// https://syzkaller.appspot.com/bug?id=82ee167a55d45618bcbf303528c26d3c44b06559
// 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 <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/ioctl.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/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/usb/ch9.h>
#include <linux/veth.h>

#ifndef __NR_mmap
#define __NR_mmap 222
#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 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 void netlink_add_neigh(struct nlmsg* nlmsg, int sock, const char* name,
                              const void* addr, int addrsize, const void* mac,
                              int macsize)
{
  struct ndmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ndm_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ndm_ifindex = if_nametoindex(name);
  hdr.ndm_state = NUD_PERMANENT;
  netlink_init(nlmsg, RTM_NEWNEIGH, NLM_F_EXCL | NLM_F_CREATE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, NDA_DST, addr, addrsize);
  netlink_attr(nlmsg, NDA_LLADDR, mac, macsize);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

static int tunfd = -1;

#define TUN_IFACE "syz_tun"
#define LOCAL_MAC 0xaaaaaaaaaaaa
#define REMOTE_MAC 0xaaaaaaaaaabb
#define LOCAL_IPV4 "172.20.20.170"
#define REMOTE_IPV4 "172.20.20.187"
#define LOCAL_IPV6 "fe80::aa"
#define REMOTE_IPV6 "fe80::bb"

#define IFF_NAPI 0x0010

static void initialize_tun(void)
{
  tunfd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
  if (tunfd == -1) {
    printf("tun: can't open /dev/net/tun: please enable CONFIG_TUN=y\n");
    printf("otherwise fuzzing or reproducing might not work as intended\n");
    return;
  }
  const int kTunFd = 200;
  if (dup2(tunfd, kTunFd) < 0)
    exit(1);
  close(tunfd);
  tunfd = kTunFd;
  struct ifreq ifr;
  memset(&ifr, 0, sizeof(ifr));
  strncpy(ifr.ifr_name, TUN_IFACE, IFNAMSIZ);
  ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
  if (ioctl(tunfd, TUNSETIFF, (void*)&ifr) < 0) {
    exit(1);
  }
  char sysctl[64];
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/accept_dad", TUN_IFACE);
  write_file(sysctl, "0");
  sprintf(sysctl, "/proc/sys/net/ipv6/conf/%s/router_solicitations", TUN_IFACE);
  write_file(sysctl, "0");
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  netlink_add_addr4(&nlmsg, sock, TUN_IFACE, LOCAL_IPV4);
  netlink_add_addr6(&nlmsg, sock, TUN_IFACE, LOCAL_IPV6);
  uint64_t macaddr = REMOTE_MAC;
  struct in_addr in_addr;
  inet_pton(AF_INET, REMOTE_IPV4, &in_addr);
  netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in_addr, sizeof(in_addr),
                    &macaddr, ETH_ALEN);
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, REMOTE_IPV6, &in6_addr);
  netlink_add_neigh(&nlmsg, sock, TUN_IFACE, &in6_addr, sizeof(in6_addr),
                    &macaddr, ETH_ALEN);
  macaddr = LOCAL_MAC;
  netlink_device_change(&nlmsg, sock, TUN_IFACE, true, 0, &macaddr, ETH_ALEN,
                        NULL);
  close(sock);
}

#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);
}

static int read_tun(char* data, int size)
{
  if (tunfd < 0)
    return -1;
  int rv = read(tunfd, data, size);
  if (rv < 0) {
    if (errno == EAGAIN || errno == EBADF || errno == EBADFD)
      return -1;
    exit(1);
  }
  return rv;
}

static void flush_tun()
{
  char data[1000];
  while (read_tun(&data[0], sizeof(data)) != -1) {
  }
}

#define MAX_FDS 30

#define USB_MAX_IFACE_NUM 4
#define USB_MAX_EP_NUM 32
#define USB_MAX_FDS 6

struct usb_endpoint_index {
  struct usb_endpoint_descriptor desc;
  int handle;
};

struct usb_iface_index {
  struct usb_interface_descriptor* iface;
  uint8_t bInterfaceNumber;
  uint8_t bAlternateSetting;
  uint8_t bInterfaceClass;
  struct usb_endpoint_index eps[USB_MAX_EP_NUM];
  int eps_num;
};

struct usb_device_index {
  struct usb_device_descriptor* dev;
  struct usb_config_descriptor* config;
  uint8_t bDeviceClass;
  uint8_t bMaxPower;
  int config_length;
  struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
  int ifaces_num;
  int iface_cur;
};

struct usb_info {
  int fd;
  struct usb_device_index index;
};

static struct usb_info usb_devices[USB_MAX_FDS];

static struct usb_device_index* lookup_usb_index(int fd)
{
  for (int i = 0; i < USB_MAX_FDS; i++) {
    if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd)
      return &usb_devices[i].index;
  }
  return NULL;
}

static int usb_devices_num;

static bool parse_usb_descriptor(const char* buffer, size_t length,
                                 struct usb_device_index* index)
{
  if (length < sizeof(*index->dev) + sizeof(*index->config))
    return false;
  memset(index, 0, sizeof(*index));
  index->dev = (struct usb_device_descriptor*)buffer;
  index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
  index->bDeviceClass = index->dev->bDeviceClass;
  index->bMaxPower = index->config->bMaxPower;
  index->config_length = length - sizeof(*index->dev);
  index->iface_cur = -1;
  size_t offset = 0;
  while (true) {
    if (offset + 1 >= length)
      break;
    uint8_t desc_length = buffer[offset];
    uint8_t desc_type = buffer[offset + 1];
    if (desc_length <= 2)
      break;
    if (offset + desc_length > length)
      break;
    if (desc_type == USB_DT_INTERFACE &&
        index->ifaces_num < USB_MAX_IFACE_NUM) {
      struct usb_interface_descriptor* iface =
          (struct usb_interface_descriptor*)(buffer + offset);
      index->ifaces[index->ifaces_num].iface = iface;
      index->ifaces[index->ifaces_num].bInterfaceNumber =
          iface->bInterfaceNumber;
      index->ifaces[index->ifaces_num].bAlternateSetting =
          iface->bAlternateSetting;
      index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
      index->ifaces_num++;
    }
    if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
      struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
      if (iface->eps_num < USB_MAX_EP_NUM) {
        memcpy(&iface->eps[iface->eps_num].desc, buffer + offset,
               sizeof(iface->eps[iface->eps_num].desc));
        iface->eps_num++;
      }
    }
    offset += desc_length;
  }
  return true;
}

static struct usb_device_index* add_usb_index(int fd, const char* dev,
                                              size_t dev_len)
{
  int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
  if (i >= USB_MAX_FDS)
    return NULL;
  if (!parse_usb_descriptor(dev, dev_len, &usb_devices[i].index))
    return NULL;
  __atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
  return &usb_devices[i].index;
}

struct vusb_connect_string_descriptor {
  uint32_t len;
  char* str;
} __attribute__((packed));

struct vusb_connect_descriptors {
  uint32_t qual_len;
  char* qual;
  uint32_t bos_len;
  char* bos;
  uint32_t strs_len;
  struct vusb_connect_string_descriptor strs[0];
} __attribute__((packed));

static const char default_string[] = {8, USB_DT_STRING, 's', 0, 'y', 0, 'z', 0};

static const char default_lang_id[] = {4, USB_DT_STRING, 0x09, 0x04};

static bool
lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
                           const struct usb_ctrlrequest* ctrl,
                           struct usb_qualifier_descriptor* qual,
                           char** response_data, uint32_t* response_length)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  uint8_t str_idx;
  if (!index)
    return false;
  switch (ctrl->bRequestType & USB_TYPE_MASK) {
  case USB_TYPE_STANDARD:
    switch (ctrl->bRequest) {
    case USB_REQ_GET_DESCRIPTOR:
      switch (ctrl->wValue >> 8) {
      case USB_DT_DEVICE:
        *response_data = (char*)index->dev;
        *response_length = sizeof(*index->dev);
        return true;
      case USB_DT_CONFIG:
        *response_data = (char*)index->config;
        *response_length = index->config_length;
        return true;
      case USB_DT_STRING:
        str_idx = (uint8_t)ctrl->wValue;
        if (descs && str_idx < descs->strs_len) {
          *response_data = descs->strs[str_idx].str;
          *response_length = descs->strs[str_idx].len;
          return true;
        }
        if (str_idx == 0) {
          *response_data = (char*)&default_lang_id[0];
          *response_length = default_lang_id[0];
          return true;
        }
        *response_data = (char*)&default_string[0];
        *response_length = default_string[0];
        return true;
      case USB_DT_BOS:
        *response_data = descs->bos;
        *response_length = descs->bos_len;
        return true;
      case USB_DT_DEVICE_QUALIFIER:
        if (!descs->qual) {
          qual->bLength = sizeof(*qual);
          qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
          qual->bcdUSB = index->dev->bcdUSB;
          qual->bDeviceClass = index->dev->bDeviceClass;
          qual->bDeviceSubClass = index->dev->bDeviceSubClass;
          qual->bDeviceProtocol = index->dev->bDeviceProtocol;
          qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
          qual->bNumConfigurations = index->dev->bNumConfigurations;
          qual->bRESERVED = 0;
          *response_data = (char*)qual;
          *response_length = sizeof(*qual);
          return true;
        }
        *response_data = descs->qual;
        *response_length = descs->qual_len;
        return true;
      default:
        break;
      }
      break;
    default:
      break;
    }
    break;
  default:
    break;
  }
  return false;
}

