ip: ipt_ip {
    //                      src: union ipv4_addr {
    //                        broadcast: const = 0xffffffff (4 bytes)
    //                      }
    //                      dst: union ipv4_addr {
    //                        multicast1: const = 0xe0000001 (4 bytes)
    //                      }
    //                      smsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      dmsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      iniface: buffer: {67 65 6e 65 76 65 31 00 00 00 00
    //                      00 00 00 00 00} (length 0x10) outiface: buffer: {69
    //                      70 36 67 72 65 30 00 00 00 00 00 00 00 00 00}
    //                      (length 0x10) iniface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      outiface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      proto: ipv4_types = 0x0 (2 bytes)
    //                      flags: ipt_ip_flags = 0x0 (1 bytes)
    //                      invflags: ipt_ip_invflags = 0x0 (1 bytes)
    //                    }
    //                  }
    //                  nfcache: const = 0x0 (4 bytes)
    //                  target_offset: len = 0x70 (2 bytes)
    //                  next_offset: len = 0x98 (2 bytes)
    //                  comefrom: const = 0x0 (4 bytes)
    //                  counters: xt_counters {
    //                    pcnt: const = 0x0 (8 bytes)
    //                    bcnt: const = 0x0 (8 bytes)
    //                  }
    //                  matches: array[ipt_mangle_matches] {
    //                  }
    //                }
    //                target: union ipt_mangle_targets {
    //                  inet: union xt_inet_mangle_targets {
    //                    DSCP: xt_target_t["DSCP", xt_DSCP_info, 0] {
    //                      target_size: len = 0x28 (2 bytes)
    //                      name: buffer: {44 53 43 50 00 00 00 00 00 00 00 00
    //                      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //                      (length 0x1d) revision: const = 0x0 (1 bytes) data:
    //                      xt_DSCP_info {
    //                        dscp: int8 = 0x0 (1 bytes)
    //                      }
    //                      pad = 0x0 (7 bytes)
    //                    }
    //                  }
    //                }
    //              }
    //              ipt_entry[ipt_mangle_matches, ipt_mangle_targets] {
    //                matches: ipt_entry_matches[ipt_mangle_matches] {
    //                  ip: union ipt_ip_or_uncond {
    //                    ip: ipt_ip {
    //                      src: union ipv4_addr {
    //                        remote: ipv4_addr_t[const[187, int8]] {
    //                          a0: const = 0xac (1 bytes)
    //                          a1: const = 0x14 (1 bytes)
    //                          a2: const = 0x14 (1 bytes)
    //                          a3: const = 0xbb (1 bytes)
    //                        }
    //                      }
    //                      dst: union ipv4_addr {
    //                        local: ipv4_addr_t[const[170, int8]] {
    //                          a0: const = 0xac (1 bytes)
    //                          a1: const = 0x14 (1 bytes)
    //                          a2: const = 0x14 (1 bytes)
    //                          a3: const = 0xaa (1 bytes)
    //                        }
    //                      }
    //                      smsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      dmsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      iniface: buffer: {62 61 74 61 64 76 5f 73 6c 61 76
    //                      65 5f 31 00 00} (length 0x10) outiface: buffer: {76
    //                      65 74 68 30 5f 76 69 72 74 5f 77 69 66 69 00}
    //                      (length 0x10) iniface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      outiface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      proto: ipv4_types = 0x0 (2 bytes)
    //                      flags: ipt_ip_flags = 0x0 (1 bytes)
    //                      invflags: ipt_ip_invflags = 0x0 (1 bytes)
    //                    }
    //                  }
