// https://syzkaller.appspot.com/bug?id=e29a906a2add60922b26408a877262e67c2af944
// autogenerated by syzkaller (http://github.com/google/syzkaller)

#define _GNU_SOURCE
#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <errno.h>
#include <errno.h>
#include <errno.h>
#include <fcntl.h>
#include <fcntl.h>
#include <linux/futex.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_tun.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <net/if_arp.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <signal.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.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;                                                  \
  }

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");
}

static void vsnprintf_check(char* str, size_t size, const char* format,
                            va_list args)
{
  int rv;

  rv = vsnprintf(str, size, format, args);
  if (rv < 0)
    fail("tun: snprintf failed");
  if ((size_t)rv >= size)
    fail("tun: string '%s...' doesn't fit into buffer", str);
}

#define COMMAND_MAX_LEN 128
#define PATH_PREFIX                                                            \
  "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin "
#define PATH_PREFIX_LEN (sizeof(PATH_PREFIX) - 1)

static void execute_command(bool panic, const char* format, ...)
{
  va_list args;
  char command[PATH_PREFIX_LEN + COMMAND_MAX_LEN];
  int rv;

  va_start(args, format);
  memcpy(command, PATH_PREFIX, PATH_PREFIX_LEN);
  vsnprintf_check(command + PATH_PREFIX_LEN, COMMAND_MAX_LEN, format, args);
  va_end(args);
  rv = system(command);
  if (rv) {
    if (panic)
      fail("command '%s' failed: %d", &command[0], rv);
  }
}

static int tunfd = -1;
static int tun_frags_enabled;

#define SYZ_TUN_MAX_PACKET_SIZE 1000

#define TUN_IFACE "syz_tun"

#define LOCAL_MAC "aa:aa:aa:aa:aa:aa"
#define REMOTE_MAC "aa:aa:aa:aa:aa:bb"

#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 = 252;
  if (dup2(tunfd, kTunFd) < 0)
    fail("dup2(tunfd, kTunFd) failed");
  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)
      fail("tun: ioctl(TUNSETIFF) failed");
  }
  if (ioctl(tunfd, TUNGETIFF, (void*)&ifr) < 0)
    fail("tun: ioctl(TUNGETIFF) failed");
  tun_frags_enabled = (ifr.ifr_flags & IFF_NAPI_FRAGS) != 0;

  execute_command(0, "sysctl -w net.ipv6.conf.%s.accept_dad=0", TUN_IFACE);

  execute_command(0, "sysctl -w net.ipv6.conf.%s.router_solicitations=0",
                  TUN_IFACE);

  execute_command(1, "ip link set dev %s address %s", TUN_IFACE, LOCAL_MAC);
  execute_command(1, "ip addr add %s/24 dev %s", LOCAL_IPV4, TUN_IFACE);
  execute_command(1, "ip neigh add %s lladdr %s dev %s nud permanent",
                  REMOTE_IPV4, REMOTE_MAC, TUN_IFACE);
  execute_command(0, "ip -6 addr add %s/120 dev %s", LOCAL_IPV6, TUN_IFACE);
  execute_command(0, "ip -6 neigh add %s lladdr %s dev %s nud permanent",
                  REMOTE_IPV6, REMOTE_MAC, TUN_IFACE);
  execute_command(1, "ip link set dev %s up", TUN_IFACE);
}

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;
    fail("tun: read failed with %d", rv);
  }
  return rv;
}

static void flush_tun()
{
  char data[SYZ_TUN_MAX_PACKET_SIZE];
  while (read_tun(&data[0], sizeof(data)) != -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 void setup_cgroups()
{
  if (mkdir("/syzcgroup", 0777)) {
  }
  if (mkdir("/syzcgroup/unified", 0777)) {
  }
  if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) {
  }
  if (chmod("/syzcgroup/unified", 0777)) {
  }
  if (!write_file("/syzcgroup/unified/cgroup.subtree_control",
                  "+cpu +memory +io +pids +rdma")) {
  }
  if (mkdir("/syzcgroup/cpu", 0777)) {
  }
  if (mount("none", "/syzcgroup/cpu", "cgroup", 0,
            "cpuset,cpuacct,perf_event,hugetlb")) {
  }
  if (!write_file("/syzcgroup/cpu/cgroup.clone_children", "1")) {
  }
  if (chmod("/syzcgroup/cpu", 0777)) {
  }
  if (mkdir("/syzcgroup/net", 0777)) {
  }
  if (mount("none", "/syzcgroup/net", "cgroup", 0,
            "net_cls,net_prio,devices,freezer")) {
  }
  if (chmod("/syzcgroup/net", 0777)) {
  }
}

static void setup_binfmt_misc()
{
  if (!write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz0:M:0:syz0::./file0:")) {
  }
  if (!write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz1:M:1:yz1::./file0:POC")) {
  }
}

