// https://syzkaller.appspot.com/bug?id=d8c3ff8bbd3553eb4f63b542c8de7ad43d1892ce
// 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 <pthread.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/epoll.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/swap.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/capability.h>
#include <linux/falloc.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/loop.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rfkill.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/veth.h>

#ifndef __NR_bpf
#define __NR_bpf 280
#endif
#ifndef __NR_connect
#define __NR_connect 203
#endif
#ifndef __NR_dup
#define __NR_dup 23
#endif
#ifndef __NR_ftruncate
#define __NR_ftruncate 46
#endif
#ifndef __NR_ioctl
#define __NR_ioctl 29
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mkdirat
#define __NR_mkdirat 34
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_mount
#define __NR_mount 40
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_read
#define __NR_read 63
#endif
#ifndef __NR_sendmmsg
#define __NR_sendmmsg 269
#endif
#ifndef __NR_socket
#define __NR_socket 198
#endif
#ifndef __NR_write
#define __NR_write 64
#endif

static unsigned long long procid;

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;
}

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

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

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

static void netlink_nest(struct nlmsg* nlmsg, int typ)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_type = typ;
  nlmsg->pos += sizeof(*attr);
  nlmsg->nested[nlmsg->nesting++] = attr;
}

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

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

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

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

static int netlink_next_msg(struct nlmsg* nlmsg, unsigned int offset,
                            unsigned int total_len)
{
  struct nlmsghdr* hdr = (struct nlmsghdr*)(nlmsg->buf + offset);
  if (offset == total_len || offset + hdr->nlmsg_len > total_len)
    return -1;
  return hdr->nlmsg_len;
}

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

static void netlink_add_device(struct nlmsg* nlmsg, int sock, const char* type,
                               const char* name)
{
  netlink_add_device_impl(nlmsg, type, name, false);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_veth(struct nlmsg* nlmsg, int sock, const char* name,
                             const char* peer)
{
  netlink_add_device_impl(nlmsg, "veth", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_nest(nlmsg, VETH_INFO_PEER);
  nlmsg->pos += sizeof(struct ifinfomsg);
  netlink_attr(nlmsg, IFLA_IFNAME, peer, strlen(peer));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_xfrm(struct nlmsg* nlmsg, int sock, const char* name)
{
  netlink_add_device_impl(nlmsg, "xfrm", name, true);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  int if_id = 1;
  netlink_attr(nlmsg, 2, &if_id, sizeof(if_id));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_hsr(struct nlmsg* nlmsg, int sock, const char* name,
                            const char* slave1, const char* slave2)
{
  netlink_add_device_impl(nlmsg, "hsr", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  int ifindex1 = if_nametoindex(slave1);
  netlink_attr(nlmsg, IFLA_HSR_SLAVE1, &ifindex1, sizeof(ifindex1));
  int ifindex2 = if_nametoindex(slave2);
  netlink_attr(nlmsg, IFLA_HSR_SLAVE2, &ifindex2, sizeof(ifindex2));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_linked(struct nlmsg* nlmsg, int sock, const char* type,
                               const char* name, const char* link)
{
  netlink_add_device_impl(nlmsg, type, name, false);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_vlan(struct nlmsg* nlmsg, int sock, const char* name,
                             const char* link, uint16_t id, uint16_t proto)
{
  netlink_add_device_impl(nlmsg, "vlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_VLAN_ID, &id, sizeof(id));
  netlink_attr(nlmsg, IFLA_VLAN_PROTOCOL, &proto, sizeof(proto));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_macvlan(struct nlmsg* nlmsg, int sock, const char* name,
                                const char* link)
{
  netlink_add_device_impl(nlmsg, "macvlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  uint32_t mode = MACVLAN_MODE_BRIDGE;
  netlink_attr(nlmsg, IFLA_MACVLAN_MODE, &mode, sizeof(mode));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static void netlink_add_geneve(struct nlmsg* nlmsg, int sock, const char* name,
                               uint32_t vni, struct in_addr* addr4,
                               struct in6_addr* addr6)
{
  netlink_add_device_impl(nlmsg, "geneve", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_GENEVE_ID, &vni, sizeof(vni));
  if (addr4)
    netlink_attr(nlmsg, IFLA_GENEVE_REMOTE, addr4, sizeof(*addr4));
  if (addr6)
    netlink_attr(nlmsg, IFLA_GENEVE_REMOTE6, addr6, sizeof(*addr6));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

#define IFLA_IPVLAN_FLAGS 2
#define IPVLAN_MODE_L3S 2
#undef IPVLAN_F_VEPA
#define IPVLAN_F_VEPA 2

static void netlink_add_ipvlan(struct nlmsg* nlmsg, int sock, const char* name,
                               const char* link, uint16_t mode, uint16_t flags)
{
  netlink_add_device_impl(nlmsg, "ipvlan", name, false);
  netlink_nest(nlmsg, IFLA_INFO_DATA);
  netlink_attr(nlmsg, IFLA_IPVLAN_MODE, &mode, sizeof(mode));
  netlink_attr(nlmsg, IFLA_IPVLAN_FLAGS, &flags, sizeof(flags));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int ifindex = if_nametoindex(link);
  netlink_attr(nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

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 struct nlmsg nlmsg;

#define DEVLINK_FAMILY_NAME "devlink"

#define DEVLINK_CMD_PORT_GET 5
#define DEVLINK_ATTR_BUS_NAME 1
#define DEVLINK_ATTR_DEV_NAME 2
#define DEVLINK_ATTR_NETDEV_NAME 7

static struct nlmsg nlmsg2;

static void initialize_devlink_ports(const char* bus_name, const char* dev_name,
                                     const char* netdev_prefix)
{
  struct genlmsghdr genlhdr;
  int len, total_len, id, err, offset;
  uint16_t netdev_index;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock == -1)
    exit(1);
  int rtsock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (rtsock == -1)
    exit(1);
  id = netlink_query_family_id(&nlmsg, sock, DEVLINK_FAMILY_NAME, true);
  if (id == -1)
    goto error;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = DEVLINK_CMD_PORT_GET;
  netlink_init(&nlmsg, id, NLM_F_DUMP, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, DEVLINK_ATTR_BUS_NAME, bus_name, strlen(bus_name) + 1);
  netlink_attr(&nlmsg, DEVLINK_ATTR_DEV_NAME, dev_name, strlen(dev_name) + 1);
  err = netlink_send_ext(&nlmsg, sock, id, &total_len, true);
  if (err < 0) {
    goto error;
  }
  offset = 0;
  netdev_index = 0;
  while ((len = netlink_next_msg(&nlmsg, offset, total_len)) != -1) {
    struct nlattr* attr = (struct nlattr*)(nlmsg.buf + offset + NLMSG_HDRLEN +
                                           NLMSG_ALIGN(sizeof(genlhdr)));
    for (; (char*)attr < nlmsg.buf + offset + len;
         attr = (struct nlattr*)((char*)attr + NLMSG_ALIGN(attr->nla_len))) {
      if (attr->nla_type == DEVLINK_ATTR_NETDEV_NAME) {
        char* port_name;
        char netdev_name[IFNAMSIZ];
        port_name = (char*)(attr + 1);
        snprintf(netdev_name, sizeof(netdev_name), "%s%d", netdev_prefix,
                 netdev_index);
        netlink_device_change(&nlmsg2, rtsock, port_name, true, 0, 0, 0,
                              netdev_name);
        break;
      }
    }
    offset += len;
    netdev_index++;
  }
error:
  close(rtsock);
  close(sock);
}

static int runcmdline(char* cmdline)
{
  int ret = system(cmdline);
  if (ret) {
  }
  return ret;
}

#define DEV_IPV4 "172.20.20.%d"
#define DEV_IPV6 "fe80::%02x"
#define DEV_MAC 0x00aaaaaaaaaa

static void netdevsim_add(unsigned int addr, unsigned int port_count)
{
  write_file("/sys/bus/netdevsim/del_device", "%u", addr);
  if (write_file("/sys/bus/netdevsim/new_device", "%u %u", addr, port_count)) {
    char buf[32];
    snprintf(buf, sizeof(buf), "netdevsim%d", addr);
    initialize_devlink_ports("netdevsim", buf, "netdevsim");
  }
}

#define WG_GENL_NAME "wireguard"
enum wg_cmd {
  WG_CMD_GET_DEVICE,
  WG_CMD_SET_DEVICE,
};
enum wgdevice_attribute {
  WGDEVICE_A_UNSPEC,
  WGDEVICE_A_IFINDEX,
  WGDEVICE_A_IFNAME,
  WGDEVICE_A_PRIVATE_KEY,
  WGDEVICE_A_PUBLIC_KEY,
  WGDEVICE_A_FLAGS,
  WGDEVICE_A_LISTEN_PORT,
  WGDEVICE_A_FWMARK,
  WGDEVICE_A_PEERS,
};
enum wgpeer_attribute {
  WGPEER_A_UNSPEC,
  WGPEER_A_PUBLIC_KEY,
  WGPEER_A_PRESHARED_KEY,
  WGPEER_A_FLAGS,
  WGPEER_A_ENDPOINT,
  WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
  WGPEER_A_LAST_HANDSHAKE_TIME,
  WGPEER_A_RX_BYTES,
  WGPEER_A_TX_BYTES,
  WGPEER_A_ALLOWEDIPS,
  WGPEER_A_PROTOCOL_VERSION,
};
enum wgallowedip_attribute {
  WGALLOWEDIP_A_UNSPEC,
  WGALLOWEDIP_A_FAMILY,
  WGALLOWEDIP_A_IPADDR,
  WGALLOWEDIP_A_CIDR_MASK,
};

static void netlink_wireguard_setup(void)
{
  const char ifname_a[] = "wg0";
  const char ifname_b[] = "wg1";
  const char ifname_c[] = "wg2";
  const char private_a[] =
      "\xa0\x5c\xa8\x4f\x6c\x9c\x8e\x38\x53\xe2\xfd\x7a\x70\xae\x0f\xb2\x0f\xa1"
      "\x52\x60\x0c\xb0\x08\x45\x17\x4f\x08\x07\x6f\x8d\x78\x43";
  const char private_b[] =
      "\xb0\x80\x73\xe8\xd4\x4e\x91\xe3\xda\x92\x2c\x22\x43\x82\x44\xbb\x88\x5c"
      "\x69\xe2\x69\xc8\xe9\xd8\x35\xb1\x14\x29\x3a\x4d\xdc\x6e";
  const char private_c[] =
      "\xa0\xcb\x87\x9a\x47\xf5\xbc\x64\x4c\x0e\x69\x3f\xa6\xd0\x31\xc7\x4a\x15"
      "\x53\xb6\xe9\x01\xb9\xff\x2f\x51\x8c\x78\x04\x2f\xb5\x42";
  const char public_a[] =
      "\x97\x5c\x9d\x81\xc9\x83\xc8\x20\x9e\xe7\x81\x25\x4b\x89\x9f\x8e\xd9\x25"
      "\xae\x9f\x09\x23\xc2\x3c\x62\xf5\x3c\x57\xcd\xbf\x69\x1c";
  const char public_b[] =
      "\xd1\x73\x28\x99\xf6\x11\xcd\x89\x94\x03\x4d\x7f\x41\x3d\xc9\x57\x63\x0e"
      "\x54\x93\xc2\x85\xac\xa4\x00\x65\xcb\x63\x11\xbe\x69\x6b";
  const char public_c[] =
      "\xf4\x4d\xa3\x67\xa8\x8e\xe6\x56\x4f\x02\x02\x11\x45\x67\x27\x08\x2f\x5c"
      "\xeb\xee\x8b\x1b\xf5\xeb\x73\x37\x34\x1b\x45\x9b\x39\x22";
  const uint16_t listen_a = 20001;
  const uint16_t listen_b = 20002;
  const uint16_t listen_c = 20003;
  const uint16_t af_inet = AF_INET;
  const uint16_t af_inet6 = AF_INET6;
  const struct sockaddr_in endpoint_b_v4 = {
      .sin_family = AF_INET,
      .sin_port = htons(listen_b),
      .sin_addr = {htonl(INADDR_LOOPBACK)}};
  const struct sockaddr_in endpoint_c_v4 = {
      .sin_family = AF_INET,
      .sin_port = htons(listen_c),
      .sin_addr = {htonl(INADDR_LOOPBACK)}};
  struct sockaddr_in6 endpoint_a_v6 = {.sin6_family = AF_INET6,
                                       .sin6_port = htons(listen_a)};
  endpoint_a_v6.sin6_addr = in6addr_loopback;
  struct sockaddr_in6 endpoint_c_v6 = {.sin6_family = AF_INET6,
                                       .sin6_port = htons(listen_c)};
  endpoint_c_v6.sin6_addr = in6addr_loopback;
  const struct in_addr first_half_v4 = {0};
  const struct in_addr second_half_v4 = {(uint32_t)htonl(128 << 24)};
  const struct in6_addr first_half_v6 = {{{0}}};
  const struct in6_addr second_half_v6 = {{{0x80}}};
  const uint8_t half_cidr = 1;
  const uint16_t persistent_keepalives[] = {1, 3, 7, 9, 14, 19};
  struct genlmsghdr genlhdr = {.cmd = WG_CMD_SET_DEVICE, .version = 1};
  int sock;
  int id, err;
  sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock == -1) {
    return;
  }
  id = netlink_query_family_id(&nlmsg, sock, WG_GENL_NAME, true);
  if (id == -1)
    goto error;
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_a, strlen(ifname_a) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_a, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_a, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4,
               sizeof(endpoint_b_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[0], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v6,
               sizeof(endpoint_c_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[1], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_b, strlen(ifname_b) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_b, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_b, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6,
               sizeof(endpoint_a_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[2], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_c, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_c_v4,
               sizeof(endpoint_c_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[3], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }
  netlink_init(&nlmsg, id, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(&nlmsg, WGDEVICE_A_IFNAME, ifname_c, strlen(ifname_c) + 1);
  netlink_attr(&nlmsg, WGDEVICE_A_PRIVATE_KEY, private_c, 32);
  netlink_attr(&nlmsg, WGDEVICE_A_LISTEN_PORT, &listen_c, 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGDEVICE_A_PEERS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_a, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_a_v6,
               sizeof(endpoint_a_v6));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[4], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v4,
               sizeof(first_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &first_half_v6,
               sizeof(first_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGPEER_A_PUBLIC_KEY, public_b, 32);
  netlink_attr(&nlmsg, WGPEER_A_ENDPOINT, &endpoint_b_v4,
               sizeof(endpoint_b_v4));
  netlink_attr(&nlmsg, WGPEER_A_PERSISTENT_KEEPALIVE_INTERVAL,
               &persistent_keepalives[5], 2);
  netlink_nest(&nlmsg, NLA_F_NESTED | WGPEER_A_ALLOWEDIPS);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v4,
               sizeof(second_half_v4));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_nest(&nlmsg, NLA_F_NESTED | 0);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_FAMILY, &af_inet6, 2);
  netlink_attr(&nlmsg, WGALLOWEDIP_A_IPADDR, &second_half_v6,
               sizeof(second_half_v6));
  netlink_attr(&nlmsg, WGALLOWEDIP_A_CIDR_MASK, &half_cidr, 1);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  netlink_done(&nlmsg);
  err = netlink_send(&nlmsg, sock);
  if (err < 0) {
  }

