// https://syzkaller.appspot.com/bug?id=ecc13ed3cdced06f4d20c13ae9973406c7192692
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <netinet/in.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/socket.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/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_link.h>
#include <linux/in6.h>
#include <linux/loop.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/veth.h>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif
#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 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;
}

struct nlmsg {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[4096];
};

static void netlink_init(struct nlmsg* nlmsg, int typ, int flags,
                         const void* data, int size)
{
  memset(nlmsg, 0, sizeof(*nlmsg));
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_type = typ;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags;
  memcpy(hdr + 1, data, size);
  nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size);
}

static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data,
                         int size)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_len = sizeof(*attr) + size;
  attr->nla_type = typ;
  if (size > 0)
    memcpy(attr + 1, data, size);
  nlmsg->pos += NLMSG_ALIGN(attr->nla_len);
}

static void netlink_nest(struct nlmsg* nlmsg, int typ)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_type = typ;
  nlmsg->pos += sizeof(*attr);
  nlmsg->nested[nlmsg->nesting++] = attr;
}

static void netlink_done(struct nlmsg* nlmsg)
{
  struct nlattr* attr = nlmsg->nested[--nlmsg->nesting];
  attr->nla_len = nlmsg->pos - (char*)attr;
}

static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type,
                            int* reply_len, bool dofail)
{
  if (nlmsg->pos > nlmsg->buf + sizeof(nlmsg->buf) || nlmsg->nesting)
    exit(1);
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_len = nlmsg->pos - nlmsg->buf;
  struct sockaddr_nl addr;
  memset(&addr, 0, sizeof(addr));
  addr.nl_family = AF_NETLINK;
  ssize_t n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0,
                     (struct sockaddr*)&addr, sizeof(addr));
  if (n != (ssize_t)hdr->nlmsg_len) {
    if (dofail)
      exit(1);
    return -1;
  }
  n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  if (reply_len)
    *reply_len = 0;
  if (n < 0) {
    if (dofail)
      exit(1);
    return -1;
  }
  if (n < (ssize_t)sizeof(struct nlmsghdr)) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type == NLMSG_DONE)
    return 0;
  if (reply_len && hdr->nlmsg_type == reply_type) {
    *reply_len = n;
    return 0;
  }
  if (n < (ssize_t)(sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type != NLMSG_ERROR) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  errno = -((struct nlmsgerr*)(hdr + 1))->error;
  return -errno;
}

static int netlink_send(struct nlmsg* nlmsg, int sock)
{
  return netlink_send_ext(nlmsg, sock, 0, NULL, true);
}

static int netlink_query_family_id(struct nlmsg* nlmsg, int sock,
                                   const char* family_name, bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = CTRL_CMD_GETFAMILY;
  netlink_init(nlmsg, GENL_ID_CTRL, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, CTRL_ATTR_FAMILY_NAME, family_name,
               strnlen(family_name, GENL_NAMSIZ - 1) + 1);
  int n = 0;
  int err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n, dofail);
  if (err < 0) {
    return -1;
  }
  uint16_t id = 0;
  struct nlattr* attr = (struct nlattr*)(nlmsg->buf + NLMSG_HDRLEN +
                                         NLMSG_ALIGN(sizeof(genlhdr)));
  for (; (char*)attr < nlmsg->buf + n;
       attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
    if (attr->nla_type == CTRL_ATTR_FAMILY_ID) {
      id = *(uint16_t*)(attr + 1);
      break;
    }
  }
  if (!id) {
    errno = EINVAL;
    return -1;
  }
  recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  return id;
}

static void netlink_add_device_impl(struct nlmsg* nlmsg, const char* type,
                                    const char* name, bool up)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  netlink_init(nlmsg, RTM_NEWLINK, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  if (name)
    netlink_attr(nlmsg, IFLA_IFNAME, name, strlen(name));
  netlink_nest(nlmsg, IFLA_LINKINFO);
  netlink_attr(nlmsg, IFLA_INFO_KIND, type, strlen(type));
}

static void netlink_device_change(struct nlmsg* nlmsg, int sock,
                                  const char* name, bool up, const char* master,
                                  const void* mac, int macsize,
                                  const char* new_name)
{
  struct ifinfomsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  if (up)
    hdr.ifi_flags = hdr.ifi_change = IFF_UP;
  hdr.ifi_index = if_nametoindex(name);
  netlink_init(nlmsg, RTM_NEWLINK, 0, &hdr, sizeof(hdr));
  if (new_name)
    netlink_attr(nlmsg, IFLA_IFNAME, new_name, strlen(new_name));
  if (master) {
    int ifindex = if_nametoindex(master);
    netlink_attr(nlmsg, IFLA_MASTER, &ifindex, sizeof(ifindex));
  }
  if (macsize)
    netlink_attr(nlmsg, IFLA_ADDRESS, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

