// https://syzkaller.appspot.com/bug?id=1eaa553d8a82de59255e3a9574d193885c6dadd4
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.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 <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/wait.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/genetlink.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>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

#define BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off))
#define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len)               \
  *(type*)(addr) =                                                             \
      htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) |           \
            (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len))))

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

struct nlmsg {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[4096];
};

static void netlink_init(struct nlmsg* nlmsg, int typ, int flags,
                         const void* data, int size)
{
  memset(nlmsg, 0, sizeof(*nlmsg));
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_type = typ;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags;
  memcpy(hdr + 1, data, size);
  nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size);
}

static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data,
                         int size)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_len = sizeof(*attr) + size;
  attr->nla_type = typ;
  if (size > 0)
    memcpy(attr + 1, data, size);
  nlmsg->pos += NLMSG_ALIGN(attr->nla_len);
}

static int netlink_send_ext(struct nlmsg* nlmsg, int sock, uint16_t reply_type,
                            int* reply_len, bool dofail)
{
  if (nlmsg->pos > nlmsg->buf + sizeof(nlmsg->buf) || nlmsg->nesting)
    exit(1);
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_len = nlmsg->pos - nlmsg->buf;
  struct sockaddr_nl addr;
  memset(&addr, 0, sizeof(addr));
  addr.nl_family = AF_NETLINK;
  ssize_t n = sendto(sock, nlmsg->buf, hdr->nlmsg_len, 0,
                     (struct sockaddr*)&addr, sizeof(addr));
  if (n != (ssize_t)hdr->nlmsg_len) {
    if (dofail)
      exit(1);
    return -1;
  }
  n = recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  if (reply_len)
    *reply_len = 0;
  if (n < 0) {
    if (dofail)
      exit(1);
    return -1;
  }
  if (n < (ssize_t)sizeof(struct nlmsghdr)) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type == NLMSG_DONE)
    return 0;
  if (reply_len && hdr->nlmsg_type == reply_type) {
    *reply_len = n;
    return 0;
  }
  if (n < (ssize_t)(sizeof(struct nlmsghdr) + sizeof(struct nlmsgerr))) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  if (hdr->nlmsg_type != NLMSG_ERROR) {
    errno = EINVAL;
    if (dofail)
      exit(1);
    return -1;
  }
  errno = -((struct nlmsgerr*)(hdr + 1))->error;
  return -errno;
}

static int netlink_send(struct nlmsg* nlmsg, int sock)
{
  return netlink_send_ext(nlmsg, sock, 0, NULL, true);
}

static int netlink_query_family_id(struct nlmsg* nlmsg, int sock,
                                   const char* family_name, bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = CTRL_CMD_GETFAMILY;
  netlink_init(nlmsg, GENL_ID_CTRL, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, CTRL_ATTR_FAMILY_NAME, family_name,
               strnlen(family_name, GENL_NAMSIZ - 1) + 1);
  int n = 0;
  int err = netlink_send_ext(nlmsg, sock, GENL_ID_CTRL, &n, dofail);
  if (err < 0) {
    return -1;
  }
  uint16_t id = 0;
  struct nlattr* attr = (struct nlattr*)(nlmsg->buf + NLMSG_HDRLEN +
                                         NLMSG_ALIGN(sizeof(genlhdr)));
  for (; (char*)attr < nlmsg->buf + n;
       attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
    if (attr->nla_type == CTRL_ATTR_FAMILY_ID) {
      id = *(uint16_t*)(attr + 1);
      break;
    }
  }
  if (!id) {
    errno = EINVAL;
    return -1;
  }
  recv(sock, nlmsg->buf, sizeof(nlmsg->buf), 0);
  return id;
}

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

static int netlink_add_addr(struct nlmsg* nlmsg, 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(nlmsg, RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, IFA_LOCAL, addr, addrsize);
  netlink_attr(nlmsg, IFA_ADDRESS, addr, addrsize);
  return netlink_send(nlmsg, sock);
}

static void netlink_add_addr4(struct nlmsg* nlmsg, 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(nlmsg, sock, dev, &in_addr, sizeof(in_addr));
  if (err < 0) {
  }
}

static void netlink_add_addr6(struct nlmsg* nlmsg, 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(nlmsg, sock, dev, &in6_addr, sizeof(in6_addr));
  if (err < 0) {
  }
}

static void netlink_add_neigh(struct nlmsg* nlmsg, 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(nlmsg, RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, NDA_DST, addr, addrsize);
  netlink_attr(nlmsg, NDA_LLADDR, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

static int tunfd = -1;