    //                  nfcache: const = 0x0 (4 bytes)
    //                  target_offset: len = 0x70 (2 bytes)
    //                  next_offset: len = 0xa0 (2 bytes)
    //                  comefrom: const = 0x0 (4 bytes)
    //                  counters: xt_counters {
    //                    pcnt: const = 0x0 (8 bytes)
    //                    bcnt: const = 0x0 (8 bytes)
    //                  }
    //                  matches: array[ipt_mangle_matches] {
    //                  }
    //                }
    //                target: union ipt_mangle_targets {
    //                  TPROXY: xt_target_t["TPROXY", xt_tproxy_target_info, 0]
    //                  {
    //                    target_size: len = 0x30 (2 bytes)
    //                    name: buffer: {54 50 52 4f 58 59 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //                    (length 0x1d) revision: const = 0x0 (1 bytes) data:
    //                    xt_tproxy_target_info {
    //                      mark_mask: int32 = 0x0 (4 bytes)
    //                      mark_value: int32 = 0x0 (4 bytes)
    //                      laddr: union ipv4_addr {
    //                        multicast2: const = 0xe0000002 (4 bytes)
    //                      }
    //                      lport: int16be = 0x0 (2 bytes)
    //                      pad = 0x0 (2 bytes)
    //                    }
    //                  }
    //                }
    //              }
    //              ipt_entry[ipt_mangle_matches, ipt_mangle_targets] {
    //                matches: ipt_entry_matches[ipt_mangle_matches] {
    //                  ip: union ipt_ip_or_uncond {
    //                    uncond: buffer: {00 00 00 00 00 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //                    (length 0x54)
    //                  }
    //                  nfcache: const = 0x0 (4 bytes)
    //                  target_offset: len = 0x70 (2 bytes)
    //                  next_offset: len = 0x98 (2 bytes)
    //                  comefrom: const = 0x0 (4 bytes)
    //                  counters: xt_counters {
    //                    pcnt: const = 0x0 (8 bytes)
    //                    bcnt: const = 0x0 (8 bytes)
    //                  }
    //                  matches: array[ipt_mangle_matches] {
    //                  }
    //                }
    //                target: union ipt_mangle_targets {
    //                  ECN: xt_target_t["ECN", ipt_ECN_info, 0] {
    //                    target_size: len = 0x28 (2 bytes)
    //                    name: buffer: {45 43 4e 00 00 00 00 00 00 00 00 00 00
    //                    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //                    (length 0x1d) revision: const = 0x0 (1 bytes) data:
    //                    ipt_ECN_info {
    //                      operation: ipt_ECN_op = 0x0 (1 bytes)
    //                      ip_ect: int8 = 0x0 (1 bytes)
    //                      tcp: int8 = 0x0 (1 bytes)
    //                    }
    //                    pad = 0x0 (5 bytes)
    //                  }
    //                }
    //              }
    //              ipt_entry[ipt_mangle_matches, ipt_mangle_targets] {
    //                matches: ipt_entry_matches[ipt_mangle_matches] {
    //                  ip: union ipt_ip_or_uncond {
    //                    ip: ipt_ip {
    //                      src: union ipv4_addr {
    //                        rand_addr: int32be = 0x0 (4 bytes)
    //                      }
    //                      dst: union ipv4_addr {
    //                        multicast2: const = 0xe0000002 (4 bytes)
    //                      }
    //                      smsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      dmsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      iniface: buffer: {73 79 7a 6b 61 6c 6c 65 72 30 00
    //                      00 00 00 00 00} (length 0x10) outiface: buffer: {76
    //                      65 74 68 31 5f 74 6f 5f 74 65 61 6d 00 00 00}
    //                      (length 0x10) iniface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      outiface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      proto: ipv4_types = 0x0 (2 bytes)
