// https://syzkaller.appspot.com/bug?id=7a53091be2839c92272bbbeb7c7e9cf89503b9e8
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <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/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <unistd.h>

#include <linux/capability.h>
#include <linux/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/if_tun.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/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_memfd_create
#define __NR_memfd_create 319
#endif
#ifndef __NR_pwritev2
#define __NR_pwritev2 328
#endif

static unsigned long long procid;

static __thread int clone_ongoing;
static __thread int skip_segv;
static __thread jmp_buf segv_env;

static void segv_handler(int sig, siginfo_t* info, void* ctx)
{
  if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) {
    exit(sig);
  }
  uintptr_t addr = (uintptr_t)info->si_addr;
  const uintptr_t prog_start = 1 << 20;
  const uintptr_t prog_end = 100 << 20;
  int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0;
  int valid = addr < prog_start || addr > prog_end;
  if (skip && valid) {
    _longjmp(segv_env, 1);
  }
  exit(sig);
}

static void install_segv_handler(void)
{
  struct sigaction sa;
  memset(&sa, 0, sizeof(sa));
  sa.sa_handler = SIG_IGN;
  syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8);
  syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8);
  memset(&sa, 0, sizeof(sa));
  sa.sa_sigaction = segv_handler;
  sa.sa_flags = SA_NODEFER | SA_SIGINFO;
  sigaction(SIGSEGV, &sa, NULL);
  sigaction(SIGBUS, &sa, NULL);
}

#define NONFAILING(...)                                                        \
  ({                                                                           \
    int ok = 1;                                                                \
    __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    if (_setjmp(segv_env) == 0) {                                              \
      __VA_ARGS__;                                                             \
    } else                                                                     \
      ok = 0;                                                                  \
    __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST);                       \
    ok;                                                                        \
  })

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);
}

#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 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 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)) {
  }
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

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();
  setup_binderfs();
  loop();
  exit(1);
}

#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);
}

uint64_t r[1] = {0xffffffffffffffff};

void loop(void)
{
  intptr_t res = 0;
  NONFAILING(
      memcpy((void*)0x20000180, "./file0/file0/file0/file0/file0\000", 32));
  syscall(__NR_umount2, /*path=*/0x20000180ul, /*flags=*/0ul);
  syscall(__NR_read, /*fd=*/-1, /*buf=*/0ul, /*len=*/0ul);
  NONFAILING(memcpy((void*)0x20000240, "syz\000", 4));
  NONFAILING(memcpy((void*)0x20000580, "9p\000", 3));
  syscall(__NR_mount, /*src=*/0x20000240ul, /*dst=*/0ul, /*type=*/0x20000580ul,