#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

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 = 200;
  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;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    exit(1);
  }
  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(&nlmsg, sock, TUN_IFACE, LOCAL_IPV4);
  netlink_add_addr6(&nlmsg, 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(&nlmsg, 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(&nlmsg, sock, TUN_IFACE, &in6_addr, sizeof(in6_addr),
                    &macaddr, ETH_ALEN);
  macaddr = LOCAL_MAC;
  netlink_device_change(&nlmsg, sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN,
                        NULL);
  close(sock);
}

static void setup_binderfs();
static void setup_fusectl();
static void sandbox_common_mount_tmpfs(void)
{
  write_file("/proc/sys/fs/mount-max", "100000");
  if (mkdir("./syz-tmp", 0777))
    exit(1);
  if (mount("", "./syz-tmp", "tmpfs", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot", 0777))
    exit(1);
  if (mkdir("./syz-tmp/newroot/dev", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/proc", 0700))
    exit(1);
  if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL))
    exit(1);
  if (mkdir("./syz-tmp/newroot/selinux", 0700))
    exit(1);
  const char* selinux_path = "./syz-tmp/newroot/selinux";
  if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) {
    if (errno != ENOENT)
      exit(1);
    if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) &&
        errno != ENOENT)
      exit(1);
  }
  if (mkdir("./syz-tmp/newroot/sys", 0700))
    exit(1);
  if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL))
    exit(1);
  if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL,
            bind_mount_flags, NULL) &&
      errno != ENOENT)
    exit(1);
  if (mount("/proc/sys/fs/binfmt_misc",
            "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags,
            NULL) &&
      errno != ENOENT)
    exit(1);
  if (mkdir("./syz-tmp/pivot", 0777))
    exit(1);
  if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) {
    if (chdir("./syz-tmp"))
      exit(1);
  } else {
    if (chdir("/"))
      exit(1);
    if (umount2("./pivot", MNT_DETACH))
      exit(1);
  }
  if (chroot("./newroot"))
    exit(1);
  if (chdir("/"))
    exit(1);
  setup_binderfs();
  setup_fusectl();
}

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

static void setup_binderfs()
{
  if (mkdir("/dev/binderfs", 0777)) {
  }
  if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  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 = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  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);
}

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

static void drop_caps(void)
{
  struct __user_cap_header_struct cap_hdr = {};
  struct __user_cap_data_struct cap_data[2] = {};
  cap_hdr.version = _LINUX_CAPABILITY_VERSION_3;
  cap_hdr.pid = getpid();
  if (syscall(SYS_capget, &cap_hdr, &cap_data))
    exit(1);
  const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE);
  cap_data[0].effective &= ~drop;
  cap_data[0].permitted &= ~drop;
  cap_data[0].inheritable &= ~drop;
  if (syscall(SYS_capset, &cap_hdr, &cap_data))
    exit(1);
}

static int do_sandbox_none(void)
{
  if (unshare(CLONE_NEWPID)) {
  }
  int pid = fork();
  if (pid != 0)
    return wait_for_loop(pid);
  sandbox_common();
  drop_caps();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  initialize_tun();
  sandbox_common_mount_tmpfs();
  loop();
  exit(1);
}

uint64_t r[8] = {0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0x0};

