// https://syzkaller.appspot.com/bug?id=12a5d737c6cb6a2fd8e914a73d87759f83822cff
// 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_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 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 unsigned int queue_count = 2;

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_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  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");
  } else if (strncmp(fs, "gfs2", 4) == 0 &&
             (strstr(opts, "errors=panic") || strstr(opts, "debug"))) {
    strcat(opts, ",errors=withdraw");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

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

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

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

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

#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++) {
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  clock_adjtime arguments: [
  //    id: clock_id = 0x0 (8 bytes)
  //    tx: ptr[in, timex] {
  //      timex {
  //        stuff0: intptr = 0x7fff (8 bytes)
  //        stuff1: intptr = 0x0 (8 bytes)
  //        stuff2: intptr = 0xfffffffffffffffd (8 bytes)
  //        stuff3: intptr = 0x0 (8 bytes)
  //        stuff4: intptr = 0x0 (8 bytes)
  //        stuff5: intptr = 0x0 (8 bytes)
  //        stuff6: intptr = 0x0 (8 bytes)
  //        stuff7: intptr = 0x0 (8 bytes)
  //        stuff8: intptr = 0x0 (8 bytes)
  //        stuff9: intptr = 0x0 (8 bytes)
  //        stuff10: intptr = 0x0 (8 bytes)
  //        stuff11: intptr = 0x29e9 (8 bytes)
  //        stuff12: intptr = 0x0 (8 bytes)
  //        stuff13: intptr = 0x0 (8 bytes)
  //        stuff14: intptr = 0x0 (8 bytes)
  //        stuff15: intptr = 0x0 (8 bytes)
  //        stuff16: intptr = 0x0 (8 bytes)
  //        stuff17: intptr = 0x0 (8 bytes)
  //        stuff18: intptr = 0x0 (8 bytes)
  //        stuff19: intptr = 0x0 (8 bytes)
  //        stuff20: intptr = 0x0 (8 bytes)
  //        stuff21: intptr = 0x0 (8 bytes)
  //        stuff22: intptr = 0x10 (8 bytes)
  //        stuff23: intptr = 0x0 (8 bytes)
  //        stuff24: intptr = 0x0 (8 bytes)
  //        stuff25: intptr = 0x0 (8 bytes)
  //      }
  //    }
  //  ]
  *(uint64_t*)0x200000000000 = 0x7fff;
  *(uint64_t*)0x200000000008 = 0;
  *(uint64_t*)0x200000000010 = 0xfffffffffffffffd;
  *(uint64_t*)0x200000000018 = 0;
  *(uint64_t*)0x200000000020 = 0;
  *(uint64_t*)0x200000000028 = 0;
  *(uint64_t*)0x200000000030 = 0;
  *(uint64_t*)0x200000000038 = 0;
  *(uint64_t*)0x200000000040 = 0;
  *(uint64_t*)0x200000000048 = 0;
  *(uint64_t*)0x200000000050 = 0;
  *(uint64_t*)0x200000000058 = 0x29e9;
  *(uint64_t*)0x200000000060 = 0;
  *(uint64_t*)0x200000000068 = 0;
