// https://syzkaller.appspot.com/bug?id=ebeba334a8a886e3d5dc25641e201e894d4d9657
// 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 <net/if_arp.h>
#include <netinet/in.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/if_addr.h>
#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/if_tun.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

unsigned long long procid;

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) &&
      (addr < prog_start || addr > prog_end)) {
    _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(...)                                                        \
  {                                                                            \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    }                                                                          \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
  }

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;
}

static struct {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[1024];
} nlmsg;

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

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

static int netlink_send(int sock)
{
  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;
  unsigned n = sendto(sock, nlmsg.buf, hdr->nlmsg_len, 0,
                      (struct sockaddr*)&addr, sizeof(addr));
  if (n != hdr->nlmsg_len)
    exit(1);
  n = recv(sock, nlmsg.buf, sizeof(nlmsg.buf), 0);
  if (n < sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))
    exit(1);
  if (hdr->nlmsg_type != NLMSG_ERROR)
    exit(1);
  return -((struct nlmsgerr*)(hdr + 1))->error;
}

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

static void netlink_add_device(int sock, const char* type, const char* name)
{
  netlink_add_device_impl(type, name);
  netlink_done();
  int err = netlink_send(sock);
  (void)err;
}

static void netlink_add_veth(int sock, const char* name, const char* peer)
{
  netlink_add_device_impl("veth", name);
  netlink_nest(IFLA_INFO_DATA);
  netlink_nest(VETH_INFO_PEER);
  nlmsg.pos += sizeof(struct ifinfomsg);
  netlink_attr(IFLA_IFNAME, peer, strlen(peer));
  netlink_done();
  netlink_done();
  netlink_done();
  int err = netlink_send(sock);
  (void)err;
}

static void netlink_add_hsr(int sock, const char* name, const char* slave1,
                            const char* slave2)
{
  netlink_add_device_impl("hsr", name);
  netlink_nest(IFLA_INFO_DATA);
  int ifindex1 = if_nametoindex(slave1);
  netlink_attr(IFLA_HSR_SLAVE1, &ifindex1, sizeof(ifindex1));
  int ifindex2 = if_nametoindex(slave2);
  netlink_attr(IFLA_HSR_SLAVE2, &ifindex2, sizeof(ifindex2));
  netlink_done();
  netlink_done();
  int err = netlink_send(sock);
  (void)err;
}

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

static int netlink_add_addr(int sock, const char* dev, const void* addr,
                            int addrsize)
{
  struct ifaddrmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ifa_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ifa_prefixlen = addrsize == 4 ? 24 : 120;
  hdr.ifa_scope = RT_SCOPE_UNIVERSE;
  hdr.ifa_index = if_nametoindex(dev);
  netlink_init(RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr, sizeof(hdr));
  netlink_attr(IFA_LOCAL, addr, addrsize);
  netlink_attr(IFA_ADDRESS, addr, addrsize);
  return netlink_send(sock);
}

static void netlink_add_addr4(int sock, const char* dev, const char* addr)
{
  struct in_addr in_addr;
  inet_pton(AF_INET, addr, &in_addr);
  int err = netlink_add_addr(sock, dev, &in_addr, sizeof(in_addr));
  (void)err;
}

static void netlink_add_addr6(int sock, const char* dev, const char* addr)
{
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, addr, &in6_addr);
  int err = netlink_add_addr(sock, dev, &in6_addr, sizeof(in6_addr));
  (void)err;
}

static void netlink_add_neigh(int sock, const char* name, const void* addr,
                              int addrsize, const void* mac, int macsize)
{
  struct ndmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ndm_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ndm_ifindex = if_nametoindex(name);
  hdr.ndm_state = NUD_PERMANENT;
  netlink_init(RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr, sizeof(hdr));
  netlink_attr(NDA_DST, addr, addrsize);
  netlink_attr(NDA_LLADDR, mac, macsize);
  int err = netlink_send(sock);
  (void)err;
}

static int tunfd = -1;
static int tun_frags_enabled;
#define SYZ_TUN_MAX_PACKET_SIZE 1000

#define TUN_IFACE "syz_tun"

#define LOCAL_MAC 0xaaaaaaaaaaaa
#define REMOTE_MAC 0xaaaaaaaaaabb

#define LOCAL_IPV4 "172.20.20.170"
#define REMOTE_IPV4 "172.20.20.187"

#define LOCAL_IPV6 "fe80::aa"
#define REMOTE_IPV6 "fe80::bb"

#define IFF_NAPI 0x0010
#define IFF_NAPI_FRAGS 0x0020

static void initialize_tun(void)
{
  tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
  if (tunfd == -1) {
    printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n");
    printf("otherwise fuzzing or reproducing might not work as intended\n");
    return;
  }
  const int kTunFd = 240;
  if (dup2(tunfd, kTunFd) < 0)
    exit(1);
  close(tunfd);
  tunfd = kTunFd;
  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, TUN_IFACE, IFNAMSIZ);
  ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_NAPI | IFF_NAPI_FRAGS;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
    if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0)
      exit(1);
  }
  if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0)
    exit(1);
  tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0;
  char sysctl[64];
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/accept_dad", TUN_IFACE);
  write_file(sysctl, "0");
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/router_solicitations", TUN_IFACE);
  write_file(sysctl, "0");
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  netlink_add_addr4(sock, TUN_IFACE, LOCAL_IPV4);
  netlink_add_addr6(sock, TUN_IFACE, LOCAL_IPV6);
  uint64_t macaddr = REMOTE_MAC;
  struct in_addr in_addr;
  inet_pton(AF_INET, REMOTE_IPV4, &in_addr);
  netlink_add_neigh(sock, TUN_IFACE, &in_addr, sizeof(in_addr), &macaddr,
                    ETH_ALEN);
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, REMOTE_IPV6, &in6_addr);
  netlink_add_neigh(sock, TUN_IFACE, &in6_addr, sizeof(in6_addr), &macaddr,
                    ETH_ALEN);
  macaddr = LOCAL_MAC;
  netlink_device_change(sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN);
  close(sock);
}