    //                      flags: ipt_ip_flags = 0x0 (1 bytes)
    //                      invflags: ipt_ip_invflags = 0x0 (1 bytes)
    //                    }
    //                  }
    //                  nfcache: const = 0x0 (4 bytes)
    //                  target_offset: len = 0x70 (2 bytes)
    //                  next_offset: len = 0x98 (2 bytes)
    //                  comefrom: const = 0x0 (4 bytes)
    //                  counters: xt_counters {
    //                    pcnt: const = 0x0 (8 bytes)
    //                    bcnt: const = 0x0 (8 bytes)
    //                  }
    //                  matches: array[ipt_mangle_matches] {
    //                  }
    //                }
    //                target: union ipt_mangle_targets {
    //                  unspec: union xt_unspec_mangle_targets {
    //                    CHECKSUM: xt_target_t["CHECKSUM", xt_CHECKSUM_info, 0]
    //                    {
    //                      target_size: len = 0x28 (2 bytes)
    //                      name: buffer: {43 48 45 43 4b 53 55 4d 00 00 00 00
    //                      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
    //                      (length 0x1d) revision: const = 0x0 (1 bytes) data:
    //                      xt_CHECKSUM_info {
    //                        operation: const = 0x1 (1 bytes)
    //                      }
    //                      pad = 0x0 (7 bytes)
    //                    }
    //                  }
    //                }
    //              }
    //              ipt_entry[ipt_mangle_matches, ipt_mangle_targets] {
    //                matches: ipt_entry_matches[ipt_mangle_matches] {
    //                  ip: union ipt_ip_or_uncond {
    //                    ip: ipt_ip {
    //                      src: union ipv4_addr {
    //                        broadcast: const = 0xffffffff (4 bytes)
    //                      }
    //                      dst: union ipv4_addr {
    //                        initdev: ipv4_addr_initdev {
    //                          a0: const = 0xac (1 bytes)
    //                          a1: const = 0x1e (1 bytes)
    //                          a2: int8 = 0x0 (1 bytes)
    //                          a3: proc = 0x0 (1 bytes)
    //                        }
    //                      }
    //                      smsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      dmsk: ipv4_addr_mask_vals = 0x0 (4 bytes)
    //                      iniface: buffer: {6c 6f 00 00 00 00 00 00 00 00 00
    //                      00 00 00 00 00} (length 0x10) outiface: buffer: {62
    //                      61 74 61 64 76 5f 73 6c 61 76 65 5f 31 00 00}
    //                      (length 0x10) iniface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      outiface_mask: devname_mask {
    //                        lo: devname_mask_values = 0x0 (1 bytes)
    //                        pad = 0x0 (15 bytes)
    //                      }
    //                      proto: ipv4_types = 0x0 (2 bytes)
    //                      flags: ipt_ip_flags = 0x0 (1 bytes)
    //                      invflags: ipt_ip_invflags = 0x0 (1 bytes)
    //                    }
    //                  }
    //                  nfcache: const = 0x0 (4 bytes)
    //                  target_offset: len = 0x70 (2 bytes)
    //                  next_offset: len = 0x98 (2 bytes)
    //                  comefrom: const = 0x0 (4 bytes)
    //                  counters: xt_counters {
    //                    pcnt: const = 0x0 (8 bytes)
    //                    bcnt: const = 0x0 (8 bytes)
    //                  }
    //                  matches: array[ipt_mangle_matches] {
    //                  }
    //                }
    //                target: union ipt_mangle_targets {
    //                  common: union ipt_targets {
    //                    unspec: union xt_unspec_targets {
    //                      NFQUEUE1: xt_target_t["NFQUEUE", xt_NFQ_info_v1, 1]
    //                      {
    //                        target_size: len = 0x28 (2 bytes)