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 = 160 << 20;
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 8 << 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);

  if (unshare(CLONE_NEWNS)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
}

int wait_for_loop(int pid)
{
  if (pid < 0)
    fail("sandbox fork failed");
  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_cgroups();
  setup_binfmt_misc();
  sandbox_common();
  if (unshare(CLONE_NEWNET)) {
  }
  initialize_tun();
  loop();
  doexit(1);
}

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) {
      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);
    while (umount2(filename, MNT_DETACH) == 0) {
    }
    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 execute_one();
extern unsigned long long procid;

static void loop()
{
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  char cgroupdir_cpu[64];
  snprintf(cgroupdir_cpu, sizeof(cgroupdir_cpu), "/syzcgroup/cpu/syz%llu",
           procid);
  char cgroupdir_net[64];
  snprintf(cgroupdir_net, sizeof(cgroupdir_net), "/syzcgroup/net/syz%llu",
           procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  if (mkdir(cgroupdir_cpu, 0777)) {
  }
  if (mkdir(cgroupdir_net, 0777)) {
  }
  int pid = getpid();
  char procs_file[128];
  snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir);
  if (!write_file(procs_file, "%d", pid)) {
  }
  snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir_cpu);
  if (!write_file(procs_file, "%d", pid)) {
  }
  snprintf(procs_file, sizeof(procs_file), "%s/cgroup.procs", cgroupdir_net);
  if (!write_file(procs_file, "%d", pid)) {
  }
  int iter;
  for (iter = 0;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      fail("failed to mkdir");
    int pid = fork();
    if (pid < 0)
      fail("clone failed");
    if (pid == 0) {
      prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
      setpgrp();
      if (chdir(cwdbuf))
        fail("failed to chdir");
      if (symlink(cgroupdir, "./cgroup")) {
      }
      if (symlink(cgroupdir_cpu, "./cgroup.cpu")) {
      }
      if (symlink(cgroupdir_net, "./cgroup.net")) {
      }
      flush_tun();
      execute_one();
      int fd;
      for (fd = 3; fd < 30; fd++)
        close(fd);
      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)
        continue;
      kill(-pid, SIGKILL);
      kill(pid, SIGKILL);
      while (waitpid(-1, &status, __WALL) != pid) {
      }
      break;
    }
    remove_dir(cwdbuf);
  }
}

struct thread_t {
  int created, running, call;
  pthread_t th;
};

static struct thread_t threads[16];
static void execute_call(int call);
static int running;
static int collide;

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    while (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE))
      syscall(SYS_futex, &th->running, FUTEX_WAIT, 0, 0);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    __atomic_store_n(&th->running, 0, __ATOMIC_RELEASE);
    syscall(SYS_futex, &th->running, FUTEX_WAKE);
  }
  return 0;
}

static void execute(int num_calls)
{
  int call, thread;
  running = 0;
  for (call = 0; call < num_calls; call++) {
    for (thread = 0; thread < sizeof(threads) / sizeof(threads[0]); thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        pthread_attr_t attr;
        pthread_attr_init(&attr);
        pthread_attr_setstacksize(&attr, 128 << 10);
        pthread_create(&th->th, &attr, thr, th);
      }
      if (!__atomic_load_n(&th->running, __ATOMIC_ACQUIRE)) {
        th->call = call;
        __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        __atomic_store_n(&th->running, 1, __ATOMIC_RELEASE);
        syscall(SYS_futex, &th->running, FUTEX_WAKE);
        if (collide && call % 2)
          break;
        struct timespec ts;
        ts.tv_sec = 0;
        ts.tv_nsec = 20 * 1000 * 1000;
        syscall(SYS_futex, &th->running, FUTEX_WAIT, 1, &ts);
        if (__atomic_load_n(&running, __ATOMIC_RELAXED))
          usleep((call == num_calls - 1) ? 10000 : 1000);
        break;
      }
    }
  }
}