#define DEV_IPV4 "172.20.20.%d"
#define DEV_IPV6 "fe80::%02hx"
#define DEV_MAC 0x00aaaaaaaaaa
static void initialize_netdevices(void)
{
  char netdevsim[16];
  sprintf(netdevsim, "netdevsim%d", (int)procid);
  struct {
    const char* type;
    const char* dev;
  } devtypes[] = {
      {"ip6gretap", "ip6gretap0"}, {"bridge", "bridge0"},
      {"vcan", "vcan0"},           {"bond", "bond0"},
      {"team", "team0"},           {"dummy", "dummy0"},
      {"nlmon", "nlmon0"},         {"caif", "caif0"},
      {"batadv", "batadv0"},       {"vxcan", "vxcan1"},
      {"netdevsim", netdevsim},    {"veth", 0},
  };
  const char* devmasters[] = {"bridge", "bond", "team"};
  struct {
    const char* name;
    int macsize;
    bool noipv6;
  } devices[] = {
      {"lo", ETH_ALEN},
      {"sit0", 0},
      {"bridge0", ETH_ALEN},
      {"vcan0", 0, true},
      {"tunl0", 0},
      {"gre0", 0},
      {"gretap0", ETH_ALEN},
      {"ip_vti0", 0},
      {"ip6_vti0", 0},
      {"ip6tnl0", 0},
      {"ip6gre0", 0},
      {"ip6gretap0", ETH_ALEN},
      {"erspan0", ETH_ALEN},
      {"bond0", ETH_ALEN},
      {"veth0", ETH_ALEN},
      {"veth1", ETH_ALEN},
      {"team0", ETH_ALEN},
      {"veth0_to_bridge", ETH_ALEN},
      {"veth1_to_bridge", ETH_ALEN},
      {"veth0_to_bond", ETH_ALEN},
      {"veth1_to_bond", ETH_ALEN},
      {"veth0_to_team", ETH_ALEN},
      {"veth1_to_team", ETH_ALEN},
      {"veth0_to_hsr", ETH_ALEN},
      {"veth1_to_hsr", ETH_ALEN},
      {"hsr0", 0},
      {"dummy0", ETH_ALEN},
      {"nlmon0", 0},
      {"vxcan1", 0, true},
      {"caif0", ETH_ALEN},
      {"batadv0", ETH_ALEN},
      {netdevsim, ETH_ALEN},
  };
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++)
    netlink_add_device(sock, devtypes[i].type, devtypes[i].dev);
  for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) {
    char master[32], slave0[32], veth0[32], slave1[32], veth1[32];
    sprintf(slave0, "%s_slave_0", devmasters[i]);
    sprintf(veth0, "veth0_to_%s", devmasters[i]);
    netlink_add_veth(sock, slave0, veth0);
    sprintf(slave1, "%s_slave_1", devmasters[i]);
    sprintf(veth1, "veth1_to_%s", devmasters[i]);
    netlink_add_veth(sock, slave1, veth1);
    sprintf(master, "%s0", devmasters[i]);
    netlink_device_change(sock, slave0, false, master, 0, 0);
    netlink_device_change(sock, slave1, false, master, 0, 0);
  }
  netlink_device_change(sock, "bridge_slave_0", true, 0, 0, 0);
  netlink_device_change(sock, "bridge_slave_1", true, 0, 0, 0);
  netlink_add_veth(sock, "hsr_slave_0", "veth0_to_hsr");
  netlink_add_veth(sock, "hsr_slave_1", "veth1_to_hsr");
  netlink_add_hsr(sock, "hsr0", "hsr_slave_0", "hsr_slave_1");
  netlink_device_change(sock, "hsr_slave_0", true, 0, 0, 0);
  netlink_device_change(sock, "hsr_slave_1", true, 0, 0, 0);
  for (i = 0; i < sizeof(devices) / (sizeof(devices[0])); i++) {
    char addr[32];
    sprintf(addr, DEV_IPV4, i + 10);
    netlink_add_addr4(sock, devices[i].name, addr);
    if (!devices[i].noipv6) {
      sprintf(addr, DEV_IPV6, i + 10);
      netlink_add_addr6(sock, devices[i].name, addr);
    }
    uint64_t macaddr = DEV_MAC + ((i + 10ull) << 40);
    netlink_device_change(sock, devices[i].name, true, 0, &macaddr,
                          devices[i].macsize);
  }
  close(sock);
}
static void initialize_netdevices_init(void)
{
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  struct {
    const char* type;
    int macsize;
    bool noipv6;
    bool noup;
  } devtypes[] = {
      {"nr", 7, true}, {"rose", 5, true, true},
  };
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++) {
    char dev[32], addr[32];
    sprintf(dev, "%s%d", devtypes[i].type, (int)procid);
    sprintf(addr, "172.30.%d.%d", i, (int)procid + 1);
    netlink_add_addr4(sock, dev, addr);
    if (!devtypes[i].noipv6) {
      sprintf(addr, "fe88::%02hx:%02hx", i, (int)procid + 1);
      netlink_add_addr6(sock, dev, addr);
    }
    int macsize = devtypes[i].macsize;
    uint64_t macaddr = 0xbbbbbb +
                       ((unsigned long long)i << (8 * (macsize - 2))) +
                       (procid << (8 * (macsize - 1)));
    netlink_device_change(sock, dev, !devtypes[i].noup, 0, &macaddr, macsize);
  }
  close(sock);
}

static int read_tun(char* data, int size)
{
  if (tunfd < 0)
    return -1;
  int rv = read(tunfd, data, size);
  if (rv < 0) {
    if (errno == EAGAIN)
      return -1;
    if (errno == EBADFD)
      return -1;
    exit(1);
  }
  return rv;
}

static void flush_tun()
{
  char data[SYZ_TUN_MAX_PACKET_SIZE];
  while (read_tun(&data[0], sizeof(data)) != -1) {
  }
}