error:
  close(sock);
}

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"},         {"veth", 0},           {"wireguard", "wg0"},
      {"wireguard", "wg1"},        {"wireguard", "wg2"},
  };
  const char* devmasters[] = {"bridge", "bond", "team", "batadv"};
  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},
      {"vxcan0", 0, true},
      {"vxcan1", 0, true},
      {"caif0", ETH_ALEN},
      {"batadv0", ETH_ALEN},
      {netdevsim, ETH_ALEN},
      {"xfrm0", ETH_ALEN},
      {"veth0_virt_wifi", ETH_ALEN},
      {"veth1_virt_wifi", ETH_ALEN},
      {"virt_wifi0", ETH_ALEN},
      {"veth0_vlan", ETH_ALEN},
      {"veth1_vlan", ETH_ALEN},
      {"vlan0", ETH_ALEN},
      {"vlan1", ETH_ALEN},
      {"macvlan0", ETH_ALEN},
      {"macvlan1", ETH_ALEN},
      {"ipvlan0", ETH_ALEN},
      {"ipvlan1", ETH_ALEN},
      {"veth0_macvtap", ETH_ALEN},
      {"veth1_macvtap", ETH_ALEN},
      {"macvtap0", ETH_ALEN},
      {"macsec0", ETH_ALEN},
      {"veth0_to_batadv", ETH_ALEN},
      {"veth1_to_batadv", ETH_ALEN},
      {"batadv_slave_0", ETH_ALEN},
      {"batadv_slave_1", ETH_ALEN},
      {"geneve0", ETH_ALEN},
      {"geneve1", ETH_ALEN},
      {"wg0", 0},
      {"wg1", 0},
      {"wg2", 0},
  };
  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(&nlmsg, 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(&nlmsg, sock, slave0, veth0);
    sprintf(slave1, "%s_slave_1", devmasters[i]);
    sprintf(veth1, "veth1_to_%s", devmasters[i]);
    netlink_add_veth(&nlmsg, sock, slave1, veth1);
    sprintf(master, "%s0", devmasters[i]);
    netlink_device_change(&nlmsg, sock, slave0, false, master, 0, 0, NULL);
    netlink_device_change(&nlmsg, sock, slave1, false, master, 0, 0, NULL);
  }
  netlink_add_xfrm(&nlmsg, sock, "xfrm0");
  netlink_device_change(&nlmsg, sock, "bridge_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "bridge_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "hsr_slave_0", "veth0_to_hsr");
  netlink_add_veth(&nlmsg, sock, "hsr_slave_1", "veth1_to_hsr");
  netlink_add_hsr(&nlmsg, sock, "hsr0", "hsr_slave_0", "hsr_slave_1");
  netlink_device_change(&nlmsg, sock, "hsr_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "hsr_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "veth0_virt_wifi", "veth1_virt_wifi");
  netlink_add_linked(&nlmsg, sock, "virt_wifi", "virt_wifi0",
                     "veth1_virt_wifi");
  netlink_add_veth(&nlmsg, sock, "veth0_vlan", "veth1_vlan");
  netlink_add_vlan(&nlmsg, sock, "vlan0", "veth0_vlan", 0, htons(ETH_P_8021Q));
  netlink_add_vlan(&nlmsg, sock, "vlan1", "veth0_vlan", 1, htons(ETH_P_8021AD));
  netlink_add_macvlan(&nlmsg, sock, "macvlan0", "veth1_vlan");
  netlink_add_macvlan(&nlmsg, sock, "macvlan1", "veth1_vlan");
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan0", "veth0_vlan", IPVLAN_MODE_L2, 0);
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan1", "veth0_vlan", IPVLAN_MODE_L3S,
                     IPVLAN_F_VEPA);
  netlink_add_veth(&nlmsg, sock, "veth0_macvtap", "veth1_macvtap");
  netlink_add_linked(&nlmsg, sock, "macvtap", "macvtap0", "veth0_macvtap");
  netlink_add_linked(&nlmsg, sock, "macsec", "macsec0", "veth1_macvtap");
  char addr[32];
  sprintf(addr, DEV_IPV4, 14 + 10);
  struct in_addr geneve_addr4;
  if (inet_pton(AF_INET, addr, &geneve_addr4) <= 0)
    exit(1);
  struct in6_addr geneve_addr6;
  if (inet_pton(AF_INET6, "fc00::01", &geneve_addr6) <= 0)
    exit(1);
  netlink_add_geneve(&nlmsg, sock, "geneve0", 0, &geneve_addr4, 0);
  netlink_add_geneve(&nlmsg, sock, "geneve1", 1, 0, &geneve_addr6);
  netdevsim_add((int)procid, 4);
  netlink_wireguard_setup();
  for (i = 0; i < sizeof(devices) / (sizeof(devices[0])); i++) {
    char addr[32];
    sprintf(addr, DEV_IPV4, i + 10);
    netlink_add_addr4(&nlmsg, sock, devices[i].name, addr);
    if (!devices[i].noipv6) {
      sprintf(addr, DEV_IPV6, i + 10);
      netlink_add_addr6(&nlmsg, sock, devices[i].name, addr);
    }
    uint64_t macaddr = DEV_MAC + ((i + 10ull) << 40);
    netlink_device_change(&nlmsg, sock, devices[i].name, true, 0, &macaddr,
                          devices[i].macsize, NULL);
  }
  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(&nlmsg, sock, dev, addr);
    if (!devtypes[i].noipv6) {
      sprintf(addr, "fe88::%02x:%02x", i, (int)procid + 1);
      netlink_add_addr6(&nlmsg, 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(&nlmsg, sock, dev, !devtypes[i].noup, 0, &macaddr,
                          macsize, NULL);
  }
  close(sock);
}

#define MAX_FDS 30

#define BTPROTO_HCI 1
#define ACL_LINK 1
#define SCAN_PAGE 2

typedef struct {
  uint8_t b[6];
} __attribute__((packed)) bdaddr_t;

#define HCI_COMMAND_PKT 1
#define HCI_EVENT_PKT 4
#define HCI_VENDOR_PKT 0xff

struct hci_command_hdr {
  uint16_t opcode;
  uint8_t plen;
} __attribute__((packed));

struct hci_event_hdr {
  uint8_t evt;
  uint8_t plen;
} __attribute__((packed));

#define HCI_EV_CONN_COMPLETE 0x03
struct hci_ev_conn_complete {
  uint8_t status;
  uint16_t handle;
  bdaddr_t bdaddr;
  uint8_t link_type;
  uint8_t encr_mode;
} __attribute__((packed));

#define HCI_EV_CONN_REQUEST 0x04
struct hci_ev_conn_request {
  bdaddr_t bdaddr;
  uint8_t dev_class[3];
  uint8_t link_type;
} __attribute__((packed));

#define HCI_EV_REMOTE_FEATURES 0x0b
struct hci_ev_remote_features {
  uint8_t status;
  uint16_t handle;
  uint8_t features[8];
} __attribute__((packed));

#define HCI_EV_CMD_COMPLETE 0x0e
struct hci_ev_cmd_complete {
  uint8_t ncmd;
  uint16_t opcode;
} __attribute__((packed));

#define HCI_OP_WRITE_SCAN_ENABLE 0x0c1a

#define HCI_OP_READ_BUFFER_SIZE 0x1005
struct hci_rp_read_buffer_size {
  uint8_t status;
  uint16_t acl_mtu;
  uint8_t sco_mtu;
  uint16_t acl_max_pkt;
  uint16_t sco_max_pkt;
} __attribute__((packed));

#define HCI_OP_READ_BD_ADDR 0x1009
struct hci_rp_read_bd_addr {
  uint8_t status;
  bdaddr_t bdaddr;
} __attribute__((packed));

#define HCI_EV_LE_META 0x3e
struct hci_ev_le_meta {
  uint8_t subevent;
} __attribute__((packed));

#define HCI_EV_LE_CONN_COMPLETE 0x01
struct hci_ev_le_conn_complete {
  uint8_t status;
  uint16_t handle;
  uint8_t role;
  uint8_t bdaddr_type;
  bdaddr_t bdaddr;
  uint16_t interval;
  uint16_t latency;
  uint16_t supervision_timeout;
  uint8_t clk_accurancy;
} __attribute__((packed));

struct hci_dev_req {
  uint16_t dev_id;
  uint32_t dev_opt;
};

struct vhci_vendor_pkt_request {
  uint8_t type;
  uint8_t opcode;
} __attribute__((packed));

struct vhci_pkt {
  uint8_t type;
  union {
    struct {
      uint8_t opcode;
      uint16_t id;
    } __attribute__((packed)) vendor_pkt;
    struct hci_command_hdr command_hdr;
  };
} __attribute__((packed));

#define HCIDEVUP _IOW('H', 201, int)
#define HCISETSCAN _IOW('H', 221, int)

static int vhci_fd = -1;

static void rfkill_unblock_all()
{
  int fd = open("/dev/rfkill", O_WRONLY);
  if (fd < 0)
    exit(1);
  struct rfkill_event event = {0};
  event.idx = 0;
  event.type = RFKILL_TYPE_ALL;
  event.op = RFKILL_OP_CHANGE_ALL;
  event.soft = 0;
  event.hard = 0;
  if (write(fd, &event, sizeof(event)) < 0)
    exit(1);
  close(fd);
}

static void hci_send_event_packet(int fd, uint8_t evt, void* data,
                                  size_t data_len)
{
  struct iovec iv[3];
  struct hci_event_hdr hdr;
  hdr.evt = evt;
  hdr.plen = data_len;
  uint8_t type = HCI_EVENT_PKT;
  iv[0].iov_base = &type;
  iv[0].iov_len = sizeof(type);
  iv[1].iov_base = &hdr;
  iv[1].iov_len = sizeof(hdr);
  iv[2].iov_base = data;
  iv[2].iov_len = data_len;
  if (writev(fd, iv, sizeof(iv) / sizeof(struct iovec)) < 0)
    exit(1);
}

static void hci_send_event_cmd_complete(int fd, uint16_t opcode, void* data,
                                        size_t data_len)
{
  struct iovec iv[4];
  struct hci_event_hdr hdr;
  hdr.evt = HCI_EV_CMD_COMPLETE;
  hdr.plen = sizeof(struct hci_ev_cmd_complete) + data_len;
  struct hci_ev_cmd_complete evt_hdr;
  evt_hdr.ncmd = 1;
  evt_hdr.opcode = opcode;
  uint8_t type = HCI_EVENT_PKT;
  iv[0].iov_base = &type;
  iv[0].iov_len = sizeof(type);
  iv[1].iov_base = &hdr;
  iv[1].iov_len = sizeof(hdr);
  iv[2].iov_base = &evt_hdr;
  iv[2].iov_len = sizeof(evt_hdr);
  iv[3].iov_base = data;
  iv[3].iov_len = data_len;
  if (writev(fd, iv, sizeof(iv) / sizeof(struct iovec)) < 0)
    exit(1);
}