typedef bool (*lookup_connect_out_response_t)(
    int fd, const struct vusb_connect_descriptors* descs,
    const struct usb_ctrlrequest* ctrl, bool* done);

static bool lookup_connect_response_out_generic(
    int fd, const struct vusb_connect_descriptors* descs,
    const struct usb_ctrlrequest* ctrl, bool* done)
{
  switch (ctrl->bRequestType & USB_TYPE_MASK) {
  case USB_TYPE_STANDARD:
    switch (ctrl->bRequest) {
    case USB_REQ_SET_CONFIGURATION:
      *done = true;
      return true;
    default:
      break;
    }
    break;
  }
  return false;
}

struct vusb_descriptor {
  uint8_t req_type;
  uint8_t desc_type;
  uint32_t len;
  char data[0];
} __attribute__((packed));

struct vusb_descriptors {
  uint32_t len;
  struct vusb_descriptor* generic;
  struct vusb_descriptor* descs[0];
} __attribute__((packed));

struct vusb_response {
  uint8_t type;
  uint8_t req;
  uint32_t len;
  char data[0];
} __attribute__((packed));

struct vusb_responses {
  uint32_t len;
  struct vusb_response* generic;
  struct vusb_response* resps[0];
} __attribute__((packed));

static bool lookup_control_response(const struct vusb_descriptors* descs,
                                    const struct vusb_responses* resps,
                                    struct usb_ctrlrequest* ctrl,
                                    char** response_data,
                                    uint32_t* response_length)
{
  int descs_num = 0;
  int resps_num = 0;
  if (descs)
    descs_num = (descs->len - offsetof(struct vusb_descriptors, descs)) /
                sizeof(descs->descs[0]);
  if (resps)
    resps_num = (resps->len - offsetof(struct vusb_responses, resps)) /
                sizeof(resps->resps[0]);
  uint8_t req = ctrl->bRequest;
  uint8_t req_type = ctrl->bRequestType & USB_TYPE_MASK;
  uint8_t desc_type = ctrl->wValue >> 8;
  if (req == USB_REQ_GET_DESCRIPTOR) {
    int i;
    for (i = 0; i < descs_num; i++) {
      struct vusb_descriptor* desc = descs->descs[i];
      if (!desc)
        continue;
      if (desc->req_type == req_type && desc->desc_type == desc_type) {
        *response_length = desc->len;
        if (*response_length != 0)
          *response_data = &desc->data[0];
        else
          *response_data = NULL;
        return true;
      }
    }
    if (descs && descs->generic) {
      *response_data = &descs->generic->data[0];
      *response_length = descs->generic->len;
      return true;
    }
  } else {
    int i;
    for (i = 0; i < resps_num; i++) {
      struct vusb_response* resp = resps->resps[i];
      if (!resp)
        continue;
      if (resp->type == req_type && resp->req == req) {
        *response_length = resp->len;
        if (*response_length != 0)
          *response_data = &resp->data[0];
        else
          *response_data = NULL;
        return true;
      }
    }
    if (resps && resps->generic) {
      *response_data = &resps->generic->data[0];
      *response_length = resps->generic->len;
      return true;
    }
  }
  return false;
}

#define UDC_NAME_LENGTH_MAX 128

struct usb_raw_init {
  __u8 driver_name[UDC_NAME_LENGTH_MAX];
  __u8 device_name[UDC_NAME_LENGTH_MAX];
  __u8 speed;
};

enum usb_raw_event_type {
  USB_RAW_EVENT_INVALID = 0,
  USB_RAW_EVENT_CONNECT = 1,
  USB_RAW_EVENT_CONTROL = 2,
};

struct usb_raw_event {
  __u32 type;
  __u32 length;
  __u8 data[0];
};

struct usb_raw_ep_io {
  __u16 ep;
  __u16 flags;
  __u32 length;
  __u8 data[0];
};

#define USB_RAW_EPS_NUM_MAX 30
#define USB_RAW_EP_NAME_MAX 16
#define USB_RAW_EP_ADDR_ANY 0xff

struct usb_raw_ep_caps {
  __u32 type_control : 1;
  __u32 type_iso : 1;
  __u32 type_bulk : 1;
  __u32 type_int : 1;
  __u32 dir_in : 1;
  __u32 dir_out : 1;
};

struct usb_raw_ep_limits {
  __u16 maxpacket_limit;
  __u16 max_streams;
  __u32 reserved;
};

struct usb_raw_ep_info {
  __u8 name[USB_RAW_EP_NAME_MAX];
  __u32 addr;
  struct usb_raw_ep_caps caps;
  struct usb_raw_ep_limits limits;
};

struct usb_raw_eps_info {
  struct usb_raw_ep_info eps[USB_RAW_EPS_NUM_MAX];
};

#define USB_RAW_IOCTL_INIT _IOW('U', 0, struct usb_raw_init)
#define USB_RAW_IOCTL_RUN _IO('U', 1)
#define USB_RAW_IOCTL_EVENT_FETCH _IOR('U', 2, struct usb_raw_event)
#define USB_RAW_IOCTL_EP0_WRITE _IOW('U', 3, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP0_READ _IOWR('U', 4, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP_ENABLE _IOW('U', 5, struct usb_endpoint_descriptor)
#define USB_RAW_IOCTL_EP_DISABLE _IOW('U', 6, __u32)
#define USB_RAW_IOCTL_EP_WRITE _IOW('U', 7, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_EP_READ _IOWR('U', 8, struct usb_raw_ep_io)
#define USB_RAW_IOCTL_CONFIGURE _IO('U', 9)
#define USB_RAW_IOCTL_VBUS_DRAW _IOW('U', 10, __u32)
#define USB_RAW_IOCTL_EPS_INFO _IOR('U', 11, struct usb_raw_eps_info)
#define USB_RAW_IOCTL_EP0_STALL _IO('U', 12)
#define USB_RAW_IOCTL_EP_SET_HALT _IOW('U', 13, __u32)
#define USB_RAW_IOCTL_EP_CLEAR_HALT _IOW('U', 14, __u32)
#define USB_RAW_IOCTL_EP_SET_WEDGE _IOW('U', 15, __u32)

static int usb_raw_open()
{
  return open("/dev/raw-gadget", O_RDWR);
}

static int usb_raw_init(int fd, uint32_t speed, const char* driver,
                        const char* device)
{
  struct usb_raw_init arg;
  strncpy((char*)&arg.driver_name[0], driver, sizeof(arg.driver_name));
  strncpy((char*)&arg.device_name[0], device, sizeof(arg.device_name));
  arg.speed = speed;
  return ioctl(fd, USB_RAW_IOCTL_INIT, &arg);
}

static int usb_raw_run(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_RUN, 0);
}

static int usb_raw_ep_write(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_WRITE, io);
}

static int usb_raw_configure(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_CONFIGURE, 0);
}

static int usb_raw_vbus_draw(int fd, uint32_t power)
{
  return ioctl(fd, USB_RAW_IOCTL_VBUS_DRAW, power);
}

static int usb_raw_ep0_write(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_WRITE, io);
}

static int usb_raw_ep0_read(int fd, struct usb_raw_ep_io* io)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_READ, io);
}

static int usb_raw_event_fetch(int fd, struct usb_raw_event* event)
{
  return ioctl(fd, USB_RAW_IOCTL_EVENT_FETCH, event);
}

static int usb_raw_ep_enable(int fd, struct usb_endpoint_descriptor* desc)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_ENABLE, desc);
}

static int usb_raw_ep_disable(int fd, int ep)
{
  return ioctl(fd, USB_RAW_IOCTL_EP_DISABLE, ep);
}

static int usb_raw_ep0_stall(int fd)
{
  return ioctl(fd, USB_RAW_IOCTL_EP0_STALL, 0);
}

static int lookup_interface(int fd, uint8_t bInterfaceNumber,
                            uint8_t bAlternateSetting)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return -1;
  for (int i = 0; i < index->ifaces_num; i++) {
    if (index->ifaces[i].bInterfaceNumber == bInterfaceNumber &&
        index->ifaces[i].bAlternateSetting == bAlternateSetting)
      return i;
  }
  return -1;
}

static int lookup_endpoint(int fd, uint8_t bEndpointAddress)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return -1;
  if (index->iface_cur < 0)
    return -1;
  for (int ep = 0; ep < index->ifaces[index->iface_cur].eps_num; ep++)
    if (index->ifaces[index->iface_cur].eps[ep].desc.bEndpointAddress ==
        bEndpointAddress)
      return index->ifaces[index->iface_cur].eps[ep].handle;
  return -1;
}