#define XT_TABLE_SIZE 1536
#define XT_MAX_ENTRIES 10

struct xt_counters {
  uint64_t pcnt, bcnt;
};

struct ipt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_entries;
  unsigned int size;
};

struct ipt_get_entries {
  char name[32];
  unsigned int size;
  void* entrytable[XT_TABLE_SIZE / sizeof(void*)];
};

struct ipt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_counters;
  struct xt_counters* counters;
  char entrytable[XT_TABLE_SIZE];
};

struct ipt_table_desc {
  const char* name;
  struct ipt_getinfo info;
  struct ipt_replace replace;
};

static struct ipt_table_desc ipv4_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

static struct ipt_table_desc ipv6_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

#define IPT_BASE_CTL 64
#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
#define IPT_SO_GET_INFO (IPT_BASE_CTL)
#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)

struct arpt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_entries;
  unsigned int size;
};

struct arpt_get_entries {
  char name[32];
  unsigned int size;
  void* entrytable[XT_TABLE_SIZE / sizeof(void*)];
};

struct arpt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_counters;
  struct xt_counters* counters;
  char entrytable[XT_TABLE_SIZE];
};

struct arpt_table_desc {
  const char* name;
  struct arpt_getinfo info;
  struct arpt_replace replace;
};

static struct arpt_table_desc arpt_tables[] = {
    {.name = "filter"},
};

#define ARPT_BASE_CTL 96
#define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL)
#define ARPT_SO_GET_INFO (ARPT_BASE_CTL)
#define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1)

static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables,
                                int family, int level)
{
  struct ipt_get_entries entries;
  socklen_t optlen;
  int fd, i;
  fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    optlen = sizeof(table->info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_iptables(struct ipt_table_desc* tables, int num_tables,
                           int family, int level)
{
  struct xt_counters counters[XT_MAX_ENTRIES];
  struct ipt_get_entries entries;
  struct ipt_getinfo info;
  socklen_t optlen;
  int fd, i;
  fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    optlen = sizeof(info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    }
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_arptables(void)
{
  struct arpt_get_entries entries;
  socklen_t optlen;
  unsigned i;
  int fd;
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    optlen = sizeof(table->info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_arptables()
{
  struct xt_counters counters[XT_MAX_ENTRIES];
  struct arpt_get_entries entries;
  struct arpt_getinfo info;
  socklen_t optlen;
  unsigned i;
  int fd;
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    optlen = sizeof(info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    } else {
    }
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

#define NF_BR_NUMHOOKS 6
#define EBT_TABLE_MAXNAMELEN 32
#define EBT_CHAIN_MAXNAMELEN 32
#define EBT_BASE_CTL 128
#define EBT_SO_SET_ENTRIES (EBT_BASE_CTL)
#define EBT_SO_GET_INFO (EBT_BASE_CTL)
#define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1)
#define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1)
#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1)

struct ebt_replace {
  char name[EBT_TABLE_MAXNAMELEN];
  unsigned int valid_hooks;
  unsigned int nentries;
  unsigned int entries_size;
  struct ebt_entries* hook_entry[NF_BR_NUMHOOKS];
  unsigned int num_counters;
  struct ebt_counter* counters;
  char* entries;
};

struct ebt_entries {
  unsigned int distinguisher;
  char name[EBT_CHAIN_MAXNAMELEN];
  unsigned int counter_offset;
  int policy;
  unsigned int nentries;
  char data[0] __attribute__((aligned(__alignof__(struct ebt_replace))));
};

struct ebt_table_desc {
  const char* name;
  struct ebt_replace replace;
  char entrytable[XT_TABLE_SIZE];
};

static struct ebt_table_desc ebt_tables[] = {
    {.name = "filter"}, {.name = "nat"}, {.name = "broute"},
};

static void checkpoint_ebtables(void)
{
  socklen_t optlen;
  unsigned i;
  int fd;
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    strcpy(table->replace.name, table->name);
    optlen = sizeof(table->replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace,
                   &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->replace.entries_size > sizeof(table->entrytable))
      exit(1);
    table->replace.num_counters = 0;
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace,
                   &optlen))
      exit(1);
  }
  close(fd);
}

static void reset_ebtables()
{
  struct ebt_replace replace;
  char entrytable[XT_TABLE_SIZE];
  socklen_t optlen;
  unsigned i, j, h;
  int fd;
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
      return;
    }
    exit(1);
  }
  for (i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    if (table->replace.valid_hooks == 0)
      continue;
    memset(&replace, 0, sizeof(replace));
    strcpy(replace.name, table->name);
    optlen = sizeof(replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen))
      exit(1);
    replace.num_counters = 0;
    table->replace.entries = 0;
    for (h = 0; h < NF_BR_NUMHOOKS; h++)
      table->replace.hook_entry[h] = 0;
    if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) {
      memset(&entrytable, 0, sizeof(entrytable));
      replace.entries = entrytable;
      optlen = sizeof(replace) + replace.entries_size;
      if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen))
        exit(1);
      if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0)
        continue;
    }
    for (j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) {
      if (table->replace.valid_hooks & (1 << h)) {
        table->replace.hook_entry[h] =
            (struct ebt_entries*)table->entrytable + j;
        j++;
      }
    }
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_net_namespace(void)
{
  checkpoint_ebtables();
  checkpoint_arptables();
  checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                      AF_INET, SOL_IP);
  checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                      AF_INET6, SOL_IPV6);
}

static void reset_net_namespace(void)
{
  reset_ebtables();
  reset_arptables();
  reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                 AF_INET, SOL_IP);
  reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                 AF_INET6, SOL_IPV6);
}

static void setup_common()
{
  if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  setsid();
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = 200 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 0;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

int wait_for_loop(int pid)
{
  if (pid < 0)
    exit(1);
  int status = 0;
  while (waitpid(-1, &status, __WALL) != pid) {
  }
  return WEXITSTATUS(status);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  setup_common();
  sandbox_common();
  initialize_netdevices_init();
  if (unshare(CLONE_NEWNET)) {
  }
  initialize_tun();
  initialize_netdevices();
  loop();
  exit(1);
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  DIR* dp;
  struct dirent* ep;
  int iter = 0;
retry:
  while (umount2(dir, MNT_DETACH) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  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, MNT_DETACH) == 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, MNT_DETACH))
        exit(1);
    }
  }
  closedir(dp);
  int i;
  for (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, MNT_DETACH))
          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);
  int i;
  for (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) {
  }
}