static bool process_command_pkt(int fd, char* buf, ssize_t buf_size)
{
  struct hci_command_hdr* hdr = (struct hci_command_hdr*)buf;
  if (buf_size < (ssize_t)sizeof(struct hci_command_hdr) ||
      hdr->plen != buf_size - sizeof(struct hci_command_hdr))
    exit(1);
  switch (hdr->opcode) {
  case HCI_OP_WRITE_SCAN_ENABLE: {
    uint8_t status = 0;
    hci_send_event_cmd_complete(fd, hdr->opcode, &status, sizeof(status));
    return true;
  }
  case HCI_OP_READ_BD_ADDR: {
    struct hci_rp_read_bd_addr rp = {0};
    rp.status = 0;
    memset(&rp.bdaddr, 0xaa, 6);
    hci_send_event_cmd_complete(fd, hdr->opcode, &rp, sizeof(rp));
    return false;
  }
  case HCI_OP_READ_BUFFER_SIZE: {
    struct hci_rp_read_buffer_size rp = {0};
    rp.status = 0;
    rp.acl_mtu = 1021;
    rp.sco_mtu = 96;
    rp.acl_max_pkt = 4;
    rp.sco_max_pkt = 6;
    hci_send_event_cmd_complete(fd, hdr->opcode, &rp, sizeof(rp));
    return false;
  }
  }
  char dummy[0xf9] = {0};
  hci_send_event_cmd_complete(fd, hdr->opcode, dummy, sizeof(dummy));
  return false;
}

static void* event_thread(void* arg)
{
  while (1) {
    char buf[1024] = {0};
    ssize_t buf_size = read(vhci_fd, buf, sizeof(buf));
    if (buf_size < 0)
      exit(1);
    if (buf_size > 0 && buf[0] == HCI_COMMAND_PKT) {
      if (process_command_pkt(vhci_fd, buf + 1, buf_size - 1))
        break;
    }
  }
  return NULL;
}
#define HCI_HANDLE_1 200
#define HCI_HANDLE_2 201

#define HCI_PRIMARY 0
#define HCI_OP_RESET 0x0c03

static void initialize_vhci()
{
  int hci_sock = socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI);
  if (hci_sock < 0)
    exit(1);
  vhci_fd = open("/dev/vhci", O_RDWR);
  if (vhci_fd == -1)
    exit(1);
  const int kVhciFd = 202;
  if (dup2(vhci_fd, kVhciFd) < 0)
    exit(1);
  close(vhci_fd);
  vhci_fd = kVhciFd;
  struct vhci_vendor_pkt_request vendor_pkt_req = {HCI_VENDOR_PKT, HCI_PRIMARY};
  if (write(vhci_fd, &vendor_pkt_req, sizeof(vendor_pkt_req)) !=
      sizeof(vendor_pkt_req))
    exit(1);
  struct vhci_pkt vhci_pkt;
  if (read(vhci_fd, &vhci_pkt, sizeof(vhci_pkt)) != sizeof(vhci_pkt))
    exit(1);
  if (vhci_pkt.type == HCI_COMMAND_PKT &&
      vhci_pkt.command_hdr.opcode == HCI_OP_RESET) {
    char response[1] = {0};
    hci_send_event_cmd_complete(vhci_fd, HCI_OP_RESET, response,
                                sizeof(response));
    if (read(vhci_fd, &vhci_pkt, sizeof(vhci_pkt)) != sizeof(vhci_pkt))
      exit(1);
  }
  if (vhci_pkt.type != HCI_VENDOR_PKT)
    exit(1);
  int dev_id = vhci_pkt.vendor_pkt.id;
  pthread_t th;
  if (pthread_create(&th, NULL, event_thread, NULL))
    exit(1);
  int ret = ioctl(hci_sock, HCIDEVUP, dev_id);
  if (ret) {
    if (errno == ERFKILL) {
      rfkill_unblock_all();
      ret = ioctl(hci_sock, HCIDEVUP, dev_id);
    }
    if (ret && errno != EALREADY)
      exit(1);
  }
  struct hci_dev_req dr = {0};
  dr.dev_id = dev_id;
  dr.dev_opt = SCAN_PAGE;
  if (ioctl(hci_sock, HCISETSCAN, &dr))
    exit(1);
  struct hci_ev_conn_request request;
  memset(&request, 0, sizeof(request));
  memset(&request.bdaddr, 0xaa, 6);
  *(uint8_t*)&request.bdaddr.b[5] = 0x10;
  request.link_type = ACL_LINK;
  hci_send_event_packet(vhci_fd, HCI_EV_CONN_REQUEST, &request,
                        sizeof(request));
  struct hci_ev_conn_complete complete;
  memset(&complete, 0, sizeof(complete));
  complete.status = 0;
  complete.handle = HCI_HANDLE_1;
  memset(&complete.bdaddr, 0xaa, 6);
  *(uint8_t*)&complete.bdaddr.b[5] = 0x10;
  complete.link_type = ACL_LINK;
  complete.encr_mode = 0;
  hci_send_event_packet(vhci_fd, HCI_EV_CONN_COMPLETE, &complete,
                        sizeof(complete));
  struct hci_ev_remote_features features;
  memset(&features, 0, sizeof(features));
  features.status = 0;
  features.handle = HCI_HANDLE_1;
  hci_send_event_packet(vhci_fd, HCI_EV_REMOTE_FEATURES, &features,
                        sizeof(features));
  struct {
    struct hci_ev_le_meta le_meta;
    struct hci_ev_le_conn_complete le_conn;
  } le_conn;
  memset(&le_conn, 0, sizeof(le_conn));
  le_conn.le_meta.subevent = HCI_EV_LE_CONN_COMPLETE;
  memset(&le_conn.le_conn.bdaddr, 0xaa, 6);
  *(uint8_t*)&le_conn.le_conn.bdaddr.b[5] = 0x11;
  le_conn.le_conn.role = 1;
  le_conn.le_conn.handle = HCI_HANDLE_2;
  hci_send_event_packet(vhci_fd, HCI_EV_LE_META, &le_conn, sizeof(le_conn));
  pthread_join(th, NULL);
  close(hci_sock);
}

//% This code is derived from puff.{c,h}, found in the zlib development. The
//% original files come with the following copyright notice:

//% Copyright (C) 2002-2013 Mark Adler, all rights reserved
//% version 2.3, 21 Jan 2013
//% This software is provided 'as-is', without any express or implied
//% warranty.  In no event will the author be held liable for any damages
//% arising from the use of this software.
//% Permission is granted to anyone to use this software for any purpose,
//% including commercial applications, and to alter it and redistribute it
//% freely, subject to the following restrictions:
//% 1. The origin of this software must not be misrepresented; you must not
//%    claim that you wrote the original software. If you use this software
//%    in a product, an acknowledgment in the product documentation would be
//%    appreciated but is not required.
//% 2. Altered source versions must be plainly marked as such, and must not be
//%    misrepresented as being the original software.
//% 3. This notice may not be removed or altered from any source distribution.
//% Mark Adler    madler@alumni.caltech.edu

//% BEGIN CODE DERIVED FROM puff.{c,h}

#define MAXBITS 15
#define MAXLCODES 286
#define MAXDCODES 30
#define MAXCODES (MAXLCODES + MAXDCODES)
#define FIXLCODES 288

struct puff_state {
  unsigned char* out;
  unsigned long outlen;
  unsigned long outcnt;
  const unsigned char* in;
  unsigned long inlen;
  unsigned long incnt;
  int bitbuf;
  int bitcnt;
  jmp_buf env;
};
static int puff_bits(struct puff_state* s, int need)
{
  long val = s->bitbuf;
  while (s->bitcnt < need) {
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    val |= (long)(s->in[s->incnt++]) << s->bitcnt;
    s->bitcnt += 8;
  }
  s->bitbuf = (int)(val >> need);
  s->bitcnt -= need;
  return (int)(val & ((1L << need) - 1));
}
static int puff_stored(struct puff_state* s)
{
  s->bitbuf = 0;
  s->bitcnt = 0;
  if (s->incnt + 4 > s->inlen)
    return 2;
  unsigned len = s->in[s->incnt++];
  len |= s->in[s->incnt++] << 8;
  if (s->in[s->incnt++] != (~len & 0xff) ||
      s->in[s->incnt++] != ((~len >> 8) & 0xff))
    return -2;
  if (s->incnt + len > s->inlen)
    return 2;
  if (s->outcnt + len > s->outlen)
    return 1;
  for (; len--; s->outcnt++, s->incnt++) {
    if (s->in[s->incnt])
      s->out[s->outcnt] = s->in[s->incnt];
  }
  return 0;
}
struct puff_huffman {
  short* count;
  short* symbol;
};
static int puff_decode(struct puff_state* s, const struct puff_huffman* h)
{
  int first = 0;
  int index = 0;
  int bitbuf = s->bitbuf;
  int left = s->bitcnt;
  int code = first = index = 0;
  int len = 1;
  short* next = h->count + 1;
  while (1) {
    while (left--) {
      code |= bitbuf & 1;
      bitbuf >>= 1;
      int count = *next++;
      if (code - count < first) {
        s->bitbuf = bitbuf;
        s->bitcnt = (s->bitcnt - len) & 7;
        return h->symbol[index + (code - first)];
      }
      index += count;
      first += count;
      first <<= 1;
      code <<= 1;
      len++;
    }
    left = (MAXBITS + 1) - len;
    if (left == 0)
      break;
    if (s->incnt == s->inlen)
      longjmp(s->env, 1);
    bitbuf = s->in[s->incnt++];
    if (left > 8)
      left = 8;
  }
  return -10;
}
static int puff_construct(struct puff_huffman* h, const short* length, int n)
{
  int len;
  for (len = 0; len <= MAXBITS; len++)
    h->count[len] = 0;
  int symbol;
  for (symbol = 0; symbol < n; symbol++)
    (h->count[length[symbol]])++;
  if (h->count[0] == n)
    return 0;
  int left = 1;
  for (len = 1; len <= MAXBITS; len++) {
    left <<= 1;
    left -= h->count[len];
    if (left < 0)
      return left;
  }
  short offs[MAXBITS + 1];
  offs[1] = 0;
  for (len = 1; len < MAXBITS; len++)
    offs[len + 1] = offs[len] + h->count[len];
  for (symbol = 0; symbol < n; symbol++)
    if (length[symbol] != 0)
      h->symbol[offs[length[symbol]]++] = symbol;
  return left;
}
static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode,
                      const struct puff_huffman* distcode)
{
  static const short lens[29] = {3,  4,  5,  6,   7,   8,   9,   10,  11, 13,
                                 15, 17, 19, 23,  27,  31,  35,  43,  51, 59,
                                 67, 83, 99, 115, 131, 163, 195, 227, 258};
  static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2,
                                 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0};
  static const short dists[30] = {
      1,    2,    3,    4,    5,    7,    9,    13,    17,    25,
      33,   49,   65,   97,   129,  193,  257,  385,   513,   769,
      1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577};
  static const short dext[30] = {0, 0, 0,  0,  1,  1,  2,  2,  3,  3,
                                 4, 4, 5,  5,  6,  6,  7,  7,  8,  8,
                                 9, 9, 10, 10, 11, 11, 12, 12, 13, 13};
  int symbol;
  do {
    symbol = puff_decode(s, lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 256) {
      if (s->outcnt == s->outlen)
        return 1;
      if (symbol)
        s->out[s->outcnt] = symbol;
      s->outcnt++;
    } else if (symbol > 256) {
      symbol -= 257;
      if (symbol >= 29)
        return -10;
      int len = lens[symbol] + puff_bits(s, lext[symbol]);
      symbol = puff_decode(s, distcode);
      if (symbol < 0)
        return symbol;
      unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]);
      if (dist > s->outcnt)
        return -11;
      if (s->outcnt + len > s->outlen)
        return 1;
      while (len--) {
        if (dist <= s->outcnt && s->out[s->outcnt - dist])
          s->out[s->outcnt] = s->out[s->outcnt - dist];
        s->outcnt++;
      }
    }
  } while (symbol != 256);
  return 0;
}
static int puff_fixed(struct puff_state* s)
{
  static int virgin = 1;
  static short lencnt[MAXBITS + 1], lensym[FIXLCODES];
  static short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  static struct puff_huffman lencode, distcode;
  if (virgin) {
    lencode.count = lencnt;
    lencode.symbol = lensym;
    distcode.count = distcnt;
    distcode.symbol = distsym;
    short lengths[FIXLCODES];
    int symbol;
    for (symbol = 0; symbol < 144; symbol++)
      lengths[symbol] = 8;
    for (; symbol < 256; symbol++)
      lengths[symbol] = 9;
    for (; symbol < 280; symbol++)
      lengths[symbol] = 7;
    for (; symbol < FIXLCODES; symbol++)
      lengths[symbol] = 8;
    puff_construct(&lencode, lengths, FIXLCODES);
    for (symbol = 0; symbol < MAXDCODES; symbol++)
      lengths[symbol] = 5;
    puff_construct(&distcode, lengths, MAXDCODES);
    virgin = 0;
  }
  return puff_codes(s, &lencode, &distcode);
}
static int puff_dynamic(struct puff_state* s)
{
  static const short order[19] = {16, 17, 18, 0, 8,  7, 9,  6, 10, 5,
                                  11, 4,  12, 3, 13, 2, 14, 1, 15};
  int nlen = puff_bits(s, 5) + 257;
  int ndist = puff_bits(s, 5) + 1;
  int ncode = puff_bits(s, 4) + 4;
  if (nlen > MAXLCODES || ndist > MAXDCODES)
    return -3;
  short lengths[MAXCODES];
  int index;
  for (index = 0; index < ncode; index++)
    lengths[order[index]] = puff_bits(s, 3);
  for (; index < 19; index++)
    lengths[order[index]] = 0;
  short lencnt[MAXBITS + 1], lensym[MAXLCODES];
  struct puff_huffman lencode = {lencnt, lensym};
  int err = puff_construct(&lencode, lengths, 19);
  if (err != 0)
    return -4;
  index = 0;
  while (index < nlen + ndist) {
    int symbol;
    int len;
    symbol = puff_decode(s, &lencode);
    if (symbol < 0)
      return symbol;
    if (symbol < 16)
      lengths[index++] = symbol;
    else {
      len = 0;
      if (symbol == 16) {
        if (index == 0)
          return -5;
        len = lengths[index - 1];
        symbol = 3 + puff_bits(s, 2);
      } else if (symbol == 17)
        symbol = 3 + puff_bits(s, 3);
      else
        symbol = 11 + puff_bits(s, 7);
      if (index + symbol > nlen + ndist)
        return -6;
      while (symbol--)
        lengths[index++] = len;
    }
  }
  if (lengths[256] == 0)
    return -9;
  err = puff_construct(&lencode, lengths, nlen);
  if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1]))
    return -7;
  short distcnt[MAXBITS + 1], distsym[MAXDCODES];
  struct puff_huffman distcode = {distcnt, distsym};
  err = puff_construct(&distcode, lengths + nlen, ndist);
  if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1]))
    return -8;
  return puff_codes(s, &lencode, &distcode);
}
static int puff(unsigned char* dest, unsigned long* destlen,
                const unsigned char* source, unsigned long sourcelen)
{
  struct puff_state s = {
      .out = dest,
      .outlen = *destlen,
      .outcnt = 0,
      .in = source,
      .inlen = sourcelen,
      .incnt = 0,
      .bitbuf = 0,
      .bitcnt = 0,
  };
  int err;
  if (setjmp(s.env) != 0)
    err = 2;
  else {
    int last;
    do {
      last = puff_bits(&s, 1);
      int type = puff_bits(&s, 2);
      err = type == 0 ? puff_stored(&s)
                      : (type == 1 ? puff_fixed(&s)
                                   : (type == 2 ? puff_dynamic(&s) : -1));
      if (err != 0)
        break;
    } while (!last);
  }
  *destlen = s.outcnt;
  return err;
}