    //                        name: buffer: {4e 46 51 55 45 55 45 00 00 00 00 00
    //                        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                        00} (length 0x1d) revision: const = 0x1 (1 bytes)
    //                        data: xt_NFQ_info_v1 {
    //                          queuenum: int16 = 0x0 (2 bytes)
    //                          queues_total: int16 = 0x0 (2 bytes)
    //                        }
    //                        pad = 0x0 (4 bytes)
    //                      }
    //                    }
    //                  }
    //                }
    //              }
    //            }
    //            underflow: ipt_entry_underflow {
    //              matches: ipt_entry_underflow_matches {
    //                ip: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                00 00 00 00 00 00 00 00 00 00 00 00} (length 0x54)
    //                nfcache: const = 0x0 (4 bytes)
    //                target_offset: len = 0x70 (2 bytes)
    //                next_offset: len = 0x98 (2 bytes)
    //                comefrom: const = 0x0 (4 bytes)
    //                counters: xt_counters {
    //                  pcnt: const = 0x0 (8 bytes)
    //                  bcnt: const = 0x0 (8 bytes)
    //                }
    //              }
    //              target: xt_target_t["", const[NF_ACCEPT_VERDICT, int32], 0]
    //              {
    //                target_size: len = 0x28 (2 bytes)
    //                name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00
    //                00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} (length
    //                0x1d) revision: const = 0x0 (1 bytes) data: const =
    //                0xfffffffe (4 bytes) pad = 0x0 (4 bytes)
    //              }
    //            }
    //          }
    //        }
    //      }
    //    }
    //    len: len = 0x3f8 (8 bytes)
    //  ]
    memcpy((void*)0x200000000480,
           "mangle\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000\000\000\000\000",
           32);
    *(uint32_t*)0x2000000004a0 = 0x44;
    *(uint32_t*)0x2000000004a4 = 6;
    *(uint32_t*)0x2000000004a8 = 0x398;
    *(uint32_t*)0x2000000004ac = 0x210;
    *(uint32_t*)0x2000000004b0 = 0x98;
    *(uint32_t*)0x2000000004b4 = 0x138;
    *(uint32_t*)0x2000000004b8 = 0x2a8;
    *(uint32_t*)0x2000000004bc = 0x20b;
    *(uint32_t*)0x2000000004c0 = 0x368;
    *(uint32_t*)0x2000000004c4 = 0x368;
    *(uint32_t*)0x2000000004c8 = 0x368;
    *(uint32_t*)0x2000000004cc = 0x368;
    *(uint32_t*)0x2000000004d0 = 0x368;
    *(uint32_t*)0x2000000004d4 = 6;
    *(uint64_t*)0x2000000004d8 = 0;
    *(uint32_t*)0x2000000004e0 = htobe32(-1);
    *(uint32_t*)0x2000000004e4 = htobe32(0xe0000001);
    *(uint32_t*)0x2000000004e8 = htobe32(0);
    *(uint32_t*)0x2000000004ec = htobe32(0);
    memcpy((void*)0x2000000004f0, "geneve1\000\000\000\000\000\000\000\000\000",
           16);
    memcpy((void*)0x200000000500, "ip6gre0\000\000\000\000\000\000\000\000\000",
           16);
    *(uint8_t*)0x200000000510 = 0;
    *(uint8_t*)0x200000000520 = 0;
    *(uint16_t*)0x200000000530 = 0;
    *(uint8_t*)0x200000000532 = 0;
    *(uint8_t*)0x200000000533 = 0;
    *(uint32_t*)0x200000000534 = 0;
    *(uint16_t*)0x200000000538 = 0x70;
    *(uint16_t*)0x20000000053a = 0x98;
    *(uint32_t*)0x20000000053c = 0;
    *(uint64_t*)0x200000000540 = 0;
    *(uint64_t*)0x200000000548 = 0;
    *(uint16_t*)0x200000000550 = 0x28;
    memcpy((void*)0x200000000552,
           "DSCP\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000\000\000\000",
           29);
    *(uint8_t*)0x20000000056f = 0;
    *(uint8_t*)0x200000000570 = 0;
    *(uint8_t*)0x200000000578 = 0xac;
    *(uint8_t*)0x200000000579 = 0x14;
    *(uint8_t*)0x20000000057a = 0x14;
    *(uint8_t*)0x20000000057b = 0xbb;
    *(uint8_t*)0x20000000057c = 0xac;
    *(uint8_t*)0x20000000057d = 0x14;
    *(uint8_t*)0x20000000057e = 0x14;
    *(uint8_t*)0x20000000057f = 0xaa;
    *(uint32_t*)0x200000000580 = htobe32(0);
    *(uint32_t*)0x200000000584 = htobe32(0);
    memcpy((void*)0x200000000588, "batadv_slave_1\000\000", 16);
    memcpy((void*)0x200000000598, "veth0_virt_wifi\000", 16);