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

uint64_t r[3] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff};
unsigned long long procid;
void execute_call(int call)
{
  long res;
  switch (call) {
  case 0:
    NONFAILING(*(uint32_t*)0x20000200 = 2);
    NONFAILING(*(uint32_t*)0x20000204 = 0x70);
    NONFAILING(*(uint8_t*)0x20000208 = 0xe6);
    NONFAILING(*(uint8_t*)0x20000209 = 0);
    NONFAILING(*(uint8_t*)0x2000020a = 0);
    NONFAILING(*(uint8_t*)0x2000020b = 0);
    NONFAILING(*(uint32_t*)0x2000020c = 0);
    NONFAILING(*(uint64_t*)0x20000210 = 0);
    NONFAILING(*(uint64_t*)0x20000218 = 0);
    NONFAILING(*(uint64_t*)0x20000220 = 0);
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 0, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 1, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 2, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 3, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 4, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 5, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 6, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 7, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 8, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 9, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 10, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 11, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 12, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 13, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 14, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 15, 2));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 17, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 18, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 19, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 20, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 21, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 22, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 23, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 24, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 25, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 26, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 27, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 28, 1));
    NONFAILING(STORE_BY_BITMASK(uint64_t, 0x20000228, 0, 29, 35));
    NONFAILING(*(uint32_t*)0x20000230 = 0);
    NONFAILING(*(uint32_t*)0x20000234 = 0);
    NONFAILING(*(uint64_t*)0x20000238 = 0);
    NONFAILING(*(uint64_t*)0x20000240 = 0);
    NONFAILING(*(uint64_t*)0x20000248 = 0);
    NONFAILING(*(uint64_t*)0x20000250 = 0);
    NONFAILING(*(uint32_t*)0x20000258 = 0);
    NONFAILING(*(uint32_t*)0x2000025c = 0);
    NONFAILING(*(uint64_t*)0x20000260 = 0);
    NONFAILING(*(uint32_t*)0x20000268 = 0);
    NONFAILING(*(uint16_t*)0x2000026c = 0);
    NONFAILING(*(uint16_t*)0x2000026e = 0);
    syscall(__NR_perf_event_open, 0x20000200, 0, 0, -1, 0);
    break;
  case 1:
    NONFAILING(*(uint32_t*)0x20000a40 = -1);
    syscall(__NR_setsockopt, -1, 0x29, 0x24, 0x20000a40, 0x173);
    break;
  case 2:
    res = syscall(__NR_socketpair, 0, 0, 0, 0x20000140);
    if (res != -1)
      NONFAILING(r[0] = *(uint32_t*)0x20000140);
    break;
  case 3:
    syscall(__NR_socket, 0xa, 1, 0);
    break;
  case 4:
    NONFAILING(*(uint64_t*)0x20002880 = 0x200021c0);
    NONFAILING(*(uint32_t*)0x20002888 = 0x80);
    NONFAILING(*(uint64_t*)0x20002890 = 0x20002700);
    NONFAILING(*(uint64_t*)0x20002700 = 0x20002240);
    NONFAILING(*(uint64_t*)0x20002708 = 0xe2);
    NONFAILING(*(uint64_t*)0x20002710 = 0x20002340);
    NONFAILING(*(uint64_t*)0x20002718 = 0x47);
    NONFAILING(*(uint64_t*)0x20002720 = 0x200023c0);
    NONFAILING(*(uint64_t*)0x20002728 = 0x5b);