//% END CODE DERIVED FROM puff.{c,h}

#define ZLIB_HEADER_WIDTH 2

static int puff_zlib_to_file(const unsigned char* source,
                             unsigned long sourcelen, int dest_fd)
{
  if (sourcelen < ZLIB_HEADER_WIDTH)
    return 0;
  source += ZLIB_HEADER_WIDTH;
  sourcelen -= ZLIB_HEADER_WIDTH;
  const unsigned long max_destlen = 132 << 20;
  void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ,
                   MAP_PRIVATE | MAP_ANON, -1, 0);
  if (ret == MAP_FAILED)
    return -1;
  unsigned char* dest = (unsigned char*)ret;
  unsigned long destlen = max_destlen;
  int err = puff(dest, &destlen, source, sourcelen);
  if (err) {
    munmap(dest, max_destlen);
    errno = -err;
    return -1;
  }
  if (write(dest_fd, dest, destlen) != (ssize_t)destlen) {
    munmap(dest, max_destlen);
    return -1;
  }
  return munmap(dest, max_destlen);
}

static int setup_loop_device(unsigned char* data, unsigned long size,
                             const char* loopname, int* loopfd_p)
{
  int err = 0, loopfd = -1;
  int memfd = syscall(__NR_memfd_create, "syzkaller", 0);
  if (memfd == -1) {
    err = errno;
    goto error;
  }
  if (puff_zlib_to_file(data, size, memfd)) {
    err = errno;
    goto error_close_memfd;
  }
  loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    err = errno;
    goto error_close_memfd;
  }
  if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
    if (errno != EBUSY) {
      err = errno;
      goto error_close_loop;
    }
    ioctl(loopfd, LOOP_CLR_FD, 0);
    usleep(1000);
    if (ioctl(loopfd, LOOP_SET_FD, memfd)) {
      err = errno;
      goto error_close_loop;
    }
  }
  close(memfd);
  *loopfd_p = loopfd;
  return 0;

error_close_loop:
  close(loopfd);
error_close_memfd:
  close(memfd);
error:
  errno = err;
  return -1;
}

static void reset_loop_device(const char* loopname)
{
  int loopfd = open(loopname, O_RDWR);
  if (loopfd == -1) {
    return;
  }
  if (ioctl(loopfd, LOOP_CLR_FD, 0)) {
  }
  close(loopfd);
}

static long syz_mount_image(volatile long fsarg, volatile long dir,
                            volatile long flags, volatile long optsarg,
                            volatile long change_dir,
                            volatile unsigned long size, volatile long image)
{
  unsigned char* data = (unsigned char*)image;
  int res = -1, err = 0, need_loop_device = !!size;
  char* mount_opts = (char*)optsarg;
  char* target = (char*)dir;
  char* fs = (char*)fsarg;
  char* source = NULL;
  char loopname[64];
  if (need_loop_device) {
    int loopfd;
    memset(loopname, 0, sizeof(loopname));
    snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid);
    if (setup_loop_device(data, size, loopname, &loopfd) == -1)
      return -1;
    close(loopfd);
    source = loopname;
  }
  mkdir(target, 0777);
  char opts[256];
  memset(opts, 0, sizeof(opts));
  if (strlen(mount_opts) > (sizeof(opts) - 32)) {
  }
  strncpy(opts, mount_opts, sizeof(opts) - 32);
  if (strcmp(fs, "iso9660") == 0) {
    flags |= MS_RDONLY;
  } else if (strncmp(fs, "ext", 3) == 0) {
    bool has_remount_ro = false;
    char* remount_ro_start = strstr(opts, "errors=remount-ro");
    if (remount_ro_start != NULL) {
      char after = *(remount_ro_start + strlen("errors=remount-ro"));
      char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1);
      has_remount_ro = ((before == '\0' || before == ',') &&
                        (after == '\0' || after == ','));
    }
    if (strstr(opts, "errors=panic") || !has_remount_ro)
      strcat(opts, ",errors=continue");
  } else if (strcmp(fs, "xfs") == 0) {
    strcat(opts, ",nouuid");
  }
  res = mount(source, target, fs, flags, opts);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  res = open(target, O_RDONLY | O_DIRECTORY);
  if (res == -1) {
    err = errno;
    goto error_clear_loop;
  }
  if (change_dir) {
    res = chdir(target);
    if (res == -1) {
      err = errno;
    }
  }

error_clear_loop:
  if (need_loop_device)
    reset_loop_device(loopname);
  errno = err;
  return res;
}

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 (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);
}

static void setup_common()
{
  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)) {
  }
}

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  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 = 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);
  setup_common();
  initialize_vhci();
  sandbox_common();
  drop_caps();
  initialize_netdevices_init();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  initialize_netdevices();
  sandbox_common_mount_tmpfs();
  setup_binderfs();
  loop();
  exit(1);
}

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  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, umount_flags) == 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, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int 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, umount_flags))
          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);
  for (int i = 0; i < 100; i++) {
    if (waitpid(-1, status, WNOHANG | __WALL) == pid)
      return;
    usleep(1000);
  }
  DIR* dir = opendir("/sys/fs/fuse/connections");
  if (dir) {
    for (;;) {
      struct dirent* ent = readdir(dir);
      if (!ent)
        break;
      if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0)
        continue;
      char abort[300];
      snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort",
               ent->d_name);
      int fd = open(abort, O_WRONLY);
      if (fd == -1) {
        continue;
      }
      if (write(fd, abort, 1) < 0) {
      }
      close(fd);
    }
    closedir(dir);
  } else {
  }
  while (waitpid(-1, status, __WALL) != pid) {
  }
}

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

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

static void close_fds()
{
  for (int fd = 3; fd < MAX_FDS; fd++)
    close(fd);
}

static const char* setup_usb()
{
  if (chmod("/dev/raw-gadget", 0666))
    return "failed to chmod /dev/raw-gadget";
  return NULL;
}

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

static const char* setup_802154()
{
  const char* error = NULL;
  int sock_generic = -1;
  int sock_route = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock_route == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) failed";
    goto fail;
  }
  sock_generic = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock_generic == -1) {
    error = "socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) failed";
    goto fail;
  }
  {
    int nl802154_family_id =
        netlink_query_family_id(&nlmsg, sock_generic, "nl802154", true);
    if (nl802154_family_id < 0) {
      error = "netlink_query_family_id failed";
      goto fail;
    }
    for (int i = 0; i < 2; i++) {
      char devname[] = "wpan0";
      devname[strlen(devname) - 1] += i;
      uint64_t hwaddr = 0xaaaaaaaaaaaa0002 + (i << 8);
      uint16_t shortaddr = 0xaaa0 + i;
      int ifindex = if_nametoindex(devname);
      struct genlmsghdr genlhdr;
      memset(&genlhdr, 0, sizeof(genlhdr));
      genlhdr.cmd = NL802154_CMD_SET_SHORT_ADDR;
      netlink_init(&nlmsg, nl802154_family_id, 0, &genlhdr, sizeof(genlhdr));
      netlink_attr(&nlmsg, NL802154_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
      netlink_attr(&nlmsg, NL802154_ATTR_SHORT_ADDR, &shortaddr,
                   sizeof(shortaddr));
      if (netlink_send(&nlmsg, sock_generic) < 0) {
        error = "NL802154_CMD_SET_SHORT_ADDR failed";
        goto fail;
      }
      netlink_device_change(&nlmsg, sock_route, devname, true, 0, &hwaddr,
                            sizeof(hwaddr), 0);
      if (i == 0) {
        netlink_add_device_impl(&nlmsg, "lowpan", "lowpan0", false);
        netlink_done(&nlmsg);
        netlink_attr(&nlmsg, IFLA_LINK, &ifindex, sizeof(ifindex));
        if (netlink_send(&nlmsg, sock_route) < 0) {
          error = "netlink: adding device lowpan0 type lowpan link wpan0";
          goto fail;
        }
      }
    }
  }
fail:
  close(sock_route);
  close(sock_generic);
  return error;
}

