// https://syzkaller.appspot.com/bug?id=76c0afb6e24e6dc4093c36801d0b3a61b486ec4d
// 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 <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/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/futex.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 __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

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

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

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

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

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

static 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;
}

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, 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 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, loopfd = -1, 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) {
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    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) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  errno = err;
  return res;
}

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

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

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

static void setup_sysctl()
{
  char mypid[32];
  snprintf(mypid, sizeof(mypid), "%d", getpid());
  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"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", mypid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data))
      printf("write to %s failed: %s\n", files[i].name, strerror(errno));
  }
}

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

static void setup_802154()
{
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1)
    exit(1);
  int sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic < 0)
    exit(1);
  int nl802154_family_id =
      netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
  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));
    int err = netlink_send(&nlmsg, sock_generic);
    if (err < 0) {
    }
    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));
      int err = netlink_send(&nlmsg, sock_route);
      if (err < 0) {
      }
    }
  }
  close(sock_route);
  close(sock_generic);
}

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)
{
  int i, call, thread;
  for (call = 0; call < 6; 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++) {
    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 (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

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

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000040, "nilfs2\000", 7));
    NONFAILING(memcpy((void*)0x20000a80, "./file0\000", 8));
    NONFAILING(memcpy(
        (void*)0x20001540,
        "\x78\x9c\xec\xdd\x4d\x8c\x5b\x47\x1d\x00\xf0\xf1\xee\x7a\xd3\x7c\x94"
        "\x38\x25\xa1\x4b\x1a\xda\x84\x42\x5b\x3e\xba\xdb\x6c\x96\xf0\x11\x41"
        "\x52\x35\x42\x22\x6a\x2a\x6e\x95\x2a\x2e\x51\x9a\x96\x88\x34\x20\x52"
        "\x09\x5a\xf5\x90\xe4\xc4\x8d\x56\x55\xb8\xf2\x21\x4e\xbd\x54\x80\x90"
        "\xe8\x05\x45\x3d\x71\xa9\x44\x23\x55\x48\x3d\x15\x0e\x1c\x88\x82\x54"
        "\x89\x03\x14\x92\x45\xf1\xce\x78\xed\x7f\x6c\x3d\x7b\xb3\x59\xaf\xd7"
        "\xbf\x9f\x34\x3b\x9e\x37\x63\xcf\x3c\xef\xf3\xf3\xf3\x7b\x6f\x66\x12"
        "\x30\xb6\x26\x9a\x7f\x17\x16\x66\x6a\x29\x5d\x7a\xeb\xf5\xa3\xff\x78"
        "\xe8\xef\x9b\x6f\x2e\x39\xdc\x2a\xd1\x68\xfe\x9d\x6a\x4b\xd5\x53\x4a"
        "\xb5\x9c\x9e\x0a\xaf\xf7\xc1\xe4\x52\x7c\xfd\xc3\x57\x4e\x76\x8b\x6b"
        "\x69\xbe\xf9\xb7\xa4\xd3\x53\xd7\x5a\xcf\xdd\x9a\x52\x3a\x9f\xf6\xa6"
        "\xcb\xa9\x91\x76\x5f\xba\xf2\xda\x3b\xf3\x4f\x1e\xbf\x70\xec\xe2\xbe"
        "\x77\xdf\x38\x74\xf5\xce\xac\x3d\x00\x00\x8c\x97\x6f\x5f\x3e\xb4\xb0"
        "\xeb\xaf\x7f\xbe\x6f\xc7\x47\x6f\xde\x7f\x24\x6d\x6a\x2d\x2f\xc7\xe7"
        "\x8d\x9c\xde\x96\x8f\xfb\x8f\xe4\x03\xff\x72\xfc\x3f\x91\x3a\xd3\xb5"
        "\xb6\xd0\x6e\x3a\x94\x9b\xca\x61\x22\x94\x9b\xec\x52\xae\xbd\x9e\x7a"
        "\x28\x37\xd5\xa3\xfe\xe9\xf0\xba\xf5\x1e\xe5\x36\x55\xd4\x3f\xd9\xb6"
        "\xac\xdb\x7a\xc3\x28\x2b\xdb\x71\x23\xd5\x26\x66\x3b\xd2\x13\x13\xb3"
        "\xb3\x4b\xbf\xc9\x53\xf3\x77\xfd\x74\x6d\xf6\xec\xe9\x33\xcf\x9d\x1b"
        "\x52\x43\x81\x55\xf7\xaf\x07\x52\x4a\x7b\x47\x28\x1c\x5e\x07\x6d\x58"
        "\x61\x58\x5c\x07\x6d\x18\xc9\x70\x64\x1d\xb4\x61\x83\x86\xc5\xed\xc3"
        "\xde\x03\x01\x2c\x89\xd7\x0b\x6f\x71\x3e\x9e\x59\xb8\x3d\xad\x57\x9b"
        "\xea\xaf\xfe\x6b\x8f\x4f\x74\x7f\x3e\xac\x82\xb5\xde\xfe\xd5\x3f\x5a"
        "\xf5\xff\xfa\x82\x3d\x0e\xab\x67\xa3\x6e\x4d\x65\xbd\xca\xe7\x68\x5b"
        "\x4e\xc7\xeb\x08\xf1\xfe\xa5\xde\x9f\xbf\x78\xa5\xa3\x73\x69\xbc\x1e"