void loop(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  *(uint32_t*)0x200000c0 = 0;
  *(uint32_t*)0x200000c4 = 0xc;
  *(uint64_t*)0x200000c8 = 0x20000440;
  memcpy((void*)0x20000440,
         "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18"
         "\x11\x00\x00",
         20);
  *(uint32_t*)0x20000454 = -1;
  memcpy((void*)0x20000458,
         "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b"
         "\x8a\xf8\xff\x00\x00\x00\x00\xbf\xa2\x00\x00\x00\x00\x00\x00\x07\x02"
         "\x00\x00\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x04\x00"
         "\x00\x00\x00\x00\x00\x85\x00\x00\x00\x01\x00\x00\x00\x95",
         65);
  *(uint64_t*)0x200000d0 = 0;
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint64_t*)0x200000e0 = 0;
  *(uint32_t*)0x200000e8 = 0;
  *(uint32_t*)0x200000ec = 0;
  memset((void*)0x200000f0, 0, 16);
  *(uint32_t*)0x20000100 = 0;
  *(uint32_t*)0x20000104 = 0;
  *(uint32_t*)0x20000108 = -1;
  *(uint32_t*)0x2000010c = 0;
  *(uint64_t*)0x20000110 = 0;
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0;
  *(uint32_t*)0x20000130 = 0;
  *(uint32_t*)0x20000134 = 0;
  *(uint64_t*)0x20000138 = 0;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint32_t*)0x2000014c = 0;
  *(uint32_t*)0x20000150 = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul);
  *(uint32_t*)0x20000000 = 0xa;
  *(uint32_t*)0x20000004 = 5;
  *(uint32_t*)0x20000008 = 2;
  *(uint32_t*)0x2000000c = 7;
  *(uint32_t*)0x20000010 = 0;
  *(uint32_t*)0x20000014 = -1;
  *(uint32_t*)0x20000018 = 0;
  memset((void*)0x2000001c, 0, 16);
  *(uint32_t*)0x2000002c = 0;
  *(uint32_t*)0x20000030 = -1;
  *(uint32_t*)0x20000034 = 0;
  *(uint32_t*)0x20000038 = 0;
  *(uint32_t*)0x2000003c = 0;
  *(uint64_t*)0x20000040 = 0;
  *(uint32_t*)0x20000048 = 0;
  *(uint32_t*)0x2000004c = 0;
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000000ul, /*size=*/0x48ul);
  if (res != -1)
    r[1] = res;
  *(uint32_t*)0x20000180 = 0;
  *(uint32_t*)0x20000184 = 0xc;
  *(uint64_t*)0x20000188 = 0x20000440;
  memcpy((void*)0x20000440,
         "\x18\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x80\x00\x00\x00\x18"
         "\x11\x00\x00",
         20);
  *(uint32_t*)0x20000454 = r[1];
  *(uint64_t*)0x20000190 = 0;
  *(uint32_t*)0x20000198 = 0;
  *(uint32_t*)0x2000019c = 0;
  *(uint64_t*)0x200001a0 = 0;
  *(uint32_t*)0x200001a8 = 0;
  *(uint32_t*)0x200001ac = 0;
  memset((void*)0x200001b0, 0, 16);
  *(uint32_t*)0x200001c0 = 0;
  *(uint32_t*)0x200001c4 = 0;
  *(uint32_t*)0x200001c8 = -1;
  *(uint32_t*)0x200001cc = 0;
  *(uint64_t*)0x200001d0 = 0;
  *(uint32_t*)0x200001d8 = 0;
  *(uint32_t*)0x200001dc = 0;
  *(uint64_t*)0x200001e0 = 0;
  *(uint32_t*)0x200001e8 = 0;
  *(uint32_t*)0x200001ec = 0;
  *(uint32_t*)0x200001f0 = 0;
  *(uint32_t*)0x200001f4 = 0;
  *(uint64_t*)0x200001f8 = 0;
  *(uint64_t*)0x20000200 = 0;
  *(uint32_t*)0x20000208 = 0;
  *(uint32_t*)0x2000020c = 0;