  *(uint64_t*)0x200000000070 = 0;
  *(uint64_t*)0x200000000078 = 0;
  *(uint64_t*)0x200000000080 = 0;
  *(uint64_t*)0x200000000088 = 0;
  *(uint64_t*)0x200000000090 = 0;
  *(uint64_t*)0x200000000098 = 0;
  *(uint64_t*)0x2000000000a0 = 0;
  *(uint64_t*)0x2000000000a8 = 0;
  *(uint64_t*)0x2000000000b0 = 0x10;
  *(uint64_t*)0x2000000000b8 = 0;
  *(uint64_t*)0x2000000000c0 = 0;
  *(uint64_t*)0x2000000000c8 = 0;
  syscall(__NR_clock_adjtime, /*id=*/0ul, /*tx=*/0x200000000000ul);
  //  prlimit64 arguments: [
  //    pid: pid (resource)
  //    res: rlimit_type = 0xe (8 bytes)
  //    new: ptr[in, rlimit] {
  //      rlimit {
  //        soft: intptr = 0x10001 (8 bytes)
  //        hard: intptr = 0x20000001000 (8 bytes)
  //      }
  //    }
  //    old: nil
  //  ]
  *(uint64_t*)0x200000000600 = 0x10001;
  *(uint64_t*)0x200000000608 = 0x20000001000;
  syscall(__NR_prlimit64, /*pid=*/0, /*res=RLIMIT_RTPRIO*/ 0xeul,
          /*new=*/0x200000000600ul, /*old=*/0ul);
  //  sched_setscheduler arguments: [
  //    pid: pid (resource)
  //    policy: sched_policy = 0x1 (8 bytes)
  //    prio: ptr[in, int32] {
  //      int32 = 0x7 (4 bytes)
  //    }
  //  ]
  *(uint32_t*)0x200000000080 = 7;
  syscall(__NR_sched_setscheduler, /*pid=*/0, /*policy=SCHED_FIFO*/ 1ul,
          /*prio=*/0x200000000080ul);
  //  syz_mount_image$vfat arguments: [
  //    fs: ptr[in, buffer] {
  //      buffer: {76 66 61 74 00} (length 0x5)
  //    }
  //    dir: ptr[in, buffer] {
  //      buffer: {2e 2f 66 69 6c 65 30 00} (length 0x8)
  //    }
  //    flags: mount_flags = 0x18000 (8 bytes)
  //    opts: ptr[inout, array[ANYUNION]] {
  //      array[ANYUNION] {
  //        union ANYUNION {
  //          ANYRES32: ANYRES32 (resource)
  //        }
  //        union ANYUNION {
  //          ANYRES16: ANYRES16 (resource)
  //        }
  //        union ANYUNION {
  //          ANYRESOCT: ANYRES64 (resource)
  //        }
  //        union ANYUNION {
  //          ANYBLOB: buffer: {fe 2e cf 20 a9 a1 7b d2 ed 7e 80 3f 83 03 75 c1
  //          50 a1 f8 48 f6 04 c2 c1 f9 32 d2 b7 16 3b e4 b2 b9 a5 bd 52 1d 18
  //          5c fb ee 55 5b 27 60 85 94 be ba 63 25 92 3a af 5d b7 4c ff 01 00
  //          00 53 db 92 c6 c5 fc bb a0 ab d9 75 fc 76 be a4 9b 00 51 3a fc 85
  //          6e d8 9d 3f ad ed a3 07 ca 58 73 54 32 28 03 b0 98 3c c6 57 25 ae
  //          7f 45 fb 95 e7 cd b2 8c 6b 88 69 59 b7 dd e2 c8 7c 73 f6 00 8c f6
  //          ee d7 86 1f 24 b7 42 37 04 b9 5f 3d 05 b9 2d 3d 7f f9 d3 92 83 3e
  //          cd 02 44 33 20 b6 01 31 a3 50 36 0f cc 1d 65 9e 2a 03 cb 46 9c af
  //          04 98 ba ca e0 73 5a 16 13 45 b3 d7 1a 55 f1 4e f6 36 b6 f8 32 c7
  //          a6 07 1f ce 83 90 4d fd 87 1b 6d 8e 03 64 8d ba a3 a0 39 eb 56 73