//% 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");
  }
  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;
}

#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_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");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

#define NL802154_CMD_SET_SHORT_ADDR 11
#define NL802154_ATTR_IFINDEX 3
#define NL802154_ATTR_SHORT_ADDR 10

static const char* setup_802154()
{
  const char* error = NULL;
  int sock_generic = -1;
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) failed";
    goto fail;
  }
  sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) failed";
    goto fail;
  }
  {
    int nl802154_family_id =
        netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
    if (nl802154_family_id < 0) {
      error = "netlink_query_family_id failed";
      goto fail;
    }
    for (int i = 0; i < 2; i++) {
      char devname[] = "wpan0";
      devname[strlen(devname) - 1] += i;
      uint64_t hwaddr = 0xaaaaaaaaaaaa0002 + (i << 8);
      uint16_t shortaddr = 0xaaa0 + i;
      int ifindex = if_nametoindex(devname);
      struct genlmsghdr genlhdr;
      memset(&genlhdr, 0, sizeof(genlhdr));
      genlhdr.cmd = NL802154_CMD_SET_SHORT_ADDR;
      netlink_init(&nlmsg, nl802154_family_id, 0, &genlhdr, sizeof(genlhdr));
      netlink_attr(&nlmsg, NL802154_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
      netlink_attr(&nlmsg, NL802154_ATTR_SHORT_ADDR, &shortaddr,
                   sizeof(shortaddr));
      if (netlink_send(&nlmsg, sock_generic) < 0) {
        error = "NL802154_CMD_SET_SHORT_ADDR failed";
        goto fail;
      }
      netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr,
                            sizeof(hwaddr), 0);
      if (i == 0) {
        netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0", false);
        netlink_done(&nlmsg);
        netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
        if (netlink_send(&nlmsg, sock_route) < 0) {
          error = "netlink: adding device lowpan0 type lowpan link wpan0";
          goto fail;
        }
      }
    }
  }
fail:
  close(sock_route);
  close(sock_generic);
  return error;
}