#define SYZ_HAVE_SETUP_LOOP 1
static void setup_loop()
{
  checkpoint_net_namespace();
}

#define SYZ_HAVE_RESET_LOOP 1
static void reset_loop()
{
  reset_net_namespace();
}

#define SYZ_HAVE_SETUP_TEST 1
static void setup_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  flush_tun();
}

#define SYZ_HAVE_RESET_TEST 1
static void reset_test()
{
  int fd;
  for (fd = 3; fd < 30; fd++)
    close(fd);
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  setup_loop();
  int iter;
  for (iter = 0;; 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();
      reset_test();
      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 < 5 * 1000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  long res = 0;
  res = syscall(__NR_socket, 0x10, 3, 6);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint64_t*)0x2014f000 = 0);
  NONFAILING(*(uint32_t*)0x2014f008 = 0);
  NONFAILING(*(uint64_t*)0x2014f010 = 0x200bfff0);
  NONFAILING(*(uint64_t*)0x200bfff0 = 0x20006440);
  NONFAILING(*(uint32_t*)0x20006440 = 0xb8);
  NONFAILING(*(uint16_t*)0x20006444 = 0x19);
  NONFAILING(*(uint16_t*)0x20006446 = 1);
  NONFAILING(*(uint32_t*)0x20006448 = 0);
  NONFAILING(*(uint32_t*)0x2000644c = 0);
  NONFAILING(*(uint8_t*)0x20006450 = -1);
  NONFAILING(*(uint8_t*)0x20006451 = 1);
  NONFAILING(*(uint8_t*)0x20006452 = 0);
  NONFAILING(*(uint8_t*)0x20006453 = 0);
  NONFAILING(*(uint8_t*)0x20006454 = 0);
  NONFAILING(*(uint8_t*)0x20006455 = 0);
  NONFAILING(*(uint8_t*)0x20006456 = 0);
  NONFAILING(*(uint8_t*)0x20006457 = 0);
  NONFAILING(*(uint8_t*)0x20006458 = 0);
  NONFAILING(*(uint8_t*)0x20006459 = 0);
  NONFAILING(*(uint8_t*)0x2000645a = 0);
  NONFAILING(*(uint8_t*)0x2000645b = 0);
  NONFAILING(*(uint8_t*)0x2000645c = 0);
  NONFAILING(*(uint8_t*)0x2000645d = 0);
  NONFAILING(*(uint8_t*)0x2000645e = -1);
  NONFAILING(*(uint8_t*)0x2000645f = 1);
  NONFAILING(*(uint32_t*)0x20006460 = htobe32(0xe0000001));
  NONFAILING(*(uint16_t*)0x20006470 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20006472 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20006474 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20006476 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20006478 = 0xa);
  NONFAILING(*(uint8_t*)0x2000647a = 0x60);
  NONFAILING(*(uint8_t*)0x2000647b = 0);
  NONFAILING(*(uint8_t*)0x2000647c = 0);
  NONFAILING(*(uint32_t*)0x20006480 = 0);
  NONFAILING(*(uint32_t*)0x20006484 = 0);
  NONFAILING(*(uint64_t*)0x20006488 = 0);
  NONFAILING(*(uint64_t*)0x20006490 = 0);
  NONFAILING(*(uint64_t*)0x20006498 = 0);
  NONFAILING(*(uint64_t*)0x200064a0 = 0);
  NONFAILING(*(uint64_t*)0x200064a8 = 0);
  NONFAILING(*(uint64_t*)0x200064b0 = 0);
  NONFAILING(*(uint64_t*)0x200064b8 = 0);
  NONFAILING(*(uint64_t*)0x200064c0 = 0);
  NONFAILING(*(uint64_t*)0x200064c8 = 0);
  NONFAILING(*(uint64_t*)0x200064d0 = 0);
  NONFAILING(*(uint64_t*)0x200064d8 = 0);
  NONFAILING(*(uint64_t*)0x200064e0 = 0);
  NONFAILING(*(uint32_t*)0x200064e8 = 0);
  NONFAILING(*(uint32_t*)0x200064ec = 0);
  NONFAILING(*(uint8_t*)0x200064f0 = 0);
  NONFAILING(*(uint8_t*)0x200064f1 = 0);
  NONFAILING(*(uint8_t*)0x200064f2 = 0);
  NONFAILING(*(uint8_t*)0x200064f3 = 0);
  NONFAILING(*(uint64_t*)0x200bfff8 = 0xb8);
  NONFAILING(*(uint64_t*)0x2014f018 = 1);
  NONFAILING(*(uint64_t*)0x2014f020 = 0);
  NONFAILING(*(uint64_t*)0x2014f028 = 0);
  NONFAILING(*(uint32_t*)0x2014f030 = 0);
  syscall(__NR_sendmsg, r[0], 0x2014f000, 0);
  NONFAILING(*(uint64_t*)0x20000780 = 0);
  NONFAILING(*(uint32_t*)0x20000788 = 0);
  NONFAILING(*(uint64_t*)0x20000790 = 0x20000740);
  NONFAILING(*(uint64_t*)0x20000740 = 0x20000280);
  NONFAILING(*(uint32_t*)0x20000280 = 0x440);