  //          79 2c ae 80 33 57 32 03 0f 9a ea ba f3 bb 3c c4 ca 5f e7 52 71 d6
  //          9b 2e 78 be b2 b8 1f c3 cf 3a 18 a7 ae 93 a3 cd be 65 99 b9 94 08
  //          27 5e 2b 4b 44 77 c6 fc f4 80 61 34 e8 39 e1 bd 33 ec 00 00 00 00
  //          00 00 00 6a 1c 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 69 c3 28 83 11 b7 41 47 05 e9 75 eb 3f
  //          1b 77 a1 20} (length 0x148)
  //        }
  //        union ANYUNION {
  //          ANYRES32: ANYRES32 (resource)
  //        }
  //        union ANYUNION {
  //          ANYRES64: ANYRES64 (resource)
  //        }
  //        union ANYUNION {
  //          ANYRESDEC: ANYRES64 (resource)
  //        }
  //      }
  //    }
  //    chdir: int8 = 0x1 (1 bytes)
  //    size: len = 0x304 (8 bytes)
  //    img: ptr[in, buffer] {
  //      buffer: (compressed buffer with length 0x304)
  //    }
  //  ]
  //  returns fd_dir
  memcpy((void*)0x200000000080, "vfat\000", 5);
  memcpy((void*)0x200000000480, "./file0\000", 8);
  *(uint32_t*)0x200000000640 = 0;
  *(uint16_t*)0x200000000644 = -1;
  sprintf((char*)0x200000000646, "%023llo", (long long)-1);
  memcpy(
      (void*)0x20000000065d,
      "\xfe\x2e\xcf\x20\xa9\xa1\x7b\xd2\xed\x7e\x80\x3f\x83\x03\x75\xc1\x50\xa1"
      "\xf8\x48\xf6\x04\xc2\xc1\xf9\x32\xd2\xb7\x16\x3b\xe4\xb2\xb9\xa5\xbd\x52"
      "\x1d\x18\x5c\xfb\xee\x55\x5b\x27\x60\x85\x94\xbe\xba\x63\x25\x92\x3a\xaf"
      "\x5d\xb7\x4c\xff\x01\x00\x00\x53\xdb\x92\xc6\xc5\xfc\xbb\xa0\xab\xd9\x75"
      "\xfc\x76\xbe\xa4\x9b\x00\x51\x3a\xfc\x85\x6e\xd8\x9d\x3f\xad\xed\xa3\x07"
      "\xca\x58\x73\x54\x32\x28\x03\xb0\x98\x3c\xc6\x57\x25\xae\x7f\x45\xfb\x95"
      "\xe7\xcd\xb2\x8c\x6b\x88\x69\x59\xb7\xdd\xe2\xc8\x7c\x73\xf6\x00\x8c\xf6"
      "\xee\xd7\x86\x1f\x24\xb7\x42\x37\x04\xb9\x5f\x3d\x05\xb9\x2d\x3d\x7f\xf9"
      "\xd3\x92\x83\x3e\xcd\x02\x44\x33\x20\xb6\x01\x31\xa3\x50\x36\x0f\xcc\x1d"
      "\x65\x9e\x2a\x03\xcb\x46\x9c\xaf\x04\x98\xba\xca\xe0\x73\x5a\x16\x13\x45"
      "\xb3\xd7\x1a\x55\xf1\x4e\xf6\x36\xb6\xf8\x32\xc7\xa6\x07\x1f\xce\x83\x90"
      "\x4d\xfd\x87\x1b\x6d\x8e\x03\x64\x8d\xba\xa3\xa0\x39\xeb\x56\x73\x79\x2c"
      "\xae\x80\x33\x57\x32\x03\x0f\x9a\xea\xba\xf3\xbb\x3c\xc4\xca\x5f\xe7\x52"
      "\x71\xd6\x9b\x2e\x78\xbe\xb2\xb8\x1f\xc3\xcf\x3a\x18\xa7\xae\x93\xa3\xcd"
      "\xbe\x65\x99\xb9\x94\x08\x27\x5e\x2b\x4b\x44\x77\xc6\xfc\xf4\x80\x61\x34"
      "\xe8\x39\xe1\xbd\x33\xec\x00\x00\x00\x00\x00\x00\x00\x6a\x1c\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x69\xc3\x28\x83\x11\xb7\x41\x47\x05\xe9\x75\xeb\x3f"
      "\x1b\x77\xa1\x20",
      328);
  *(uint32_t*)0x2000000007a5 = 0;
  *(uint64_t*)0x2000000007a9 = -1;
  sprintf((char*)0x2000000007b1, "%020llu", (long long)0);
  memcpy(
      (void*)0x200000000bc0,
      "\x78\x9c\xec\xdc\xcf\x4f\x13\x69\x18\xc0\xf1\xa7\x3f\x28\x6d\x09\x94\xc3"