          /*flags=MS_REC*/ 0x4000ul, /*opts=*/0ul);
  syscall(__NR_pivot_root, /*new_root=*/0ul, /*put_old=*/0ul);
  syscall(__NR_chroot, /*dir=*/0ul);
  NONFAILING(memcpy(
      (void*)0x200066c0,
      "\xa0\x62\x03\x06\x07\x79\x2c\x01\x38\x6f\x28\xa4\x28\x82\x89\x47\xde\x99"
      "\xf7\x9c\xc5\x42\x70\x3d\x92\x3c\x7c\xb9\xd4\xe1\xf6\xfd\x95\xfb\xf2\xf7"
      "\x47\xab\x32\xf6\xfb\x04\x18\x61\xfb\x3f\x87\xa8\x8c\xb8\x54\x05\xb4\xe7"
      "\x3c\x0b\x6b\x12\xc8\x1e\x42\xa9\xf1\x3d\x82\xc3\x2b\x7d\xdb\x17\x2b\xcb"
      "\xa1\xaa\xc5\xc3\x8f\x08\x37\x47\xac\x17\x9f\x08\xd4\xd6\xd3\x42\xa8\x7b"
      "\xa8\xdd\x9b\xb7\xa9\x68\x0f\x27\x43\x3c\x33\x57\xb4\xf6\xac\x97\xb1\x9a"
      "\x97\x35\x92\xf1\xac\x6e\x78\x53\xa0\xb1\x5b\xa4\x2a\x28\xef\xb9\xcc\x30"
      "\xb1\x46\x34\x6b\x54\x60\x18\x96\x6e\x94\x97\x6c\xa2\x8f\x26\xa1\x95\x0d"
      "\xd6\x4c\x0a\xdb\xb0\xc2\xe0\x9b\xbd\x9c\xaa\x9e\x78\x86\xa2\xb3\xd6\xe2"
      "\xb6\xd6\x61\x6b\x71\x8f\x13\x22\xea\x28\x81\xca\x59\xef\x73\x94\x8b\x1b"
      "\xcd\xc2\xdd\x39\x70\xe6\x3c\xbc\x10\x43\xce\x42\xaf\x0e\xa1\xf9\x5d\x17"
      "\x26\x8c\xbc\x3e\xf0\x62\xc8\xc3\x1a\x53\x7e\x94\xa2\x0c\x1c\x50\x5a\x60"
      "\x22\xd5\xec\xe7\xf5\x1b\xd9\xc7\x54\xd8\xc4\x7c\xbe\x80\xbb\xb3\x0b\x21"
      "\x59\x99\x1a\x94\xdd\x3a\x25\xe6\x4a\xff\x8a\x7a\x17\x37\x4b\x5a\x71\xe0"
      "\xc7\xc2\x41\xcb\xfd\x7f\x08\x4e\x18\xa5\x0b\xea\x51\x2a\xda\x90\x22\x10"
      "\xa3\x88\x1f\xfc\xd4\x20\x71\xab\x09\xc4\xd8\x01\x39\xd8\x98\x0d\x6d\xc5"
      "\xd1\x2c\x25\x95\xce\xd4\x45\xca\xf2\x2f\x80\xd8\xfb\x1a\x4c\x24\x3d\xa4"
      "\x7f\xad\xb8\xe2\x8e\x9c\x04\xfe\xa8\x20\xa8\xa2\xf0\x32\xf5\xad\xff\x8b"
      "\x7d\x92\x69\xe6\x3d\xb6\x8d\x19\x6b\xf7\xf4\x16\x40\x5e\x52\xb6\xb8\xab"
      "\xd8\xbb\x9d\x96\x94\xb8\xb5\xed\xda\xe3\x48\x20\x99\x63\x73\x8c\xd9\x71"
      "\x0b\xd6\xc2\x91\xaf\x1c\x8e\xaf\x0e\x52\xd2\xf2\xf2\x4b\xef\x8c\x8b\xc9"
      "\xf7\x7e\xed\x40\x10\x4e\x07\xc8\xee\x1b\x4c\xb3\x58\xfc\x73\xe2\x65\x3f"
      "\xef\x62\x32\xb5\xe9\xf5\xd0\xbe\x26\xb9\x1a\x0b\x79\x67\xed\x5e\x3b\xf1"
      "\x0c\x44\x94\x24\xff\x4d\x11\x95\x1d\x96\x36\x77\x00\x1d\x95\x76\x42\x5d"
      "\x6a\x9c\x45\x03\x26\x8a\x40\x7d\x74\x85\x4f\x5e\x1c\xaa\xcc\x0c\xcc\x46"
      "\x3d\xc5\x6e\x68\x4d\xb1\xd8\x0b\x37\x0d\xa2\x38\x91\x55\x79\xab\x82\xcd"
      "\xbd\x7d\x15\x5a\xdf\x10\xb9\x6e\xd7\x11\x00\xea\x92\x83\x4e\x8a\x4e\x4f"
      "\x5b\x7b\x83\x1b\xff\x6f\xb4\xfe\xbe\x01\xbb\x39\x8e\xa4\x06\x54\x46\xf2"
      "\x77\xf1\x07\xaa\x3c\xc0\x6e\x0b\x7a\x6e\x98\x43\x4b\xf5\x77\x44\xba\x9e"
      "\xcb\x8e\xff\xe7\x04\xd7\xf8\x52\xe1\x6b\xc3\x3a\xc1\x13\x64\x9f\x75\x40"
      "\xb7\xa7\xa6\x7c\xf5\x49\x3b\x40\x0c\xe0\x6e\x57\x1d\x48\x5a\xf1\x73\x29"
      "\x38\xb7\x9d\xed\x4d\xe7\xda\xd9\x7a\x7e\x1c\x0b\xe7\xbd\x47\x9d\xc2\x64"
      "\x64\x7b\xb7\x65\x03\x16\x84\x23\xe3\xf6\xfc\x95\xf8\xac\x8e\xa3\x5e\x39"
      "\xf4\x76\xab\x54\xe8\x82\x86\xfc\xf7\x3e\xea\xd1\xf7\x94\x78\x44\x65\x59"
      "\x2f\xe4\xad\x11\x2a\xc6\x3b\xbc\x3b\x3f\x35\xb8\x7c\x40\xbc\x5f\xa6\xe3"
      "\xca\x6c\xad\x87\x8f\x97\x72\xa6\x1a\x23\xaa\x00\x49\x1a\x9e\x24\x42\xeb"
      "\x90\xa3\x2a\xf2\xbd\x74\xe9\x9d\x07\x5b\xcd\xa2\x02\x88\xbf\xc3\x0f\x3b"
      "\x00\xa7\xe8\xe1\xa0\xb4\x79\x15\x73\xab\xd6\x52\x84\xbb\xb5\x3e\x2b\x7d"