  NONFAILING(*(uint16_t*)0x20000284 = 0x24);
  NONFAILING(*(uint16_t*)0x20000286 = 1);
  NONFAILING(*(uint32_t*)0x20000288 = 0x70bd2c);
  NONFAILING(*(uint32_t*)0x2000028c = 0x25dfdbfb);
  NONFAILING(*(uint32_t*)0x20000290 = 0x45f);
  NONFAILING(*(uint16_t*)0x20000294 = 0xc);
  NONFAILING(*(uint16_t*)0x20000296 = 0x15);
  NONFAILING(*(uint32_t*)0x20000298 = 0x35075b);
  NONFAILING(*(uint32_t*)0x2000029c = 0);
  NONFAILING(*(uint16_t*)0x200002a0 = 8);
  NONFAILING(*(uint16_t*)0x200002a2 = 3);
  NONFAILING(*(uint8_t*)0x200002a4 = 0x15);
  NONFAILING(*(uint8_t*)0x200002a5 = 0xc);
  NONFAILING(*(uint16_t*)0x200002a8 = 0x10);
  NONFAILING(*(uint16_t*)0x200002aa = 0xa);
  NONFAILING(*(uint32_t*)0x200002ac = 0x70bd2b);
  NONFAILING(*(uint32_t*)0x200002b0 = 0x70bd2b);
  NONFAILING(*(uint32_t*)0x200002b4 = 8);
  NONFAILING(*(uint16_t*)0x200002b8 = 0x284);
  NONFAILING(*(uint16_t*)0x200002ba = 5);
  NONFAILING(*(uint8_t*)0x200002bc = 0xac);
  NONFAILING(*(uint8_t*)0x200002bd = 0x1e);
  NONFAILING(*(uint8_t*)0x200002be = 0);
  NONFAILING(*(uint8_t*)0x200002bf = 1 + procid * 1);
  NONFAILING(*(uint32_t*)0x200002cc = htobe32(0x4d3));
  NONFAILING(*(uint8_t*)0x200002d0 = 0x6c);
  NONFAILING(*(uint16_t*)0x200002d4 = 2);
  NONFAILING(*(uint8_t*)0x200002d8 = 0);
  NONFAILING(*(uint8_t*)0x200002d9 = 0);
  NONFAILING(*(uint8_t*)0x200002da = 0);
  NONFAILING(*(uint8_t*)0x200002db = 0);
  NONFAILING(*(uint8_t*)0x200002dc = 0);
  NONFAILING(*(uint8_t*)0x200002dd = 0);
  NONFAILING(*(uint8_t*)0x200002de = 0);
  NONFAILING(*(uint8_t*)0x200002df = 0);
  NONFAILING(*(uint8_t*)0x200002e0 = 0);
  NONFAILING(*(uint8_t*)0x200002e1 = 0);
  NONFAILING(*(uint8_t*)0x200002e2 = -1);
  NONFAILING(*(uint8_t*)0x200002e3 = -1);
  NONFAILING(*(uint32_t*)0x200002e4 = htobe32(0xe0000001));
  NONFAILING(*(uint32_t*)0x200002e8 = 0);
  NONFAILING(*(uint8_t*)0x200002ec = 4);
  NONFAILING(*(uint8_t*)0x200002ed = 3);
  NONFAILING(*(uint8_t*)0x200002ee = 0);
  NONFAILING(*(uint32_t*)0x200002f0 = 2);
  NONFAILING(*(uint32_t*)0x200002f4 = 0xbc);
  NONFAILING(*(uint32_t*)0x200002f8 = 0);
  NONFAILING(*(uint8_t*)0x200002fc = 0xfe);
  NONFAILING(*(uint8_t*)0x200002fd = 0x80);
  NONFAILING(*(uint8_t*)0x200002fe = 0);
  NONFAILING(*(uint8_t*)0x200002ff = 0);
  NONFAILING(*(uint8_t*)0x20000300 = 0);
  NONFAILING(*(uint8_t*)0x20000301 = 0);
  NONFAILING(*(uint8_t*)0x20000302 = 0);
  NONFAILING(*(uint8_t*)0x20000303 = 0);
  NONFAILING(*(uint8_t*)0x20000304 = 0);
  NONFAILING(*(uint8_t*)0x20000305 = 0);
  NONFAILING(*(uint8_t*)0x20000306 = 0);
  NONFAILING(*(uint8_t*)0x20000307 = 0);
  NONFAILING(*(uint8_t*)0x20000308 = 0);
  NONFAILING(*(uint8_t*)0x20000309 = 0);
  NONFAILING(*(uint8_t*)0x2000030a = 0);
  NONFAILING(*(uint8_t*)0x2000030b = 0xbb);
  NONFAILING(*(uint32_t*)0x2000030c = htobe32(0x4d2));
  NONFAILING(*(uint8_t*)0x20000310 = 0x3c);
  NONFAILING(*(uint16_t*)0x20000314 = 0xa);
  NONFAILING(*(uint8_t*)0x20000318 = 0xac);
  NONFAILING(*(uint8_t*)0x20000319 = 0x14);
  NONFAILING(*(uint8_t*)0x2000031a = 0x14);
  NONFAILING(*(uint8_t*)0x2000031b = 0x13);
  NONFAILING(*(uint32_t*)0x20000328 = 0x3501);
  NONFAILING(*(uint8_t*)0x2000032c = 3);
  NONFAILING(*(uint8_t*)0x2000032d = 0);
  NONFAILING(*(uint8_t*)0x2000032e = 4);
  NONFAILING(*(uint32_t*)0x20000330 = 0x80);
  NONFAILING(*(uint32_t*)0x20000334 = 4);
  NONFAILING(*(uint32_t*)0x20000338 = 0);
  NONFAILING(*(uint8_t*)0x2000033c = 0);
  NONFAILING(*(uint8_t*)0x2000033d = 0);
  NONFAILING(*(uint8_t*)0x2000033e = 0);
  NONFAILING(*(uint8_t*)0x2000033f = 0);
  NONFAILING(*(uint8_t*)0x20000340 = 0);
  NONFAILING(*(uint8_t*)0x20000341 = 0);
  NONFAILING(*(uint8_t*)0x20000342 = 0);
  NONFAILING(*(uint8_t*)0x20000343 = 0);
