// https://syzkaller.appspot.com/bug?id=f9c94b10e49ae0433f27c4838c7e0f0a321606f5
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <linux/net.h>
#include <netinet/in.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

__attribute__((noreturn)) static void doexit(int status)
{
  volatile unsigned i;
  syscall(__NR_exit_group, status);
  for (i = 0;; i++) {
  }
}
#include <errno.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string.h>
#include <sys/stat.h>

const int kFailStatus = 67;
const int kRetryStatus = 69;

static void fail(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus);
}

static void exitf(const char* msg, ...)
{
  int e = errno;
  va_list args;
  va_start(args, msg);
  vfprintf(stderr, msg, args);
  va_end(args);
  fprintf(stderr, " (errno %d)\n", e);
  doexit(kRetryStatus);
}

#define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1)

#define BITMASK_LEN_OFF(type, bf_off, bf_len)                                  \
  (type)(BITMASK_LEN(type, (bf_len)) << (bf_off))

#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                      \
  if ((bf_off) == 0 && (bf_len) == 0) {                                        \
    *(type*)(addr) = (type)(val);                                              \
  } else {                                                                     \
    type new_val = *(type*)(addr);                                             \
    new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len));                     \
    new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off);          \
    *(type*)(addr) = new_val;                                                  \
  }

struct csum_inet {
  uint32_t acc;
};

static void csum_inet_init(struct csum_inet* csum)
{
  csum->acc = 0;
}

static void csum_inet_update(struct csum_inet* csum, const uint8_t* data,
                             size_t length)
{
  if (length == 0)
    return;

  size_t i;
  for (i = 0; i < length - 1; i += 2)
    csum->acc += *(uint16_t*)&data[i];

  if (length & 1)
    csum->acc += (uint16_t)data[length - 1];

  while (csum->acc > 0xffff)
    csum->acc = (csum->acc & 0xffff) + (csum->acc >> 16);
}

static uint16_t csum_inet_digest(struct csum_inet* csum)
{
  return ~csum->acc;
}

static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* uctx)
{
  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);
  }
  doexit(sig);
}

static void install_segv_handler()
{
  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 uint64_t current_time_ms()
{
  struct timespec ts;

  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    fail("clock_gettime failed");
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void use_temporary_dir()
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    fail("failed to mkdtemp");
  if (chmod(tmpdir, 0777))
    fail("failed to chmod");
  if (chdir(tmpdir))
    fail("failed to chdir");
}

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[1024 / sizeof(void*)];
};

struct xt_counters {
  uint64_t pcnt, bcnt;
};

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[1024];
};

struct ipt_table_desc {
  const char* name;
  struct ipt_getinfo info;
  struct ipt_get_entries entries;
  struct ipt_replace replace;
  struct xt_counters counters[10];
};

static struct ipt_table_desc ipv4_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)

static void checkpoint_net_namespace(void)
{
  socklen_t optlen;
  unsigned i;
  int fd;

  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1)
    fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)");
  for (i = 0; i < sizeof(ipv4_tables) / sizeof(ipv4_tables[0]); i++) {
    struct ipt_table_desc* table = &ipv4_tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->entries.name, table->name);
    strcpy(table->replace.name, table->name);
    optlen = sizeof(table->info);
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      fail("getsockopt(IPT_SO_GET_INFO)");
    }
    if (table->info.size > sizeof(table->entries.entrytable))
      fail("table size is too large: %u", table->info.size);
    if (table->info.num_entries >
        sizeof(table->counters) / sizeof(table->counters[0]))
      fail("too many counters: %u", table->info.num_entries);
    table->entries.size = table->info.size;
    optlen = sizeof(table->entries) - sizeof(table->entries.entrytable) +
             table->info.size;
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_ENTRIES, &table->entries, &optlen))
      fail("getsockopt(IPT_SO_GET_ENTRIES)");
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.counters = table->counters;
    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, table->entries.entrytable,
           table->info.size);
  }
  close(fd);
}

static void reset_net_namespace(void)
{
  struct ipt_get_entries entries;
  struct ipt_getinfo info;
  socklen_t optlen;
  unsigned i;
  int fd;