  *(uint32_t*)0x20000210 = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000180ul, /*size=*/0x90ul);
  *(uint32_t*)0x200000c0 = 0x11;
  *(uint32_t*)0x200000c4 = 0xc;
  *(uint64_t*)0x200000c8 = 0x20000440;
  *(uint64_t*)0x200000d0 = 0x20000240;
  memcpy((void*)0x20000240, "GPL\000", 4);
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint64_t*)0x200000e0 = 0;
  *(uint32_t*)0x200000e8 = 0;
  *(uint32_t*)0x200000ec = 0;
  memset((void*)0x200000f0, 0, 16);
  *(uint32_t*)0x20000100 = 0;
  *(uint32_t*)0x20000104 = 0;
  *(uint32_t*)0x20000108 = -1;
  *(uint32_t*)0x2000010c = 0;
  *(uint64_t*)0x20000110 = 0;
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0;
  *(uint32_t*)0x20000130 = 0;
  *(uint32_t*)0x20000134 = 0;
  *(uint64_t*)0x20000138 = 0;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint32_t*)0x2000014c = 0;
  *(uint32_t*)0x20000150 = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul);
  if (res != -1)
    r[2] = res;
  *(uint64_t*)0x20000200 = 0x20000500;
  memcpy((void*)0x20000500, "percpu_free_percpu\000", 19);
  *(uint32_t*)0x20000208 = r[2];
  *(uint32_t*)0x2000020c = 0;
  *(uint64_t*)0x20000210 = 0;
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000200ul, /*size=*/0x10ul);
  *(uint32_t*)0x200000c0 = 0x11;
  *(uint32_t*)0x200000c4 = 0xc;
  *(uint64_t*)0x200000c8 = 0x20000440;
  *(uint64_t*)0x200000d0 = 0x20000240;
  memcpy((void*)0x20000240, "GPL\000", 4);
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint64_t*)0x200000e0 = 0;
  *(uint32_t*)0x200000e8 = 0;
  *(uint32_t*)0x200000ec = 0;
  memset((void*)0x200000f0, 0, 16);
  *(uint32_t*)0x20000100 = 0;
  *(uint32_t*)0x20000104 = 0;
  *(uint32_t*)0x20000108 = -1;
  *(uint32_t*)0x2000010c = 0;
  *(uint64_t*)0x20000110 = 0;
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0;
  *(uint32_t*)0x20000130 = 0;
  *(uint32_t*)0x20000134 = 0;
  *(uint64_t*)0x20000138 = 0;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint32_t*)0x2000014c = 0;
  *(uint32_t*)0x20000150 = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul);
  if (res != -1)
    r[3] = res;
  *(uint64_t*)0x20000200 = 0x20000500;
  memcpy((void*)0x20000500, "percpu_free_percpu\000", 19);
  *(uint32_t*)0x20000208 = r[3];
  *(uint32_t*)0x2000020c = 0;
  *(uint64_t*)0x20000210 = 0;
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000200ul, /*size=*/0x10ul);
  memcpy((void*)0x200009c0,
         "\x19\x00\x00\x00\x04\x00\x00\x00\x08\x00\x00\x00\x05", 13);
  res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200009c0ul, /*size=*/0x48ul);
  if (res != -1)
    r[4] = res;
  *(uint32_t*)0x200000c0 = 6;
  *(uint32_t*)0x200000c4 = 0xc;
  *(uint64_t*)0x200000c8 = 0x200001c0;
  memcpy((void*)0x200001c0,
         "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18"
         "\x11\x00\x00",
         20);
  *(uint32_t*)0x200001d4 = r[4];
  memcpy((void*)0x200001d8,
         "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\x7b"
         "\x8a\xf8\xff\x00\x00\x00\x00\xbc\x82\x00\x00\x00\x00\x00\x00\xa6\x02"