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[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  *(uint32_t*)0x20000340 = 2;
  *(uint32_t*)0x20000344 = 4;
  *(uint32_t*)0x20000348 = 8;
  *(uint32_t*)0x2000034c = 1;
  *(uint32_t*)0x20000350 = 0x80;
  *(uint32_t*)0x20000354 = -1;
  *(uint32_t*)0x20000358 = 0;
  memset((void*)0x2000035c, 0, 16);
  *(uint32_t*)0x2000036c = 0;
  *(uint32_t*)0x20000370 = -1;
  *(uint32_t*)0x20000374 = 0;
  *(uint32_t*)0x20000378 = 0;
  *(uint32_t*)0x2000037c = 0;
  *(uint64_t*)0x20000380 = 0;
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000340ul, /*size=*/0x48ul);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000580, "ext4\000", 5);
  memcpy((void*)0x20000000, "./file0\000", 8);
  memcpy((void*)0x20000080, "grpquota", 8);
  *(uint8_t*)0x20000088 = 0x2c;
  memcpy((void*)0x20000089, "journal_ioprio", 14);
  *(uint8_t*)0x20000097 = 0x3d;
  sprintf((char*)0x20000098, "0x%016llx", (long long)1);
  *(uint8_t*)0x200000aa = 0x2c;
  memcpy((void*)0x200000ab, "resuid", 6);
  *(uint8_t*)0x200000b1 = 0x3d;
  sprintf((char*)0x200000b2, "0x%016llx", (long long)0);
  *(uint8_t*)0x200000c4 = 0x2c;
  memcpy((void*)0x200000c5, "i_version", 9);
  *(uint8_t*)0x200000ce = 0x2c;
  memcpy((void*)0x200000cf, "data=ordered", 12);
  *(uint8_t*)0x200000db = 0x2c;
  memcpy((void*)0x200000dc, "jqfmt=vfsold", 12);
  *(uint8_t*)0x200000e8 = 0x2c;
  memcpy((void*)0x200000e9, "barrier", 7);
  *(uint8_t*)0x200000f0 = 0x3d;
  sprintf((char*)0x200000f1, "0x%016llx", (long long)6);
  *(uint8_t*)0x20000103 = 0x2c;
  memcpy((void*)0x20000104, "barrier", 7);
  *(uint8_t*)0x2000010b = 0x3d;
  sprintf((char*)0x2000010c, "0x%016llx", (long long)7);
  *(uint8_t*)0x2000011e = 0x2c;
  *(uint8_t*)0x2000011f = 0;
  memcpy(
      (void*)0x20001200,
      "\x78\x9c\xec\xdd\xcf\x6f\x14\x55\x1c\x00\xf0\xef\x6c\x7f\xd0\x52\xb4\xa5"
      "\x31\x2a\x1e\xa4\x89\x31\x90\x28\x2d\x2d\x60\x88\xf1\x00\x57\x43\x1a\xfc"
      "\x11\x2f\x5e\xac\xb4\x20\x52\xa0\xa1\x35\x5a\x34\xa1\x24\x78\x31\x31\x5e"
      "\x8c\x31\xf1\xe4\x41\xfc\x2f\x94\xc8\xc5\x03\x27\x3d\x79\xf0\xe2\xc9\x90"
      "\x10\x35\xc4\x93\x89\x6b\x66\x3b\x53\xba\xed\x6c\x4b\x4b\xdb\xa9\xcc\xe7"
      "\x93\x2c\x7d\xf3\xde\x0e\xef\x4d\xb7\xdf\xbe\xb7\xaf\xef\xcd\x06\x50\x59"
      "\x03\xe9\x3f\xb5\x88\x3d\x11\x31\x95\x44\xf4\x26\x73\x0b\x65\xed\x91\x15"
      "\x0e\xcc\x3f\xef\xee\x5f\x1f\x9d\x4a\x1f\x49\xd4\xeb\xaf\xfd\x91\x44\x92"
      "\xe5\xe5\xcf\x4f\xb2\xaf\x3d\xd9\xc9\x5d\x11\xf1\xd3\x0f\x49\xf4\xb7\x2d"
      "\xaf\x77\x7a\xf6\xf2\xb9\xb1\xc9\xc9\x89\x4b\xd9\xf1\xd0\xcc\xf9\xa9\xa1"
      "\xe9\xd9\xcb\x07\xce\x9e\x1f\x3b\x33\x71\x66\xe2\xc2\xc8\x0b\x23\x47\x8f"
      "\x1c\x3e\x72\x74\xf8\xe0\xba\xae\xeb\x4a\x41\xde\x89\x6b\xef\xbe\xdf\xfb"
      "\xc9\xe8\x9b\xdf\x7c\xf5\x4f\x32\xfc\xed\xaf\xa3\x49\x1c\x8b\x97\xb3\x27"
      "\x2e\xbe\x8e\x8d\x32\x10\x03\x8d\xef\x49\xb2\xbc\xa8\xe7\xe8\x46\x57\x56"
      "\x92\xb6\xec\xe7\x64\xf1\x4b\x9c\xb4\x97\xd8\x20\xd6\x24\x7f\xfd\x3a\x22"