  memset(&info, 0, sizeof(info));
  memset(&entries, 0, sizeof(entries));
  fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1)
    fail("socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)");
  for (i = 0; i < sizeof(ipv4_tables) / sizeof(ipv4_tables[0]); i++) {
    struct ipt_table_desc* table = &ipv4_tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    strcpy(info.name, table->name);
    optlen = sizeof(info);
    if (getsockopt(fd, SOL_IP, IPT_SO_GET_INFO, &info, &optlen))
      fail("getsockopt(IPT_SO_GET_INFO)");
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, SOL_IP, IPT_SO_GET_ENTRIES, &entries, &optlen))
        fail("getsockopt(IPT_SO_GET_ENTRIES)");
      if (memcmp(&table->entries, &entries, optlen) == 0)
        continue;
    }
    table->replace.num_counters = info.num_entries;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, SOL_IP, IPT_SO_SET_REPLACE, &table->replace, optlen))
      fail("setsockopt(IPT_SO_SET_REPLACE)");
  }
  close(fd);
}

static void remove_dir(const char* dir)
{
  DIR* dp;
  struct dirent* ep;
  int iter = 0;
retry:
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exitf("opendir(%s) failed due to NOFILE, exiting", dir);
    }
    exitf("opendir(%s) failed", dir);
  }
  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);
    struct stat st;
    if (lstat(filename, &st))
      exitf("lstat(%s) failed", filename);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exitf("unlink(%s) failed", filename);
      if (umount2(filename, MNT_DETACH))
        exitf("umount(%s) failed", filename);
    }
  }
  closedir(dp);
  int i;
  for (i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, MNT_DETACH))
          exitf("umount(%s) failed", dir);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exitf("rmdir(%s) failed", dir);
  }
}

static void test();

void loop()
{
  int iter;
  checkpoint_net_namespace();
  for (iter = 0;; iter++) {
    char cwdbuf[256];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      fail("failed to mkdir");
    int pid = fork();
    if (pid < 0)
      fail("loop fork failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      if (chdir(cwdbuf))
        fail("failed to chdir");
      test();
      doexit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      int res = waitpid(-1, &status, __WALL | WNOHANG);
      if (res == pid)
        break;
      usleep(1000);
      if (current_time_ms() - start > 5 * 1000) {
        kill(-pid, SIGKILL);
        kill(pid, SIGKILL);
        while (waitpid(-1, &status, __WALL) != pid) {
        }
        break;
      }
    }
    remove_dir(cwdbuf);
    reset_net_namespace();
  }
}

#ifndef __NR_sendmsg
#define __NR_sendmsg 370
#endif
#ifndef __NR_socket
#define __NR_socket 359
#endif
#ifndef __NR_bind
#define __NR_bind 361
#endif
#ifndef __NR_dup3
#define __NR_dup3 330
#endif
#ifndef __NR_sendto
#define __NR_sendto 369
#endif
#ifndef __NR_mmap
#define __NR_mmap 192
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 54
#endif
#undef __NR_mmap
#define __NR_mmap __NR_mmap2