  NONFAILING(*(uint8_t*)0x20000344 = 0);
  NONFAILING(*(uint8_t*)0x20000345 = 0);
  NONFAILING(*(uint8_t*)0x20000346 = -1);
  NONFAILING(*(uint8_t*)0x20000347 = -1);
  NONFAILING(*(uint32_t*)0x20000348 = htobe32(0x7f000001));
  NONFAILING(*(uint32_t*)0x2000034c = htobe32(0x4d4));
  NONFAILING(*(uint8_t*)0x20000350 = 0x6c);
  NONFAILING(*(uint16_t*)0x20000354 = 0xa);
  NONFAILING(*(uint8_t*)0x20000358 = -1);
  NONFAILING(*(uint8_t*)0x20000359 = 1);
  NONFAILING(*(uint8_t*)0x2000035a = 0);
  NONFAILING(*(uint8_t*)0x2000035b = 0);
  NONFAILING(*(uint8_t*)0x2000035c = 0);
  NONFAILING(*(uint8_t*)0x2000035d = 0);
  NONFAILING(*(uint8_t*)0x2000035e = 0);
  NONFAILING(*(uint8_t*)0x2000035f = 0);
  NONFAILING(*(uint8_t*)0x20000360 = 0);
  NONFAILING(*(uint8_t*)0x20000361 = 0);
  NONFAILING(*(uint8_t*)0x20000362 = 0);
  NONFAILING(*(uint8_t*)0x20000363 = 0);
  NONFAILING(*(uint8_t*)0x20000364 = 0);
  NONFAILING(*(uint8_t*)0x20000365 = 0);
  NONFAILING(*(uint8_t*)0x20000366 = 0);
  NONFAILING(*(uint8_t*)0x20000367 = 1);
  NONFAILING(*(uint32_t*)0x20000368 = 0x3505);
  NONFAILING(*(uint8_t*)0x2000036c = 6);
  NONFAILING(*(uint8_t*)0x2000036d = 2);
  NONFAILING(*(uint8_t*)0x2000036e = 7);
  NONFAILING(*(uint32_t*)0x20000370 = 0x1de);
  NONFAILING(*(uint32_t*)0x20000374 = 2);
  NONFAILING(*(uint32_t*)0x20000378 = 2);
  NONFAILING(*(uint8_t*)0x2000037c = 0xac);
  NONFAILING(*(uint8_t*)0x2000037d = 0x1e);
  NONFAILING(*(uint8_t*)0x2000037e = 1);
  NONFAILING(*(uint8_t*)0x2000037f = 1 + procid * 1);
  NONFAILING(*(uint32_t*)0x2000038c = htobe32(0x4d4));
  NONFAILING(*(uint8_t*)0x20000390 = -1);
  NONFAILING(*(uint16_t*)0x20000394 = 2);
  NONFAILING(*(uint32_t*)0x20000398 = htobe32(0x7f000001));
  NONFAILING(*(uint32_t*)0x200003a8 = 0);
  NONFAILING(*(uint8_t*)0x200003ac = 4);
  NONFAILING(*(uint8_t*)0x200003ad = 2);
  NONFAILING(*(uint8_t*)0x200003ae = 0);
  NONFAILING(*(uint32_t*)0x200003b0 = 0x7ae);
  NONFAILING(*(uint32_t*)0x200003b4 = 4);
  NONFAILING(*(uint32_t*)0x200003b8 = 0);
  NONFAILING(*(uint8_t*)0x200003bc = 0xfe);
  NONFAILING(*(uint8_t*)0x200003bd = 0x80);
  NONFAILING(*(uint8_t*)0x200003be = 0);
  NONFAILING(*(uint8_t*)0x200003bf = 0);
  NONFAILING(*(uint8_t*)0x200003c0 = 0);
  NONFAILING(*(uint8_t*)0x200003c1 = 0);
  NONFAILING(*(uint8_t*)0x200003c2 = 0);
  NONFAILING(*(uint8_t*)0x200003c3 = 0);
  NONFAILING(*(uint8_t*)0x200003c4 = 0);
  NONFAILING(*(uint8_t*)0x200003c5 = 0);
  NONFAILING(*(uint8_t*)0x200003c6 = 0);
  NONFAILING(*(uint8_t*)0x200003c7 = 0);
  NONFAILING(*(uint8_t*)0x200003c8 = 0);
  NONFAILING(*(uint8_t*)0x200003c9 = 0);
  NONFAILING(*(uint8_t*)0x200003ca = 0);
  NONFAILING(*(uint8_t*)0x200003cb = 0xf);
  NONFAILING(*(uint32_t*)0x200003cc = htobe32(0x4d5));
  NONFAILING(*(uint8_t*)0x200003d0 = -1);
  NONFAILING(*(uint16_t*)0x200003d4 = 2);
  NONFAILING(*(uint32_t*)0x200003d8 = htobe32(0xe0000002));
  NONFAILING(*(uint32_t*)0x200003e8 = 0);
  NONFAILING(*(uint8_t*)0x200003ec = 0);
  NONFAILING(*(uint8_t*)0x200003ed = 3);
  NONFAILING(*(uint8_t*)0x200003ee = 0);
  NONFAILING(*(uint32_t*)0x200003f0 = 5);
  NONFAILING(*(uint32_t*)0x200003f4 = 8);
  NONFAILING(*(uint32_t*)0x200003f8 = 0x80000001);
  NONFAILING(*(uint8_t*)0x200003fc = 0xac);
  NONFAILING(*(uint8_t*)0x200003fd = 0x14);
  NONFAILING(*(uint8_t*)0x200003fe = 0x14);
  NONFAILING(*(uint8_t*)0x200003ff = 0xbb);
  NONFAILING(*(uint32_t*)0x2000040c = htobe32(0x4d4));
  NONFAILING(*(uint8_t*)0x20000410 = 0x3f);
  NONFAILING(*(uint16_t*)0x20000414 = 0xa);
  NONFAILING(memcpy(
      (void*)0x20000418,
      "\x92\x8e\x92\x74\x15\xdc\x23\x09\x41\x11\x83\x90\xbc\xf0\xad\xbc", 16));
  NONFAILING(*(uint32_t*)0x20000428 = 0x3506);
  NONFAILING(*(uint8_t*)0x2000042c = 5);