#define FUSE_MIN_READ_BUFFER 8192
enum fuse_opcode {
  FUSE_LOOKUP = 1,
  FUSE_FORGET = 2,
  FUSE_GETATTR = 3,
  FUSE_SETATTR = 4,
  FUSE_READLINK = 5,
  FUSE_SYMLINK = 6,
  FUSE_MKNOD = 8,
  FUSE_MKDIR = 9,
  FUSE_UNLINK = 10,
  FUSE_RMDIR = 11,
  FUSE_RENAME = 12,
  FUSE_LINK = 13,
  FUSE_OPEN = 14,
  FUSE_READ = 15,
  FUSE_WRITE = 16,
  FUSE_STATFS = 17,
  FUSE_RELEASE = 18,
  FUSE_FSYNC = 20,
  FUSE_SETXATTR = 21,
  FUSE_GETXATTR = 22,
  FUSE_LISTXATTR = 23,
  FUSE_REMOVEXATTR = 24,
  FUSE_FLUSH = 25,
  FUSE_INIT = 26,
  FUSE_OPENDIR = 27,
  FUSE_READDIR = 28,
  FUSE_RELEASEDIR = 29,
  FUSE_FSYNCDIR = 30,
  FUSE_GETLK = 31,
  FUSE_SETLK = 32,
  FUSE_SETLKW = 33,
  FUSE_ACCESS = 34,
  FUSE_CREATE = 35,
  FUSE_INTERRUPT = 36,
  FUSE_BMAP = 37,
  FUSE_DESTROY = 38,
  FUSE_IOCTL = 39,
  FUSE_POLL = 40,
  FUSE_NOTIFY_REPLY = 41,
  FUSE_BATCH_FORGET = 42,
  FUSE_FALLOCATE = 43,
  FUSE_READDIRPLUS = 44,
  FUSE_RENAME2 = 45,
  FUSE_LSEEK = 46,
  FUSE_COPY_FILE_RANGE = 47,
  FUSE_SETUPMAPPING = 48,
  FUSE_REMOVEMAPPING = 49,
  CUSE_INIT = 4096,
  CUSE_INIT_BSWAP_RESERVED = 1048576,
  FUSE_INIT_BSWAP_RESERVED = 436207616,
};
struct fuse_in_header {
  uint32_t len;
  uint32_t opcode;
  uint64_t unique;
  uint64_t nodeid;
  uint32_t uid;
  uint32_t gid;
  uint32_t pid;
  uint32_t padding;
};
struct fuse_out_header {
  uint32_t len;
  uint32_t error;
  uint64_t unique;
};
struct syz_fuse_req_out {
  struct fuse_out_header* init;
  struct fuse_out_header* lseek;
  struct fuse_out_header* bmap;
  struct fuse_out_header* poll;
  struct fuse_out_header* getxattr;
  struct fuse_out_header* lk;
  struct fuse_out_header* statfs;
  struct fuse_out_header* write;
  struct fuse_out_header* read;
  struct fuse_out_header* open;
  struct fuse_out_header* attr;
  struct fuse_out_header* entry;
  struct fuse_out_header* dirent;
  struct fuse_out_header* direntplus;
  struct fuse_out_header* create_open;
  struct fuse_out_header* ioctl;
};
static int fuse_send_response(int fd, const struct fuse_in_header* in_hdr,
                              struct fuse_out_header* out_hdr)
{
  if (!out_hdr) {
    return -1;
  }
  out_hdr->unique = in_hdr->unique;
  if (write(fd, out_hdr, out_hdr->len) == -1) {
    return -1;
  }
  return 0;
}
static volatile long syz_fuse_handle_req(volatile long a0, volatile long a1,
                                         volatile long a2, volatile long a3)
{
  struct syz_fuse_req_out* req_out = (struct syz_fuse_req_out*)a3;
  struct fuse_out_header* out_hdr = NULL;
  char* buf = (char*)a1;
  int buf_len = (int)a2;
  int fd = (int)a0;
  if (!req_out) {
    return -1;
  }
  if (buf_len < FUSE_MIN_READ_BUFFER) {
    return -1;
  }
  int ret = read(fd, buf, buf_len);
  if (ret == -1) {
    return -1;
  }
  if ((size_t)ret < sizeof(struct fuse_in_header)) {
    return -1;
  }
  const struct fuse_in_header* in_hdr = (const struct fuse_in_header*)buf;
  if (in_hdr->len > (uint32_t)ret) {
    return -1;
  }
  switch (in_hdr->opcode) {
  case FUSE_GETATTR:
  case FUSE_SETATTR:
    out_hdr = req_out->attr;
    break;
  case FUSE_LOOKUP:
  case FUSE_SYMLINK:
  case FUSE_LINK:
  case FUSE_MKNOD:
  case FUSE_MKDIR:
    out_hdr = req_out->entry;
    break;
  case FUSE_OPEN:
  case FUSE_OPENDIR:
    out_hdr = req_out->open;
    break;
  case FUSE_STATFS:
    out_hdr = req_out->statfs;
    break;
  case FUSE_RMDIR:
  case FUSE_RENAME:
  case FUSE_RENAME2:
  case FUSE_FALLOCATE:
  case FUSE_SETXATTR:
  case FUSE_REMOVEXATTR:
  case FUSE_FSYNCDIR:
  case FUSE_FSYNC:
  case FUSE_SETLKW:
  case FUSE_SETLK:
  case FUSE_ACCESS:
  case FUSE_FLUSH:
  case FUSE_RELEASE:
  case FUSE_RELEASEDIR:
  case FUSE_UNLINK:
  case FUSE_DESTROY:
    out_hdr = req_out->init;
    if (!out_hdr) {
      return -1;
    }
    out_hdr->len = sizeof(struct fuse_out_header);
    break;
  case FUSE_READ:
    out_hdr = req_out->read;
    break;
  case FUSE_READDIR:
    out_hdr = req_out->dirent;
    break;
  case FUSE_READDIRPLUS:
    out_hdr = req_out->direntplus;
    break;
  case FUSE_INIT:
    out_hdr = req_out->init;
    break;
  case FUSE_LSEEK:
    out_hdr = req_out->lseek;
    break;
  case FUSE_GETLK:
    out_hdr = req_out->lk;
    break;
  case FUSE_BMAP:
    out_hdr = req_out->bmap;
    break;
  case FUSE_POLL:
    out_hdr = req_out->poll;
    break;
  case FUSE_GETXATTR:
  case FUSE_LISTXATTR:
    out_hdr = req_out->getxattr;
    break;
  case FUSE_WRITE:
  case FUSE_COPY_FILE_RANGE:
    out_hdr = req_out->write;
    break;
  case FUSE_FORGET:
  case FUSE_BATCH_FORGET:
    return 0;
  case FUSE_CREATE:
    out_hdr = req_out->create_open;
    break;
  case FUSE_IOCTL:
    out_hdr = req_out->ioctl;
    break;
  default:
    return -1;
  }
  return fuse_send_response(fd, in_hdr, out_hdr);
}

#define SWAP_FILE "./swap-file"
#define SWAP_FILE_SIZE (128 * 1000 * 1000)