        "\x51\xef\xb3\x9d\xbd\xae\x23\x8c\xca\xf5\x85\x5e\xed\x9c\x5c\xe3\x76"
        "\xac\x54\xaf\xf6\xc7\xed\x62\xa3\xfa\x7a\x8e\xcb\xfb\xf0\x8d\x90\xdf"
        "\xfe\xf9\x89\xff\xd3\x51\xf9\x1f\x03\xdd\xfd\x7b\xd4\xce\xff\x0b\xc2"
        "\xb8\x87\xb4\x7a\xaf\xb5\x38\xe4\xfd\x0f\xb0\x7e\xc5\xfb\xe6\x16\xb3"
        "\x92\x1f\xef\xeb\x8b\xf9\x9b\x2a\xf2\xef\xaa\xc8\xdf\x5c\x91\xbf\xa5"
        "\x22\x7f\x6b\x45\x3e\x8c\xb3\xdf\xbd\xf8\xd3\xf4\x6a\x6d\xf9\x77\x7e"
        "\xfc\x4d\x3f\xe8\xf9\xf0\x72\x9e\xed\xee\x1c\x7f\x6c\xc0\xf6\xc4\xf3"
        "\x91\x83\xd6\x1f\xef\xfb\x1d\xd4\xed\xd6\x1f\xef\x27\x86\xf5\xec\x0f"
        "\x27\x9e\x3e\xf5\x95\x67\x9f\xb9\xb2\x74\xff\x7f\xad\xb5\xfd\xdf\xc8"
        "\xdb\x7b\xf9\xb9\xd1\xc8\x9f\xad\xcb\xb9\x40\x39\x5f\x18\xcf\xab\xb7"
        "\xee\xfd\x6f\x74\xd6\x33\xd1\xa3\xdc\x3d\xa1\x3d\x77\x77\x29\xdf\x7c"
        "\xbc\xb3\xb3\x5c\x6d\xe7\xf2\xeb\xa4\xb6\xfd\xcc\x2d\xed\x98\xe9\x7c"
        "\xde\xf6\x5e\xe5\xf6\x74\x96\x6b\x84\x72\x9b\x73\xb8\x2b\xb4\x37\x1e"
        "\x9f\x6c\x09\xcf\x2b\xc7\x1f\x65\xbf\x5a\xde\xaf\xa9\xb0\xbe\xf5\xb0"
        "\x1e\xd3\xa1\x1d\x65\xbf\xb2\x23\xc7\xb1\x1d\xb0\x12\x65\x7b\xec\x75"
        "\xff\x7f\xd9\x3e\x67\x52\xbd\xf6\xdc\xe9\x33\xa7\x1e\xcb\xe9\xb2\x9d"
        "\xfe\x69\xb2\xbe\xe9\xe6\xf2\xfd\x6b\xdc\x6e\xe0\xf6\xf5\xdb\xff\x67"
        "\x26\x75\xf6\xff\xd9\xd6\x5a\x5e\x9f\x68\xdf\x2f\x6c\x5f\x5e\x5e\x6b"
        "\xdf\x2f\x34\xc2\xf2\xf9\x1e\xcb\x0f\xe4\x74\xf9\x9e\xfb\xee\xe4\xe6"
        "\xe6\xf2\xd9\x93\xdf\x3f\xf3\xec\x6a\xaf\x3c\x8c\xb9\x73\x2f\xbd\xfc"
        "\xbd\x13\x67\xce\x9c\xfa\xa1\x07\x2b\x7e\xf0\xcd\xf5\xd1\x0c\x0f\x3c"
        "\x58\xc5\x07\xc3\xde\x33\x01\x77\xda\xdc\x8b\x2f\xfc\x60\xee\xdc\x4b"
        "\x2f\x3f\x7a\xfa\x85\x13\xcf\x9f\x7a\xfe\xd4\xd9\x03\x07\x0f\x1e\x98"
        "\x9f\x3f\xf8\xd5\x03\x0b\x73\xcd\xe3\xfa\xb9\xf6\xa3\x7b\x60\x23\x59"
        "\xfe\xd2\x1f\x76\x4b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x7e\xfd"
        "\xe8\xd8\xd1\x2b\xef\xbd\xfd\xe5\xf7\x97\xfa\xff\x2f\xf7\xff\x2b\xfd"
        "\xff\xcb\x9d\xbf\xa5\xff\xff\x4f\x42\xff\xff\xd8\x4f\xbe\xf4\x83\x2f"
        "\xfd\x00\x77\x74\xc9\x6f\x96\x09\x03\xac\x4e\x87\x72\xf5\x1c\x3e\x1e"
        "\xda\xbb\x33\xd4\xb3\x2b\x3c\xef\x13\x39\x6e\xcd\xe3\x97\xfb\xff\x97"
        "\xea\xe2\xb8\xae\xa5\x3d\xf7\x86\xe5\x71\xfc\xde\x52\x2e\x0c\x27\x70"
        "\xcb\x78\x29\xd3\x61\x0c\x92\x38\x5f\xe0\xa7\x73\x7c\x31\xc7\xbf\x4a"