         "\x00\x00\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x03\x00"
         "\x00\x00\x00\x00\x00\x85\x00\x00\x00\x33\x00\x00\x00\x95",
         65);
  *(uint64_t*)0x200000d0 = 0x20000180;
  memcpy((void*)0x20000180, "GPL\000", 4);
  *(uint32_t*)0x200000d8 = 0;
  *(uint32_t*)0x200000dc = 0;
  *(uint64_t*)0x200000e0 = 0;
  *(uint32_t*)0x200000e8 = 0x41000;
  *(uint32_t*)0x200000ec = 0;
  memset((void*)0x200000f0, 0, 16);
  *(uint32_t*)0x20000100 = 0;
  *(uint32_t*)0x20000104 = 0;
  *(uint32_t*)0x20000108 = -1;
  *(uint32_t*)0x2000010c = 0;
  *(uint64_t*)0x20000110 = 0;
  *(uint32_t*)0x20000118 = 0;
  *(uint32_t*)0x2000011c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint32_t*)0x20000128 = 0;
  *(uint32_t*)0x2000012c = 0;
  *(uint32_t*)0x20000130 = 0;
  *(uint32_t*)0x20000134 = 0;
  *(uint64_t*)0x20000138 = 0;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint32_t*)0x2000014c = 0;
  *(uint32_t*)0x20000150 = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x94ul);
  if (res != -1)
    r[5] = res;
  *(uint32_t*)0x20000180 = 3;
  *(uint32_t*)0x20000184 = 4;
  *(uint64_t*)0x20000188 = 0x20000580;
  memcpy(
      (void*)0x20000580,
      "\x85\x00\x00\x00\x2e\x00\x00\x00\x35\x00\x00\x00\x00\x00\xba\x00\x85\x00"
      "\x00\x00\x08\x00\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x64\xf1\xc0\xdc"
      "\xf9\x5d\x68\x06\xf8\xa1\x57\x2b\x41\xa1\x41\x08\x24\x58\x18\x35\xd8\x05"
      "\x32\xcb\x45\x7f\x45\x46\x98\x16\x5b\x61\xa3\xcf\x5f\xc6\xdd\x84\x28\x23"
      "\x0e\x35\x23\x01\x63\xcf\x09\x49\x49\xfc\x8b\x0a\x91\x14\xf4\x3d\x1b\x65"
      "\x38\xf5\x97\x6b\xe4\xad\xc0\x7e\x8c\x97\xd7\x6b\x18\x95\xc3\x22\xa1\xef"
      "\x1f\x83\xdd\x6c\x10\x23\x15\x8a\x10\x86\xf7\xd0\xf9\xdc\xe4\x35\x55\x4b"
      "\xc3\x4e\x6b\xde\xa4\x21\x7c\xfa\xa9\xa1\xf8\xad\x10\x87\xc6\x97\xac\xd9"
      "\xa7\xab\x69\x69\x22\xc9\xe3\x5f\x0a\xee\x61\x56\xc5\x99\xc7\xb2\x97\xde"
      "\x00\x19\xb2\x7d\x67\xbf\xb3\xfe\x24\x14\x54\xa0\x40\x80\xbf\x7f\x8c\xe0"
      "\x21\x12\x9c\x82\x0f\x9b\x80\xfe\x04\xbe\x5b\x11\xcc\x7b\xf1\x6c\x8a\x02"
      "\x9d\xf5\x73\xdb\x05\x23\x57\xc7\x1b\xe1\xf5\xe8\xce\x8d\xb0\xf9\x6e\xe1"
      "\xd8\xa3\x12\xe9\x67\x1e\x65\x2b\xd6\x42\xdd\x65\xd5\xb9\xde\x99\x03\x8b"
      "\xc9\xa5\xd9\x05\x44\x1c\x07\x85\xd3\x33\x13\x5a\x04\x00\x01\x30\xaf\x1b"
      "\xb4\xcd\x5b\x29\x5b\x9a\xdd\x7a\x02\x47\xca\xda\x05\x6b\xe3\xa9\xe2\x9f"
      "\x9d\x4b\x57\xdd\xd4\x13\x0c\xcb\xbb\xcd\x6e\x00\x00\x00\x00\x00\x00\x00"
      "\x41\x02\xd7\x4c\x39\x1a\xcc\x08\x80\x31\x2c\xc8\xa8\xc5\x1c\x7b\xdd\xd3"
      "\x69\x8f\x62\x0a\x69\xf4\x69\x84\xc2\xa2\xe7\x42\xfa\xde\xcf\x6f\xa7\x00"
      "\x00\x00\x00\x00\x00\xf0\x01\x00\x00\x80\x00\x00\x00\x00\x1b\x7e\x62\xca"
      "\x8c\x35\x72\xc3\xdc\x46\xdc\x75\x79\xc1\x00\x01\x00\x00\x00\x00\x00\x00"
      "\x1a\xf7\xd2\x14\x9c\x8a\xb5\xef\x18\x70\x87\xf7\x4b\x65\xa6\xc7\xda\x15"