static const char* setup_swap()
{
  swapoff(SWAP_FILE);
  unlink(SWAP_FILE);
  int fd = open(SWAP_FILE, O_CREAT | O_WRONLY | O_CLOEXEC, 0600);
  if (fd == -1)
    return "swap file open failed";
  fallocate(fd, FALLOC_FL_ZERO_RANGE, 0, SWAP_FILE_SIZE);
  close(fd);
  char cmdline[64];
  sprintf(cmdline, "mkswap %s", SWAP_FILE);
  if (runcmdline(cmdline))
    return "mkswap failed";
  if (swapon(SWAP_FILE, SWAP_FLAG_PREFER) == 1)
    return "swapon failed";
  return NULL;
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; 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();
      close_fds();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[7] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  res = syscall(__NR_socket, /*domain=*/0x18ul, /*type=*/1ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  *(uint16_t*)0x200001c0 = 0x18;
  *(uint32_t*)0x200001c2 = 0;
  *(uint16_t*)0x200001c6 = 9;
  memset((void*)0x200001c8, 187, 6);
  memcpy((void*)0x200001ce, "macvlan0\000\000\000\000\000\000\000\000", 16);
  syscall(__NR_connect, /*fd=*/r[0], /*addr=*/0x200001c0ul, /*addrlen=*/0x1eul);
  res = syscall(__NR_socket, /*domain=*/0x18ul, /*type=*/1ul, /*proto=*/0);
  if (res != -1)
    r[1] = res;
  *(uint16_t*)0x20000400 = 0x18;
  *(uint32_t*)0x20000402 = 0;
  *(uint16_t*)0x20000406 = 2;
  memset((void*)0x20000408, 170, 5);
  *(uint8_t*)0x2000040d = 0xa;
  memcpy((void*)0x2000040e,
         "lo\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16);
  syscall(__NR_connect, /*fd=*/r[1], /*addr=*/0x20000400ul, /*addrlen=*/0x1eul);
  *(uint32_t*)0x20000180 = 1;
  *(uint32_t*)0x20000184 = 0;
  *(uint64_t*)0x20000188 = 0;
  *(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 = 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;
  syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000180ul, /*size=*/0x94ul);
  memcpy((void*)0x20000040, "/dev/ppp\000", 9);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000040ul,
                /*flags=*/0ul, /*mode=*/0ul);
  if (res != -1)
    r[2] = res;
  syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x40047438, /*arg=*/0x20000180ul);
  res = syscall(__NR_dup, /*oldfd=*/r[2]);
  if (res != -1)
    r[3] = res;
  *(uint32_t*)0x200002c0 = 2;
  syscall(__NR_ioctl, /*fd=*/r[3], /*cmd=*/0x40047435, /*arg=*/0x200002c0ul);
  syscall(__NR_ioctl, /*fd=*/r[1], /*cmd=*/0x80047437, /*arg=*/0x20001f00ul);
  memcpy((void*)0x20002040, "./file0\000", 8);
  syscall(__NR_mkdirat, /*fd=*/0xffffff9c, /*path=*/0x20002040ul, /*mode=*/0ul);
  memcpy((void*)0x20000300, "/dev/fuse\000", 10);
  res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0x20000300ul,
                /*flags=*/2ul, /*mode=*/0ul);
  if (res != -1)
    r[4] = res;
  memcpy((void*)0x200020c0, "./file0\000", 8);
  syscall(__NR_mount, /*src=*/0ul, /*dst=*/0x200020c0ul, /*type=*/0ul,
          /*flags=*/0ul, /*opts=*/0x200003c0ul);
  syscall(__NR_read, /*fd=*/r[4], /*buf=*/0ul, /*len=*/0ul);
  memcpy(
      (void*)0x20008400,
      "\x92\x75\x6f\x43\xb3\x1f\xfe\x54\x27\x88\xef\x58\x6b\x7c\x5a\x34\x44\x24"
      "\xe3\xac\xac\x25\x90\xbe\x6b\xbe\x37\xad\xfa\xce\x4a\x8f\x2e\x53\x4f\xfe"
      "\x76\xa8\x3a\x93\xf0\xb3\x68\x0a\x72\xfd\xdf\xde\x83\xf9\x6d\x01\x98\x23"
      "\x84\xe8\xd6\x89\x21\x9c\xb9\x66\x9b\x14\xdb\xaa\x1b\x79\x9f\x82\xea\x1f"
      "\xc9\x26\x12\x6a\x41\x63\x61\x8e\x16\xd4\xf9\x41\x43\xa4\xe0\xf2\x7c\x44"
      "\xfc\xef\x39\x20\xa0\xb3\x80\x5e\xd4\xe7\x80\x98\xd8\x68\x9c\xc7\x79\x1b"
      "\xd8\x66\x48\x07\x07\x18\xd2\x38\x66\x43\x32\x94\x8d\x87\x86\x6c\x8d\x25"
      "\x90\xfc\x0f\x01\x7f\x98\x53\xab\xd9\xed\x60\xb9\x9f\x1a\xa6\xae\x2d\xbd"
      "\x24\xab\x6d\xbc\xeb\xdb\x05\x52\x46\x81\x5a\xce\x14\x7c\xc5\x0f\xa3\xb2"
      "\x86\x11\x48\xfc\xda\x37\x4d\x5b\x20\x3e\x51\xd7\x2c\x45\xe4\xdd\xe3\xe9"
      "\xee\x9a\x47\xff\xe4\x58\xba\xf7\xbb\x49\x03\x51\x35\xa8\x19\x4a\xa1\xf0"
      "\xa8\x3f\xa2\xab\xed\x56\x39\x8f\x90\xda\xff\x67\x96\x34\x61\x94\x53\xf5"
      "\x33\xf2\x25\x83\xa6\xe0\xa4\xdc\x09\xe9\xde\x46\x68\x4d\x5e\x01\x36\xe2"
      "\x29\x51\x0f\x37\x02\xcf\x3a\x4c\xd0\x06\x5d\x3e\x5d\x3c\x41\x9e\x38\xa8"
      "\x0b\x07\x0c\xa5\x50\x10\xe0\x82\xa9\xc5\x10\xfd\x18\xcc\x0b\x26\xbb\x5e"
      "\x8e\x45\x9e\x74\x7b\xef\xbc\x5c\x6b\x60\xac\xe8\x0b\xf4\x14\x17\xb7\xb7"
      "\x8c\xf5\x7e\x5b\x39\x84\xf0\xcd\xdd\xc6\x15\xc5\xe0\x00\x04\x54\xd3\xf4"
      "\xa1\x96\xfb\x6d\x18\xaa\x62\x9c\xf0\xb0\x24\x5f\x95\xba\x95\x8d\x86\xdc"
      "\x17\x56\x16\xf8\xcd\x3a\xc4\x73\x05\x7d\xc3\xa5\xff\x71\x07\x97\x33\x26"
      "\x35\x01\x07\xf4\x46\x8e\x7e\xcd\x48\xd6\x89\xb8\x2c\x12\xd2\x2a\xe5\xf1"
      "\x85\x83\x02\xa1\xb4\xcf\xde\x8f\xd3\x47\xa9\x9d\xdc\xde\x40\xd1\xc4\x9d"
      "\x9b\x50\x99\xfb\xcc\xf0\x9e\x78\x22\x12\xbe\x4b\x2c\xe3\x6a\x2b\xc3\xc9"
      "\xee\x79\x4a\xbf\xfe\x72\xa5\x50\x1e\x6c\x4f\x3f\x7f\x68\xb7\x47\x61\xff"
      "\xd6\x62\x06\x09\x22\x4a\x3b\xf1\x1f\x65\x5d\xad\xb5\xc8\xa5\x81\x3b\x02"
      "\xfb\x46\x83\x0e\x9a\xc6\x82\x5f\x5d\x0e\x89\x91\x03\x52\xeb\x3a\x58\xc0"
      "\xdd\x82\xd0\x94\xf9\x4d\xd2\xc8\x56\x66\xf6\x84\xa8\xf4\x37\xbb\xd0\xe6"
      "\x6b\x9f\x4d\x36\x61\x17\xb6\x7a\x05\x4d\x21\x2c\x4f\xbc\x28\x78\x48\xcb"
      "\x05\x78\x39\x13\x35\xd5\xd6\x16\xb1\x4d\x99\xa2\xe3\xdf\x8e\x8a\x15\x2d"
      "\x5d\xe9\x9b\xce\xfc\xaa\xb5\xbb\x5c\xc7\x1f\x3d\xdd\x66\xb3\x79\xc1\x04"
      "\x64\x8e\x19\x0e\x0b\x28\xa1\x80\xd3\xae\xcc\x54\x23\x57\x5d\x4b\xa7\xdb"
      "\xf3\x12\x15\xc7\x17\xda\x7b\x87\xdd\x45\x4b\x6e\xfc\xd3\x6c\x91\xaa\xa6"
      "\x31\x12\x7f\x5b\xd8\x87\x23\xd2\x21\x75\x2f\x10\x2b\xc0\xc7\xac\x6c\x5c"
      "\x7a\x1a\xd6\x74\x7a\xf4\x0d\x01\xb6\xd3\x9e\xab\x7b\x0e\x12\x92\xb4\x46"
      "\x83\xc5\x86\x38\x6a\xd0\x0a\xcf\x60\xfb\x8f\x9b\xac\x55\x1a\x6e\xb5\xba"
      "\xb7\x31\x7b\x5d\x89\xf6\x4d\xb1\x0b\xd9\x01\x8d\xfa\x6d\x65\xd9\x38\x62"
      "\xe8\x51\xaf\xbc\x30\xfd\x70\xfe\x5f\x0d\xe3\x22\x46\x20\x45\x17\x72\x31"
      "\x85\x2c\xa8\x0e\x4e\x78\xda\x4f\xea\x0c\x79\xba\x35\x43\x33\x02\x6c\x8b"
      "\xc7\x7d\x30\x8a\x8d\x25\x6a\x19\xec\x45\xd2\x08\x8c\x19\x66\x91\xd3\xf9"
      "\xaa\xc2\x8d\xed\x36\x00\x4a\x65\xee\x1c\xe4\x9b\xa9\x59\x9c\xee\xe8\x45"
      "\x34\xbb\x61\xd0\x2d\x04\xa6\x73\x2f\x1e\x27\xd7\x29\x62\xf7\x4b\x59\xf3"
      "\x52\x2b\xf8\x44\xc5\x02\x29\x86\xd5\x59\x34\xe4\x8b\x86\x81\xb7\xf5\xb7"
      "\x53\x23\x91\x44\x8c\xae\xef\x00\x31\x5d\x28\x32\x0a\x46\xd8\xbd\x78\x13"
      "\x54\x4e\x1e\x4b\xf9\x94\xe1\x4a\x51\x9c\x26\x54\xff\x20\xb4\x2b\xdb\x69"
      "\xc2\x62\x89\x7e\x28\xec\xa5\x28\xf0\x99\x98\x40\xb0\x0e\xd8\x25\x65\x97"
      "\xd2\x7c\xfc\x20\xd7\x1d\x5f\x40\xd0\xbb\xca\x75\x9f\x75\x94\xc6\x03\x4a"
      "\xa1\xe1\x6a\x84\xed\x15\x2f\xad\x0f\xdc\x1c\x30\x3a\x7f\x61\x22\x57\x12"
      "\x71\x4f\x82\x3a\xfc\x5e\xa2\x41\xd4\x82\xd3\x58\x57\x59\x62\x3a\xf8\xc9"
      "\x7c\xa6\xa8\x4a\x20\x33\xb3\xd7\x31\x4e\xa0\xef\x7b\xa9\xb2\x88\xb3\x62"
      "\xa2\x94\xc9\x2c\x8b\x97\x36\x82\x9c\x16\xf6\x1c\x5a\x1e\xe0\x4a\xca\x96"
      "\x5d\x71\x16\x22\x92\x27\x45\x95\xea\x62\xc9\xc2\x91\x8e\x82\x79\xc9\x9f"
      "\x5d\x28\x30\xc6\x17\xc5\x82\x11\xfd\x74\x52\x33\x01\x84\xb9\x42\x8d\x5e"
      "\xc1\xd5\xcd\x75\xdd\xcc\x6d\xe3\x32\x6f\xdc\x70\xe8\x91\x10\x4b\x3b\x01"
      "\x3c\x30\xff\xcc\xfa\xf3\x30\x8d\x96\x71\xb0\x1f\x6b\x08\x0a\x93\x0d\xac"
      "\x20\x52\xc6\xf3\x98\x17\xa6\x62\x12\x1d\x90\xd4\x0d\x6a\x1f\xac\xfb\x50"
      "\xbe\xc7\xd4\x08\x03\x0b\x6d\x0a\xe3\xe7\x44\xf3\xbc\xc3\x27\xc3\x5d\xc4"
      "\x3c\xf8\x6b\x74\x3d\xb7\x8f\xf2\xe5\x93\xb1\x99\x23\x23\x5e\xd6\x46\x7f"
      "\x29\x9b\x08\x71\x8f\xe1\x84\x0c\x16\xa7\x48\x93\x5d\xff\x94\x11\x50\xfb"
      "\x08\xb3\x05\x73\xb3\x7b\xf9\xaf\x5c\x86\xcc\x8d\x9e\x22\x9a\x83\x2e\x4e"
      "\xf2\x5e\xc9\x1f\x71\x12\x0f\x2b\x3e\x90\x62\x48\x59\x76\xc2\x80\xa2\xd1"
      "\x72\x38\x60\x29\xe2\xf2\xa4\x80\x11\x97\xfc\xa0\xa1\x35\x14\xed\xac\xf5"
      "\xdd\xba\xc5\xa6\x2e\x8b\xb1\x3d\xd1\x57\x26\x57\xa8\x21\xa8\x73\x92\x97"
      "\xf7\x2e\x29\x23\x9d\x1c\xdd\xdf\x3e\x30\xcb\xe9\xaf\x31\x41\xf2\x27\x5e"
      "\xe4\xae\x85\xd8\x6e\xc8\x88\xfe\x9a\x67\x51\xf2\x52\x05\x7e\x95\xb8\xbe"
      "\xb0\x55\xe2\x76\x43\x95\x81\xaf\xee\x93\xcd\x44\xf1\xe9\x2f\x70\xe5\xf7"
      "\x25\x45\x1d\x3a\xb6\x62\x91\x8f\xfb\xb1\x26\x95\x09\xfb\xd5\x11\xe9\x5a"
      "\x00\xec\x71\x7f\x9d\x60\xd6\x43\x86\x4a\xbd\x6a\xd1\xcc\x4d\xd7\xf9\x33"
      "\x37\x9a\x60\x78\xa8\x6c\x21\x58\xdb\x80\x76\xe7\xb6\x60\x36\x6f\xca\x7b"
      "\x1c\x46\xd0\x9d\x2c\x8e\x67\xa6\x49\x4b\xfb\x4c\x2c\x67\x50\xe7\x65\x93"
      "\x89\x5b\x5e\x2b\x2b\xc7\x80\x93\x84\x0c\x3c\x4a\x80\x78\x26\xbc\x27\x50"
      "\xa9\x6b\x4e\x1d\xd5\xb8\x2b\x49\x2b\xb2\x21\x55\x18\xc9\x20\x64\xd1\x76"