#define USB_MAX_PACKET_SIZE 4096

struct usb_raw_control_event {
  struct usb_raw_event inner;
  struct usb_ctrlrequest ctrl;
  char data[USB_MAX_PACKET_SIZE];
};

struct usb_raw_ep_io_data {
  struct usb_raw_ep_io inner;
  char data[USB_MAX_PACKET_SIZE];
};

static void set_interface(int fd, int n)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return;
  if (index->iface_cur >= 0 && index->iface_cur < index->ifaces_num) {
    for (int ep = 0; ep < index->ifaces[index->iface_cur].eps_num; ep++) {
      int rv = usb_raw_ep_disable(
          fd, index->ifaces[index->iface_cur].eps[ep].handle);
      if (rv < 0) {
      } else {
      }
    }
  }
  if (n >= 0 && n < index->ifaces_num) {
    for (int ep = 0; ep < index->ifaces[n].eps_num; ep++) {
      int rv = usb_raw_ep_enable(fd, &index->ifaces[n].eps[ep].desc);
      if (rv < 0) {
      } else {
        index->ifaces[n].eps[ep].handle = rv;
      }
    }
    index->iface_cur = n;
  }
}

static int configure_device(int fd)
{
  struct usb_device_index* index = lookup_usb_index(fd);
  if (!index)
    return -1;
  int rv = usb_raw_vbus_draw(fd, index->bMaxPower);
  if (rv < 0) {
    return rv;
  }
  rv = usb_raw_configure(fd);
  if (rv < 0) {
    return rv;
  }
  set_interface(fd, 0);
  return 0;
}

static volatile long
syz_usb_connect_impl(uint64_t speed, uint64_t dev_len, const char* dev,
                     const struct vusb_connect_descriptors* descs,
                     lookup_connect_out_response_t lookup_connect_response_out)
{
  if (!dev) {
    return -1;
  }
  int fd = usb_raw_open();
  if (fd < 0) {
    return fd;
  }
  if (fd >= MAX_FDS) {
    close(fd);
    return -1;
  }
  struct usb_device_index* index = add_usb_index(fd, dev, dev_len);
  if (!index) {
    return -1;
  }
  char device[32];
  sprintf(&device[0], "dummy_udc.%llu", procid);
  int rv = usb_raw_init(fd, speed, "dummy_udc", &device[0]);
  if (rv < 0) {
    return rv;
  }
  rv = usb_raw_run(fd);
  if (rv < 0) {
    return rv;
  }
  bool done = false;
  while (!done) {
    struct usb_raw_control_event event;
    event.inner.type = 0;
    event.inner.length = sizeof(event.ctrl);
    rv = usb_raw_event_fetch(fd, (struct usb_raw_event*)&event);
    if (rv < 0) {
      return rv;
    }
    if (event.inner.type != USB_RAW_EVENT_CONTROL)
      continue;
    char* response_data = NULL;
    uint32_t response_length = 0;
    struct usb_qualifier_descriptor qual;
    if (event.ctrl.bRequestType & USB_DIR_IN) {
      if (!lookup_connect_response_in(fd, descs, &event.ctrl, &qual,
                                      &response_data, &response_length)) {
        usb_raw_ep0_stall(fd);
        continue;
      }
    } else {
      if (!lookup_connect_response_out(fd, descs, &event.ctrl, &done)) {
        usb_raw_ep0_stall(fd);
        continue;
      }
      response_data = NULL;
      response_length = event.ctrl.wLength;
    }
    if ((event.ctrl.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        event.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
      rv = configure_device(fd);
      if (rv < 0) {
        return rv;
      }
    }
    struct usb_raw_ep_io_data response;
    response.inner.ep = 0;
    response.inner.flags = 0;
    if (response_length > sizeof(response.data))
      response_length = 0;
    if (event.ctrl.wLength < response_length)
      response_length = event.ctrl.wLength;
    response.inner.length = response_length;
    if (response_data)
      memcpy(&response.data[0], response_data, response_length);
    else
      memset(&response.data[0], 0, response_length);
    if (event.ctrl.bRequestType & USB_DIR_IN) {
      rv = usb_raw_ep0_write(fd, (struct usb_raw_ep_io*)&response);
    } else {
      rv = usb_raw_ep0_read(fd, (struct usb_raw_ep_io*)&response);
    }
    if (rv < 0) {
      return rv;
    }
  }
  sleep_ms(200);
  return fd;
}

static volatile long syz_usb_connect(volatile long a0, volatile long a1,
                                     volatile long a2, volatile long a3)
{
  uint64_t speed = a0;
  uint64_t dev_len = a1;
  const char* dev = (const char*)a2;
  const struct vusb_connect_descriptors* descs =
      (const struct vusb_connect_descriptors*)a3;
  return syz_usb_connect_impl(speed, dev_len, dev, descs,
                              &lookup_connect_response_out_generic);
}

static volatile long syz_usb_control_io(volatile long a0, volatile long a1,
                                        volatile long a2)
{
  int fd = a0;
  const struct vusb_descriptors* descs = (const struct vusb_descriptors*)a1;
  const struct vusb_responses* resps = (const struct vusb_responses*)a2;
  struct usb_raw_control_event event;
  event.inner.type = 0;
  event.inner.length = USB_MAX_PACKET_SIZE;
  int rv = usb_raw_event_fetch(fd, (struct usb_raw_event*)&event);
  if (rv < 0) {
    return rv;
  }
  if (event.inner.type != USB_RAW_EVENT_CONTROL) {
    return -1;
  }
  char* response_data = NULL;
  uint32_t response_length = 0;
  if ((event.ctrl.bRequestType & USB_DIR_IN) && event.ctrl.wLength) {
    if (!lookup_control_response(descs, resps, &event.ctrl, &response_data,
                                 &response_length)) {
      usb_raw_ep0_stall(fd);
      return -1;
    }
  } else {
    if ((event.ctrl.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD ||
        event.ctrl.bRequest == USB_REQ_SET_INTERFACE) {
      int iface_num = event.ctrl.wIndex;
      int alt_set = event.ctrl.wValue;
      int iface_index = lookup_interface(fd, iface_num, alt_set);
      if (iface_index < 0) {
      } else {
        set_interface(fd, iface_index);
      }
    }
    response_length = event.ctrl.wLength;
  }
  struct usb_raw_ep_io_data response;
  response.inner.ep = 0;
  response.inner.flags = 0;
  if (response_length > sizeof(response.data))
    response_length = 0;
  if (event.ctrl.wLength < response_length)
    response_length = event.ctrl.wLength;
  if ((event.ctrl.bRequestType & USB_DIR_IN) && !event.ctrl.wLength) {
    response_length = USB_MAX_PACKET_SIZE;
  }
  response.inner.length = response_length;
  if (response_data)
    memcpy(&response.data[0], response_data, response_length);
  else
    memset(&response.data[0], 0, response_length);
  if ((event.ctrl.bRequestType & USB_DIR_IN) && event.ctrl.wLength) {
    rv = usb_raw_ep0_write(fd, (struct usb_raw_ep_io*)&response);
  } else {
    rv = usb_raw_ep0_read(fd, (struct usb_raw_ep_io*)&response);
  }
  if (rv < 0) {
    return rv;
  }
  sleep_ms(200);
  return 0;
}

static volatile long syz_usb_ep_write(volatile long a0, volatile long a1,
                                      volatile long a2, volatile long a3)
{
  int fd = a0;
  uint8_t ep = a1;
  uint32_t len = a2;
  char* data = (char*)a3;
  int ep_handle = lookup_endpoint(fd, ep);
  if (ep_handle < 0) {
    return -1;
  }
  struct usb_raw_ep_io_data io_data;
  io_data.inner.ep = ep_handle;
  io_data.inner.flags = 0;
  if (len > sizeof(io_data.data))
    len = sizeof(io_data.data);
  io_data.inner.length = len;
  memcpy(&io_data.data[0], data, len);
  int rv = usb_raw_ep_write(fd, (struct usb_raw_ep_io*)&io_data);
  if (rv < 0) {
    return rv;
  }
  sleep_ms(200);
  return 0;
}

static void mount_cgroups(const char* dir, const char** controllers, int count)
{
  if (mkdir(dir, 0777)) {
    return;
  }
  char enabled[128] = {0};
  int i = 0;
  for (; i < count; i++) {
    if (mount("none", dir, "cgroup", 0, controllers[i])) {
      continue;
    }
    umount(dir);
    strcat(enabled, ",");
    strcat(enabled, controllers[i]);
  }
  if (enabled[0] == 0) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
    return;
  }
  if (mount("none", dir, "cgroup", 0, enabled + 1)) {
    if (rmdir(dir) && errno != EBUSY)
      exit(1);
  }
  if (chmod(dir, 0777)) {
  }
}