      "\x66\x72\x39\xb9\x5b\x33\x2d\xd4\x23\xe4\xd7\xc5\x12\xde\x55\x9b\xd5\x3f"
      "\xde\x52\x85\xad\xd9\x79\x5b\xda\x81\xec\x14\x26\x20\xe6\x93\xaf\x9c\x78"
      "\x7a\x44\x99\xdd\x76\xca\x0d\x77\xd9\xc7\xc4\x04\x3e\x53\x7e\xc6\xc1\xcd"
      "\x0b\x9a\x64\x2b\x12\xad\xc7\x82\xa0\xe0\x0f\x6c\x1e\xd7\x37\x9d\x5f\xff"
      "\x4c\x2f\xeb\x19\x18\x2d\xb9\x77\xf6\x57\xb1\x95\xe4\x71\x0f\xf0\x0f\x78"
      "\xe3\x5a\x14\x61\x19\x89\x74\x95\xb0\xe1\xa0\x06\x8a\x66\x06\x29\x2e\xe7"
      "\x2b\xf6\x5a\xdc\xd2\xcd\x29\xb4\xe5\x9a\x4b\x3f\x82\xea\xc7\x7d\x52\x54"
      "\x01\x3d\x03\xd2\xfb\x25\x11\x97\x55\x58\x90\x67\x41\x91\x2d\x09\x30\x4f"
      "\x0d\x4c\xf0\x8c\x8f\x62\x69\x0c\x67\x96\x8c\x86\x9f\x75\xa4\x02\x52\x24"
      "\xd8\xe8\x4b\xaf\x7a\x42\xe0\x1b\x4e\xcf\x7e\x55\xd7\xc4\x58\x39\x77\x8c"
      "\x22\x66\x88\x0d\x1b\xb7\x3e\x3a\xad\x61\x8d\x1a\x4f\x8d\x5a\x16\x91\x4d"
      "\x64\xd7\x04\x38\xa8\x85\x12\x64\x9f\xd4\xca\xa9\x05\x06\xe5\xa2\xd5\x8a"
      "\x33\xec\xae\xbc\x9b\x2e\x5f\x8a\x4f\xbe\xca\x57\xc8\x29\xae\x02\xfd\x2d"
      "\xc1\x46\xe9\x39\xc3\xd2\x95\xad\xa7\xdf\x4a\x07\xe7\x4b\x35\x6c\x6f\xfd"
      "\x7a\x9c\x54\x6b\x9e\xdd\xf7\xe0\x13\xcb\xcb\x2b\x57\xae\x0d\x22\x52\x49"
      "\xf7\xe0\x6a\x41\x56\x81\xd9\xf5\x97\xa0\x60\xfd\x55\xe3\x9b\xd5\x6f\x04"
      "\xb8\x63\xef\xec\xa4\x58\xa0\xcb\xc5\x4b\x66\x0d\xb5\x0c\xa4\x0d\x27\xa3"
      "\xfd\xa3\x41\x68\x60\xe6\x91\xcf\xc7\x80\x59\x3f\x06\xb4\x67\x70\x09\x68"
      "\xbb\x91\x8c\x32\x54\x7e\x37\x8b\x14\xb4\xe0\xdc\xd1\x1c\xb0\xb2\xfb\x36"
      "\xea\x70\x94\x6a\xc6\x22\x90\x18\x4b\x4e\xed\x38\xb5\x1c\x32\x2a\x75\x36"
      "\x7b\x50\xf5\x58\xe0\x63\xbf\x36\x33\x41\xa1\x7c\x28\xdd\xcb\xf9\xce\x53"
      "\xda\x06\xf2\x63\x03\xfd\x15\x64\x23\xa2\x5f\x68\x68\x09\xbc\x98\x45\xa7"
      "\x8e\x0c\xc3\xd9\x4e\x04\xbc\x8d\xa8\x5f\x22\xa4\xa8\xec\xe2\xc4\xac\x2c"
      "\x79\xe5\x4d\xcc\x4e\xab\xc6\x1e\x06\x70\x60\xad\x88\x03\x77\xa7\x1f\xe0"
      "\xc2\xc0\x30\x52\x56\xe4\xf3\xc6\x37\x57\x5f\x08\x6e\x4a\xe3\xd7\xab\x5d"
      "\x10\x6f\xde\x03\xd2\x4c\x47\xdc\xcb\xa3\xda\x23\xa2\x44\xc1\xf5\x0a\x4f"
      "\x60\xcd\x8d\x71\xb7\x73\x90\xc5\xce\x6d\x56\x12\xfd\x02\x60\xa2\xf3\x33"
      "\x89\xb0\x64\xae\x6a\xca\xc7\x83\xec\xa6\x28\x74\x23\x2f\xd3\x80\x8f\xb2"
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      "\x02\xf6\x4a\xa6\x84\xdf\xf7\xd9\xcf\x81\xfb\xe1\xaa\x88\x95\x9f\x79\x06"
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      "\xe6\x98\xf4\x9f\xf0\xda\x7d\xb0\x6d\x7c\x9e\x94\xa8\x77\x3a\x13\xfa\xb9"
      "\x3d\xef\x13\x96\x67\xb4\xdc\x6b\x74\x1b\xd2\x76\x9d\xa7\x78\x6a\xce\xcb"
      "\xe3\x15\xf9\x00\x6b\xb6\xb7\x2a\xbe\x5b\xdc\x58\x7d\x8d\x5a\xa8\xf6\x7a"
      "\xae\xfe\xf6\x81\x97\xfd\x2e\x78\x74\xd9\xb7\xda\x2c\x3a\x56\x18\x72\x0c"
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      "\x56\x8a\x86\x0c\xd4\xc2\x98\xf9\x67\xba\x32\x3d\x31\x58\x21\x95\x96\x29"
      "\xe5\xb7\xaa\xac\x36\x7e\x1d\xdb\x8a\x1c\x5d\x61\x50\x0a\xfa\x69\x33\x1a"
      "\x4c\x90\x86\x18\x52\xf5\x33\x65\x7b\x28\xb9\x7a\x34\x3b\xc5\x31\xa1\x1f"
      "\xf6\x34\xb1\x57\xa6\xd8\x59\xa3\x5f\x0d\x2a\x59\x53\x75\xe1\x1a\x32\x45"
      "\x75\x75\xf1\xd7\x3d\xa0\x33\xbf\x5e\xed\xa1\x23\x37\xb9\xfd\xd4\x6b\xce"