      "\xe2\x89\xe8\x8d\xb6\xb8\xf7\xe2\xf5\xc6\xc7\xaf\x94\xda\x38\x60\x53\xd5"
      "\x93\x88\x3a\x50\x51\x89\xf8\x87\x8a\xca\xc7\x01\xf9\x7b\xfb\xa5\xef\x83"
      "\x6b\xa5\x8c\x4a\x80\xad\x70\xe7\xf8\xfc\x04\xc0\xf2\xf8\x6f\x9f\x9f\x1b"
      "\x8c\xae\xc6\xdc\xc0\xce\xbb\x49\x2c\x9e\xd6\x49\x22\x62\x7d\x33\x73\xcd"
      "\x76\x45\xc4\xad\x9b\xa3\xd7\x4e\xdf\x1c\xbd\x16\x9b\x34\x0f\x07\x14\x9b"
      "\xbb\x1a\x11\x4f\x16\xc5\x7f\xd2\x88\xff\xbe\xe8\x8a\xbe\x46\xfc\xd7\x9a"
      "\xe2\x3f\x1d\x17\x9c\xcc\xbe\xa6\xf9\xaf\xae\xb3\xfe\xa5\x53\xc5\xe2\x1f"
      "\xb6\xce\x7c\xfc\x77\xad\x18\xff\xd1\x22\xfe\xdf\x5a\x14\xff\x6f\xaf\xb3"
      "\xfe\x81\x7b\xc9\x77\xba\x9b\xe2\xbf\x7b\xbd\x97\x04\x00\x00\x00\x00\x00"
      "\x00\x95\x75\xe3\x78\x44\x3c\x5f\xf4\xf7\xff\xda\xc2\xfa\x9f\x28\x58\xff"
      "\xd3\x13\x11\xc7\x36\xa0\xfe\x81\x25\xc7\xcb\xff\xfe\x5f\xbb\xbd\x01\xd5"
      "\x00\x05\xee\x1c\x8f\x78\xa9\x70\xfd\x6f\x2d\x5f\xfd\xdb\xd7\x96\xa5\x1e"
      "\x69\xac\x07\xe8\x48\x4e\x9f\x9d\x9c\x38\x18\x11\x8f\x46\xf4\x47\x74\xec"
      "\x48\x8f\x87\x57\xa8\xe3\xc0\xa7\xfd\x5f\xb6\x2a\x1b\xc8\xd6\xff\xe5\x8f"
      "\xb4\xfe\x5b\xd9\x5a\xc0\xac\x1d\xb7\xdb\x77\x34\x9f\x33\x3e\x36\x33\xf6"
      "\xa0\xd7\x0d\x44\xdc\xb9\x1a\xf1\x54\xe1\xfa\xdf\x64\xa1\xff\x4f\x0a\xfa"
      "\xff\xf4\xf7\xc1\xd4\x7d\xd6\xd1\xff\xec\xf5\x93\xad\xca\x56\x8f\x7f\x60"
      "\xb3\xd4\xbf\x8e\xd8\x57\xd8\xff\xdf\xbb\x6b\x45\xb2\xf2\xfd\x39\x86\x1a"
      "\xe3\x81\xa1\x7c\x54\xb0\xdc\xd3\x1f\x7e\xf6\x5d\xab\xfa\xd7\x1b\xff\x6e"
      "\x31\x01\x0f\x2e\xed\xff\x77\xae\x1c\xff\x7d\xc9\xe2\xfb\xf5\x4c\xaf\xbd"
      "\x8e\x43\xb3\xed\xf5\x56\x65\xeb\x1d\xff\x77\x26\xaf\x37\x6e\x39\xd3\x99"
      "\xe5\x7d\x30\x36\x33\x73\x69\x38\xa2\x33\x39\xd1\x96\xe6\x36\xe5\x8f\xac"
      "\xbd\xcd\xf0\x30\xca\xe3\x21\x8f\x97\x34\xfe\xf7\x3f\xb3\xf2\xfc\x5f\xd1"
      "\xf8\xbf\x3b\x22\xe6\x96\xfc\xdf\xc9\x9f\xcd\x7b\x8a\x73\x8f\xff\xdb\xf3"
      "\x5b\xab\xf6\x18\xff\x43\x79\xd2\xf8\x1f\x5f\x53\xff\xbf\xf6\xc4\xc8\xf5"
      "\xbe\xef\x5b\xd5\x7f\x7f\xfd\xff\xe1\x46\x5f\xbf\x3f\xcb\x31\xff\x07\xf3"
      "\xbe\xc8\xc3\xb4\xb3\x39\xbf\x20\x1c\xdb\x8b\x8a\xb6\xba\xbd\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\xf0\x30\xa8\x45\xc4\xae\x48\x6a\x83\x0b\xe9\x5a\x6d\x70"
      "\x30\xa2\x27\x22\x1e\x8b\x9d\xb5\xc9\x8b\xd3\x33\xcf\x9d\xbe\xf8\xde\x85"
      "\xf1\xb4\xac\xf1\xf9\xff\xb5\xfc\x93\x7e\x7b\xe7\x8f\x93\xfc\xf3\xff\xfb"
      "\x16\x1d\x8f\x2c\x39\x3e\x14\x11\xbb\x23\xe2\xf3\xb6\xee\xc6\xf1\xe0\xa9"
      "\x8b\x93\xe3\x65\x5f\x3c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x6c\x13\x3d\x05\xfb\xff\xff\xfe\x71\xbe\xec\xf7\xb6\xb2\x5b"
      "\x07\x6c\xba\xf6\xb2\x1b\x00\x94\xa6\x20\xfe\x7f\x2e\xa3\x1d\xc0\xd6\xd3"
      "\xff\x43\x75\x89\x7f\xa8\x2e\xf1\x0f\xd5\x25\xfe\xa1\xba\xc4\x3f\x54\x97"
      "\xf8\x87\xea\x12\xff\x50\x5d\xe2\x1f\x00\x00\x00\x00\x00\x1e\x2a\xbb\xf7"
      "\xde\xf8\x25\x89\x88\xb9\x17\xbb\x1b\x8f\x54\x67\x56\xd6\x51\x6a\xcb\x80"