static void mount_cgroups2(const char** controllers, int count)
{
  if (mkdir("/syzcgroup/unified", 0777)) {
    return;
  }
  if (mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL)) {
    if (rmdir("/syzcgroup/unified") && errno != EBUSY)
      exit(1);
    return;
  }
  if (chmod("/syzcgroup/unified", 0777)) {
  }
  int control = open("/syzcgroup/unified/cgroup.subtree_control", O_WRONLY);
  if (control == -1)
    return;
  int i;
  for (i = 0; i < count; i++)
    if (write(control, controllers[i], strlen(controllers[i])) < 0) {
    }
  close(control);
}

static void setup_cgroups()
{
  const char* unified_controllers[] = {"+cpu", "+io", "+pids"};
  const char* net_controllers[] = {"net", "net_prio", "devices", "blkio",
                                   "freezer"};
  const char* cpu_controllers[] = {"cpuset", "cpuacct", "hugetlb", "rlimit",
                                   "memory"};
  if (mkdir("/syzcgroup", 0777)) {
    return;
  }
  mount_cgroups2(unified_controllers,
                 sizeof(unified_controllers) / sizeof(unified_controllers[0]));
  mount_cgroups("/syzcgroup/net", net_controllers,
                sizeof(net_controllers) / sizeof(net_controllers[0]));
  mount_cgroups("/syzcgroup/cpu", cpu_controllers,
                sizeof(cpu_controllers) / sizeof(cpu_controllers[0]));
  write_file("/syzcgroup/cpu/cgroup.clone_children", "1");
  write_file("/syzcgroup/cpu/cpuset.memory_pressure_enabled", "1");
}

static void setup_cgroups_loop()
{
  int pid = getpid();
  char file[128];
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/pids.max", cgroupdir);
  write_file(file, "32");
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
  snprintf(file, sizeof(file), "%s/memory.soft_limit_in_bytes", cgroupdir);
  write_file(file, "%d", 299 << 20);
  snprintf(file, sizeof(file), "%s/memory.limit_in_bytes", cgroupdir);
  write_file(file, "%d", 300 << 20);
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (mkdir(cgroupdir, 0777)) {
  }
  snprintf(file, sizeof(file), "%s/cgroup.procs", cgroupdir);
  write_file(file, "%d", pid);
}

static void setup_cgroups_test()
{
  char cgroupdir[64];
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/unified/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/cpu/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.cpu")) {
  }
  snprintf(cgroupdir, sizeof(cgroupdir), "/syzcgroup/net/syz%llu", procid);
  if (symlink(cgroupdir, "./cgroup.net")) {
  }
}

static void initialize_cgroups()
{
  if (mkdir("./syz-tmp/newroot/syzcgroup", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/unified", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/cpu", 0700))
    exit(1);
  if (mkdir("./syz-tmp/newroot/syzcgroup/net", 0700))
    exit(1);
  unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE;
  if (mount("/syzcgroup/unified", "./syz-tmp/newroot/syzcgroup/unified", NULL,
            bind_mount_flags, NULL)) {
  }
  if (mount("/syzcgroup/cpu", "./syz-tmp/newroot/syzcgroup/cpu", NULL,
            bind_mount_flags, NULL)) {
  }
  if (mount("/syzcgroup/net", "./syz-tmp/newroot/syzcgroup/net", NULL,
            bind_mount_flags, NULL)) {
  }
}

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

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

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

static void loop();

static void sandbox_common()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  if (getppid() == 1)
    exit(1);
  struct rlimit rlim;
  rlim.rlim_cur = rlim.rlim_max = (200 << 20);
  setrlimit(RLIMIT_AS, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 32 << 20;
  setrlimit(RLIMIT_MEMLOCK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 136 << 20;
  setrlimit(RLIMIT_FSIZE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 1 << 20;
  setrlimit(RLIMIT_STACK, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 128 << 20;
  setrlimit(RLIMIT_CORE, &rlim);
  rlim.rlim_cur = rlim.rlim_max = 256;
  setrlimit(RLIMIT_NOFILE, &rlim);
  if (unshare(CLONE_NEWNS)) {
  }
  if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) {
  }
  if (unshare(CLONE_NEWIPC)) {
  }
  if (unshare(0x02000000)) {
  }
  if (unshare(CLONE_NEWUTS)) {
  }
  if (unshare(CLONE_SYSVSEM)) {
  }
  typedef struct {
    const char* name;
    const char* value;
  } sysctl_t;
  static const sysctl_t sysctls[] = {
      {"/proc/sys/kernel/shmmax", "16777216"},
      {"/proc/sys/kernel/shmall", "536870912"},
      {"/proc/sys/kernel/shmmni", "1024"},
      {"/proc/sys/kernel/msgmax", "8192"},
      {"/proc/sys/kernel/msgmni", "1024"},
      {"/proc/sys/kernel/msgmnb", "1024"},
      {"/proc/sys/kernel/sem", "1024 1048576 500 1024"},
  };
  unsigned i;
  for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++)
    write_file(sysctls[i].name, sysctls[i].value);
}

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

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

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

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

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

static const char* setup_binfmt_misc()
{
  if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0) &&
      errno != EBUSY) {
    return NULL;
  }
  if (!write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz0:M:0:\x01::./file0:") ||
      !write_file("/proc/sys/fs/binfmt_misc/register",
                  ":syz1:M:1:\x02::./file0:POC"))
    return "write(/proc/sys/fs/binfmt_misc/register) failed";
  return NULL;
}