long r[3];
void test()
{
  memset(r, -1, sizeof(r));
  syscall(__NR_mmap, 0x20000000, 0xfff000, 3, 0x32, -1, 0);
  NONFAILING(*(uint32_t*)0x202f0fec = 1);
  NONFAILING(*(uint32_t*)0x202f0ff0 = 2);
  NONFAILING(*(uint32_t*)0x202f0ff4 = 9);
  NONFAILING(*(uint32_t*)0x202f0ff8 = 3);
  NONFAILING(*(uint32_t*)0x202f0ffc = 4);
  syscall(__NR_ioctl, -1, 0xc0145401, 0x202f0fec);
  NONFAILING(*(uint32_t*)0x201f2fe4 = 0x209cf000);
  NONFAILING(*(uint32_t*)0x201f2fe8 = 0x58);
  NONFAILING(*(uint32_t*)0x201f2fec = 0x20000000);
  NONFAILING(*(uint32_t*)0x201f2ff0 = 1);
  NONFAILING(*(uint32_t*)0x201f2ff4 = 0x2020f000);
  NONFAILING(*(uint32_t*)0x201f2ff8 = 0xc);
  NONFAILING(*(uint32_t*)0x201f2ffc = 0);
  NONFAILING(*(uint16_t*)0x209cf000 = 0x27);
  NONFAILING(*(uint32_t*)0x209cf004 = 9);
  NONFAILING(*(uint32_t*)0x209cf008 = 8);
  NONFAILING(*(uint32_t*)0x209cf00c = 1);
  NONFAILING(*(uint8_t*)0x209cf010 = 0);
  NONFAILING(*(uint8_t*)0x209cf011 = 4);
  NONFAILING(memcpy((void*)0x209cf012,
                    "\xeb\xb0\x67\x13\x42\xe5\xd9\x53\xce\x5f\xc5\xf6\x6a\xbe"
                    "\x53\xb8\x56\x30\xc1\xfb\x4f\xf0\x0c\x1e\x62\x22\xa6\x96"
                    "\xa9\x78\xe7\x55\x3d\x90\x3b\x4f\xfa\xe6\x26\xdd\x31\x56"
                    "\xf0\x93\x1b\x6b\x6a\x61\x25\x18\x32\xb6\x5c\xfb\x63\x08"
                    "\x71\xab\xc4\x03\x2f\xb4\x39",
                    63));
  NONFAILING(*(uint32_t*)0x209cf054 = 7);
  NONFAILING(*(uint32_t*)0x20000000 = 0x20be2f3f);
  NONFAILING(*(uint32_t*)0x20000004 = 0xc1);
  NONFAILING(memcpy(
      (void*)0x20be2f3f,
      "\x21\xe0\x96\xd4\xfd\x3c\x22\x8e\x8f\x64\xb3\x5f\x80\x5d\xe2\x42\xc1\x9f"
      "\x6d\xe9\x3d\xac\x92\x2d\x28\x2b\x87\xde\xc2\x1e\xc2\x8a\x43\x4d\x91\x17"
      "\x17\x4f\x5c\xff\x5b\x7d\xa6\xae\x11\x3d\xf6\x19\x4a\x4d\x9e\x11\x30\xeb"
      "\x02\x54\xfa\x00\xa7\x3b\x5c\xc1\xae\x5f\xa6\x0b\x2f\x11\xae\xea\x9d\x8e"
      "\x04\x09\x68\x97\xc2\x1d\x04\x27\x26\x42\x31\x9e\xfb\xb9\xd5\xd8\x75\x2a"
      "\x9d\x9d\xb4\x41\xf2\x3d\x17\xc5\x0b\x09\x85\x4b\x2a\x8d\xc4\x15\x8c\x17"
      "\x23\x50\xd0\xad\x64\xad\xc4\x56\xbe\x65\x86\xc2\x6d\xf8\x46\xea\xb6\x20"
      "\xc2\xee\x9b\xd9\xe8\x28\x3d\x0a\x30\x8f\x27\xe4\x5c\x05\xd3\x0f\xcf\x71"
      "\xeb\x55\x09\x82\x52\x41\x98\x5e\x84\x45\x84\xc3\x1f\xa0\xb7\x7e\x59\x26"
      "\xd6\x09\x06\xa3\x37\xe2\x25\x0d\xb6\x45\x46\xc6\x7e\x1e\x34\xad\xfe\x74"
      "\xe0\xe9\xe9\x0f\x4a\x6b\x0f\x04\x22\xd4\xbd\x11\xb9",
      193));
  NONFAILING(*(uint32_t*)0x2020f000 = 0xc);
  NONFAILING(*(uint32_t*)0x2020f004 = 0);
  NONFAILING(*(uint32_t*)0x2020f008 = 9);