      "\xcd\x56\x2b\xbb\x01\x40\x69\xdc\xe2\x07\xaa\xcb\xd2\x1f\xa8\x2e\xef\xf1"
      "\x81\x64\x95\xf2\xae\x96\x27\xad\x76\xe6\x4a\xa6\x4e\x3d\xc0\xc9\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x50\x39\xfb\xf6\xd8\xff\x0f\x55\x65\xff"
      "\x3f\x54\x97\xfd\xff\x50\x5d\xf9\xfe\xff\xbd\x25\xb7\x03\xd8\x7a\xde\xe3"
      "\x03\xb1\xca\x4e\xfe\xc2\xfd\xff\xab\x9e\x05\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x6c\xa4\xe9\xd9\xcb\xe7\xc6\x26\x27\x27\x2e\x49\xbc\xb1\x3d"
      "\x9a\xb1\x95\x89\x7a\xbd\x7e\x25\xfd\x29\xd8\x2e\xed\xf9\x9f\x27\xf2\xa5"
      "\xf0\xdb\xa5\x3d\x4b\x12\xf9\x5e\xbf\xfb\x3b\xab\xbc\xdf\x49\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\xb3\xff\x02"
      "\x00\x00\xff\xff\x06\x49\x26\x10",
      1502);
  syz_mount_image(/*fs=*/0x20000580, /*dir=*/0x20000000,
                  /*flags=MS_STRICTATIME|MS_SILENT|MS_NOSUID*/ 0x1008002,
                  /*opts=*/0x20000080, /*chdir=*/1, /*size=*/0x5de,
                  /*img=*/0x20001200);
  memcpy((void*)0x20000040, "./file0\000", 8);
  syscall(__NR_chdir, /*dir=*/0x20000040ul);
  *(uint32_t*)0x20000100 = 0x1f;
  *(uint32_t*)0x20000104 = 0x11;
  *(uint64_t*)0x20000108 = 0x20000200;
  memcpy((void*)0x20000200,
         "\x18\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x85"
         "\x00\x00\x00\xa8\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a"
         "\xf8\xff\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a\xf0"
         "\xff\x00\x00\x00\x00\xbf\xa1\x00\x00\x00\x00\x00\x00\x07\x01\x00\x00"
         "\xf8\xff\xff\xff\xbf\xa4\x00\x00\x00\x00\x00\x00\x07\x04\x00\x00\xf0"
         "\xff\xff\xff\xb7\x02\x00\x00\x08\x00\x00\x00\x18\x23\x00\x00",
         100);
  *(uint32_t*)0x20000264 = r[0];
  *(uint16_t*)0x20000268 = -1;
  *(uint64_t*)0x20000110 = 0;
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0x1a;
  memset((void*)0x20000130, 0, 16);
  *(uint32_t*)0x20000140 = 0;
  *(uint32_t*)0x20000144 = 0;
  *(uint32_t*)0x20000148 = -1;
  *(uint32_t*)0x2000014c = 0;
  *(uint64_t*)0x20000150 = 0;
  *(uint32_t*)0x20000158 = 0;
  *(uint32_t*)0x2000015c = 0;
  *(uint64_t*)0x20000160 = 0;
  *(uint32_t*)0x20000168 = 0;
  *(uint32_t*)0x2000016c = 0;
  *(uint32_t*)0x20000170 = 0;
  *(uint32_t*)0x20000174 = 0;
  *(uint64_t*)0x20000178 = 0;
  *(uint64_t*)0x20000180 = 0;
  *(uint32_t*)0x20000188 = 0x10;
  *(uint32_t*)0x2000018c = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000100ul, /*size=*/0x90ul);
  *(uint32_t*)0x20000340 = 2;
  *(uint32_t*)0x20000344 = 4;
  *(uint32_t*)0x20000348 = 8;
  *(uint32_t*)0x2000034c = 1;
  *(uint32_t*)0x20000350 = 0x80;
  *(uint32_t*)0x20000354 = -1;
  *(uint32_t*)0x20000358 = 0;
  memset((void*)0x2000035c, 0, 16);
  *(uint32_t*)0x2000036c = 0;
  *(uint32_t*)0x20000370 = -1;
  *(uint32_t*)0x20000374 = 0;
  *(uint32_t*)0x20000378 = 0;
  *(uint32_t*)0x2000037c = 0;
  *(uint64_t*)0x20000380 = 0;
  syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000340ul, /*size=*/0x48ul);