      "\x3c\x37\x13\x26\x04\xe5\x2e\x73\xfa\xc3\xf4\x51\x1f\x79\x17\x53\xae\xec"
      "\xfb\xb1\x98\x16\xe0\xda\x7a\x1b\xfb\xea\x9e\xea\xa0\xf2\x56\xea\xed\xcb"
      "\x11\x9a\x61\xf7\xd0\xea\x0f\x5c\xd4\x96\x9d\x45\xcb\x01\x48\x00\xf2\xc8"
      "\x88\xd5\xc2\x21\x7c\xf0\xf6\x9a\x75\x07\x77\x98\x83\xb5\x73\x52\xbb\x88"
      "\x83\xcc\x58\x48\x91\x95\x0d\x6e\x79\x25\x37\x07\x4f\x4f\xc4\x33\x7a\xa1"
      "\x9b\x9b\xf6\x0e\x18\xed\xd9\x39\xd2\x89\xfb\x4a\x6b\x7a\xa6\xc6\x6d\xa2"
      "\x07\x74\xe2\x49\xca\x4f\x77\x9d\x3c\x91\x0b\x1a\x9a\x8e\x4c\x38\xaf\x6a"
      "\xde\xcc\x87\xd5\x48\x1d\x18\x1f\xd6\x60\x23\xff\xff\x24\x6f\x4e\x25\x56"
      "\xb2\x18\xfe\x81\x10\xac\xeb\xe2\x0b\x16\x75\xf1\xde\x6f\x26\x5b\x6d\x1d"
      "\x85\x14\xa5\x35\x22\x39\x6b\xf0\xe2\xf2\xb1\x53\xc4\x98\xe4\x8b\x36\xd1"
      "\x6f\x8b\x9b\xd5\x6f\x45\xd7\xf5\xb9\x39\x7d\x7f\x13\x39\x11\x7a\x17\x6d"
      "\x0b\xad\x0b\x68\xe8\x00\x68\x24\x16\xd3\xe1\x8f\xe2\x19\x7c\x7f\x8d\xc2"
      "\x06\x00\xfe\xb9\x5c\xc6\xba\x86\xad\x47\xf1\x13\xe1\x59\xbd\x43\x89\xe3"
      "\x0e\xab\x28\x74\xbd\x27\xee\xbc\x56\x02\x0c\x4d\xab\x99\x73\xb1\x3f\x3e"
      "\x82\xaa\x62\xa7\xe0\xa1\x51\xd7\x3d\xe4\x8c\xb8\x11\xe3\x2b\xe6\x3f\xfd"
      "\x30\x3f\x5a\x6e\xa6\xf0\x97\xed\x76\x3f\xbf\x36\xc4\x30\x82\x1e\x45\x11"
      "\x46\xde\x79\x92\x23\x48\x35\x4c\xe2\x85\xaf\x09\x97\xbf\x3c\x66\xe6\xef"
      "\x02\x94\x2e\x24\xb8\xf1\xcc\xdd\x54\x2f\x09\xcf\xe6\x5c\x0d\xa0\x09\x4c"
      "\x0b\x5f\xd2\x6b\xbc\x06\x15\x38\xb4\x1e\x5e\xd2\xcb\xb3\x90\xee\x29\xb1"
      "\x0a\x4b\x7a\x69\x60\x09\xe1\xb5\xb8\x6c\x44\xc0\xa5\x61\xa2\x57\xc1\x54"
      "\x15\xfe\xae\xb1\x43\x3e\xa2\x75\xed\x6e\x4b\x22\x85\x03\xfe\x71\xee\x59"
      "\x42\x66\x51\x64\xfa\xae\xd6\x69\x71\x12\x20\x6b\xe0\xfe\x78\x63\xae\xbd"
      "\x4b\xbe\x95\x1d\x5d\xea\x1d\xa2\x94\xdb\xa0\x79\x31\x96\x38\x5f\x4d\x51"
      "\x41\xc9\xd6\xc4\xb0\xfa\x22\xb2\xe2\x00\xcf\xb7\x0b\x52\xac\xa3\x16\x55"
      "\xe7\x1e\x5a\x57\x6c\xcb\x8c\xcb\x5b\x13\x64\x74\x8a\xa9\x81\xed\xbb\x81"
      "\xa8\x13\xb1\xae\xbc\x67\xbe\x1f\x76\x19\xe7\xe1\x97\x62\x2d\x98\x12\x80"
      "\x42\x9f\x6c\xa5\x14\x5c\x5b\x3b\x05\xe6\xba\xce\x91\x91\xe5\xc5\x8f\xbf"
      "\x14\x0f\x71\xf5\x94\xcb\xfd\x4d\xb0\xe9\xf6\x92\x3f\x17\x58\xff\x94\x64"
      "\xa6\x1a\x72\x0a\x5d\x4f\x09\xc6\x22\xc3\xce\x3f\x5d\x0d\x3a\x1d\x19\x11"
      "\x11\x16\x81\x08\xf4\x1f\x12\xb1\x6e\x9e\xaf\x36\x17\xc3\x53\x71\x5c\xd3"
      "\x52\x60\x56\x0c\xbf\xd0\x55\x5d\x51\xce\x5c\x40\xbb\xdb\x7c\x95\xce\xae"
      "\xad\xad\xb8\x90\x29\x74\xde\x50\xb0\x86\x33\x48\x18\x38\x64\xf5\xea\x68"
      "\x2e\x67\x82\x86\xa0\x6a\x6f\x39\x6a\xf2\x9a\x7c\x7f\xb3\x3a\x35\x79\xe2"
      "\x58\x35\x96\x36\x12\xf3\xc0\xd4\xcf\x36\x9d\x85\x95\x9a\x0a\xde\xda\x94"
      "\xd3\x58\x24\x05\x0e\x6f\xba\x7f\x83\xf9\x08\x67\x58\x3f\x71\x3d\x77\x83"
      "\x32\x3c\x70\x10\xe9\x4c\x9b\xe3\x31\xf8\x60\xdb\x39\x5d\xbd\xe6\xfa\xce"
      "\x5b\xfd\xb6\x16\xfc\xef\xa9\xc6\xb0\x1f\x69\x63\xda\xa8\x40\xa3\x1f\xf5"
      "\x54\xa4\x58\xc0\xc5\x0c\xb5\xe0\x9f\x91\xf5\x4f\x63\x23\x45\x89\xde\xca"
      "\xf4\x5b\xbf\xba\xef\x0d\xcb\xff\x4a\xe6\xe6\x5c\xa2\x6a\x53\x02\x61\xc4"
      "\x91\xef\x8e\xb9\xa8\x55\xa1\xd7\x46\x33\x91\xc9\xb6\x6b\xe9\x6c\xf2\x4c"
      "\x3c\x32\x1e\xe5\xa5\xbd\xc8\x57\xf6\x0b\x58\x26\x83\xc6\xae\x1e\x37\x75"
      "\xb6\x2a\x9f\x19\xff\x8f\xa5\x13\x80\xca\x8a\x2a\x3c\x6d\xe7\x90\x12\xf5"
      "\x72\x7b\xa1\x20\x25\xe7\xe6\x72\x3a\x23\xa8\x1e\x06\x7c\xa6\xe5\x4c\x7b"
      "\x38\xff\x64\x88\x0d\x23\x5d\x21\xe7\xee\x52\x58\x95\x3d\xcb\xf9\xe2\xa9"
      "\x62\xf0\x06\xca\x4f\xfe\x87\x08\x59\x24\x2c\x85\x0c\xba\xe4\x22\x2b\x3b"
      "\x72\xc4\xf8\x69\x34\x37\x9b\xa2\xea\xd1\xdc\xde\x90\x62\x41\xb9\x94\xd9"
      "\x5c\x88\x35\x5a\xf5\xa9\xa3\x0a\xce\x9c\x93\x3a\x69\x42\xf3\x41\xad\x22"
      "\x1d\xd8\x25\x84\x6a\x8f\xd4\x4c\x03\xe2\xea\xa9\x31\x1c\x26\xe1\x5a\x1b"
      "\xd7\xcb\xba\x96\x1a\x22\xef\x23\xd7\xeb\xba\x0e\x34\xce\xc5\xef\x09\xb1"
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      "\x4b\xde\x5e\x07\x89\x85\x02\x0d\x4a\xb1\xe4\xc8\x74\x92\xe7\x6b\x7e\x6f"
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      "\x90\xbe\xad\xae\x30\xff\xc0\xb2\xb6\x14\x38\x0f\x1c\x2c\xc5\x51\xa4\x45"
      "\x65\x20\x9d\xb3\x51\x6b\xe3\x79\xef\x56\x6a\xb0\x0c\x67\x3f\xd8\xaa\xee"
      "\xec\xdc\xf1\x16\x8c\x19\x60\xe9\xa4\x77\xb9\xe1\x37\x57\x49\x8a\x44\xff"
      "\x08\x93\x51\xd1\xf2\x7a\xbf\x9f\xd7\x68\x16\xf9\x24\x50\x46\x47\xd1\x24"
      "\x77\x15\xca\x86\x1e\xbe\x62\x41\x72\xc3\x22\x14\x6d\x66\xeb\x2b\x24\x7f"
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      "\xf9\xec\xc1\x2d\xcd\x89\x9a\xbe\x0f\x3c\x7f\x16\xb4\x68\x68\x01\xc0\xc0"
      "\xa9\x49\xaa\x26\xbe\xd5\x7d\xf5\x6f\x2b\xc5\x4e\xf1\x9a\xf7\xfc\xbc\x7b"
      "\x0d\x69\x10\x75\xf4\x2a\x4a\x67\xac\xf9\x80\xb5\x68\xac\xb2\x34\x2f\x42"
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      "\x94\x2d\x26\xf6\x37\xe1\xc4\x04\x1b\x13\x96\x59\xd2\x46\x2a\x68\x68\x0b"
      "\xb0\x43\x87\xa3\xb3\x99\xe3\x96\xb9\xfe\x74\xde\x10\x35\x61\x25\xfa\x47"
      "\xd0\xa2\x08\x27\x37\x0c\xbf\x36\xa7\x9b\x6f\xff\xad\xe9\x1c\x43\x9d\xd6"
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      "\xde\x7d\x70\xad\x9b\x07\x57\x30\x0a\x2d\xde\x77\xab\xaf\xf4\xf6\x3a\x03"
      "\x03\x85\x35\x89\xd4\x4e\xfa\x96\x8e\x10\xd3\x65\x61\xf0\x44\x08\xad\x0c"
      "\xc2\x27\xfc\x6b\x2f\x90\x4c\xea\xd1\x89\xa0\xfc\xca\x9b\x2e\x6c\xbd\xe5"
      "\x49\x86\x52\xe0\xb3\xbc\x9d\x8b\x79\x21\x47\x44\x03\x71\x8f\xeb\x5c\xc7"
      "\x50\xdc\x70\xf5\xa9\xb1\xa0\xae\x2c\x64\x20\x15\xb6\xa1\xa8\xab\x05\x72"
      "\x18\x2b\x4e\x39\xe0\xc8\x69\xcb\xdc\x60\xc9\x46\x5f\x5d\x56\x4d\x18\xba"
      "\x2f\x5b\x3b\xc3\xe0\x5a\x45\x87\x44\x07\x74\x30\xc5\xea\x03\x1e\xe0\x2d"
      "\xd8\xf0\xa6\x5d\x7d\xd8\xd9\x0d\xd9\xb8\x71\x7f\x77\xd2\x02\x23\x9a\x57"
      "\x78\x71\x94\x23\xfb\x2a\xec\x7c\xa8\x6e\xb0\x7c\x39\xde\x65\xa3\x4b\x98"
      "\x8d\x65\x37\x7a\x74\x73\xe9\x14\x5f\x16\xd7\x95\x93\xe9\x69\x03\x33\x0b"
      "\xbf\x3a\x80\x24\xfc\x15\x51\x9d\x9b\xaa\x0f\xae\x20\x18\x78\x6f\x4b\x18"
      "\x46\xfc\xa3\x55\xff\x0f\xcc\xf6\x5c\xcc\xad\x18\x96\x30\x9a\x5c\xcf\x20"
      "\x56\xdd\x54\x2c\x92\x98\x50\xcc\x91\xcd\x65\x59\x62\x36\x0f\xe3\x16\x55"
      "\x7a\xb3\xfb\x37\x83\x28\xf7\x7a\x07\xd9\xda\x24\x44\x7d\x3f\xa2\x02\x0b"
      "\x38\x2e\xd2\xe8\x08\xec\x95\x29\xa0\x12\x73\x43\x4c\x64\xb0\xb7\xc3\x5a"
      "\x06\xa0\x19\xe4\xab\x51\xcd\xc9\xc0\xf2\x66\xab\x25\xb6\x98\x43\x38\xa0"
      "\xba\x91\x0d\x10\x60\x28\x3b\x63\x6c\x5d\x7e\x8a\x3f\x96\x9c\x1e\xe1\xc9"
      "\x9b\x54\xbb\xa7\xff\x36\x79\xfb\xee\xcb\xb7\x03\x49\xf0\x76\x48\x0a\x86"
      "\x7c\xc4\xee\x4c\xac\xae\xa3\x9c\x80\xf6\x42\x53\x35\x99\x48\x6d\x2f\xfb"
      "\x77\xb8\xc9\x10\x9a\x9d\x25\xfa\x0b\x06\xe5\x8e\xca\x76\x4f\x7d\x56\x46"
      "\x9e\xb9\x54\x70\x36\xbb\xea\x9d\x5c\x3d\x35\xb4\xc1\xfb\xc3\xd3\x9a\x37"
      "\x2c\x2b\x7a\xd1\x84\x96\x5c\xad\x38\x19\xc8\x92\x8f\x15\x88\xd0\x09\x49"
      "\x94\x9c\x0c\x4c\x93\xd3\x0a\xc7\xf6\x66\x52\x47\xc0\x10\x8b\xd8\x9d\xff"
      "\x3a\xaf\xe7\x80\xac\x66\xfe\xbf\xac\xc8\xc6\xa3\xcc\x38\x7d\x09\xda\x6d"
      "\xe7\x00\x48\x7a\x80\xe2\xc8\xd5\x6d\xf9\x4d\x7e\xbd\x3e\x1d\x9e\x06\x41"
      "\x1a\x6c\x5f\x7e\xb6\xda\x41\xc6\xf5\x29\x97\xb5\xad\x47\xba\x98\x52\x61"
      "\x10\x3f\xdf\x12\xeb\x4a\x28\x28\xb2\x48\xf6\x52\xef\x00\xb6\xab\xcc\xab"
      "\x2e\xb1\x61\xb8\x78\xb9\xdb\xc0\xaa\x91\x14\x05\xb6\xf6\x7a\xdd\xa8\x3c"
      "\x16\x18\x77\x48\xd7\xb5\x24\xff\xe6\x38\x1f\x48\x9f\x43\x2d\x59\x2e\x61"
      "\x71\xbd\x9c\xcb\x2c\xd5\x2f\x97\x71\x43\xf5\x7f\xbf\x2a\xb0\xb8\x23\xd4"
      "\x49\xae\x55\xf0\x24\x40\x97\x23\x34\x34\x4c\xda\x01\x83\x7b\x93\xaf\xa4"
      "\xf4\x6a\x2f\xde\xfe\x27\xe9\x27\x64\xcf\x95\x96\x78\x08\x46\xde\x2e\x3b"
      "\x1e\xa8\x3e\x62\xee\x43\xb1\xc0\x5a\xee\x67\x5e\x25\x36\x35\x04\xad\xdf"
      "\xaa\x68\xe7\xc5\x3e\xd6\x85\x41\x3f\x5b\xa9\x51\xf1\x20\xd0\xa6\x46\xe4"
      "\x74\x87\x2c\x81\xe5\xa8\x87\x46\x4c\x19\xf8\x46\x0a\xe8\x14\xff\xff\x24"
      "\xcb\x51\xdd\x2d\xca\x28\xd5\x97\xab\x2e\xa6\x09\x49\xf8\xdb\xbe\x67\xf2"
      "\x63\xe7\x22\xfd\xb5\x1b\xce\x4e\x32\x8a\x19\xf5\xff\x12\x18\xe1\xf6\x3b"
      "\x8d\xa6\xd4\x0d\xbd\x54\x90\x96\x44\x99\xb2\x52\x2e\xa3\x23\x31\x06\x34"
      "\x89\x3e\xad\x66\x14\x07\x96\x62\x07\xa6\x6a\xb1\x3a\xdf\xcf\x1a\x72\x5e"
      "\xd1\x43\x39\xc4\x60\x11\xc0\xe0\x40\x1f\x23\x86\xb4\x7c\xd9\xf9\x02\xfd"
      "\xf8\x4b\xc8\x5e\x74\xd3\xae\x7c\xc5\x44\xe4\xd6\x56\x70\xa5\x54\xa5\x37"
      "\x71\x2c\x6e\xe9\xf7\x51\x91\x63\x1d\x2a\x4c\x4d\xa0\x6f\xc3\x84\x23\xb1"