        "\x30\x44\xb5\xcd\xdd\x17\xe7\xb8\x6a\x7c\xeb\xb2\xad\x97\xf1\x29\x8c"
        "\x4b\x31\x9a\xca\xff\xad\x6c\x0d\x65\x1c\x93\xd2\xff\xbb\xeb\xb8\x4e"
        "\x6d\xff\xec\x1d\x6b\xd0\x46\x56\xdf\x5a\x74\x27\x1c\xf6\x3a\x02\xdd"
        "\xfd\xd3\xf8\xdf\x82\x30\xb6\x61\x71\xb1\xd7\x2c\x1e\xfd\xce\x60\x03"
        "\xb0\x3a\x86\x3d\xff\x67\x39\xef\x59\xe2\xb3\x7f\xfc\xd6\x5d\x37\x43"
        "\x29\x76\xed\xf1\xce\xfd\x65\x1c\xbf\x14\x06\xf1\x97\xf7\x3a\xd3\xeb"
        "\x7d\xfe\x49\xf5\x6f\xac\xf9\x3f\x5b\xf3\xdf\xf5\xbd\xff\x0b\x33\xe6"
        "\x35\x56\x56\xef\x7f\x7e\x7e\xf5\xfd\xb6\x6a\xd3\xee\x7e\xeb\x8f\xeb"
        "\x5f\xc6\x81\xde\x39\x58\xfd\x1f\xe5\xfa\xcb\xda\x3c\x9c\xfa\xab\x7f"
        "\xf1\x97\xa1\xfe\x78\x41\xa8\x4f\xff\x0d\xf5\x6f\xe9\xb3\xfe\x5b\xd6"
        "\x7f\xcf\xca\xea\xff\x5f\xae\xbf\xbc\x6d\x8f\x3c\xd8\x6f\xfd\x4b\x2d"
        "\xae\x4d\x74\xb6\x23\x9e\x37\x2e\xd7\xff\xe2\x79\xe3\xe2\x7a\x58\xff"
        "\x32\xb6\xe7\xc0\xeb\xbf\xc2\x89\x1a\x6f\xe4\xfa\x61\x9c\x8d\xca\x3c"
        "\xb3\x83\x0a\xf3\xff\xb6\x0e\xda\x57\x3e\xff\x6f\x76\x7e\x75\xe7\xff"
        "\xed\x25\xde\x87\xf1\xa5\x9c\x2e\x3b\xc2\x72\x9f\x43\x9c\xef\x64\xd0"
        "\xf6\x97\xfb\x2b\xca\xf7\xc0\xae\xf0\xfa\xb5\x8a\xef\x37\xf3\xff\x8e"
        "\xb6\xaf\xe5\xb8\xea\xf3\x50\xe6\xff\x2d\xdb\x63\x23\x7f\xe5\xb7\xa5"
        "\x9b\xef\x65\x49\xd7\xbb\xbc\xb7\x1b\x75\x5f\x03\xa3\xea\x03\xd7\xff"
        "\x04\x61\xcd\x43\x6b\x9e\xb8\x21\xb7\x63\x71\x71\xf1\xce\x9e\xd0\xaa"
        "\x30\xd4\xca\x19\xfa\xfb\x3f\xec\xdf\x09\xc3\xae\x7f\xd8\xef\x7f\x95"
        "\x38\xff\x6f\x3c\x86\x8f\xf3\xff\xc6\xfc\x38\xff\x6f\xcc\x8f\xf3\xff"
        "\xc6\xfc\x38\xbf\x5e\xcc\x8f\xf3\xff\xc6\xf7\x33\xce\xff\x1b\xf3\xef"
        "\x0d\xaf\x1b\xe7\x07\x9e\xa9\xc8\xff\x64\x45\xfe\xee\xee\xf9\xad\x9f"
        "\xed\xf7\x55\x3c\x7f\x4f\x45\xfe\xa7\x2a\xf2\xf7\x55\xe4\xdf\x5f\x91"
        "\xff\x40\x45\xfe\x3d\x15\xf9\x0f\x56\xe4\x7f\xa6\x22\xff\xb3\x15\xf9"
        "\x0f\x55\xe4\x3f\x52\x91\xff\xb9\x8a\xfc\x8d\xae\xf4\x47\x19\xd7\xf5"
        "\x87\x71\x16\xfb\xe7\xf9\xfc\xc3\xf8\x28\xd7\x7f\x7a\x7d\xfe\x77\x56"
        "\xe4\x03\xa3\xeb\x67\x6f\xee\x7f\xe2\x99\xdf\x7e\xa7\xb1\xd4\xff\x7f"
        "\xba\x75\x3e\xa4\x5c\xc7\x3b\x92\xd3\xf5\xfc\xdb\xf9\xc7\x39\x1d\xaf"
        "\x7b\xa7\xb6\xf4\xcd\xbc\xb7\x73\xfa\x6f\x21\x7f\xbd\x9f\xef\x80\x71"