  *(uint32_t*)0x20000100 = 0x18;
  *(uint32_t*)0x20000104 = 0x11;
  *(uint64_t*)0x20000108 = 0x20000200;
  *(uint64_t*)0x20000110 = 0x20000b00;
  memcpy((void*)0x20000b00, "GPL\000", 4);
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0x1a;
  memset((void*)0x20000130, 0, 16);
  *(uint32_t*)0x20000140 = 0;
  *(uint32_t*)0x20000144 = 0xe;
  *(uint32_t*)0x20000148 = -1;
  *(uint32_t*)0x2000014c = 0;
  *(uint64_t*)0x20000150 = 0;
  *(uint32_t*)0x20000158 = 0;
  *(uint32_t*)0x2000015c = 0;
  *(uint64_t*)0x20000160 = 0;
  *(uint32_t*)0x20000168 = 0x18;
  *(uint32_t*)0x2000016c = 0;
  *(uint32_t*)0x20000170 = 0;
  *(uint32_t*)0x20000174 = 0;
  *(uint64_t*)0x20000178 = 0;
  *(uint64_t*)0x20000180 = 0;
  *(uint32_t*)0x20000188 = 0x10;
  *(uint32_t*)0x2000018c = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000100ul, /*size=*/0x90ul);
  memcpy((void*)0x20000000,
         "sit0\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  *(uint64_t*)0x20000010 = 0;
  syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0x89f3, /*arg=*/0x20000000ul);
  memcpy((void*)0x20000140, "/dev/kvm\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000140ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[1] = res;
  res = syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0xae01, /*type=*/0ul);
  if (res != -1)
    r[2] = res;
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[3] = res;
  syscall(__NR_write, /*fd=*/r[3], /*data=*/0ul, /*len=*/0ul);
  syscall(__NR_dup, /*oldfd=*/r[2]);
  res = syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0xae41, /*id=*/0ul);
  if (res != -1)
    r[4] = res;
  *(uint64_t*)0x200001c0 = 0;
  *(uint32_t*)0x200001c8 = 0xd000;
  *(uint32_t*)0x200001cc = 0;
  syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x4010ae67, /*arg=*/0x200001c0ul);
  syscall(__NR_mmap, /*addr=*/0x203d4000ul, /*len=*/0x4000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED_NOREPLACE|MAP_FIXED*/ 0x100010ul, /*fd=*/r[4],
          /*offset=*/0x74c70000ul);
  syscall(__NR_ioctl, /*fd=*/r[4], /*cmd=*/0xae9a, 0);
  syscall(__NR_ioctl, /*fd=*/r[4], /*cmd=*/0xae80, /*arg=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x3000ul,
          /*prot=PROT_READ|PROT_EXEC*/ 5ul,
          /*flags=MAP_FIXED|MAP_PRIVATE*/ 0x12ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_clock_gettime, /*id=*/0ul, /*tp=*/0ul);
  *(uint64_t*)0x20000300 = 0;
  *(uint64_t*)0x20000308 = 0;
  *(uint64_t*)0x20000310 = 0x77359400;
  *(uint64_t*)0x20000318 = 0;
  syscall(__NR_utimensat, /*dir=*/-1, /*pathname=*/0ul, /*times=*/0x20000300ul,
          /*flags=AT_SYMLINK_NOFOLLOW*/ 0x100ul);
  syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0ul, /*size=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  if ((reason = setup_802154()))
    printf("the reproducer may not work as expected: 802154 injection setup "
           "failed: %s\n",
           reason);
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      loop();
    }
  }
  sleep(1000000);
  return 0;
}