      "\x19\x2d\x3a\xaa\xa2\x40\xa8\xc6\x5b\xf4\x77\x04\xd6\xaa\x64\xa9\x53\x1f"
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      "\xc1\x8a\xbc\xaf\x22\xfb\xe8\xf6\x02\xed\x20\x12\x32\x25\x13\x17\xe1\xa1"
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      "\x67\x9e\x03\xff\x27\xdb\x0e\xc7\x5e\xee\xe3\xfc\xca\xfc\x7f\xcf\x22\xc3"
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      "\x2e\x44\x12\xa9\x58\xed\x01\x2b\xf7\xa8\x32\xc1\xea\xf6\x81\x34\xec\xab"
      "\xc4\x92\x7a\xd6\x66\xb3\xd0\xf2\x1d\x4e\x8d\x52\xfa\x37\xe0\xa9\x75\x11"
      "\x24\xef\xed\x8b\xf4\x75\x44\x29\x91\x38\xa6\xf6\x9d\x89\xe2\x95\x67\x7f"
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      "\xad\xcf\xae\x31\xbf\xc5\x5f\x30\x06\x4a\x89\x03\xc8\xd3\xb8\x28\xd2\x75"
      "\xa9\x37\xb1\xe4\xad\xff\xa0\x59\x7d\xa5\xe2\x53\xb5\x0b\xd7\x1b\x33\xf0"
      "\x57\xff\xef\xf0\xb2\xa0\x82\x9b\x3b\xf3\x33\x50\xfb\xe6\x7c\x7c\x79\x03"
      "\x4f\x80\xd6\x9e\x6a\x21\xbe\x49\x5a\x84\x8d\x32\x8f\x41\x6f\x15\x96\x64"
      "\x91\xb2\x18\xea\xb3\x90\x54\x4e\x39\xd4\x98\x25\x8a\xd8\x0d\xda\xe2\x48"
      "\x63\x4c\x84\x5c\xbe\x6f\x1c\x1e\x93\xe7\xc2\xb0\x20\x75\x41\x1e\x07\x5f"
      "\xe9\x36\xbc\xc7\x5f\x4a\x4e\x1a\x36\x87\xcb\x3d\xbb\xb6\x1c\xb3\x1d\xdf"
      "\xbb\xc8\x7a\x18\x59\xb3\xa4\x8f\xcc\xdd\x8e\x59\x15\xc8\xbf\x4e\xeb\xe8"
      "\xf7\x09\x3c\xef\x6a\x7a\x91\xc8\x68\x29\x15\xf9\x90\x8c\x85\x4c\x48\x3e"
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      "\xd3\xc0\x06\x37\xbd\x27\x16\x48\x28\x92\x5e\x9b\xb5\xd7\x9f\x1f\x1e\x6e"
      "\xb3\x27\x0a\xb7\x99\xae\x38\x77\x2f\x77\x95\x65\xd9\x2c\x47\x50\x3d\xe6"
      "\x95\xf7\xaa\xd7\xdd\xac\xda\x6f\x6c\x71\xe7\x55\xb3\x73\x72\x31\xb6\x47"
      "\x15\xbf\x07\x84\x9d\x34\x66\xe4\xf9\x22\x39\xf7\x33\x43\x6c\xe6\x74\x38"
      "\x9b\xd1\x69\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00",
      8192));
  NONFAILING(syz_fuse_handle_req(/*fd=*/-1, /*buf=*/0x200066c0, /*len=*/0x2000,
                                 /*res=*/0));
  NONFAILING(memcpy((void*)0x20000b40, "/dev/sg0\000", 9));
  NONFAILING(memcpy((void*)0x20000bc0, "hostfs\000", 7));
  syscall(__NR_mount, /*src=*/0x20000b40ul, /*dst=*/0ul, /*type=*/0x20000bc0ul,
          /*flags=MS_STRICTATIME|MS_MANDLOCK*/ 0x1000040ul, /*data=*/0ul);
  NONFAILING(*(uint32_t*)0x20000280 = 0x50);
  NONFAILING(*(uint32_t*)0x20000284 = 0);
  NONFAILING(*(uint64_t*)0x20000288 = 0);
  NONFAILING(*(uint32_t*)0x20000290 = 7);
  NONFAILING(*(uint32_t*)0x20000294 = 0x24);
  NONFAILING(*(uint32_t*)0x20000298 = 0);
  NONFAILING(*(uint32_t*)0x2000029c = 0);
  NONFAILING(*(uint16_t*)0x200002a0 = 0);
  NONFAILING(*(uint16_t*)0x200002a2 = 9);
  NONFAILING(*(uint32_t*)0x200002a4 = 0);
  NONFAILING(*(uint32_t*)0x200002a8 = 0);
  NONFAILING(*(uint16_t*)0x200002ac = 0);
  NONFAILING(*(uint16_t*)0x200002ae = 0);
  NONFAILING(memset((void*)0x200002b0, 0, 32));
  syscall(__NR_write, /*fd=*/-1, /*arg=*/0x20000280ul, /*len=*/0x50ul);
  NONFAILING(memcpy((void*)0x20000f00, "udf\000", 4));
  NONFAILING(
      memcpy((void*)0x20000f40,
             "./"
             "file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
             "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\000",
             253));