        "\x12\xc7\xcf\x88\xdf\xef\x0f\x57\xe4\x03\xa3\xab\xdc\xe7\xe5\xf3\x0d"
        "\x63\xa8\xd6\x7d\xc4\x9e\x7e\xc7\xad\xea\x75\x9c\xcf\x68\xf9\x7c\x8e"
        "\xbf\x90\xe3\x2f\xe6\xf8\xd1\x1c\xcf\xe6\x78\x2e\xc7\xfb\x73\x3c\xbf"
        "\x46\xed\xe3\xce\x78\xe2\x37\xbf\x3f\xf4\x6a\x6d\xf9\xf7\xfe\xf6\x90"
        "\xdf\xef\xfd\xe4\xb1\x3f\x50\xc7\x38\x51\x29\xa5\x03\x7d\xb6\x27\x9e"
        "\x1f\x18\xf4\x7e\xf6\x38\x8e\xdf\xa0\x6e\xb7\xfe\x15\x76\x07\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\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x18\x9a\x89\xe6\xdf\x85\x85\x99\x5a\x4a\x97"
        "\xde\x7a\xfd\xe8\xd3\xc7\x4f\xcf\xdd\x5c\x72\xb8\x55\xa2\xd1\xfc\x3b"
        "\xd5\x96\xaa\xb7\x9e\x97\xd2\x63\x39\x9e\xcc\xf1\x2f\xf2\x83\xeb\x1f"
        "\xbe\x72\xb2\x3d\xbe\x91\xe3\x5a\x9a\x4f\xb5\x54\x6b\x2d\x4f\x4f\x5d"
        "\x6b\xd5\xb4\x35\xa5\x74\x3e\xed\x4d\x97\x53\x23\xed\xbe\x74\xe5\xb5"
        "\x77\xe6\x9f\x3c\x7e\xe1\xd8\xc5\x7d\xef\xbe\x71\xe8\xea\x9d\x7b\x07"
        "\x00\x00\x00\x60\xe3\xfb\x7f\x00\x00\x00\xff\xff\xb0\xb8\x0e\x84",
        2634));
    NONFAILING(syz_mount_image(0x20000040, 0x20000a80, 0x808, 0x200000c0, 1,
                               0xa4a, 0x20001540));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x20000000, "./file0\000", 8));
    res = syscall(__NR_openat, 0xffffff9c, 0x20000000ul, 0ul, 0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    NONFAILING(memcpy((void*)0x20000380, "./file1\000", 8));
    res = syscall(__NR_openat, 0xffffff9c, 0x20000380ul, 0x141842ul, 0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    NONFAILING(memcpy(
        (void*)0x20004200,
        "\x1c\xef\xc4\xc4\x19\xfd\xb8\xd6\x6b\x12\xa7\xbb\xf3\x71\xd0\x56\xad"
        "\x6f\x01\xe9\x76\x2d\x70\x40\x1d\x1c\x9d\x33\x1b\x48\xb9\x25\xe9\xe6"
        "\xa7\x75\x9a\xbb\x20\x6b\x9b\x18\xbf\xc3\xf3\xf9\x6a\xdb\x2b\x37\xc2"
        "\x12\x1e\xf2\x1e\x91\xba\xc7\x68\xdd\x33\xdf\x29\x64\x9d\xa1\xd8\x2e"
        "\x82\x6a\x55\xc4\xd6\x20\xb6\xf5\x10\xda\xee\x26\x00\x4b\x74\x1c\x95"
        "\x1d\x52\x8d\x80\x6e\xfb\xe0\x0c\x43\x9f\x2d\xf4\x6d\x3a\xdf\x8b\xe2"
        "\x4e\x28\x0b\x94\x8a\x49\xaf\xd1\x7d\x56\x43\x7c\x6e\x75\x2d\x84\xf9"
        "\x9b\xf3\x7a\x88\xf0\xc5\x44\x88\xdd\x13\xb8\x48\xf2\x38\x1d\x7d\x2a"
        "\xec\xb6\x8e\xd1\x67\x62\xe4\xa3\xc1\xa8\x47\x56\x53\x64\xb9\xf1\xaf"
        "\x92\xc9\xc8\x9e\x06\xe8\x9f\xe6\x17\x9c\xb7\x07\x8a\x74\x2c\xb9\x68"