    NONFAILING(*(uint64_t*)0x20002730 = 0x20002440);
    NONFAILING(*(uint64_t*)0x20002738 = 0xf7);
    NONFAILING(*(uint64_t*)0x20002740 = 0x20002540);
    NONFAILING(*(uint64_t*)0x20002748 = 0x4f);
    NONFAILING(*(uint64_t*)0x20002750 = 0x200025c0);
    NONFAILING(*(uint64_t*)0x20002758 = 0x35);
    NONFAILING(*(uint64_t*)0x20002760 = 0x20002600);
    NONFAILING(*(uint64_t*)0x20002768 = 0xec);
    NONFAILING(*(uint64_t*)0x20002898 = 7);
    NONFAILING(*(uint64_t*)0x200028a0 = 0x20002780);
    NONFAILING(*(uint64_t*)0x200028a8 = 0xf6);
    NONFAILING(*(uint32_t*)0x200028b0 = 0x20);
    res = syscall(__NR_recvmsg, r[0], 0x20002880, 0x10060);
    if (res != -1)
      NONFAILING(r[1] = *(uint32_t*)0x200021c4);
    break;
  case 5:
    NONFAILING(*(uint32_t*)0x200028c0 = 0);
    NONFAILING(*(uint32_t*)0x200028c4 = 6);
    NONFAILING(*(uint64_t*)0x200028c8 = 0x20000040);
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000040, 5, 0, 3));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000040, 8, 3, 1));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000040, 0xf, 4, 4));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000041, 0, 0, 4));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000041, 0xa, 4, 4));
    NONFAILING(*(uint16_t*)0x20000042 = 0xfffd);
    NONFAILING(*(uint32_t*)0x20000044 = 0xfffffffc);
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000050, 5, 0, 3));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000050, 8, 3, 1));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000050, 0xd, 4, 4));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000051, 0, 0, 4));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000051, 0xa, 4, 4));
    NONFAILING(*(uint16_t*)0x20000052 = 0xfffc);
    NONFAILING(*(uint32_t*)0x20000054 = 0xfffffffc);
    NONFAILING(*(uint8_t*)0x20000060 = 0x18);
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000061, 3, 0, 4));
    NONFAILING(STORE_BY_BITMASK(uint8_t, 0x20000061, 1, 4, 4));
    NONFAILING(*(uint16_t*)0x20000062 = 0);
    NONFAILING(*(uint32_t*)0x20000064 = r[0]);
    NONFAILING(*(uint8_t*)0x20000068 = 0);
    NONFAILING(*(uint8_t*)0x20000069 = 0);
    NONFAILING(*(uint16_t*)0x2000006a = 0);
    NONFAILING(*(uint32_t*)0x2000006c = 0);
    NONFAILING(*(uint64_t*)0x200028d0 = 0x20000080);
    NONFAILING(memcpy((void*)0x20000080, "syzkaller", 10));
    NONFAILING(*(uint32_t*)0x200028d8 = 0x800);
    NONFAILING(*(uint32_t*)0x200028dc = 0xef);
    NONFAILING(*(uint64_t*)0x200028e0 = 0x200002c0);
    NONFAILING(*(uint32_t*)0x200028e8 = 0x41000);
    NONFAILING(*(uint32_t*)0x200028ec = 0);
    NONFAILING(*(uint8_t*)0x200028f0 = 0);
    NONFAILING(*(uint8_t*)0x200028f1 = 0);
    NONFAILING(*(uint8_t*)0x200028f2 = 0);
    NONFAILING(*(uint8_t*)0x200028f3 = 0);
    NONFAILING(*(uint8_t*)0x200028f4 = 0);
    NONFAILING(*(uint8_t*)0x200028f5 = 0);
    NONFAILING(*(uint8_t*)0x200028f6 = 0);
    NONFAILING(*(uint8_t*)0x200028f7 = 0);
    NONFAILING(*(uint8_t*)0x200028f8 = 0);
    NONFAILING(*(uint8_t*)0x200028f9 = 0);
    NONFAILING(*(uint8_t*)0x200028fa = 0);
    NONFAILING(*(uint8_t*)0x200028fb = 0);
    NONFAILING(*(uint8_t*)0x200028fc = 0);
    NONFAILING(*(uint8_t*)0x200028fd = 0);
    NONFAILING(*(uint8_t*)0x200028fe = 0);
    NONFAILING(*(uint8_t*)0x200028ff = 0);
    NONFAILING(*(uint32_t*)0x20002900 = r[1]);
    NONFAILING(*(uint32_t*)0x20002904 = 0xf);
    syscall(__NR_bpf, 5, 0x200028c0, 0x48);
    break;
  case 6:
    NONFAILING(*(uint32_t*)0x20000280 = 0x12);
    NONFAILING(*(uint32_t*)0x20000284 = 9);
    NONFAILING(*(uint32_t*)0x20000288 = 4);
    NONFAILING(*(uint32_t*)0x2000028c = 1);
    NONFAILING(*(uint32_t*)0x20000290 = 0);
    NONFAILING(*(uint32_t*)0x20000294 = -1);
    NONFAILING(*(uint32_t*)0x20000298 = 0);