  syscall(__NR_sendmsg, -1, 0x201f2fe4, 0x40010);
  r[0] = syscall(__NR_socket, 0xa, 0x80002, 0x88);
  NONFAILING(*(uint16_t*)0x208a8000 = 0xa);
  NONFAILING(*(uint16_t*)0x208a8002 = htobe16(0x4e23));
  NONFAILING(*(uint32_t*)0x208a8004 = 0);
  NONFAILING(*(uint8_t*)0x208a8008 = 0);
  NONFAILING(*(uint8_t*)0x208a8009 = 0);
  NONFAILING(*(uint8_t*)0x208a800a = 0);
  NONFAILING(*(uint8_t*)0x208a800b = 0);
  NONFAILING(*(uint8_t*)0x208a800c = 0);
  NONFAILING(*(uint8_t*)0x208a800d = 0);
  NONFAILING(*(uint8_t*)0x208a800e = 0);
  NONFAILING(*(uint8_t*)0x208a800f = 0);
  NONFAILING(*(uint8_t*)0x208a8010 = 0);
  NONFAILING(*(uint8_t*)0x208a8011 = 0);
  NONFAILING(*(uint8_t*)0x208a8012 = 0);
  NONFAILING(*(uint8_t*)0x208a8013 = 0);
  NONFAILING(*(uint8_t*)0x208a8014 = 0);
  NONFAILING(*(uint8_t*)0x208a8015 = 0);
  NONFAILING(*(uint8_t*)0x208a8016 = 0);
  NONFAILING(*(uint8_t*)0x208a8017 = 0);
  NONFAILING(*(uint32_t*)0x208a8018 = 0);
  syscall(__NR_bind, r[0], 0x208a8000, 0x1c);
  r[1] = syscall(__NR_socket, 0xa, 0x802, 0);
  syscall(__NR_dup3, r[0], r[1], 0);
  NONFAILING(*(uint32_t*)0x20a29000 = 0x20685ff0);
  NONFAILING(*(uint32_t*)0x20a29004 = 0x10);
  NONFAILING(*(uint32_t*)0x20a29008 = 0x20fc5fc0);
  NONFAILING(*(uint32_t*)0x20a2900c = 0);
  NONFAILING(*(uint32_t*)0x20a29010 = 0x20000000);
  NONFAILING(*(uint32_t*)0x20a29014 = 0);
  NONFAILING(*(uint32_t*)0x20a29018 = 0);
  NONFAILING(*(uint16_t*)0x20685ff0 = 2);
  NONFAILING(*(uint16_t*)0x20685ff2 = htobe16(0x4e23));
  NONFAILING(*(uint32_t*)0x20685ff4 = htobe32(0));
  NONFAILING(*(uint8_t*)0x20685ff8 = 0);
  NONFAILING(*(uint8_t*)0x20685ff9 = 0);
  NONFAILING(*(uint8_t*)0x20685ffa = 0);
  NONFAILING(*(uint8_t*)0x20685ffb = 0);
  NONFAILING(*(uint8_t*)0x20685ffc = 0);
  NONFAILING(*(uint8_t*)0x20685ffd = 0);
  NONFAILING(*(uint8_t*)0x20685ffe = 0);
  NONFAILING(*(uint8_t*)0x20685fff = 0);
  syscall(__NR_sendmsg, r[1], 0x20a29000, 0x8000);
  NONFAILING(*(uint16_t*)0x200dcfe4 = 0xa);
  NONFAILING(*(uint16_t*)0x200dcfe6 = 0);
  NONFAILING(*(uint32_t*)0x200dcfe8 = 0);
  NONFAILING(*(uint8_t*)0x200dcfec = 0xfe);
  NONFAILING(*(uint8_t*)0x200dcfed = 0x80);
  NONFAILING(*(uint8_t*)0x200dcfee = 0);
  NONFAILING(*(uint8_t*)0x200dcfef = 0);
  NONFAILING(*(uint8_t*)0x200dcff0 = 0);
  NONFAILING(*(uint8_t*)0x200dcff1 = 0);
  NONFAILING(*(uint8_t*)0x200dcff2 = 0);
  NONFAILING(*(uint8_t*)0x200dcff3 = 0);
  NONFAILING(*(uint8_t*)0x200dcff4 = 0);
  NONFAILING(*(uint8_t*)0x200dcff5 = 0);
  NONFAILING(*(uint8_t*)0x200dcff6 = 0);
  NONFAILING(*(uint8_t*)0x200dcff7 = 0);
  NONFAILING(*(uint8_t*)0x200dcff8 = 0);