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

static void setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

#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)
{
  setup_loop();
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    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 < 15000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  NONFAILING(memcpy(
      (void*)0x20000000,
      "\x12\x01\x00\x00\x00\x00\x00\x40\x26\x09\x33\x33\x40\x00\x00\x00\x00\x01"
      "\x09\x02\x24\x00\x01\x00\x00\x00\x00\x09\x04\x00\x00\x01\x03\x01\x00\x00"
      "\x09\x21\x00\x00\x00\x01\x22\x01\x00\x09\x05\x81\x03\x08",
      50));
  res = -1;
  NONFAILING(res = syz_usb_connect(/*speed=*/0, /*dev_len=*/0x36,
                                   /*dev=*/0x20000000, /*conn_descs=*/0));
  if (res != -1)
    r[0] = res;
  NONFAILING(syz_usb_control_io(/*fd=*/r[0], /*descs=*/0, /*resps=*/0));
  NONFAILING(*(uint16_t*)0x20000880 = 0);
  NONFAILING(*(uint16_t*)0x20000882 = 0x4e00);
  NONFAILING(*(uint16_t*)0x20000884 = 0xc1);
  NONFAILING(*(uint16_t*)0x20000886 = 0x4e00);
  NONFAILING(memcpy(
      (void*)0x20000888,
      "\xa7\x6c\xcb\x9e\xff\x46\x94\x98\x3d\xf6\x11\xac\x03\xc6\xc2\x3d\xb1\xe3"
      "\xb8\xa3\x09\x04\xe4\x11\x01\xcd\xd2\x1d\x87\x99\x82\x69\x64\xaa\x88\x86"
      "\xe9\x36\xf6\x6f\x48\xc2\x39\x37\x91\x40\x22\x4e\xad\x55\x29\xbe\x60\xe4"
      "\xe1\x03\xee\x38\xd7\x53\x04\x3d\xae\x6f\xf2\xa1\x08\x34\x31\x38\x51\x1e"
      "\x17\x8a\x6f\xbf\xe3\xbe\x80\x2b\xaf\x1d\x00\x7c\xa1\x75\x28\xd3\x26\x30"
      "\x1c\x1a\x60\xaf\x74\xa5\xe3\x17\x28\x24\x52\x62\xab\x41\x92\xb1\xd4\x75"
      "\x7e\xc2\xfb\x54\x91\x5f\x77\x91\xbf\xfa\x73\x4d\xae\xea\x15\x8a\xcb\x4f"
      "\xb0\x3e\x46\xee\xa1\x93\xd2\xb4\x6d\x98\x75\x6c\x84\xcc\x0e\x39\x18\x61"
      "\x8c\x11\x49\x1b\x37\xf7\x2d\x16\x2d\x85\x3d\x34\x5d\x61\x88\x71\x42\x4f"
      "\xfc\x80\x0e\xda\xb5\x55\xb0\xbc\x60\x61\x48\xfb\x32\x9c\x5d\x90\x5b\x80"
      "\xdf\x39\x04\xba\x01\xe9\x0a\xc4\x63\xf9\xc3\xd9\x10",
      193));
  NONFAILING(*(uint16_t*)0x2000094c = 0);
  NONFAILING(*(uint16_t*)0x2000094e = 0x4e00);
  NONFAILING(*(uint16_t*)0x20000950 = 0xa1);
  NONFAILING(*(uint16_t*)0x20000952 = 0x4e00);
  NONFAILING(memcpy(
      (void*)0x20000954,
      "\x75\xfb\x4c\x30\x8d\x67\x0b\xfe\xd5\xd2\x33\xee\xd8\xd6\xe1\xb2\x2b\x9d"
      "\xe2\x75\xbf\x97\xe7\x45\xcb\xc7\x50\xd4\x42\x20\x2b\x41\x38\xe8\xc1\x9e"
      "\x60\x98\xab\xa4\x1a\x8e\xc2\x08\x71\x8e\x2d\xf1\x66\x76\x30\x22\xfd\x4c"
      "\x49\x30\xa5\x76\x00\xf9\x30\xbe\xc7\x12\xfa\xef\xbb\x5a\x08\x3f\xf9\x2b"
      "\xcf\xb0\x39\xc9\xc1\x64\x45\xf9\xd9\x1d\x9c\x23\xef\x84\x49\xc3\x70\x1b"
      "\xcc\x93\xd7\xa2\xac\x5e\x58\xc8\x36\x42\x51\xef\x80\xa1\xdc\x9c\xc6\xb1"
      "\x22\x88\x1c\x8e\xa6\x7c\x52\xa4\x4e\x4f\x68\x61\xd9\x20\xf6\xf4\xa1\x66"
      "\x0d\x04\xb1\xe3\xb1\xe7\x66\x83\x75\x26\x02\x04\x67\xff\x3c\x53\x28\xcb"
      "\xe2\x7e\x9c\x25\xe7\xa5\x07\x78\xe7\xfb\x9b\x27\xc9\xbe\x7b\xd9\x1a",
      161));
  NONFAILING(*(uint16_t*)0x200009f8 = 0);
  NONFAILING(*(uint16_t*)0x200009fa = 0x4e00);
  NONFAILING(*(uint16_t*)0x200009fc = 0);
  NONFAILING(*(uint16_t*)0x200009fe = 0x4e00);
  NONFAILING(*(uint16_t*)0x20000a00 = 0xf5c);
  NONFAILING(*(uint16_t*)0x20000a02 = 0x4e00);
  NONFAILING(memcpy(
      (void*)0x20000a04,
      "\x55\xd4\x5c\x41\x80\x2a\xd3\x0a\x9d\xe5\x61\xb0\x2d\xbc\xb4\x1e\xc1\x95"
      "\xc3\x4e\x66\x86\x35\xc5\x05\x7d\x66\x9c\xdf\xef\xc7\x73\x4c\xba\x39\x28"
      "\x5d\x0e\x90\x80\x9f\x58\x04\x75\x8f\x00\x5a\x19\x53\xd5\x79\x46\x21\xd5"
      "\x19\xf4\x64\x9c\x10\xae\xf7\xbf\xac\x1c\xc2\xdd\xa2\x9b\xb8\xbb\xdb\xc5"
      "\x85\xd5\x6c\x77\xab\x68\x96\xf6\x44\x78\x2e\x22\x97\xdc\x16\x08\x48\xbb"
      "\xfc\xe7\xcb\xaf\xc5\xcb\x7a\x35\xbf\x16\x53\x12\x3d\x4f\xfc\x08\xdd\xeb"
      "\x4c\xf4\x64\xab\x17\xf1\x3b\xb6\xcf\x01\xb5\x84\xcb\x4a\x8f\x64\x21\x99"
      "\x3d\x3d\x6d\x39\x7f\x0e\x4c\xc3\xe5\xa4\x98\x17\x71\x54\xe2\xfa\xa0\x96"
      "\xfb\x80\x20\x64\xae\x9c\x05\xec\x7b\x3a\x85\x00\x84\x51\x25\x14\xb4\x22"
      "\xf9\x11\xcd\x1f\x96\x4f\x70\x74\x99\x5a\x5d\x33\x2a\xf9\xe4\xfa\xbd\x6e"
      "\x0b\xfb\x00\x26\x2b\x4c\x5d\x42\xe5\xea\xa5\xc2\xd0\xa5\xbf\x35\xba\x4c"
      "\x76\xf2\xb0\x52\xa9\xae\x27\xfb\xc5\x0f\x4e\xef\xd2\xb8\xd9\xd7\xc8\xa3"
      "\x66\xa4\xe5\x82\x4a\x38\xd2\x20\xc4\x78\xba\x77\x83\x1f\x8e\xd3\x35\x5c"
      "\x10\xc2\xf2\xc6\xbe\x00\x75\xe4\xfb\xf2\x25\x21\xe6\x9f\x68\x82\x90\xff"
      "\x6a\x8c\x17\x19\xf1\x75\x4a\x68\x76\xa2\x17\x8a\x78\xcf\x8a\xa9\x3a\x57"
      "\x62\xa9\xac\x07\xf7\xe4\x5d\x0f\xd1\x4f\x5c\x42\x33\xb1\x18\x8e\x95\xd5"
      "\x14\xb6\x36\x2a\x5b\x6b\x38\x18\x76\xed\xe3\xea\x12\x06\xf1\xcb\xda\x4c"
      "\xf7\x8d\x50\x28\xf1\x0f\x1c\xc4\x3f\xa9\x7c\x08\xe7\x56\xb5\x7a\x9e\x37"