  NONFAILING(memcpy((void*)0x20000e40, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x20000e49 = 0x3d);
  NONFAILING(memcpy((void*)0x20000e4a, "iso8859-1", 9));
  NONFAILING(*(uint8_t*)0x20000e53 = 0x2c);
  NONFAILING(memcpy((void*)0x20000e54, "nostrict", 8));
  NONFAILING(*(uint8_t*)0x20000e5c = 0x2c);
  NONFAILING(memcpy((void*)0x20000e5d, "iocharset", 9));
  NONFAILING(*(uint8_t*)0x20000e66 = 0x3d);
  NONFAILING(memcpy((void*)0x20000e67, "default", 7));
  NONFAILING(*(uint8_t*)0x20000e6e = 0x2c);
  NONFAILING(memcpy((void*)0x20000e6f, "anchor", 6));
  NONFAILING(*(uint8_t*)0x20000e75 = 0x3d);
  NONFAILING(sprintf((char*)0x20000e76, "%020llu", (long long)6));
  NONFAILING(*(uint8_t*)0x20000e8a = 0x2c);
  NONFAILING(memcpy((void*)0x20000e8b, "gid", 3));
  NONFAILING(*(uint8_t*)0x20000e8e = 0x3d);
  NONFAILING(sprintf((char*)0x20000e8f, "%020llu", (long long)0));
  NONFAILING(*(uint8_t*)0x20000ea3 = 0x2c);
  NONFAILING(memcpy((void*)0x20000ea4, "partition", 9));
  NONFAILING(*(uint8_t*)0x20000ead = 0x3d);
  NONFAILING(sprintf((char*)0x20000eae, "%020llu", (long long)2));
  NONFAILING(*(uint8_t*)0x20000ec2 = 0x2c);
  NONFAILING(memcpy((void*)0x20000ec3, "undelete", 8));
  NONFAILING(*(uint8_t*)0x20000ecb = 0x2c);
  NONFAILING(memcpy((void*)0x20000ecc, "partition", 9));
  NONFAILING(*(uint8_t*)0x20000ed5 = 0x3d);
  NONFAILING(sprintf((char*)0x20000ed6, "%020llu", (long long)1));
  NONFAILING(*(uint8_t*)0x20000eea = 0x2c);
  NONFAILING(memcpy((void*)0x20000eeb, "unhide", 6));
  NONFAILING(*(uint8_t*)0x20000ef1 = 0x2c);
  NONFAILING(*(uint8_t*)0x20000ef2 = 0);
  NONFAILING(memcpy(
      (void*)0x200001c0,
      "\x78\x9c\xec\xdd\x4f\x6c\x1c\xd7\x7d\x07\xf0\xdf\x1b\x2d\xc5\x95\xdc\x56"
      "\x4c\xec\x2a\x4e\x1a\x07\x9b\xb6\x48\x65\xc6\x72\xf5\x2f\xa6\x62\x15\xee"
      "\xaa\xa6\xd9\x06\x90\x65\x22\x14\x73\x0b\xc0\x95\x48\xa9\x0b\x53\x24\x41"
      "\x52\x8d\x6c\xa4\x05\xd3\x4b\x0f\x3d\x04\x28\x8a\x1e\x72\x22\xd0\x1a\x05"
      "\x52\x34\x30\x9a\x22\xe8\x91\x69\x5d\x20\xb9\xf8\x50\xe4\xd4\x13\xd1\xc2"
      "\x46\x50\xf4\xc0\x16\x01\x02\x14\x08\x58\xcc\xec\x5b\x71\x49\x91\xb6\x2c"
      "\x92\x12\x25\x7f\x3e\x36\xf5\x9d\x9d\x79\x6f\xe6\xbd\x99\xf5\x8c\x2c\xe8"
      "\xcd\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\xe2\xf7"
      "\x5e\xb9\x78\xea\x74\xda\x66\xc3\xa1\x87\xd0\x18\x00\xe0\x81\xb8\x3c\xf6"
      "\xd5\x53\x67\xb6\x7b\xfe\x03\x00\x8f\xad\x2b\x3b\xfd\xff\x3f\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x70\x50\xa4\x28\xe2\xc9\x48\x31\x77\x79"
      "\x2d\x4d\x54\x9f\x3b\xea\x97\xda\x7d\xb7\x6e\x8f\x0f\x8f\x6c\x5f\xed\x48"
      "\xaa\x6a\x1e\xaa\xca\x97\x3f\xf5\xd3\x67\xce\x9e\xfb\xd2\x0b\x43\xe7\xbb"
      "\x79\xa9\x3d\xf3\x01\xf5\xf7\xda\x67\xe2\xb5\xb1\x2b\x17\x1b\x2f\xcf\xde"
      "\x9c\x9b\x9f\x5a\x58\x98\x9a\x6c\x8c\xcf\xb4\xaf\xcd\x4e\x4e\xdd\xf3\x1e"
      "\x76\x5b\x7f\xab\xc1\xea\x04\x34\x6e\xbe\x7e\x6b\xf2\xfa\xf5\x85\xc6\x99"
      "\xe7\xcf\x6e\xda\x7c\x7b\xe0\xfd\xfe\x27\x8e\x0f\x5c\x18\x7a\xf6\xe4\x33"
      "\xdd\xb2\xe3\xc3\x23\x23\x63\x1b\x45\xea\xbd\xe5\x6b\xf7\xdd\x90\x8e\x9d"
      "\x46\x78\x1c\x8e\x22\x4e\x46\x8a\xe7\xbe\xf7\xd3\xd4\x8a\x88\x22\x76\x7f"
      "\x2e\xea\x0f\xf6\xda\x6f\x75\xa4\xea\xc4\x60\xd5\x89\xf1\xe1\x91\xaa\x23"
      "\xd3\xed\xd6\xcc\x62\xb9\x71\xb4\x7b\x22\x8a\x88\x46\x4f\xa5\x66\xf7\x1c"