    NONFAILING(*(uint8_t*)0x2000029c = 0);
    NONFAILING(*(uint8_t*)0x2000029d = 0);
    NONFAILING(*(uint8_t*)0x2000029e = 0);
    NONFAILING(*(uint8_t*)0x2000029f = 0);
    NONFAILING(*(uint8_t*)0x200002a0 = 0);
    NONFAILING(*(uint8_t*)0x200002a1 = 0);
    NONFAILING(*(uint8_t*)0x200002a2 = 0);
    NONFAILING(*(uint8_t*)0x200002a3 = 0);
    NONFAILING(*(uint8_t*)0x200002a4 = 0);
    NONFAILING(*(uint8_t*)0x200002a5 = 0);
    NONFAILING(*(uint8_t*)0x200002a6 = 0);
    NONFAILING(*(uint8_t*)0x200002a7 = 0);
    NONFAILING(*(uint8_t*)0x200002a8 = 0);
    NONFAILING(*(uint8_t*)0x200002a9 = 0);
    NONFAILING(*(uint8_t*)0x200002aa = 0);
    NONFAILING(*(uint8_t*)0x200002ab = 0);
    res = syscall(__NR_bpf, 0, 0x20000280, 0x34d);
    if (res != -1)
      r[2] = res;
    break;
  case 7:
    NONFAILING(*(uint32_t*)0x20000000 = 0);
    NONFAILING(*(uint32_t*)0x20000004 = 0);
    NONFAILING(*(uint32_t*)0x20000008 = 4);
    NONFAILING(*(uint32_t*)0x2000000c = 0);
    NONFAILING(*(uint32_t*)0x20000010 = 0);
    NONFAILING(*(uint32_t*)0x20000014 = -1);
    NONFAILING(*(uint32_t*)0x20000018 = 0);
    NONFAILING(*(uint8_t*)0x2000001c = 0);
    NONFAILING(*(uint8_t*)0x2000001d = 0);
    NONFAILING(*(uint8_t*)0x2000001e = 0);
    NONFAILING(*(uint8_t*)0x2000001f = 0);
    NONFAILING(*(uint8_t*)0x20000020 = 0);
    NONFAILING(*(uint8_t*)0x20000021 = 0);
    NONFAILING(*(uint8_t*)0x20000022 = 0);
    NONFAILING(*(uint8_t*)0x20000023 = 0);
    NONFAILING(*(uint8_t*)0x20000024 = 0);
    NONFAILING(*(uint8_t*)0x20000025 = 0);
    NONFAILING(*(uint8_t*)0x20000026 = 0);
    NONFAILING(*(uint8_t*)0x20000027 = 0);
    NONFAILING(*(uint8_t*)0x20000028 = 0);
    NONFAILING(*(uint8_t*)0x20000029 = 0);
    NONFAILING(*(uint8_t*)0x2000002a = 0);
    NONFAILING(*(uint8_t*)0x2000002b = 0);
    syscall(__NR_bpf, 0, 0x20000000, 0xce);
    break;
  case 8:
    NONFAILING(*(uint32_t*)0x200001c0 = r[0]);
    NONFAILING(*(uint64_t*)0x200001c8 = 0x200000c0);
    NONFAILING(memcpy((void*)0x200000c0, "\x8d\x44\xa9\x9d\x44\xaf\x67\xc7\xc1"
                                         "\x0d\x87\x1d\x45\xab\x43\xfe\xce\xb0"
                                         "\x85\x6d\x21\x7f\xf1\x38\x76\xdc\xe1"
                                         "\xc3\x06\x41\x82\x96\x58",
                      33));
    NONFAILING(*(uint64_t*)0x200001d0 = 0x20000100);
    NONFAILING(memcpy((void*)0x20000100, "\xcf\x00\x69\xbf\x5f\x18\x79\x3b\x49"
                                         "\x59\x7a\x5d\xe7\x95\xaf\xad\x8d\x34"
                                         "\xe4\xa3\xf0\x8a\x64\xbb\xd6\xf6\x0d"
                                         "\x40\xc9\x3d\x58\xf9\xea\x6d\xcf\x65"
                                         "\x52\xce\x74\x64\xe8\xc7\xa8\xb7",
                      44));
    NONFAILING(*(uint64_t*)0x200001d8 = 2);
    syscall(__NR_bpf, 2, 0x200001c0, 0x20);
    break;
  case 9:
    NONFAILING(*(uint32_t*)0x20000180 = r[2]);
    NONFAILING(*(uint64_t*)0x20000188 = 0x20000000);
    NONFAILING(*(uint64_t*)0x20000190 = 0x20000140);
    NONFAILING(*(uint64_t*)0x20000198 = 0);
    syscall(__NR_bpf, 2, 0x20000180, 0x20);
    break;
  case 10:
    NONFAILING(*(uint32_t*)0x20000180 = r[2]);
    NONFAILING(*(uint64_t*)0x20000188 = 0x20000080);
    NONFAILING(*(uint64_t*)0x20000190 = 0x20000140);
    NONFAILING(*(uint64_t*)0x20000198 = 0);
    syscall(__NR_bpf, 2, 0x20000180, 0x20);
    break;
  }
}

void execute_one()
{
  execute(11);
  collide = 1;
  execute(11);
}

int main()
{
  syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0);
  install_segv_handler();
  char* cwd = get_current_dir_name();
  for (;;) {
    if (chdir(cwd))
      fail("failed to chdir");
    use_temporary_dir();
    do_sandbox_none();
  }
}