      "\xc2\xfa\xef\x46\xcf\x2c\xa6\xfd\x32\xd4\x3c\x83\xc1\x9f\x6f\xa8\x30\xac"
      "\xeb\x0b\x02\x86\xf1\xdd\xef\x59\x21\x03\x4c\xcb\x0b\xfa\x97\x48\x70\xb3"
      "\x67\x74\x7d\xe0\x9a\x6a\x88\x80\x7d\x85\x82\x2d\x70\xa1\xd2\x04\xf9\x0e"
      "\x9e\x26\xfb\xf3\x00\x60\x42\x87\x8a\x0c\x43\x66\x5e\x78\xcb\xb6\x77\x54"
      "\x02\xb2\x8a\xdb\x39\x75\x12\xe4\x9b\xb0\x9d\x80\x49\xf0\x63\x4a\x2c\x1b"
      "\x59\x31\x26\x6b\x0d\xd6\xa9\xf6\xb8\x45\x99\x48\xa5\x51\x1d\x49\xc4\xd4"
      "\x29\xae\xd9\x2f\x40\x16\x13\x0c\xc8\x5e\x1a\x4f\x95\x8f\x62\x1d\xe6\x78"
      "\x98\x0b\xea\xd0\xc5\x54\xe8\x60\x24\xc8\x1a\x5e\xe1\x46\xff\x9e\x3c\xfc"
      "\xa9\x77\xed\x26\x6c\x31\xeb\x7d\x94\x81\x8a\xf5\x28\xdc\x47\xf4\x86\x4c"
      "\xb7\xd0\xad\x69\x7b\x4f\x68\x0a\xd5\xfc\x63\xd3\xac\x03\x98\xd8\x43\xd3"
      "\xde\x28\xaf\x45\x17\x19\x77\xca\xe5\x0d\x0f\x45\xc7\xad\x6a\xbc\x3d\x13"
      "\x80\x35\xd9\x64\x0c\xe7\x96\x06\x04\x54\xa7\x80\x90\xcb\xd2\x8e\x4b\xe1"
      "\x53\xbc\xe2\x49\x0a\xd6\xb2\xdd\x46\x89\x46\x52\x37\x92\x43\x3c\xdd\xc2"
      "\x53\x14\x5e\xcc\x72\x43\xbe\x3f\xe6\x39\x20\xf9\xe6\x7e\xd9\x61\x41\x0d"
      "\x05\x68\x2b\x1e\x9a\xd3\xf5\x4f\xb0\x98\xe5\x08\x50\x7a\x2d\xc9\xc8\x7b"
      "\x44\xe2\xf5\x84\x3c\x7c\x7f\x89\xe6\x5d\x84\x40\xba\x91\x58\x1e\xe0\xf0"
      "\xd3\x03\xb6\x88\xf0\x63\x36\x1e\x99\xa4\x77\xe3\x98\x0f\x19\x72\x81\xcc"
      "\x0e\x75\x30\xcd\x11\x5c\xd0\x61\xdd\xd5\x3b\xb7\xad\xe0\x3b\x00\x21\x72"
      "\x5c\xfd\x83\x2d\x26\x56\x0d\x53\x35\xbc\xce\xab\xe1\x5d\x5a\xc3\x14\xdb"
      "\x65\x6f\x13\xaf\xce\x4c\xb8\xdb\x11\xca\xa0\x77\x75\x22\x55\xb6\x67\x0f"
      "\xb3\xc2\x12\x9d\xa9\x54\x8e\xa4\xb3\xc0\xff\x00\x01\x96\x30\x71\x00\xe3"
      "\x15\x3f\x09\xe8\xc5\x2c\x42\x7e\x65\x10\x15\xa5\x4a\x66\x44\xfa\x3b\x7a"
      "\x0e\x22\x2f\x68\x0c\xa0\x55\x91\x9e\x78\xc4\x45\x61\x57\x9b\x4f\x7f\x7e"
      "\xac\x88\xbf\x8f\x1c\x86\x3d\xde\x86\xce\x77\x34\x17\x86\x75\x48\x41\xf5"
      "\x91\x8b\x38\x32\x0b\x32\x6a\x00\xa1\x8d\x1e\x8a\x1e\x5c\xe5\x79\x23\x2f"
      "\x28\xb4\x47\x78\x82\x0d\x79\x42\x13\x5c\xc5\xa3\x7b\x1b\x40\xc7\xd3\x96"
      "\x09\x9a\x55\x65\x20\x7f\x26\xdc\x8c\x55\x3b\xbf\xa1\x1d\x72\x40\x1d\x7c"
      "\x3d\x73\xdc\x18\xcb\x31\x39\xdd\x8e\x8b\xb4\x0f\x2c\xad\xf7\x1c\x14\x8e"
      "\x75\xb0\xe3\x18\x8c\x19\x44\xf6\x63\x4d\x12\x1c\x96\x30\xbb\xd8\x44\x97"
      "\x62\xb6\xf2\x00\x5a\x50\x3f\x80\x72\x5d\xd2\x40\x97\x4f\x94\x67\x94\x1e"
      "\x3f\x12\xe4\xbb\x84\x0c\x0e\xb4\x4b\x09\x32\x21\xb4\xe6\xe9\x66\x98\x4f"
      "\x02\x3d\x00\xa4\x53\x13\xca\x24\x14\x4f\xad\x2f\x79\x8c\x99\xcf\x39\x75"
      "\xde\xb9\xe5\x84\x62\x14\xb8\x23\x63\xc1\x2c\xb8\x21\x32\x45\xfe\x09\x2d"
      "\x10\x3e\x37\x9c\xa7\x00\x36\x0e\xac\xc2\xce\xd3\xf3\x90\xa6\xd1\xa3\x2a"
      "\xef\xbb\xd9\x98\x44\x4f\x33\x8f\xeb\x28\x83\x42\x77\x8b\x82\x77\xa9\x47"
      "\x93\x56\x69\xd4\xc6\x5e\x69\xb5\x4f\x25\xed\x23\x73\x66\x75\x7e\x76\xca"
      "\xdb\x89\x64\x92\xc4\x8b\x16\x36\xce\x14\x83\x5e\x1f\xb3\xcb\x46\x5a\x44"
      "\x5a\x7e\x02\x99\x2e\x73\xce\x6b\x18\x20\x47\x16\xcc\xc7\xf7\xec\x33\xd5"
      "\xc5\x91\x63\x48\x38\x5d\x0f\x66\x76\xa1\x29\xb2\xe9\xd1\x66\x3e\xf1\x83"
      "\x1f\xea\xec\x49\xd1\xd2\x7b\xb1\x84\x88\x4a\x65\x61\x47\x39\xf7\x8b\x25"
      "\x90\x37\x3c\xf0\x13\x61\xc8\x18\x9c\xdc\x60\xfa\xd4\x5e\xaf\x65\xec\x06"
      "\x1b\xbb\xf6\x2d\x62\x70\xc4\x02\xc5\x25\x7a\xc8\x52\xe5\x37\x8e\x44\xdf"
      "\x72\x08\xf9\xd2\xf4\x67\x0e\xf4\x0d\x80\xd1\x15\xd8\x6b\xe0\xda\x17\x72"
      "\x6c\x7d\x98\x4a\xac\x46\xec\x39\x1d\xdd\xce\xa7\x20\xf1\x44\x45\x76\xd3"
      "\xf2\xbb\x62\x47\xc4\x01\x46\x22\xfe\xa9\x3d\xb0\x71\x52\x75\x71\xb3\xa0"
      "\x4f\x2a\x25\x44\x67\x8b\x3c\x14\xd7\xe1\x43\x97\xea\x86\xdd\x97\x2f\xf4"
      "\x3c\x4b\x2c\x49\xc7\x46\xf7\x8b\xa5\x0e\x60\xf2\x12\x01\x43\xd7\x59\x0c"
      "\x12\xf8\xb4\xc4\xf3\x06\x7d\x48\x92\x91\x85\xa5\xcf\x32\x20\x4d\x50\xdf"
      "\xd2\xfe\x7c\xc0\xd7\x1c\xa4\xf8\x7a\x64\xd7\x75\x3d\x12\xb5\xe9\x14\xe2"
      "\x4e\x22\xb3\xd6\x18\x5d\xd8\xfe\xe1\x8b\xae\xcc\x18\x56\x46\x2e\x14\x73"
      "\xdb\xdf\x66\x2c\xfa\xe0\xb8\x5e\x6e\x83\x27\xd0\xf2\xfb\x98\xa4\x34\x86"
      "\xdb\x46\x2c\xb9\x5e\x9f\x4a\x72\x6b\x52\x37\xf0\x87\xdf\x5c\xa3\xe1\xf1"
      "\x9c\x67\x98\x8f\x3a\xd0\x45\x0f\xd0\x29\x2e\x2d\xfc\xac\x85\xdf\x76\xc6"
      "\x38\xeb\xb0\xd6\x5c\x03\xc0\xae\x80\x65\x1c\xde\xb1\xdc\x75\xfb\x6f\x0f"
      "\x93\x7f\x27\xd2\xab\xeb\x4a\xd2\x68\xab\x23\x85\x6c\x5f\xa4\x6b\x30\xff"
      "\x23\xce\xa4\xf5\x48\x51\x95\x5d\xc8\x0c\x12\xd7\x56\x6e\x1c\x03\xc7\xbb"
      "\x06\x41\x97\xba\x33\xba\x73\xc4\xc8\x60\x51\x45\xa4\x27\x51\x12\x74\x53"
      "\x15\x82\xbe\xf8\xd6\x71\x06\x0c\xed\x84\x3c\x4f\x76\x62\xa0\x11\x9e\xeb"
      "\x0d\x82\x72\x0d\x0b\xb7\xd5\xca\xa2\xd1\xb2\x40\x0c\xf6\x5b\x67\x69\xc7"
      "\x52\xf0\x15\x06\x17\x28\xeb\x3f\x1d\x87\xea\xd1\x40\x46\x4a\xc6\xb8\x96"