  NONFAILING(*(uint8_t*)0x200dcff9 = 0);
  NONFAILING(*(uint8_t*)0x200dcffa = 0);
  NONFAILING(*(uint8_t*)0x200dcffb = 0xbb);
  NONFAILING(*(uint32_t*)0x200dcffc = 0);
  syscall(__NR_sendto, r[1], 0x20ebcfa5, 0, 0, 0x200dcfe4, 0x1c);
  NONFAILING(*(uint8_t*)0x20178000 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178001 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178002 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178003 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178004 = 0);
  NONFAILING(*(uint8_t*)0x20178005 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178006 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178007 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178008 = 0xaa);
  NONFAILING(*(uint8_t*)0x20178009 = 0xaa);
  NONFAILING(*(uint8_t*)0x2017800a = 0);
  NONFAILING(*(uint8_t*)0x2017800b = 0xaa);
  NONFAILING(*(uint16_t*)0x2017800c = htobe16(0x800));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017800e, 5, 0, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017800e, 4, 4, 4));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017800f, 0, 0, 2));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017800f, 0, 2, 6));
  NONFAILING(*(uint16_t*)0x20178010 = htobe16(0x28));
  NONFAILING(*(uint16_t*)0x20178012 = 0);
  NONFAILING(*(uint16_t*)0x20178014 = htobe16(0));
  NONFAILING(*(uint8_t*)0x20178016 = 0);
  NONFAILING(*(uint8_t*)0x20178017 = 0x2c);
  NONFAILING(*(uint16_t*)0x20178018 = 0);
  NONFAILING(*(uint32_t*)0x2017801a = htobe32(0xe0000003));
  NONFAILING(*(uint32_t*)0x2017801e = htobe32(0xe0000002));
  NONFAILING(*(uint16_t*)0x20178022 = 0);
  NONFAILING(*(uint16_t*)0x20178024 = 0);
  NONFAILING(*(uint32_t*)0x20178026 = 0x42424242);
  NONFAILING(*(uint32_t*)0x2017802a = 0x42424242);
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017802e, 0, 0, 1));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017802e, 0, 1, 3));
  NONFAILING(STORE_BY_BITMASK(uint8_t, 0x2017802e, 5, 4, 4));
  NONFAILING(*(uint8_t*)0x2017802f = 0);
  NONFAILING(*(uint16_t*)0x20178030 = htobe16(0));
  NONFAILING(*(uint16_t*)0x20178032 = 0);
  NONFAILING(*(uint16_t*)0x20178034 = htobe16(0));
  NONFAILING(*(uint32_t*)0x202b2000 = 0);
  NONFAILING(*(uint32_t*)0x202b2004 = 1);
  NONFAILING(*(uint32_t*)0x202b2008 = 0);
  struct csum_inet csum_1;
  csum_inet_init(&csum_1);
  NONFAILING(csum_inet_update(&csum_1, (const uint8_t*)0x2017801a, 4));
  NONFAILING(csum_inet_update(&csum_1, (const uint8_t*)0x2017801e, 4));
  uint16_t csum_1_chunk_2 = 0x600;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_2, 2);