      "\x66\x37\xbb\xc9\x86\x77\x77\x2f\xeb\x65\x02\xd5\xb3\xd2\x18\x48\x8c\x4d"
      "\x24\x48\x8d\x3f\x12\x93\x01\xa6\xda\x74\x6c\x49\xa7\xc1\xd4\x18\x91\x93"
      "\x57\xe3\xcd\x7f\xc0\x03\xe1\xc8\x8d\x44\xf9\x07\xb8\x78\xd3\x8b\x17\x6f"
      "\x5c\x4c\x3c\xc8\xc1\x38\xa6\xd3\x19\x4a\xcb\x14\xa4\xb4\x94\x1f\xdf\x4f"
      "\x42\xe6\xe1\x7d\xde\x67\x3a\x6f\x5b\xc8\x33\x0d\x2f\x5b\xb7\x5f\x3e\xca"
      "\x67\x2d\x2d\xab\x97\x25\x18\x55\x12\x10\x11\xd9\x16\x19\x96\xa0\x78\x02"
      "\xee\x31\xe8\xc4\x11\xd9\xed\xb9\x5c\x18\xf8\xfa\xe1\xef\x9b\x77\xee\x5e"
      "\x4f\xa5\xd3\x13\xd3\x4a\x4d\xa6\x66\x2e\x26\x95\x52\x43\x23\x6f\x1f\x3f"
      "\x8d\xb9\xd3\xd6\xfb\x65\x73\xf8\xfe\xd6\x97\xe4\xe7\xcd\xdf\x37\xff\xdc"
      "\xfa\x31\xf3\x30\x67\xa9\x9c\xa5\x0a\xc5\xb2\xd2\xd5\x6c\xf1\x53\x59\x9f"
      "\x35\x0d\x35\x9f\xb3\xf2\x9a\x52\x53\xa6\xa1\x5b\x86\xca\x15\x2c\xa3\x54"
      "\xcb\x17\x6b\xf9\xac\x59\x5c\x58\xa8\x28\xbd\x30\x3f\x18\x5f\x28\x19\x96"
      "\xa5\xf4\x42\x45\xe5\x8d\x8a\x2a\x17\x55\xb9\x54\x51\xa1\x07\x7a\xae\xa0"
      "\x34\x4d\x53\x83\x71\xc1\x41\x32\x2b\xd3\xd3\x7a\xaa\xcd\xe2\xb9\x0e\x5f"
      "\x0c\xba\xa4\x54\x4a\xe9\x21\x11\x89\xed\xc9\x64\x56\x7a\x72\x41\x00\x00"
      "\xa0\xa7\x9a\xfb\xff\xa0\xa8\x4e\xf6\xff\xab\xff\x6e\x94\x07\x6e\xad\x0d"
      "\xb9\xfd\xff\x7a\xc4\xaf\xff\xbf\xf4\xb1\x76\xae\x86\xfe\x3f\x2a\x22\xbe"
      "\xfd\xbf\xf7\xf8\xbe\xfd\xbf\x7e\xb8\xfe\x7f\x6f\x47\x74\x4a\xd9\x76\x5b"
      "\x65\x47\xea\xff\x71\x32\x8c\x44\xf6\x0c\x05\xea\x61\x35\x59\x4a\xe9\x71"
      "\xf7\xe7\xd7\xb1\x7c\x6f\x75\xd4\x09\xe8\xff\x01\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x38\x0d\xb6\x6d\x3b\x61\xdb\x76"
      "\xc2\x3b\x7a\x5f\xfd\x22\x12\x75\x36\x96\xd4\xbe\xf7\x29\x0d\x89\xc8\x95"
      "\x1e\x5c\x32\x3a\xe8\x08\xaf\x3f\xce\x80\xfa\xc6\xbd\xf0\x90\x88\xf9\x62"
      "\x31\xb3\x98\xa9\x1d\xdd\x09\x1b\x22\x62\x3a\xaf\x7f\x42\xbe\x3b\xef\x07"
      "\x57\x35\xf6\x76\x1e\xa9\xaa\x61\x79\x67\x2e\xb9\xf5\x4b\x8b\x99\x90\x93"
      "\x49\x65\x25\x27\xa6\x18\x32\x26\x89\x3e\x69\xae\xb7\xed\xc9\x6b\xe9\x89"
      "\x31\x55\xd3\x58\xdf\x27\xf1\xdd\xf5\x49\x49\xc8\x6f\xfe\xf5\x49\xdf\xfa"
      "\x88\xfc\xff\xdf\xae\x7a\x4d\x12\xf2\x7e\x4e\x8a\x62\xca\xbc\xbb\x61\xce"
      "\xab\x7f\x36\xa6\xd4\xd5\x1b\xe9\xa6\xfa\x98\x33\x0f\x00\x00\x00\x00\x80"
      "\xb3\x40\x53\x3b\x7c\xef\xdf\x35\xad\x55\xbe\x56\xbf\x73\x7f\x3d\xda\xf4"
      "\xf9\x40\xa8\x7e\x7f\x3d\xea\x7b\x7f\x1e\x96\xbf\xc2\xbd\x5d\x3b\x00\x00"
      "\x00\x00\x00\xe7\x85\x55\x79\x92\xd7\x4d\xd3\x28\xed\x04\x83\x22\xd2\x38"
      "\x12\x93\xe6\x39\x9d\x0c\xc2\x5d\x3a\xb3\xb7\xc2\x5f\xad\xf2\xfe\x96\xa1"
      "\x7b\x2b\xdd\x27\xf0\x1e\xbc\x21\x15\x75\x07\x3b\xfe\xb4\x04\x0e\xf1\xb4"