      "\xf1\xda\x7d\xdb\x80\x60\x04\x09\xa9\xaf\x55\xf5\x5d\x80\x0a\xc7\x9f\xa9"
      "\xc8\x69\xd1\xcb\xd7\xe0\x58\xf4\xf4\xee\xa7\xba\x9c\xd5\xa2\xf5\x1a\xd0"
      "\xf1\x9d\x02\x75\x45\xc7\xe0\x89\x36\x39\x21\xd6\x29\xe8\x5c\xc1\x33\x7b"
      "\x9e\x8f\x60\x44\x5c\x4f\x00\x6f\x6b\x39\x60\x0e\x83\x17\x88\x21\xce\x3a"
      "\xf6\x22\x97\x99\x2c\xe6\xf8\xcd\x43\xc1\x64\x7a\xdb\xb0\x0a\x18\xfb\x99"
      "\x41\xdf\x97\xf0\x2e\x14\x5b\x74\x6d\x51\x2d\xa7\xf9\x05\x89\xd7\x80\xfb"
      "\xb9\xec\xaa\x3f\x08\x59\x71\x80\xd1\x8f\x71\x74\x7f\x47\x2e\xbe\x7b\x04"
      "\xa3\x17\x00\x49\x29\x66\x63\x2d\x60\xeb\xe1\x73\x54\x1e\xe8\xd5\x45\xc9"
      "\x2f\xaa\x56\x24\x13\x33\x19\xd3\x8f\x43\x26\x29\xad\xaf\x34\x1a\xb1\x3b"
      "\x59\xd9\xc4\xe2\xa5\x15\xf5\x1f\x51\xc0\x51\xdf\x76\xfe\x0e\xd0\xf1\x69"
      "\xf6\x47\x35\xf2\xe3\x27\x54\x67\x04\x61\xa4\x22\x51\x6c\x55\x58\x08\x4a"
      "\x77\x96\x26\x1e\x62\xde\xd0\xff\x81\x6b\xb0\xfb\x35\x16\xd6\x08\x70\x8a"
      "\x70\x84\xb9\x8b\x23\xe7\xab\xc0\x43\x6d\x4a\xde\x07\x5b\x39\x63\xac\x72"
      "\xe3\x19\x9d\x91\x0a\xbc\x73\x6c\xfe\x0e\xc1\x2e\xf7\x42\x77\x49\xe6\x6e"
      "\xc9\x32\xdf\xef\xcc\x75\x00\xec\x86\x9a\xa5\x09\x8d\x05\x8d\x36\x74\xad"
      "\x36\x7c\x98\xb6\x00\xf7\xa4\xd3\x46\x3b\x98\xed\x8e\xc8\xfe\x57\x52\xfe"
      "\x2e\xad\x9d\xd6\xe9\xa3\xe0\xb0\x4c\x38\xce\x0b\x61\x13\x37\x34\x20\x4e"
      "\x3b\x06\x09\x0e\x7b\xd0\x1c\x65\xb9\x25\xce\xad\x0c\x13\x92\x8b\x2f\x20"
      "\xc3\x79\x9d\x9c\x39\x9e\xf4\xcd\xa1\x76\xe0\x1f\xda\xb0\x39\xa8\x5b\xf0"
      "\xad\x0a\x4e\xce\x03\xda\x31\x17\x6c\xd5\x65\x73\xb5\xa1\xc6\x07\xf9\xd1"
      "\x5f\xf3\x25\xe6\xed\xf8\xe2\x41\x15\x9f\x4c\xc6\x5e\x40\x9f\xae\xca\x7c"
      "\xdd\xfe\x44\x4b\x7e\x30\xe4\xd7\x8b\x92\xce\x21\x6f\x43\x73\xfc\x07\x06"
      "\xda\x20\xfd\x1e\x7b\xd7\xbf\x67\x79\x19\x17\x74\xce\x2f\x96\x07\xf4\x01"
      "\x33\x1d\xc7\x11\x35\x04\xf1\x2c\x8a\x5f\x01\xa4\xb7\x01\x09\x13\xdc\x2f"
      "\xfb\x69\x9a\xc7\x5c\xec\xb2\x97\x10\x8e\xc3\x85\x47\x2d\x25\xa3\xb8\x6d"
      "\x6f\x3c\xdc\x62\x99\x6c\xe2\x6a\x07\xb1\x0b\xe6\x53\x40\x89\xe9\xfb\x8f"
      "\x28\x4d\x5a\x47\xc0\x54\x4b\x5f\x8b\x55\xdf\xf8\x32\xe9\xe6\xe5\xed\x32"
      "\x0b\x31\x38\xf0\xe9\xd5\x69\xd5\xc3\x20\xbb\xb2\x7c\xdd\x5e\x2f\x2e\xe5"
      "\x4e\xf6\x45\x4c\xc5\xc0\x17\x76\x1b\x18\xd8\x2f\x0d\xe5\xfc\x9b\x38\xc0"
      "\x9a\x7c\xcc\x91\x3e\xf1\xc7\x22\xe4\x1c\xf0\x4e\x56\xab\x4b\x24\xc0\xc1"
      "\xf1\xe8\x72\xfe\xdc\xe9\xfb\xa5\x1f\xf5\xe5\xba\x8f\xad\x6f\x4c\xc0\xd5"
      "\xc9\x59\x0a\x1b\x31\xd9\x25\x60\x05\x81\xc1\xea\x24\xdb\x8d\xd4\x21\x42"
      "\xeb\xf5\x18\xde\xd7\xbc\x4e\x87\xc7\x78\xcc\x23\xec\x21\x9e\x22\x19\xa9"
      "\xb3\x1b\x5f\xe0\x00\x87\x6e\x7a\xe4\x3f\x93\x5a\x0c\xd1\xfa\x57\x8c\xba"
      "\x09\x5f\xf9\x56\xba\xa4\xc3\x61\x5a\x3b\xde\x0b\x7e\x2d\xdc\x87\x6d\x9d"
      "\xe8\x52\xc5\x53\xe1\xcc\xa0\x8a\xce\x85\x36\x2f\x6f\x3d\x63\x60\xb6\xe5"
      "\x75\xaa\x06\x14\x37\x65\x22\xa7\x18\x40\x99\xbf\x0d\x6c\xb1\xd0\x88\xcf"
      "\x4b\x08\x75\x46\x59\x5d\x2d\xfe\xef\x48\x89\x48\x53\x0d\x97\x65\xc9\xc2"
      "\xee\xed\xce\x77\xde\x2c\x8c\x10\xb5\xfb\x45\x86\xf9\x42\x83\x4f\xf2\x38"
      "\x28\x38\xa3\x68\xbb\xc8\x6f\x56\xf1\x3c\x6e\x90\x8a\x7c\x72\xf1\x6c\x2e"
      "\xfc\x2a\xee\x41\xcb\x4e\xd7\x18\xb4\x11\x29\x83\xb5\xaf\xfd\x53\x8a\xb3"
      "\x50\x5e\xbd\x89\x39\x3b\xbb\x14\x73\x34\x35\xd0\x1f\x0f\xa2\x88\x0e\xfa"
      "\x19\x06\x06\x9b\x75\x5e\x1a\x97\x85\x9e\xef\x74\x5c\x14\x8b\x41\xbf\x04"
      "\x44\x24\x04\xa0\xb7\x97\x2b\x3c\xbf\x25\x47\x0d\x82\xce\x76\x42\xd7\xdf"
      "\xc3\x8d\x27\x9f\xdd\x70\xb3\x8f\x5d\x1d\x7b\xed\x66\x67\xe4\x7c\xca\xad"
      "\x03\x91\xc1\x73\x54\x23\xf9\x11\x00\xd2\xad\x90\x7f\x56\x3e\x49\x38\x93"
      "\x34\x6b\x95\x0c\xc6\x54\xfa\x39\x35\x5f\xc3\xb2\xf4\xa4\x04\xc1\x6d\x98"
      "\x90\x94\xaf\xea\x03\xda\x0c\xce\xff\xc6\xd0\xae\xe7\x96\x55\xcb\x10\x6a"
      "\x98\x1a\x96\x3a\xb5\x04\xe9\x8d\x8d\xfc\xb0\x59\xed\xca\xd6\xa5\x88\xfb"
      "\x4f\x30\x8d\x4f\x9b\x91\x43\x49\x6d\xc2\xb8\xac\x3a\x0c\xb9\x1b\x04\xc6"
      "\x2a\x4e\x4d\x35\x8a\x93\x5f\x42\xe0\xd8\xbf\xef\xd3\x72\x35\x79\x4b\xde"
      "\x31\xd2\x4a\x2f\xd0\xd4\xc2\x43\x79\xb4\x32\x48\x60\x5c\x38\xab\x09\xeb"
      "\x6e\x7d\x9c\xed\x7e\x56\x66\x33\x0d\x67\xa7\x4b\x38\x36\x53\xa2\xdb\x9b"
      "\x3f\xfa\xd9\x5a\xc2\x33\xeb\x94\xce\x52\x18\xae\xcc\xa4\x79\x1e\x29\x71"
      "\x47\xd4\x79\x3d\xd7\xef\x2e\x19\x08\x0f\x04\xbc\xb9\x4c\x8e\xce\xc8\xf0"
      "\x22\x50\x05\x88\xbc\xbc\x62\x3b\x92\x4a\x14\xbb\x17\x03\xa3\xb2\xcd\x79"
      "\x2b\x49\x1a\xca\x78\xd4\xfe\x07\x6a\x51\x1c\x68\x35\x68\xee\xe6\x21\xd8"
      "\x8d\xff\x27\xa4\x66\x07\x3f\x2c\x60\x23\xab\x61\xce\xeb\xde\xf6\xdc\xe8"
      "\x2d\x72\x9b\x54\xb3\xc8\x26\xfe\xc4\x50\xdf\x77\x93\xb7\x4a\x5f\x31\x0f"