      "\xd5\xb8\x28\xd7\x20\x12\x35\xb2\x97\x41\x64\xf5\x2a\xa1\x6b\xee\x70\xee"
      "\x50\x92\x50\x75\x2f\x4f\xdd\x6b\x9f\x8d\x02\x19\x43\xdf\x83\x20\x68\x2a"
      "\x6f\x80\xff\x0d\x67\xab\x7a\x4c\xee\xa8\x07\xbd\x5b\x3b\x7b\x63\x80\xb0"
      "\xc7\xf0\xca\xa6\x7b\x02\x08\xba\x71\x31\x7f\x03\x55\xa3\xb7\x55\xaf\x0e"
      "\x2c\x00\x71\x86\x38\x94\x38\x61\x5d\xf8\x0b\x7b\x25\x10\x4a\x73\x3f\xc9"
      "\x06\x25\xb6\x26\x82\x19\x87\x33\xc0\xf1\x62\x5d\xfa\xa0\x8c\xf8\x1e\x3d"
      "\xf0\x43\x09\x4b\x7b\x5a\x09\x8b\x3b\x36\xf8\x03\xb5\xb0\xf1\x0a\x05\x7b"
      "\xf8\x14\xae\x35\x79\x93\x2c\x0a\x5f\x20\x89\x85\xba\xb3\xd8\x17\xf9\x75"
      "\x28\x3b\x88\x38\xae\x5c\xb7\x09\xbe\x72\xb5\x8d\xf7\x42\x5e\x05\x9f\xdb"
      "\xf4\xe0\xee\x51\xb3\xda\x01\xfe\x0b\x44\x96\x3c\x11\x96\xba\xee\x5e\xc5"
      "\x90\x9a\xd8\x0d\x9d\x16\x60\xf3\xed\xd9\x03\x74\x95\x2a\x0b\xf8\xb3\xbe"
      "\xce\x2c\x2f\x94\x45\x93\xf4\xde\x7d\xe5\xe0\x5d\xed\x09\x6b\x8f\x4f\x05"
      "\xd6\x5d\xfc\x2e\x80\x6f\x78\x22\x0d\x84\xb3\xdb\x56\x4f\xb1\x2f\x4e\x5e"
      "\x8f\x5e\xab\x31\x65\x91\xf0\x04\xe9\x37\x4c\xce\x8e\x78\x72\x63\xbc\x38"
      "\x27\xaf\xfe\x67\x93\xc1\x30\xb8\x62\x1d\x3b\xbb\x2a\x86\xfd\x87\xf0\x70"
      "\xea\x21\x71\x82\x81\xee\x7a\xec\x4b\xb3\xbb\x71\xaf\x4b\xf5\x72\x1c\xec"
      "\xd1\x39\xc4\xbe\x8c\x9d\xf4\xec\x8d\xfb\x09\xa5\xcf\x1d\x86\xa2\x5d\x39"
      "\xfa\xa9\xf0\x64\xa9\x97\xc2\x14\xf3\x34\xe4\x41\x09\x17\xfc\x3b\x4d\x67"
      "\xad\xa8\xd8\x7a\x38\xc0\xf8\x6b\x02\xbf\x65\x3d\xdd\xae\xb5\xb7\x5b\x30"
      "\x0f\x8b\xcf\xd7\x92\x85\x8b\xef\x8a\xb2\x3e\x06\x34\x21\x93\x9c\x59\x21"
      "\x29\x64\xc9\xed\x5d\xd5\x6e\x21\x5d\xb5\x8c\xef\x53\xd3\x1a\x96\x6b\xb8"
      "\xce\x4e\xd5\x62\x87\xfe\xcb\x3a\x85\xba\x43\x5e\x0b\x41\xb2\x0b\xa1\x16"
      "\x4b\x9c\x9f\x2c\x49\xfa\x0f\x7b\x17\xa8\x9e\x0e\xc4\x7e\xef\xe9\x92\xd6"
      "\x3e\xe2\x9c\x8c\x0a\x1e\xce\x26\x64\xfe\xe8\xed\xad\xd4\x36\x36\xa5\x4c"
      "\x48\x51\x9b\x4f\xcf\x55\xb0\xd9\x10\x36\x02\xb9\x24\x41\xa5\xf8\x5c\xf8"
      "\xc5\xe4\x06\xd0\xf5\x81\x5f\x8f\x37\x30\x99\x34\xbd\x78\xfb\xc2\xac\xf0"
      "\xa0\x3b\x05\x1b\x45\x28\xdb\x4f\x7c\x09\xde\x7d\x0a\xab\xaf\xca\x37\x36"
      "\xb8\x25\x9c\x81\x8c\xa3\x38\xca\x67\x54\xe0\x74\x77\x17\xc2\x79\x4d\x66"
      "\x4a\x1c\xac\xc1\xe9\xc5\x27\x64\xa3\x08\xe6\xdf\x73\xd9\x75\x63\x86\x30"
      "\xb7\x4c\xce\x6c\x49\xb1\xba\xc1\x64\x54\xe9\x68\x52\xc4\xf9\xd8\xed\x11"
      "\x8e\x86\xd2\xf1\xc8\xdc\x33\xbc\xcd\x4a\x07\xbe\x12\x8d\xb5\xe8\x0f\x56"
      "\x84\xdd\xcc\x11\x58\xe7\x44\x41\x1a\xcd\xe5\x90\xf9\x02\xf0\x98\x7c\xfb"
      "\x75\x0b\xb5\xbf\xee\xd5\x3b\xff\x07\x68\x68\x98\x6b\x56\x6d\x77\x01\xf4"
      "\x8d\xdf\xca\xcb\xd3\x25\xc8\xd9\x30\xbc\xef\x26\x71\x3b\xf6\x05\x85\xd5"
      "\xc9\x91\xe2\xa6\xcc\x33\xcc\xbc\x27\xf7\xdd\xfb\xa1\x8f\x99\x84\x97\xc2"
      "\xeb\x37\x8c\xc8\xf2\xcc\x07\xa1\xb4\xf1\x41\xc5\xe0\xfb\x6f\x52\xe1\x82"
      "\x42\xe5\x05\xbc\xf6\xdd\x20\xe3\x3a\x46\x9d\x05\x6a\x0b\x4f\xd5\xe7\x2d"
      "\x0d\xa9\xd0\xbc\xce\x1e\x2f\x9e\x9d\xc7\xd1\xc7\xb6\xcb\x0f\x36\x04\x28"
      "\x7e\xca",
      8192);
  *(uint64_t*)0x200000c0 = 0;
  *(uint64_t*)0x200000c8 = 0;
  *(uint64_t*)0x200000d0 = 0;
  *(uint64_t*)0x200000d8 = 0;
  *(uint64_t*)0x200000e0 = 0;
  *(uint64_t*)0x200000e8 = 0;
  *(uint64_t*)0x200000f0 = 0;
  *(uint64_t*)0x200000f8 = 0;
  *(uint64_t*)0x20000100 = 0;
  *(uint64_t*)0x20000108 = 0;
  *(uint64_t*)0x20000110 = 0;
  *(uint64_t*)0x20000118 = 0x200004c0;
  *(uint32_t*)0x200004c0 = 0x90;
  *(uint32_t*)0x200004c4 = 0;
  *(uint64_t*)0x200004c8 = 0;
  *(uint64_t*)0x200004d0 = -1;
  *(uint64_t*)0x200004d8 = 3;
  *(uint64_t*)0x200004e0 = 0;
  *(uint64_t*)0x200004e8 = 0;
  *(uint32_t*)0x200004f0 = 0;
  *(uint32_t*)0x200004f4 = 0;
  *(uint64_t*)0x200004f8 = 0;
  *(uint64_t*)0x20000500 = 0;
  *(uint64_t*)0x20000508 = 4;
  *(uint64_t*)0x20000510 = 0xffff;
  *(uint64_t*)0x20000518 = 0;
  *(uint64_t*)0x20000520 = 0;
  *(uint32_t*)0x20000528 = 0;
  *(uint32_t*)0x2000052c = 0;
  *(uint32_t*)0x20000530 = 0x3ff;
  *(uint32_t*)0x20000534 = 0x6000;
  *(uint32_t*)0x20000538 = 0;
  *(uint32_t*)0x2000053c = 0;
  *(uint32_t*)0x20000540 = 0;
  *(uint32_t*)0x20000544 = 0x400902;
  *(uint32_t*)0x20000548 = 0;
  *(uint32_t*)0x2000054c = 0;
  *(uint64_t*)0x20000120 = 0;
  *(uint64_t*)0x20000128 = 0;
  *(uint64_t*)0x20000130 = 0;
  *(uint64_t*)0x20000138 = 0;
  syz_fuse_handle_req(/*fd=*/r[4], /*buf=*/0x20008400, /*len=*/0x2055,
                      /*res=*/0x200000c0);
  *(uint32_t*)0x20000440 = 0x50;
  *(uint32_t*)0x20000444 = 0;
  *(uint64_t*)0x20000448 = 0;
  *(uint32_t*)0x20000450 = 7;
  *(uint32_t*)0x20000454 = 0x28;
  *(uint32_t*)0x20000458 = 0;
  *(uint32_t*)0x2000045c = 0;
  *(uint16_t*)0x20000460 = 0;
  *(uint16_t*)0x20000462 = 0;
  *(uint32_t*)0x20000464 = 0;
  *(uint32_t*)0x20000468 = 0;
  *(uint16_t*)0x2000046c = 0;
  *(uint16_t*)0x2000046e = 0;
  memset((void*)0x20000470, 0, 32);
  syscall(__NR_write, /*fd=*/r[4], /*arg=*/0x20000440ul, /*len=*/0x50ul);
  syscall(__NR_ioctl, /*fd=*/-1, /*cmd=*/0x301, /*arg=*/0x20000001ul);
  syscall(__NR_sendmmsg, /*fd=*/r[1], /*mmsg=*/0x20001cc0ul,
          /*vlen=*/0x400000000000026ul, /*f=*/0ul);
  memcpy((void*)0x20000040, "minix\000", 6);
  memcpy((void*)0x20000140, "./file1\000", 8);
  memcpy(
      (void*)0x20000640,
      "\x78\x9c\xec\xdb\xbd\x6e\xda\x50\x14\xc0\xf1\x63\xec\x62\xa0\x5f\xb4\xb4"
      "\x1d\xaa\x4a\x45\xea\xd0\x2e\xc5\x40\x5b\xa4\x6e\xed\xa3\x50\x70\x11\xaa"
      "\x69\xa2\x90\x05\xc4\x40\xf2\x02\x79\x86\xbc\x5f\x18\xa2\x2c\x99\x42\xe4"
      "\xeb\x8f\x28\x06\x83\x42\x00\x83\xfc\xff\x0d\xd8\xdc\x73\x3f\xce\x05\xae"
      "\x74\x84\x64\x01\x90\x5a\xbf\xa4\x2c\x9a\x68\x92\x71\xdf\x7c\xc8\x15\xcf"
      "\x4a\x5a\xd2\x29\x01\xd8\x92\xa9\x7f\xbd\x99\x02\x48\x1f\xfd\xda\xbb\x96"
      "\x93\x4e\x04\xc0\x96\x4d\x7e\x8b\xaa\xfd\x2f\x2e\x47\x2d\xd1\xb3\x61\x5d"
      "\x10\xdc\xb9\xf1\x71\x10\xcf\x98\x33\xf5\xc3\xe4\x44\xe4\xbd\xe1\xc7\xb5"
      "\x9c\xe4\xa3\xf5\xc5\xb9\xc8\xe7\x60\xbc\x56\x88\x0e\xbf\x72\x5b\x0a\x61"
      "\xfc\x69\x24\x9c\x55\xf3\x7f\xf9\x14\xac\xff\x4c\x9e\xcb\x0b\x79\x29\x45"
      "\x79\x25\xaf\xa5\xe4\xaf\xdf\x0e\xc7\xbf\x7b\x68\xf9\x33\xbb\x21\x00\x00"
      "\x52\x40\x93\xca\xb2\x78\x4c\x87\x27\xea\x35\x2f\x7f\xbb\x8e\x5d\x55\x3d"
      "\x23\xfe\x7c\x57\xbd\xdc\x78\x2d\x76\xfe\xac\x8a\xd7\x17\xc6\xf5\x8f\xf1"
      "\xf9\x99\x6a\x7c\xa5\x75\xe0\xb4\x17\xee\x03\xc0\xac\xcc\xca\xe7\xdf\xa3"
      "\x87\xe7\x7f\x3e\x63\xc9\xf9\x07\x90\x9c\xfe\x60\xf8\xaf\xe9\x38\xf6\xd1"
      "\x0e\xdc\xe4\xee\xe7\x33\x35\x45\x36\xb8\xa8\xb9\x0b\x5b\xde\xdf\x1b\x53"
      "\xa2\x2d\xc6\x5a\x66\xce\xc7\x86\x4e\x65\x5e\xc8\xfd\xd1\xac\x73\x5f\x23"
      "\xff\x60\x6c\xf6\x33\x1c\x47\x5b\xdc\x6a\x3a\xc9\xef\xd4\xf0\x56\xd7\xfd"
      "\x34\xf8\x5f\x0c\x48\x01\xeb\xb8\x77\x68\xf5\x07\xc3\xaf\xdd\x5e\xb3\x63"
      "\x77\xec\xff\xf5\x6a\xf5\x67\xe3\xc7\xb7\x5a\xa3\x6e\xa9\xca\xde\x5a\x5c"
      "\xdf\x03\xd8\x5f\x77\x65\x40\xd2\x99\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x80\x55\xbd\x91\xb7\x49\xa7\x00\x00\x00\x00\x60\x4b\x96\x3e\x18"
      "\x24\x86\xd7\xf1\x11\x0f\x18\x25\xbd\x47\x00\x00\x76\xce\x6d\x00\x00\x00"
      "\xff\xff\x18\x07\x0d\xd5",
      420);
  syz_mount_image(/*fs=*/0x20000040, /*dir=*/0x20000140,
                  /*flags=MS_NOSUID|MS_MANDLOCK*/ 0x42, /*opts=*/0x20000540,
                  /*chdir=*/0xd, /*size=*/0x1a4, /*img=*/0x20000640);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[5] = res;
  memcpy((void*)0x20000040, "cpuacct.usage_sys\000", 18);
  res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000040ul,
                /*flags=*/0x275aul, /*mode=*/0ul);
  if (res != -1)
    r[6] = res;
  memcpy((void*)0x20000340, "#! ", 3);
  memcpy((void*)0x20000343, "./file0", 7);
  *(uint8_t*)0x2000034a = 0xa;
  syscall(__NR_write, /*fd=*/r[6], /*data=*/0x20000340ul, /*len=*/0xbul);
  syscall(__NR_ftruncate, /*fd=*/r[5], /*len=*/0xc17aul);
  syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul, /*file=*/0ul, /*flags=*/0ul,
          /*mode=*/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;
  if ((reason = setup_usb()))
    printf("the reproducer may not work as expected: USB injection setup "
           "failed: %s\n",
           reason);
  if ((reason = setup_802154()))
    printf("the reproducer may not work as expected: 802154 injection setup "
           "failed: %s\n",
           reason);
  if ((reason = setup_swap()))
    printf("the reproducer may not work as expected: swap setup failed: %s\n",
           reason);
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}