  NONFAILING(*(uint8_t*)0x2000042d = 2);
  NONFAILING(*(uint8_t*)0x2000042e = 7);
  NONFAILING(*(uint32_t*)0x20000430 = 0x7fffffff);
  NONFAILING(*(uint32_t*)0x20000434 = 0x99a);
  NONFAILING(*(uint32_t*)0x20000438 = 0x1000);
  NONFAILING(*(uint8_t*)0x2000043c = 0xac);
  NONFAILING(*(uint8_t*)0x2000043d = 0x14);
  NONFAILING(*(uint8_t*)0x2000043e = 0x14);
  NONFAILING(*(uint8_t*)0x2000043f = 0xbb);
  NONFAILING(*(uint32_t*)0x2000044c = htobe32(0x4d5));
  NONFAILING(*(uint8_t*)0x20000450 = 0x6c);
  NONFAILING(*(uint16_t*)0x20000454 = 0xa);
  NONFAILING(*(uint8_t*)0x20000458 = 0xfe);
  NONFAILING(*(uint8_t*)0x20000459 = 0x80);
  NONFAILING(*(uint8_t*)0x2000045a = 0);
  NONFAILING(*(uint8_t*)0x2000045b = 0);
  NONFAILING(*(uint8_t*)0x2000045c = 0);
  NONFAILING(*(uint8_t*)0x2000045d = 0);
  NONFAILING(*(uint8_t*)0x2000045e = 0);
  NONFAILING(*(uint8_t*)0x2000045f = 0);
  NONFAILING(*(uint8_t*)0x20000460 = 0);
  NONFAILING(*(uint8_t*)0x20000461 = 0);
  NONFAILING(*(uint8_t*)0x20000462 = 0);
  NONFAILING(*(uint8_t*)0x20000463 = 0);
  NONFAILING(*(uint8_t*)0x20000464 = 0);
  NONFAILING(*(uint8_t*)0x20000465 = 0);
  NONFAILING(*(uint8_t*)0x20000466 = 0);
  NONFAILING(*(uint8_t*)0x20000467 = 0xaa);
  NONFAILING(*(uint32_t*)0x20000468 = 0x3504);
  NONFAILING(*(uint8_t*)0x2000046c = 6);
  NONFAILING(*(uint8_t*)0x2000046d = 0);
  NONFAILING(*(uint8_t*)0x2000046e = 2);
  NONFAILING(*(uint32_t*)0x20000470 = 8);
  NONFAILING(*(uint32_t*)0x20000474 = 9);
  NONFAILING(*(uint32_t*)0x20000478 = 0x76);
  NONFAILING(*(uint8_t*)0x2000047c = 0xac);
  NONFAILING(*(uint8_t*)0x2000047d = 0x14);
  NONFAILING(*(uint8_t*)0x2000047e = 0x14);
  NONFAILING(*(uint8_t*)0x2000047f = 0xaa);
  NONFAILING(*(uint32_t*)0x2000048c = htobe32(0x4d5));
  NONFAILING(*(uint8_t*)0x20000490 = 0x32);
  NONFAILING(*(uint16_t*)0x20000494 = 0);
  NONFAILING(*(uint64_t*)0x20000498 = htobe64(0));
  NONFAILING(*(uint64_t*)0x200004a0 = htobe64(1));
  NONFAILING(*(uint32_t*)0x200004a8 = 0x3500);
  NONFAILING(*(uint8_t*)0x200004ac = 3);
  NONFAILING(*(uint8_t*)0x200004ad = 3);
  NONFAILING(*(uint8_t*)0x200004ae = 0x20);
  NONFAILING(*(uint32_t*)0x200004b0 = 0x7ff);
  NONFAILING(*(uint32_t*)0x200004b4 = 2);
  NONFAILING(*(uint32_t*)0x200004b8 = 0xfffffff7);
  NONFAILING(*(uint32_t*)0x200004bc = htobe32(0));
  NONFAILING(*(uint32_t*)0x200004cc = htobe32(0x4d3));
  NONFAILING(*(uint8_t*)0x200004d0 = 0x6f);
  NONFAILING(*(uint16_t*)0x200004d4 = 0xa);
  NONFAILING(memcpy(
      (void*)0x200004d8,
      "\xc4\x90\x1a\xd4\x2e\x3f\xba\xda\x2f\xc6\x84\xd5\x05\xf9\x0a\x62", 16));
  NONFAILING(*(uint32_t*)0x200004e8 = 0);
  NONFAILING(*(uint8_t*)0x200004ec = 3);
  NONFAILING(*(uint8_t*)0x200004ed = 3);
  NONFAILING(*(uint8_t*)0x200004ee = 0xfc);
  NONFAILING(*(uint32_t*)0x200004f0 = 0x401);
  NONFAILING(*(uint32_t*)0x200004f4 = 3);
  NONFAILING(*(uint32_t*)0x200004f8 = 0x1ff);
  NONFAILING(*(uint32_t*)0x200004fc = htobe32(0x7f000001));
  NONFAILING(*(uint32_t*)0x2000050c = htobe32(0x4d4));
  NONFAILING(*(uint8_t*)0x20000510 = 0x33);
  NONFAILING(*(uint16_t*)0x20000514 = 0xa);
  NONFAILING(*(uint8_t*)0x20000518 = 0xac);
  NONFAILING(*(uint8_t*)0x20000519 = 0x1e);
  NONFAILING(*(uint8_t*)0x2000051a = 0);
  NONFAILING(*(uint8_t*)0x2000051b = 1 + procid * 1);
  NONFAILING(*(uint32_t*)0x20000528 = 0x3500);
  NONFAILING(*(uint8_t*)0x2000052c = 0);
  NONFAILING(*(uint8_t*)0x2000052d = 3);
  NONFAILING(*(uint8_t*)0x2000052e = 0x1d);
  NONFAILING(*(uint32_t*)0x20000530 = 4);
  NONFAILING(*(uint32_t*)0x20000534 = 0x4b);
  NONFAILING(*(uint32_t*)0x20000538 = 1);
  NONFAILING(*(uint16_t*)0x2000053c = 0x10);
  NONFAILING(*(uint16_t*)0x2000053e = 0xa);