    *(uint8_t*)0x2000000005a8 = 0;
    *(uint8_t*)0x2000000005b8 = 0;
    *(uint16_t*)0x2000000005c8 = 0;
    *(uint8_t*)0x2000000005ca = 0;
    *(uint8_t*)0x2000000005cb = 0;
    *(uint32_t*)0x2000000005cc = 0;
    *(uint16_t*)0x2000000005d0 = 0x70;
    *(uint16_t*)0x2000000005d2 = 0xa0;
    *(uint32_t*)0x2000000005d4 = 0;
    *(uint64_t*)0x2000000005d8 = 0;
    *(uint64_t*)0x2000000005e0 = 0;
    *(uint16_t*)0x2000000005e8 = 0x30;
    memcpy((void*)0x2000000005ea,
           "TPROXY\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000\000",
           29);
    *(uint8_t*)0x200000000607 = 0;
    *(uint32_t*)0x200000000608 = 0;
    *(uint32_t*)0x20000000060c = 0;
    *(uint32_t*)0x200000000610 = htobe32(0xe0000002);
    *(uint16_t*)0x200000000614 = htobe16(0);
    memset((void*)0x200000000618, 0, 84);
    *(uint32_t*)0x20000000066c = 0;
    *(uint16_t*)0x200000000670 = 0x70;
    *(uint16_t*)0x200000000672 = 0x98;
    *(uint32_t*)0x200000000674 = 0;
    *(uint64_t*)0x200000000678 = 0;
    *(uint64_t*)0x200000000680 = 0;
    *(uint16_t*)0x200000000688 = 0x28;
    memcpy((void*)0x20000000068a,
           "ECN\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000\000\000\000",
           29);
    *(uint8_t*)0x2000000006a7 = 0;
    *(uint8_t*)0x2000000006a8 = 0;
    *(uint8_t*)0x2000000006a9 = 0;
    *(uint8_t*)0x2000000006aa = 0;
    *(uint32_t*)0x2000000006b0 = htobe32(0);
    *(uint32_t*)0x2000000006b4 = htobe32(0xe0000002);
    *(uint32_t*)0x2000000006b8 = htobe32(0);
    *(uint32_t*)0x2000000006bc = htobe32(0);
    memcpy((void*)0x2000000006c0, "syzkaller0\000\000\000\000\000\000", 16);
    memcpy((void*)0x2000000006d0, "veth1_to_team\000\000\000", 16);
    *(uint8_t*)0x2000000006e0 = 0;
    *(uint8_t*)0x2000000006f0 = 0;
    *(uint16_t*)0x200000000700 = 0;
    *(uint8_t*)0x200000000702 = 0;
    *(uint8_t*)0x200000000703 = 0;
    *(uint32_t*)0x200000000704 = 0;
    *(uint16_t*)0x200000000708 = 0x70;
    *(uint16_t*)0x20000000070a = 0x98;
    *(uint32_t*)0x20000000070c = 0;
    *(uint64_t*)0x200000000710 = 0;
    *(uint64_t*)0x200000000718 = 0;
    *(uint16_t*)0x200000000720 = 0x28;
    memcpy((void*)0x200000000722,
           "CHECKSUM\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000",
           29);
    *(uint8_t*)0x20000000073f = 0;
    *(uint8_t*)0x200000000740 = 1;
    *(uint32_t*)0x200000000748 = htobe32(-1);
    *(uint8_t*)0x20000000074c = 0xac;
    *(uint8_t*)0x20000000074d = 0x1e;
    *(uint8_t*)0x20000000074e = 0;
    *(uint8_t*)0x20000000074f = 1 + procid * 1;
    *(uint32_t*)0x200000000750 = htobe32(0);
    *(uint32_t*)0x200000000754 = htobe32(0);
    memcpy((void*)0x200000000758,
           "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
    memcpy((void*)0x200000000768, "batadv_slave_1\000\000", 16);
    *(uint8_t*)0x200000000778 = 0;
    *(uint8_t*)0x200000000788 = 0;
    *(uint16_t*)0x200000000798 = 0;
    *(uint8_t*)0x20000000079a = 0;
    *(uint8_t*)0x20000000079b = 0;
    *(uint32_t*)0x20000000079c = 0;
    *(uint16_t*)0x2000000007a0 = 0x70;
    *(uint16_t*)0x2000000007a2 = 0x98;
    *(uint32_t*)0x2000000007a4 = 0;
    *(uint64_t*)0x2000000007a8 = 0;
    *(uint64_t*)0x2000000007b0 = 0;
    *(uint16_t*)0x2000000007b8 = 0x28;
    memcpy((void*)0x2000000007ba,
           "NFQUEUE\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
           "\000\000\000\000\000\000\000",
           29);
    *(uint8_t*)0x2000000007d7 = 1;
    *(uint16_t*)0x2000000007d8 = 0;
    *(uint16_t*)0x2000000007da = 0;
    memset((void*)0x2000000007e0, 0, 84);
    *(uint32_t*)0x200000000834 = 0;
    *(uint16_t*)0x200000000838 = 0x70;
    *(uint16_t*)0x20000000083a = 0x98;
    *(uint32_t*)0x20000000083c = 0;
    *(uint64_t*)0x200000000840 = 0;
    *(uint64_t*)0x200000000848 = 0;
    *(uint16_t*)0x200000000850 = 0x28;
    memset((void*)0x200000000852, 0, 29);
    *(uint8_t*)0x20000000086f = 0;
    *(uint32_t*)0x200000000870 = 0xfffffffe;
    syscall(__NR_setsockopt, /*fd=*/(intptr_t)-1, /*level=*/0, /*opt=*/0x40,
            /*val=*/0x200000000480ul, /*len=*/0x3f8ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  setup_sysctl();
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}