        "\xa9\xf0\x9c\xc6\x90\xdc\x47\x3d\xf2\x9d\x6a\xd9\xaf\x58\x79\xe9\xa2"
        "\x61\x8c\x63\x70\x21\x17\xa3\xa6\x3d\x3a\x42\x36\xba\xee\x86\xf5\xf4"
        "\x52\xe9\x66\x3a\x79\x53\x06\xda\xbb\x97\xdb\x88\x43\x48\xab\x43\x7b"
        "\xdc\x13\xb7\xcf\xb0\x3e\xff\x1c\xf2\x16\xf0\x9d\x21\x07\x8e\x18\x52"
        "\xfc\x7c\x96\x41\x3d\x9d\x65\xc5\x2c\xe9\xba\xa6\xbc\x26\xde\x7f\x02"
        "\x87\x38\xa1\x71\x20\xde\x30\xa4\x33\xc9\xc3\xc8\xe2\x76\xf3\xae\x5e"
        "\x18\xa1\xf9\x57\x67\xff\xfe\x8e\x98\xb0\xc3\xf1\x34\xf1\x22\x63\xb0"
        "\x1c\x36\x86\x6d\x4e\x0e\x85\x6c\xc1\x4e\xcf\x50\x27\x9a\xdb\x94\x38"
        "\xc6\x21\x9c\x49\xca\xe9\x73\xd8\xe7\xfa\xf3\x3d\xcd\xeb\x96\xd7\xef"
        "\x7e\x89\xae\x82\x8c\xb9\x1d\xf2\x29\x39\x30\x7b\xb1\xf7\xfb\x73\x92"
        "\xe1\xe2\x4f\x6b\x63\x16\x6b\x89\x93\x7c\x00\xeb\x8f\xea\x02\x45\xcd"
        "\x93\xe4\xaa\x80\x31\x60\xbd\x71\xc1\xa0\xbb\xb6\xb8\x28\x5d\x8a\xb6"
        "\x54\x48\x5a\xb9\x85\xf1\xdd\x2e\xb9\xab\xf5\x31\x31\xa9\x68\x0d\xca"
        "\xfe\x40\x00\xd3\xea\x52\x8d\xd5\x2a\xba\x3e\x4f\xf6\xa3\x88\x3e\xc6"
        "\x14\x25\x3d\x56\x27\xbd\x91\x52\x2d\x88\x11\x28\x32\x8e\xd1\xe0\x09"
        "\x07\xfa\x6c\xc4\x8c\xec\x52\x68\xbb\xed\xd8\x5e\xc0\x2d\x8b\xac\x31"
        "\x83\x46\x0d\xd1\xa2\x7f\xbc\x06\xb5\x64\x24\x73\xa4\x1a\x6c\xbf\xb0"
        "\x7f\x53\xde\xab\x24\x73\xb3\x7c\x3d\x10\xa1\x25\xd6\x10\xf1\xb9\xea"
        "\x5c\x83\xe7\xd4\x62\x04\x8f\x25\xfc\x1e\x79\x29\x5e\xef\xf7\x50\xa2"
        "\x3f\xaf\x5d\x54\x27\x58\xc4\x21\xbb\x06\x73\x50\x4c\x9d\xba\xe2\x95"
        "\x9f\x77",
        512));
    syscall(__NR_write, r[1], 0x20004200ul, 0xffe00ul);
    break;
  case 4:
    NONFAILING(memcpy((void*)0x20000380, "./file1\000", 8));
    syscall(__NR_openat, 0xffffff9c, 0x20000380ul, 0x141842ul, 0ul);
    break;
  case 5:
    NONFAILING(*(uint32_t*)0x20000080 = 0x40000);
    NONFAILING(*(uint64_t*)0x20000088 = 0);
    NONFAILING(*(uint64_t*)0x20000090 = 0);
    NONFAILING(*(uint64_t*)0x20000098 = 0);
    NONFAILING(*(uint32_t*)0x200000a0 = 0);
    NONFAILING(*(uint16_t*)0x200000a4 = 0);
    NONFAILING(*(uint16_t*)0x200000a6 = 0);
    syscall(__NR_ioctl, r[0], 0x40086e8b, 0x20000080ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  setup_sysctl();
  setup_802154();
  install_segv_handler();
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}