      "\x6d\x7f\x2d\xa2\xd6\xf7\x40\xfb\xb0\xb3\x66\xc4\x52\xd9\xfc\xb2\xc1\x83"
      "\x65\xf7\xc6\xe6\x5a\xf3\xad\xab\xd3\x53\x8d\xd1\xd6\xfc\x62\x7b\xb1\x3d"
      "\x3b\x33\x9a\x3a\xad\x2d\xfb\xd3\x88\x22\xce\xa7\x88\xe5\x88\x58\xed\xbf"
      "\x7b\x77\x7d\x51\x44\x2d\x52\x7c\xe7\xd8\x5a\xba\x9a\xdf\xfa\x51\x9d\x87"
      "\x2f\x56\x03\x83\x77\x6e\x47\xb1\x8f\x7d\xbc\x07\x65\x3b\x1b\x7d\x11\xcb"
      "\xc5\x23\x70\xcd\x0e\xb0\xfe\x28\xe2\xd5\x48\xf1\xb3\x77\x4e\xc4\xb5\x7c"
      "\x9f\xa9\xee\x35\x5f\x88\x78\xb5\xcc\x1f\x44\xbc\x55\xe6\x4b\x11\xa9\xfc"
      "\x62\x9c\x8b\x78\x6f\x9b\xef\x11\x8f\xa6\x5a\x14\xf1\xe7\xe5\xf5\xbf\xb0"
      "\x96\x26\xab\xfb\x41\xf7\xbe\x72\xe9\x6b\x8d\xaf\xcc\x5c\x9f\xed\x29\xdb"
      "\xbd\xaf\x7c\xc4\xe7\xc3\x5d\x77\x8a\x87\xf4\x7c\x38\xb2\x25\x1f\x8c\x03"
      "\x7e\x6f\xaa\x47\x11\xad\xea\x8e\xbf\x96\xee\xff\x37\x3b\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\xec\xb5\x23\x51\xc4\xa7\x23\xc5\x2b"
      "\xff\xf6\x47\xd5\xb8\xe2\xa8\xc6\xa5\x1f\xbb\x30\xf4\xfb\x03\xbf\xdc\x3b"
      "\x66\xfc\xe9\x0f\xd9\x4f\x59\xf6\xf9\x88\x58\x2a\xee\x6d\x4c\xee\xe1\x3c"
      "\x30\x70\x34\x8d\xa6\xf4\x90\xc7\x12\x7f\x9c\xd5\xa3\x88\x3f\xce\xe3\xff"
      "\xbe\xf5\xb0\x1b\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xf0\xb1\x56\xc4\x4f\x22\xc5\x8b\xef\x9e\x48\xcb\xd1\x3b\xa7\x78\x7b"
      "\xe6\x46\xe3\x4a\xeb\xea\x74\x67\x56\xd8\xee\xdc\xbf\xdd\x39\xd3\xd7\xd7"
      "\xd7\xd7\x1b\xa9\x93\xcd\x9c\x13\x39\x97\x72\x2e\xe7\x5c\xc9\xb9\x9a\x33"
      "\x8a\x5c\x3f\x67\x33\xe7\x44\xce\xa5\x9c\xcb\x39\x57\x72\xae\xe6\x8c\x43"
      "\xb9\x7e\xce\x66\xce\x89\x9c\x4b\x39\x97\x73\xae\xe4\x5c\xcd\x19\xb5\x5c"
      "\x3f\x67\x33\xe7\x44\xce\xa5\x9c\xcb\x39\x57\x72\xae\xe6\x8c\x03\x32\x77"
      "\x2f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\xe3\xa4\x88\x22\x7e\x11"
      "\x29\xbe\xfd\x8d\xb5\x14\x29\x22\x9a\x11\x13\xd1\xc9\x95\xfe\x87\xdd\x3a"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\xa0\xd4\x9f\x8a\xf8\x7e\xa4\x68\xfc\x41\xf3\xce\xba\x5a\x44\xa4\xea"
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      "\x4f\x9f\xa9\x75\xf2\x50\x77\xe3\xc0\xfb\xfd\x4f\x1c\x3f\x76\x61\x68\xe4"
      "\x73\x4f\xef\xb4\x9c\xb6\x6b\xc0\xe0\xa5\xf6\xcc\xad\xdb\x8d\xf1\xe1\x91"
      "\x91\xb1\x9e\xd5\xb5\x7c\xf4\x4f\xf6\xac\x1b\xc8\xc7\x2d\xf6\xa6\xeb\x44"
      "\xc4\xc2\x1b\x6f\xbe\xde\x9a\x9e\x9e\x9a\xbf\xff\x85\xf2\x2b\xb0\x8b\xea"
      "\x8f\xd0\x42\xaa\x7d\x5c\x7a\x6a\xa1\x5a\x88\xda\x81\x68\xc6\xc3\xe9\xfb"
      "\x26\xf5\x87\x75\x83\x62\x5f\x95\xcf\xff\xf7\x22\xc5\x6f\xbf\xfb\xef\xdd"
      "\x07\x7e\xe7\xf9\x5f\x8f\x5f\xea\x7c\xba\xf3\x84\x8f\x9f\xff\xc9\xc6\xf3"
      "\xff\xc5\xad\x3b\xba\xc7\xe7\x7f\x6d\x6b\xbd\xfc\xfc\x2f\x9f\xe9\xdb\x3d"
      "\xff\x9f\xec\x59\xf7\x62\xfe\xdd\x48\x5f\x2d\xa2\xbe\x78\x73\xae\xef\x78"
      "\x44\x7d\xe1\x8d\x37\x4f\xb6\x6f\xb6\x6e\x4c\xdd\x98\x9a\x39\x77\xea\xd4"
      "\x97\x87\x86\xbe\x7c\xf6\x54\xdf\xe1\x88\xfa\xf5\xf6\xf4\x54\xcf\xd2\x9e"
      "\x9c\x2e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x07\x27\x15"
      "\xf1\xbb\x91\xa2\xf5\xe3\xb5\xd4\x88\x88\xdb\xd5\x78\xad\x81\x0b\x43\xcf"
      "\x9e\x7c\xe6\x50\x1c\xaa\xc6\x5b\x6d\x1a\xb7\xfd\xda\xd8\x95\x8b\x8d\x97"