      "\xb4\x08\x82\xd2\x4e\xd5\x48\x75\x35\xaa\x29\xf5\xcf\xb2\xcf\xda\xf7\x0b"
      "\xbc\x8f\x8d\x5a\xcd\x91\xa9\x71\x77\xe4\x75\xcb\x39\xdd\x09\xfe\x78\xf5"
      "\xe6\x5b\xe7\x4e\x78\x79\x2d\x7a\xc0\x4a\xdb\x0f\x42\xfb\xbf\x01\xfa\x8e"
      "\xe7\xb7\x0f\x00\x00\x00\x80\xe3\x54\x6f\xfa\xbd\x91\xf1\xde\x5e\x10\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\xe7\xd0\x71\xfc\x77\xb4\x5e\xaf\x11\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x38\x29\x7e\x06\x00\x00\xff\xff\xd9\xad\x02\xed",
      772);
  syz_mount_image(/*fs=*/0x200000000080, /*dir=*/0x200000000480,
                  /*flags=MS_POSIXACL|MS_SILENT*/ 0x18000,
                  /*opts=*/0x200000000640, /*chdir=*/1, /*size=*/0x304,
                  /*img=*/0x200000000bc0);
  //  openat$cgroup_ro arguments: [
  //    fd: fd_cgroup (resource)
  //    file: ptr[in, buffer] {
  //      buffer: {6d 65 6d 6f 72 79 2e 65 76 65 6e 74 73 2e 6c 6f 63 61 6c 00}
  //      (length 0x14)
  //    }
  //    flags: const = 0x275a (4 bytes)
  //    mode: const = 0x0 (2 bytes)
  //  ]
  //  returns fd
  memcpy((void*)0x200000000840, "memory.events.local\000", 20);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x200000000840ul,
                /*flags=*/0x275a, /*mode=*/0);
  if (res != -1)
    r[0] = res;
  //  write$binfmt_script arguments: [
  //    fd: fd_binfmt (resource)
  //    data: ptr[in, binfmt_script] {
  //      binfmt_script {
  //        hdr: buffer: {23 21 20} (length 0x3)
  //        bin: buffer: {} (length 0x0)
  //        args: array[binfmt_script_arg] {
  //        }
  //        nl: const = 0xa (1 bytes)
  //        data: buffer: {} (length 0x0)
  //      }
  //    }
  //    len: bytesize = 0x208e24b (8 bytes)
  //  ]
  memcpy((void*)0x200000000040, "#! ", 3);
  *(uint8_t*)0x200000000043 = 0xa;
  syscall(__NR_write, /*fd=*/r[0], /*data=*/0x200000000040ul,
          /*len=*/0x208e24bul);
  //  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[0], /*offset=*/0ul);
  //  fdatasync arguments: [
  //    fd: fd (resource)
  //  ]
  syscall(__NR_fdatasync, /*fd=*/r[0]);
  //  madvise arguments: [
  //    addr: VMA[0x600000]
  //    len: len = 0x600003 (8 bytes)
  //    advice: madvise_flags = 0x15 (8 bytes)
  //  ]
  syscall(__NR_madvise, /*addr=*/0x200000000000ul, /*len=*/0x600003ul,
          /*advice=MADV_PAGEOUT*/ 0x15ul);
  //  mlock arguments: [
  //    addr: VMA[0x800000]
  //    size: len = 0x800000 (8 bytes)
  //  ]
  syscall(__NR_mlock, /*addr=*/0x200000000000ul, /*size=*/0x800000ul);
}
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);
  const char* reason;
  (void)reason;
  if ((reason = setup_802154())) {
    fprintf(stderr, "reproducer setup failed: 802154 injection: %s\n", reason);
    exit(1);
  }
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}