      "\x48\x53\x89\x44\x37\xff\xcb\x5c\xc3\xa2\xb1\x37\x59\xc4\x2b\x35\x0b\x09"
      "\xa6\x39\xa8\xf2\x57\xd8\x12\x04\xe7\xe6\x1b\x7f\x72\x30\xdb\x06\x1f\xab"
      "\xbd\xc6\x11\xdf\x11\x29\x69\x52\x65\xa3\x42\x6e\x02\xf9\xb2\x4e\xbc\x13"
      "\x55\xc3\xbd\xe3\x4d\x28\xc2\xbe\x85\x94\xaf\x30\x23\x1a\x56\x7d\x1f\x0a"
      "\xc5\x29\x7d\xaa\x6e\x9e\x82\xeb\x90\xc6\x02\xad\xff\xc6\xa3\xde\x64\xb1"
      "\xdb\x82\xac\x54\x7a\xaf\x07\x00\x00\x23\xae\xbb\xf4\x91\x74\x50\xe5\x4b"
      "\x98\x9c\x60\x65\xae\xaf\xe7\x08\xed\x91\xd8\x6e\xe0\xae\xbd\x84\x28\x15"
      "\xa9\xba\xd2\x26\xf1\xed\xa0\x90\x45\x6f\x50\x86\x30\x60\xf0\x74\xc0\x46"
      "\x9f\xb8\x27\x52\x04\x00\x00\x00\x00\x00\x0f\x00\xcd\xb6\x28\xb5\xf3\x71"
      "\xce\x3b\x14\x31\xb2\x72\x6c\xbd\x8b\x93\x3f\x3c\xe2\xd4\x52\xd4\x6d\x56"
      "\x3b\x25\x4f\xc3\xbe\xf4\x47\xd8\x69\xa8\xcc\x49\xe1\x60\x58\x1b\x4a\xe4"
      "\x3a\x81\x26\x4d\x49\x8b\x4b\x6e\x7c\x2f\x9b\xc9\x62\xda\x26\x0e\x69\x9a"
      "\x9a\x0d\x2d\xa3\x2c\x55\x50\x47\xca\xd7\xe5\xde\xef\xca\x3a\x09\x42\xd6"
      "\x17\x0a\xa7\x56\x48\xbd\x19\x13\x33\x73\xdc\xee\x41\xdd\xec\xe3\xfe\x4c"
      "\x11\x15\x58\xe0\xc4\xa3\x7c\xcb\x72\xe2\x6c\x31\x36\x2c\xfb\x96\x06\x94"
      "\x1d\xfd\xb1\x0f\xee\x16\xeb\x67\xab\x9e\x95\x7c\xa0\x1b\x83\x8d\xef\xa3"
      "\x34\xe3\x6f\x70\x32\x04\xb0\x1d\xd3\x94\xbd\x1d\xd0\x8b\x0e\x1a\xa9\xeb"
      "\x39\x6c\x61\xdc\x2b\x69\xbc\x6a\xec\x6e\x8d\x2a\x1c\x52\x40\xb7\x34\x89"
      "\x63\x65\xf8\x54\xed\x66\x3c\xc0\xab\x4c\x4a\x03\x46\x8e\xeb\xe3\x78\x6f"
      "\x77\x32\x7e\xd3\x13\x60\x55\x4b\x8b\xca\x4d\x90\xe8\xe7\xfe\xfe\xb9\x58"
      "\x31\xf4\x95\x37\xe3\xf0\x8a\xd0\x6b\xc6\xc0\xc1\x84\x2f\xe5\xdb\x58\x26"
      "\x77\xb6\xa6\x88\x6b\xbf",
      762);
  *(uint64_t*)0x20000190 = 0x20001040;
  memcpy((void*)0x20001040, "GPL\000", 4);
  *(uint32_t*)0x20000198 = 0;
  *(uint32_t*)0x2000019c = 0x6b;
  *(uint64_t*)0x200001a0 = 0x200004c0;
  *(uint32_t*)0x200001a8 = 0;
  *(uint32_t*)0x200001ac = 0;
  memset((void*)0x200001b0, 0, 16);
  *(uint32_t*)0x200001c0 = 0;
  *(uint32_t*)0x200001c4 = 0;
  *(uint32_t*)0x200001c8 = -1;
  *(uint32_t*)0x200001cc = 8;
  *(uint64_t*)0x200001d0 = 0;
  *(uint32_t*)0x200001d8 = 0;
  *(uint32_t*)0x200001dc = 0x10;
  *(uint64_t*)0x200001e0 = 0;
  *(uint32_t*)0x200001e8 = 0;
  *(uint32_t*)0x200001ec = 0;
  *(uint32_t*)0x200001f0 = -1;
  *(uint32_t*)0x200001f4 = 0;
  *(uint64_t*)0x200001f8 = 0;
  *(uint64_t*)0x20000200 = 0;
  *(uint32_t*)0x20000208 = 0x10;
  *(uint32_t*)0x2000020c = 0;
  *(uint32_t*)0x20000210 = 0;
  res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000180ul, /*size=*/0x15ul);
  if (res != -1)
    r[6] = res;
  *(uint32_t*)0x20000500 = r[4];
  *(uint64_t*)0x20000508 = 0x20000480;
  *(uint32_t*)0x20000480 = 0;
  *(uint64_t*)0x20000510 = 0x200004c0;
  *(uint32_t*)0x200004c0 = r[6];
  *(uint64_t*)0x20000518 = 0;
  syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x20000500ul, /*size=*/0x20ul);
  *(uint32_t*)0x20000640 = 6;