  uint16_t csum_1_chunk_3 = 0x1400;
  csum_inet_update(&csum_1, (const uint8_t*)&csum_1_chunk_3, 2);
  NONFAILING(csum_inet_update(&csum_1, (const uint8_t*)0x20178022, 20));
  NONFAILING(*(uint16_t*)0x20178032 = csum_inet_digest(&csum_1));
  struct csum_inet csum_2;
  csum_inet_init(&csum_2);
  NONFAILING(csum_inet_update(&csum_2, (const uint8_t*)0x2017800e, 20));
  NONFAILING(*(uint16_t*)0x20178018 = csum_inet_digest(&csum_2));
  r[2] = syscall(__NR_socket, 0xf, 3, 2);
  NONFAILING(*(uint32_t*)0x20cd0fc8 = 0);
  NONFAILING(*(uint32_t*)0x20cd0fcc = 0);
  NONFAILING(*(uint32_t*)0x20cd0fd0 = 0x20858ff0);
  NONFAILING(*(uint32_t*)0x20cd0fd4 = 1);
  NONFAILING(*(uint32_t*)0x20cd0fd8 = 0);
  NONFAILING(*(uint32_t*)0x20cd0fdc = 0);
  NONFAILING(*(uint32_t*)0x20cd0fe0 = 0);
  NONFAILING(*(uint32_t*)0x20858ff0 = 0x20e05000);
  NONFAILING(*(uint32_t*)0x20858ff4 = 0xc0);
  NONFAILING(*(uint8_t*)0x20e05000 = 2);
  NONFAILING(*(uint8_t*)0x20e05001 = 0xd);
  NONFAILING(*(uint8_t*)0x20e05002 = 0);
  NONFAILING(*(uint8_t*)0x20e05003 = 0);
  NONFAILING(*(uint16_t*)0x20e05004 = 0x18);
  NONFAILING(*(uint16_t*)0x20e05006 = 0);
  NONFAILING(*(uint32_t*)0x20e05008 = 0);
  NONFAILING(*(uint32_t*)0x20e0500c = 0);
  NONFAILING(*(uint16_t*)0x20e05010 = 4);
  NONFAILING(*(uint16_t*)0x20e05012 = 3);
  NONFAILING(*(uint32_t*)0x20e05014 = 0x28000000);
  NONFAILING(*(uint64_t*)0x20e05018 = 0);
  NONFAILING(*(uint64_t*)0x20e05020 = 0);
  NONFAILING(*(uint64_t*)0x20e05028 = 0);
  NONFAILING(*(uint16_t*)0x20e05030 = 8);
  NONFAILING(*(uint16_t*)0x20e05032 = 0x12);
  NONFAILING(*(uint16_t*)0x20e05034 = 0);
  NONFAILING(*(uint8_t*)0x20e05036 = 1);
  NONFAILING(*(uint8_t*)0x20e05037 = 0);
  NONFAILING(*(uint32_t*)0x20e05038 = 0);
  NONFAILING(*(uint32_t*)0x20e0503c = 0);
  NONFAILING(*(uint16_t*)0x20e05040 = 6);
  NONFAILING(*(uint16_t*)0x20e05042 = 0);
  NONFAILING(*(uint8_t*)0x20e05044 = 0);
  NONFAILING(*(uint8_t*)0x20e05045 = 0);
  NONFAILING(*(uint16_t*)0x20e05046 = 0);
  NONFAILING(*(uint32_t*)0x20e05048 = 0);
  NONFAILING(*(uint32_t*)0x20e0504c = 0);
  NONFAILING(*(uint8_t*)0x20e05050 = 0xac);
  NONFAILING(*(uint8_t*)0x20e05051 = 0x14);
  NONFAILING(*(uint8_t*)0x20e05052 = 0);
  NONFAILING(*(uint8_t*)0x20e05053 = 0xaa);
  NONFAILING(*(uint8_t*)0x20e05060 = -1);
  NONFAILING(*(uint8_t*)0x20e05061 = 2);
  NONFAILING(*(uint8_t*)0x20e05062 = 0);
  NONFAILING(*(uint8_t*)0x20e05063 = 0);
  NONFAILING(*(uint8_t*)0x20e05064 = 0);
  NONFAILING(*(uint8_t*)0x20e05065 = 0);
  NONFAILING(*(uint8_t*)0x20e05066 = 0);
  NONFAILING(*(uint8_t*)0x20e05067 = 0);
  NONFAILING(*(uint8_t*)0x20e05068 = 0);