      "\x67\x6f\xce\xcd\x4f\x2d\x2c\x4c\x4d\x36\xc6\x67\xda\xd7\x66\x27\xa7\xee"
      "\xf5\x70\xf5\x6a\xb8\xd7\xf8\xf0\xc8\xbe\x74\xe6\x43\x1d\xd9\xe7\xf6\x1f"
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      "\x85\xc5\xf9\xd6\xb5\xed\x37\xc7\x91\x28\x22\x9a\xbd\x6b\x06\xab\x06\x8f"
      "\x0f\x8f\x54\x8d\x9e\x6e\xb7\x66\xaa\xaa\xa3\xdb\x0e\xa6\xff\xe8\xfa\x52"
      "\x11\xff\x11\x29\xae\x9d\x6b\xa4\xcf\xe7\x75\x79\xfc\xff\xd6\x11\xfe\x9b"
      "\xc6\xff\x2f\x6d\xdd\xd1\x1e\x8e\xff\xff\xdc\xd1\x8d\xf1\x7f\x9f\xe8\x29"
      "\x5a\x1e\x33\xa5\x22\x7e\x1e\x29\x7e\xeb\x2f\x9e\x8e\xcf\x57\xed\x3c\x1a"
      "\x77\x9d\xb3\x5c\xee\x6f\x22\xc5\xe0\xf9\xcf\xe6\x72\x71\xb8\x2c\xd7\x6d"
      "\x43\xe7\xbd\x02\x9d\x91\x81\x65\xd9\xff\x89\x14\xff\xf0\x8b\xcd\x65\xbb"
      "\xe3\x21\x9f\xdc\x28\x7b\xfa\x23\x9d\xdc\x47\x40\x79\xfd\x8f\x45\x8a\xef"
      "\xff\xd9\x77\xe3\xd7\xf3\xba\xcd\xef\x7f\xd8\xfe\xfa\x1f\xdd\xba\xa3\x7d"
      "\x7a\xff\xc3\x53\x3d\xeb\x8e\x6e\x7a\x5f\xc1\xae\xbb\x4e\xbe\xfe\x27\x23"
      "\xc5\x4b\x4f\xbe\x1d\xbf\x51\xad\xf9\xbf\x0f\x7c\xff\x47\xf7\xdd\x1b\x27"
      "\x3a\x85\x37\xde\xcf\xb1\x4f\xd7\xff\x57\x7b\xd6\x0d\xe4\xe3\xfe\xe6\x5e"
      "\x75\x1e\x00\x00\x00\x00\x00\x00\x00\x00\xe0\x11\xd6\x97\x8a\xf8\xdb\x48"
      "\xf1\xc3\x91\x5a\x7a\x21\xaf\xbb\x97\xbf\xff\x37\xb9\x75\x47\xfb\xf4\xf7"
      "\xbf\x3e\xd5\xb3\x6e\x72\x6f\xe6\x2b\xfa\xd0\x85\x5d\x9f\x54\x00\x00\x00"
      "\x00\x38\x20\xfa\x52\x11\x3f\x89\x14\x37\x16\xdf\xbe\x33\x86\x7a\xf3\xf8"
      "\xef\x9e\xf1\x9f\xbf\xb3\x31\xfe\x73\x38\x6d\xd9\x5a\xfd\x39\xdf\xaf\x54"
      "\xef\x0d\xd8\xcb\x3f\xff\xeb\x35\x90\x8f\x3b\xb1\xfb\x6e\x03\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xc0\x81\x92\x52\x11\x2f\xe4"
      "\xf9\xd4\x27\xaa\xf1\xfc\x93\x3b\xce\xa7\xbe\x12\x29\x5e\xf9\xaf\xe7\x72"
      "\xb9\x74\xbc\x2c\xd7\x9d\x07\x7e\xa0\xfa\xb5\x7e\x79\x76\xe6\xe4\xc5\xe9"
      "\xe9\xd9\x7a\x2c\xb6\xae\x4e\x4f\x35\xc6\xe6\x5a\xd7\xa6\xca\xba\x4f\x45"
      "\x8a\xb5\xbf\xfe\x6c\xae\x5b\x54\xf3\xab\x77\xe7\x9b\xef\xcc\xf1\xbe\x31"
      "\x17\xfb\x7c\xa4\x18\xf9\xbb\x6e\xd9\xce\x5c\xec\xdd\xb9\xc9\x9f\xda\x28"
      "\x7b\xba\x2c\xfb\x89\x48\xf1\x9f\x7f\xbf\xb9\x6c\x9e\x9a\x3a\xcf\x1d\x5d"
      "\x95\x3d\x53\x96\xfd\xab\x48\xf1\xf5\x7f\xda\xbe\xec\xf1\x8d\xb2\x67\xcb"
      "\xb2\xdf\x8d\x14\x3f\xfa\x7a\xa3\x5b\xf6\x68\x59\xb6\xfb\x7e\xd4\x4f\x6d"
      "\x94\x7d\xfe\xda\x6c\xb1\x0f\x57\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x80\x8f\x9b\xbe\x54\xc4\x9f\x46\x8a\xff\xbe\xb9\x7c"
      "\x67\x2c\x7f\x9e\xff\xbf\xaf\xe7\x63\xe5\xad\x6f\xf6\xcc\xf7\xbf\xc5\xed"
      "\x6a\x9e\xff\x81\x6a\xfe\xff\x9d\x96\xef\x67\xfe\xff\xea\xbd\x02\x4b\x3b"
      "\x1d\x15\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x00\x1e\x4f\x29\x8a\x78\x33\x52\xcc\x5d\x5e\x4b\x2b\xfd\xe5\xe7\x8e\xfa"
      "\xa5\xf6\xcc\xad\xdb\xe3\xc3\x23\xdb\x57\x3b\x92\xaa\x9a\x87\xaa\xf2\xe5"
      "\x4f\xfd\xf4\x99\xb3\xe7\xbe\xf4\xc2\xd0\xf9\x6e\x7e\x70\xfd\xbd\xf6\xe9"
      "\x78\x6d\xec\xca\xc5\xc6\xcb\xb3\x37\xe7\xe6\xa7\x16\x16\xa6\x26\x1b\xe3"
      "\x33\xed\x6b\xb3\x93\x53\xf7\xbc\x87\xdd\xd6\xdf\x6a\xb0\x3a\x01\x8d\x9b"
      "\xaf\xdf\x9a\xbc\x7e\x7d\xa1\x71\xe6\xf9\xb3\x9b\x36\xdf\x1e\x78\xbf\xff"
      "\x89\xe3\x03\x17\x86\x9e\x3d\xf9\x4c\xb7\xec\xf8\xf0\xc8\xc8\x58\x4f\x99"