  *(uint32_t*)0x20000644 = 0;
  *(uint64_t*)0x20000648 = 0;
  *(uint64_t*)0x20000650 = 0;
  *(uint32_t*)0x20000658 = 0;
  *(uint32_t*)0x2000065c = 0;
  *(uint64_t*)0x20000660 = 0;
  *(uint32_t*)0x20000668 = 0;
  *(uint32_t*)0x2000066c = 0;
  memset((void*)0x20000670, 0, 16);
  *(uint32_t*)0x20000680 = 0;
  *(uint32_t*)0x20000684 = 0x25;
  *(uint32_t*)0x20000688 = -1;
  *(uint32_t*)0x2000068c = 8;
  *(uint64_t*)0x20000690 = 0x20000280;
  *(uint32_t*)0x20000280 = 2;
  *(uint32_t*)0x20000284 = 0x80;
  *(uint32_t*)0x20000698 = 8;
  *(uint32_t*)0x2000069c = 0x10;
  *(uint64_t*)0x200006a0 = 0;
  *(uint32_t*)0x200006a8 = 0;
  *(uint32_t*)0x200006ac = 0;
  *(uint32_t*)0x200006b0 = 0;
  *(uint32_t*)0x200006b4 = 0;
  *(uint64_t*)0x200006b8 = 0;
  *(uint64_t*)0x200006c0 = 0;
  *(uint32_t*)0x200006c8 = 0x10;
  *(uint32_t*)0x200006cc = 0;
  *(uint32_t*)0x200006d0 = 0;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000640ul, /*size=*/0x90ul);
  *(uint32_t*)0x20000240 = r[5];
  *(uint32_t*)0x20000244 = -1;
  *(uint32_t*)0x20000248 = 0;
  syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x20000240ul, /*size=*/0x57ul);
  memcpy((void*)0x20000180, "syz_tun\000\000\000\000\000\000\000\000\000", 16);
  res = syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x8933, /*arg=*/0x20000180ul);
  if (res != -1)
    r[7] = *(uint32_t*)0x20000190;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint64_t*)0x20000150 = 0x20000240;
  *(uint64_t*)0x20000240 = 0x20000880;
  *(uint32_t*)0x20000880 = 0x48;
  *(uint16_t*)0x20000884 = 0x13;
  *(uint16_t*)0x20000886 = 0xd1f5;
  *(uint32_t*)0x20000888 = 0;
  *(uint32_t*)0x2000088c = 0;
  *(uint8_t*)0x20000890 = 0;
  *(uint8_t*)0x20000891 = 0;
  *(uint16_t*)0x20000892 = 0;
  *(uint32_t*)0x20000894 = r[7];
  *(uint32_t*)0x20000898 = 0;
  *(uint32_t*)0x2000089c = 0;
  *(uint16_t*)0x200008a0 = 8;
  *(uint16_t*)0x200008a2 = 0xd;
  *(uint32_t*)0x200008a4 = 0;
  *(uint16_t*)0x200008a8 = 0x18;
  STORE_BY_BITMASK(uint16_t, , 0x200008aa, 0x16, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200008ab, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200008ab, 1, 7, 1);
  *(uint16_t*)0x200008ac = 0x14;
  STORE_BY_BITMASK(uint16_t, , 0x200008ae, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200008af, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200008af, 1, 7, 1);
  *(uint16_t*)0x200008b0 = 0x10;
  *(uint16_t*)0x200008b2 = 2;
  *(uint32_t*)0x200008b4 = 5;
  *(uint32_t*)0x200008b8 = 0x61e;
  *(uint32_t*)0x200008bc = 0xfffffffc;
  *(uint16_t*)0x200008c0 = 8;
  *(uint16_t*)0x200008c2 = 0x29;
  *(uint32_t*)0x200008c4 = 0x10000;
  *(uint64_t*)0x20000248 = 0x48;
  *(uint64_t*)0x20000158 = 1;
  *(uint64_t*)0x20000160 = 0;
  *(uint64_t*)0x20000168 = 0;
  *(uint32_t*)0x20000170 = 0x40010;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x20000140ul, /*f=*/0ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  const char* reason;
  (void)reason;
  do_sandbox_none();
  return 0;
}