  NONFAILING(*(uint8_t*)0x20e05069 = 0);
  NONFAILING(*(uint8_t*)0x20e0506a = 0);
  NONFAILING(*(uint8_t*)0x20e0506b = 0);
  NONFAILING(*(uint8_t*)0x20e0506c = 0);
  NONFAILING(*(uint8_t*)0x20e0506d = 0);
  NONFAILING(*(uint8_t*)0x20e0506e = 0);
  NONFAILING(*(uint8_t*)0x20e0506f = 1);
  NONFAILING(*(uint16_t*)0x20e05070 = 5);
  NONFAILING(*(uint16_t*)0x20e05072 = 5);
  NONFAILING(*(uint8_t*)0x20e05074 = 0);
  NONFAILING(*(uint8_t*)0x20e05075 = 0);
  NONFAILING(*(uint16_t*)0x20e05076 = 0);
  NONFAILING(*(uint16_t*)0x20e05078 = 0xa);
  NONFAILING(*(uint16_t*)0x20e0507a = 0);
  NONFAILING(*(uint32_t*)0x20e0507c = 0);
  NONFAILING(*(uint8_t*)0x20e05080 = 0);
  NONFAILING(*(uint8_t*)0x20e05081 = 0);
  NONFAILING(*(uint8_t*)0x20e05082 = 0);
  NONFAILING(*(uint8_t*)0x20e05083 = 0);
  NONFAILING(*(uint8_t*)0x20e05084 = 0);
  NONFAILING(*(uint8_t*)0x20e05085 = 0);
  NONFAILING(*(uint8_t*)0x20e05086 = 0);
  NONFAILING(*(uint8_t*)0x20e05087 = 0);
  NONFAILING(*(uint8_t*)0x20e05088 = 0);
  NONFAILING(*(uint8_t*)0x20e05089 = 0);
  NONFAILING(*(uint8_t*)0x20e0508a = -1);
  NONFAILING(*(uint8_t*)0x20e0508b = -1);
  NONFAILING(*(uint8_t*)0x20e0508c = 0xac);
  NONFAILING(*(uint8_t*)0x20e0508d = 0x14);
  NONFAILING(*(uint8_t*)0x20e0508e = 0);
  NONFAILING(*(uint8_t*)0x20e0508f = 0);
  NONFAILING(*(uint32_t*)0x20e05090 = 0);
  NONFAILING(*(uint16_t*)0x20e05098 = 5);
  NONFAILING(*(uint16_t*)0x20e0509a = 6);
  NONFAILING(*(uint8_t*)0x20e0509c = 0);
  NONFAILING(*(uint8_t*)0x20e0509d = 0);
  NONFAILING(*(uint16_t*)0x20e0509e = 0);
  NONFAILING(*(uint16_t*)0x20e050a0 = 0xa);
  NONFAILING(*(uint16_t*)0x20e050a2 = 0);
  NONFAILING(*(uint32_t*)0x20e050a4 = 0);
  NONFAILING(*(uint8_t*)0x20e050a8 = 0xfe);
  NONFAILING(*(uint8_t*)0x20e050a9 = 0x80);
  NONFAILING(*(uint8_t*)0x20e050aa = 0);
  NONFAILING(*(uint8_t*)0x20e050ab = 0);
  NONFAILING(*(uint8_t*)0x20e050ac = 0);
  NONFAILING(*(uint8_t*)0x20e050ad = 0);
  NONFAILING(*(uint8_t*)0x20e050ae = 0);
  NONFAILING(*(uint8_t*)0x20e050af = 0);
  NONFAILING(*(uint8_t*)0x20e050b0 = 0);
  NONFAILING(*(uint8_t*)0x20e050b1 = 0);
  NONFAILING(*(uint8_t*)0x20e050b2 = 0);
  NONFAILING(*(uint8_t*)0x20e050b3 = 0);
  NONFAILING(*(uint8_t*)0x20e050b4 = 0);
  NONFAILING(*(uint8_t*)0x20e050b5 = 0);
  NONFAILING(*(uint8_t*)0x20e050b6 = 0);
  NONFAILING(*(uint8_t*)0x20e050b7 = 0xbb);
  NONFAILING(*(uint32_t*)0x20e050b8 = 0);
  syscall(__NR_sendmsg, r[2], 0x20cd0fc8, 0);
}

int main()
{
  install_segv_handler();
  char* cwd = get_current_dir_name();
  for (;;) {
    if (chdir(cwd))
      fail("failed to chdir");
    use_temporary_dir();
    loop();
  }
}