  NONFAILING(*(uint32_t*)0x20000540 = 0x70bd2b);
  NONFAILING(*(uint32_t*)0x20000544 = 0x70bd2d);
  NONFAILING(*(uint32_t*)0x20000548 = 0x8000);
  NONFAILING(*(uint16_t*)0x2000054c = 0x4c);
  NONFAILING(*(uint16_t*)0x2000054e = 0x12);
  NONFAILING(memcpy((void*)0x20000550,
                    "morus640-"
                    "sse2\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
                    64));
  NONFAILING(*(uint32_t*)0x20000590 = 0);
  NONFAILING(*(uint32_t*)0x20000594 = 0xc0);
  NONFAILING(*(uint16_t*)0x20000598 = 0x44);
  NONFAILING(*(uint16_t*)0x2000059a = 5);
  NONFAILING(*(uint8_t*)0x2000059c = 0xac);
  NONFAILING(*(uint8_t*)0x2000059d = 0x14);
  NONFAILING(*(uint8_t*)0x2000059e = 0x14);
  NONFAILING(*(uint8_t*)0x2000059f = 0xaa);
  NONFAILING(*(uint32_t*)0x200005ac = htobe32(0x4d5));
  NONFAILING(*(uint8_t*)0x200005b0 = 0x6c);
  NONFAILING(*(uint16_t*)0x200005b4 = 0xa);
  NONFAILING(*(uint32_t*)0x200005b8 = htobe32(8));
  NONFAILING(*(uint32_t*)0x200005c8 = 0x3506);
  NONFAILING(*(uint8_t*)0x200005cc = 3);
  NONFAILING(*(uint8_t*)0x200005cd = 3);
  NONFAILING(*(uint8_t*)0x200005ce = 0);
  NONFAILING(*(uint32_t*)0x200005d0 = 3);
  NONFAILING(*(uint32_t*)0x200005d4 = 0x1f);
  NONFAILING(*(uint32_t*)0x200005d8 = 6);
  NONFAILING(*(uint16_t*)0x200005dc = 0xe4);
  NONFAILING(*(uint16_t*)0x200005de = 6);
  NONFAILING(*(uint8_t*)0x200005e0 = 0xac);
  NONFAILING(*(uint8_t*)0x200005e1 = 0x14);
  NONFAILING(*(uint8_t*)0x200005e2 = 0x14);
  NONFAILING(*(uint8_t*)0x200005e3 = 0xaa);
  NONFAILING(*(uint8_t*)0x200005f0 = 0xac);
  NONFAILING(*(uint8_t*)0x200005f1 = 0x1e);
  NONFAILING(*(uint8_t*)0x200005f2 = 1);
  NONFAILING(*(uint8_t*)0x200005f3 = 1 + procid * 1);
  NONFAILING(*(uint16_t*)0x20000600 = htobe16(0x4e23));
  NONFAILING(*(uint16_t*)0x20000602 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20000604 = htobe16(0x4e23));
  NONFAILING(*(uint16_t*)0x20000606 = htobe16(2));
  NONFAILING(*(uint16_t*)0x20000608 = 0xa);
  NONFAILING(*(uint8_t*)0x2000060a = 0xa0);
  NONFAILING(*(uint8_t*)0x2000060b = 0xa0);
  NONFAILING(*(uint8_t*)0x2000060c = 0x87);
  NONFAILING(*(uint32_t*)0x20000610 = 0);
  NONFAILING(*(uint32_t*)0x20000614 = 0);
  NONFAILING(*(uint32_t*)0x20000618 = htobe32(0xe0000001));
  NONFAILING(*(uint32_t*)0x20000628 = htobe32(0x4d6));
  NONFAILING(*(uint8_t*)0x2000062c = 0x2b);
  NONFAILING(*(uint32_t*)0x20000630 = htobe32(0xe0000001));
  NONFAILING(*(uint64_t*)0x20000640 = 0x100000001);
  NONFAILING(*(uint64_t*)0x20000648 = 1);
  NONFAILING(*(uint64_t*)0x20000650 = 2);
  NONFAILING(*(uint64_t*)0x20000658 = 0x1000);
  NONFAILING(*(uint64_t*)0x20000660 = 3);
  NONFAILING(*(uint64_t*)0x20000668 = 5);
  NONFAILING(*(uint64_t*)0x20000670 = 0x1df9);
  NONFAILING(*(uint64_t*)0x20000678 = 6);
  NONFAILING(*(uint64_t*)0x20000680 = 0x7fffffff);
  NONFAILING(*(uint64_t*)0x20000688 = -1);
  NONFAILING(*(uint64_t*)0x20000690 = 0x3ff);
  NONFAILING(*(uint64_t*)0x20000698 = 0x10001);
  NONFAILING(*(uint32_t*)0x200006a0 = 0x80);
  NONFAILING(*(uint32_t*)0x200006a4 = 0x7fffffff);
  NONFAILING(*(uint32_t*)0x200006a8 = 0x39f4);
  NONFAILING(*(uint32_t*)0x200006ac = 0x70bd2b);
  NONFAILING(*(uint32_t*)0x200006b0 = 0);
  NONFAILING(*(uint16_t*)0x200006b4 = 0xa);
  NONFAILING(*(uint8_t*)0x200006b6 = 4);
  NONFAILING(*(uint8_t*)0x200006b7 = 1);
  NONFAILING(*(uint8_t*)0x200006b8 = 0);
  NONFAILING(*(uint64_t*)0x20000748 = 0x440);
  NONFAILING(*(uint64_t*)0x20000798 = 1);
  NONFAILING(*(uint64_t*)0x200007a0 = 0);
  NONFAILING(*(uint64_t*)0x200007a8 = 0);
  NONFAILING(*(uint32_t*)0x200007b0 = 0x200040c0);
  syscall(__NR_sendmsg, r[0], 0x20000780, 0x40000);
}
int main(void)
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}