      "\x5a\xdf\x7d\x1f\xfd\x2e\x69\x87\xf5\x87\xa3\x88\xbf\x8c\x14\xcf\x7d\xef"
      "\xa7\xe9\x87\xfd\x11\x45\xec\xfe\x5c\x7c\xc8\x77\x67\xbf\x1d\xa9\x3a\x31"
      "\x58\x75\x62\x7c\x78\xa4\xea\xc8\x74\xbb\x35\xb3\x58\x6e\x1c\xed\x9e\x88"
      "\x22\xa2\xd1\x53\xa9\xd9\x3d\x47\x0f\xe0\x5a\xec\x4a\x33\x62\xa9\x6c\x7e"
      "\xd9\xe0\xc1\xb2\x7b\x63\x73\xad\xf9\xd6\xd5\xe9\xa9\xc6\x68\x6b\x7e\xb1"
      "\xbd\xd8\x9e\x9d\x19\x4d\x9d\xd6\x96\xfd\x69\x44\x11\xe7\x53\xc4\x72\x44"
      "\xac\xf6\xdf\xbd\xbb\xbe\x28\xe2\xf5\x48\xf1\x9d\x63\x6b\xe9\x9f\xfb\x23"
      "\x0e\x75\xcf\xc3\x17\x2f\x8f\x7d\xf5\xd4\x99\x9d\xdb\x51\xec\x63\x1f\xef"
      "\x41\xd9\xce\x46\x5f\xc4\x72\xf1\x08\x5c\xb3\x03\xac\x3f\x8a\xf8\xc7\x48"
      "\xf1\xb3\x77\x4e\xc4\xbf\xf4\x47\xd4\xa2\xf3\x13\x5f\x88\x78\xb5\xcc\x1f"
      "\x44\xbc\x15\x9d\xeb\x9d\xca\x2f\xc6\xb9\x88\xf7\xb6\xf9\x1e\xf1\x68\xaa"
      "\x45\x11\xff\x5b\x5e\xff\x0b\x6b\xe9\x9d\xfe\xf2\x7e\xd0\xbd\xaf\x5c\xfa"
      "\x5a\xe3\x2b\x33\xd7\x67\x7b\xca\x76\xef\x2b\x8f\xfc\xf3\xe1\x41\x3a\xe0"
      "\xf7\xa6\x7a\x14\xf1\xa3\xea\x8e\xbf\x96\xfe\xd5\x7f\xd7\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x07\x48\x11\xbf\x16\x29\x5e\x7c\xf7"
      "\x44\xaa\xc6\x07\xdf\x19\x53\xdc\x9e\xb9\xd1\xb8\xd2\xba\x3a\xdd\x19\xd6"
      "\xd7\x1d\xfb\xd7\x1d\x33\xbd\xbe\xbe\xbe\xde\x48\x9d\x6c\xe6\x9c\xc8\xb9"
      "\x94\x73\x39\xe7\x4a\xce\xd5\x9c\x51\xe4\xfa\x39\x9b\x65\xd6\xd7\xd7\x27"
      "\xf2\xe7\xa5\x9c\xcb\x39\x57\x72\xae\xe6\x8c\x43\xb9\x7e\xce\x66\xce\x89"
      "\x9c\x4b\x39\x97\x73\xae\xe4\x5c\xcd\x19\xb5\x5c\x3f\x67\x33\xe7\x44\xce"
      "\xa5\x9c\xcb\x39\x57\x72\xae\xe6\x8c\x03\x32\x76\x0f\x00\x00\x00\x00\x00"
      "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x78\xbc\x14\xd5\x3f\x29\xbe\xfd\x8d"
      "\xb5\xb4\xde\xdf\x99\x5f\x7a\x22\x3a\xb9\x62\x3e\xd0\xc7\xde\xff\x07\x00"
      "\x00\xff\xff\x76\xc3\xf9\x1c",
      3139));
  NONFAILING(syz_mount_image(
      /*fs=*/0x20000f00, /*dir=*/0x20000f40,
      /*flags=MS_I_VERSION|MS_SYNCHRONOUS|MS_RELATIME*/ 0xa00010,
      /*opts=*/0x20000e40, /*chdir=*/1, /*size=*/0xc43, /*img=*/0x200001c0));
  NONFAILING(memcpy((void*)0x20000040, "./bus\000", 6));
  syscall(__NR_creat, /*file=*/0x20000040ul, /*mode=*/0ul);
  NONFAILING(memcpy((void*)0x20000380, "/dev/loop", 9));
  NONFAILING(*(uint8_t*)0x20000389 = 0x30);
  NONFAILING(*(uint8_t*)0x2000038a = 0);
  NONFAILING(memcpy((void*)0x20000140, "./bus\000", 6));
  syscall(__NR_mount, /*src=*/0x20000380ul, /*dst=*/0x20000140ul, /*type=*/0ul,
          /*flags=MS_BIND*/ 0x1000ul, /*data=*/0ul);
  NONFAILING(memcpy((void*)0x200005c0, "./bus\000", 6));
  res = syscall(
      __NR_open, /*file=*/0x200005c0ul,
      /*flags=O_NONBLOCK|O_NOFOLLOW|O_NOATIME|O_DIRECT|O_CREAT|0x2*/ 0x64842ul,
      /*mode=*/0ul);
  if (res != -1)
    r[0] = res;
  NONFAILING(*(uint64_t*)0x20000240 = 0x20000000);
  NONFAILING(memset((void*)0x20000000, 133, 1));
  NONFAILING(*(uint64_t*)0x20000248 = 0x78c00);
  syscall(__NR_pwritev2, /*fd=*/r[0], /*vec=*/0x20000240ul, /*vlen=*/1ul,
          /*off_low=*/0x7a00, /*off_high=*/0,
          /*flags=RWF_HIPRI|RWF_DSYNC*/ 3ul);
}
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);
  install_segv_handler();
  do_sandbox_none();
  return 0;
}