      "\xaf\xba\x49\xcb\x3e\x32\x85\x30\xb1\x3c\x79\x59\xad\xa3\x3a\xc1\xae\xa5"
      "\xd1\x15\x0d\x8f\xe6\xa0\x6c\x86\x0c\xe0\xf7\xed\x05\xb9\xc2\xb8\x46\x28"
      "\x1f\xa2\x68\xf7\x8c\x50\xbe\x42\x32\x58\x68\x64\x44\x12\xa9\x39\xf0\xca"
      "\x81\x84\x0f\xac\xad\x87\x1a\x11\xc0\x08\x69\x37\x86\x6b\x2b\xb3\x27\x93"
      "\xbc\xd7\x8d\x7d\x36\x86\x88\x0b\xb0\x35\xb2\x4e\xbd\xa2\x41\x5f\xc9\xb2"
      "\x8f\x84\xa0\x6e\x26\x73\x09\x2b\x3e\xb3\x96\x2d\x97\x82\x05\x45\x28\xeb"
      "\xf5\x2a\x26\x30\xd0\x0f\x1f\xaf\x6f\xed\x16\x01\x1b\xab\xe5\xec\x50\x0c"
      "\x36\x9a\x66\xf9\x4b\x17\x52\xbc\xf6\x60\x65\x93\x5d\xe6\x63\xbf\x3d\x39"
      "\x33\x77\x65\x52\xbd\x30\x47\x8b\x27\x60\x8b\x9a\x21\xb0\xab\x31\x8c\x0d"
      "\x47\x9f\xfc\x99\x36\xb8\x66\x41\x61\xc7\x1b\x3b\xef\x01\x01\x92\xf8\x5b"
      "\xeb\xca\xfc\x16\x5a\xaf\x6d\x47\x2d\x92\x79\xbe\xf4\x7a\x67\xbf\x60\xc6"
      "\x33\xea\x98\x3a\x90\x9f\x47\xca\x28\x14\x0b\x1b\x19\x5f\xc3\x8c\x4a\xfd"
      "\x10\xfb\x78\x1a\x91\xa4\x12\xcb\xe1\x95\x6c\x34\x14\x0a\x55\x04\xdf\xcc"
      "\x13\xad\xe9\x42\xfa\x6c\x2a\x60\x4a\xc3\x7c\x52\x5b\xd3\x99\x71\x53\x99"
      "\xbe\x4b\x3e\x1f\xaf\x0a\xe5\x3d\x45\x98\xf0\x30\x7e\xdb\xa1\x82\xf8\x16"
      "\xad\x08\x28\x63\xcb\x72\x4e\xf4\xe2\x83\x83\x3b\xf0\xca\xb8\x6a\x2d\x74"
      "\xfc\x69\xb9\x44\x4a\x42\x60\x06\xb0\x0e\x0e\x1b\xdb\x10\xf4\x0b\x54\x37"
      "\x17\x61\xc0\xa4\x41\x58\x6c\xe8\x65\x4a\x83\xf1\x5d\xad\x88\x49\xb2\x60"
      "\xd1\x1b\x06\x40\xaa\x57\xba\x2f\x56\x91\x53\x97\xe8\x2d\xc5\xae\x0a\x08"
      "\x24\xda\x23\x1a\xf5\x08\x6a\x9d\xed\x6d\x88\x7a\xe2\xb6\xdf\x7e\x16\x95"
      "\x82\xc2\xc4\x8f\x57\x4d\xff\xa6\xc9\x48\x74\x77\x46\xca\x99\x2c\x8e\xcb"
      "\x99\x22\x24\x2b\x89\xea\xe2\xc4\xb4\x24\x70\xdd\x86\xa7\x96\xca\x95\xe9"
      "\xc7\x5c\xdb\x35\x60\x37\xa7\x32\xad\xa8\x87\x07\xca\xfe\xad\xf4\x20\x19"
      "\xc4\x27\xc7\xc0\x73\x16\xac\xaa\xfa\x1e\x30\xb0\x5c\xda\xca\xaf\x00\x46"
      "\xc3\xd0\x56\xb4\x61\xb5\x46\x70\xc4\x20\x5d\x65\x8e\x46\x8a\x3d\x36\x8b"
      "\x26\x57\x9e\xcc\xa2\xbb\x06\x2e\x21\xa3\xc1\x78\x71\xab\x91\x3e\xa9\x37"
      "\x94\x22\x09\xad\x9e\xcb\x83\xf0\xfc\x80\x76\x32\xff\x79\x99\xb5\x4d\x42"
      "\xe2\xb1\x31\x1e\x63\x20\x65\xca\xda\x66\x6d\xbd\x31\xab\x2e\xed\x65\x17"
      "\x37\xca\x61\xe1\xff\x02\xf1\xc7\x10\xa4\x7e\x74\x35\xc3\x27\xd4\x11\x71"
      "\x61\x82\xb2\xc7\x5a\x42\xdb\x69\x56\x74\x0b\x0d\x89\x12\x81\x84\x64\x5e"
      "\x3e\x5b\x51\x40\x52\x3c\x1f\xe3\x76\xf2\xa6\xaf\xfd\xae\x85\x0a\x94\x30"
      "\x3f\x2b\x7b\x67\xbb\xd5\xac\x80\xaa\x4e\xec\xd1\xe6\x9c\x1a\x02\xb4\x5a"
      "\x13\x94\x64\x77\x84\x6b\x05\x0f\x43\x4b\xdf\x41\x32\xb0\x64\xf8\x01\x3b"
      "\x11\xd9\x5e\x95\x6c\xe5\xb8\x3e\x0e\x04\x8e\x87\xa1\x02\x52\x32\xf8\x03"
      "\xe1\x8f\x39\xd5\x17\x9d\x73\xa2\xab\xa5\x5e\x9c\x12\x5a\x90\xef\x46\xc6"
      "\x1f\x82\x1c\x8f\xa3\xbb\x7d\x5c\x06\xc1\x5e\x10\x71\x93\x1a\xaf\xc2\x26"
      "\x7d\x4d\x0e\xcb\x7b\x8d\x8f\xce\xfd\x8b\xfe\xa4\xee\xf2\x61\x95\x54\x43"
      "\x52\xb0\xfa\x87\x65\x45\x6d\xe7\xa2\xd2\xe6\xd4\x3b\x44\xde\x57\x7b\xe3"
      "\x7a\xa9\x25\x75\x5c\x79\x0e\x31\xb8\xee\x0a\xc3\xd1\xc0\x34\xfc\x49\xf1"
      "\x23\x09\x72\x01\x83\xed\xe2\xf8\x37\x4c\xb5\xec\x0b\x52\x90\xb5\x76\x5a"
      "\x4d\x56\x3b\x95\x45\xb4\xce\xbd\x66\xeb\x1a\x71\xb0\xf7\x12\xd7\xa4\xdc"
      "\x56\xfc\xf3\x8b\x82\x6f\x40\xfc\xb1\xe6\xb0\x39\xb9\xa9\xa9\x64\xcc\x57"
      "\xe6\x94\xce\x0a\x12\xbc\xb8\x84\xd0\x10\xfc\x67\x73\xb4\x5c\x2d\x45\x64"
      "\xa5\xcb\x59\x98\x92\x7d\x1d\xef\x03\xf2\x59\x09\xff\x6a\x3e\x31\xda\x81"
      "\x84\x7e\xb8\x8e\x14\x2c\x85\x4f\xbc\x42\x29\xb6\x3a\x3f\xf8\x22\x4d\x12"
      "\x23\xac\x29\x67\x6f\x5c\x5b\x6b\x9c\xe2\x70\xc1\xf0\xb7\xab\x75\xc9\x17"
      "\xae\xa7\xfb\x21\xc1\xe7\x9c\xcf\xe0\x02\x84\x8a\x1b\x00\x7e\xd0\xde\x15"
      "\x6e\xdf\xba\x5e\x58\xe0\xc9\xe0\x3f\x9f\x81\x97\xe4\x9e\x8d\x70\xd0\x14"
      "\x02\xe7\x78\x57\x72\x4e\xc6\xeb\xc1\x5a\xc0\x06\x1a\x3b\x8f\xc9\x66\x1e"
      "\xa5\x47\xf7\xc3\x12\xbd\x11\x08\x67\x2b\x0d\xd9\x19\x5b\x06\xcc\x9f\xda"
      "\x32\xa6\xcc\xcf\x90\x2b\xaa\x7f\xcc\x72\x68\x5a\xf8\x76\x71\x31\x37\x5b"
      "\x08\x2f\x0f\xe3\x97\x92\xbd\xd8\x3a\x17\x17\xaf\xeb\xcf\xc0\xf4\x33\x0b"
      "\xed\x0f\x72\xa9\x41\x4e\x1f\x4d\x72\x32\x96\xac\xdb\x0a\xaf\x5f\x5e\xd4"
      "\x5f\xe5\x81\x68\x17\xae\xef\x3f\x30\xee\xaf\xce\x84\x8c\x86\x95\x50\x8b"
      "\x49\x48\x97\xed\x52\xe6\x79\xca\xb7\x7b\x25\xc6\x18\x4f\x0f\x30\x7e\x19"
      "\xa0\x58\x1e\x01\x7a\xab\x72\xcb\x5c\x64\x88\xfc\xd4\xe2\xce\x8b\x2c\x73"
      "\x0e\x4c\x0e\x03\xa4\x7b\x92\x4d\x6d\xed\xf0\xd1\x00\x75\x60\x80\x6a\x1d"
      "\x7b\x78\x01\xe0\xb2\xff\xbb\x6e\x96\x83\x34\xd0\x57\xbf\x38\xca\x68\xbd"
      "\xe3\x8c\xd5\x6a\xeb\xb6\xfe\x21\xc3\xa7\x2d\x3a\x7e\x80\x61\x9d\x36\xe1"
      "\xec\xe0\xaf\xa6\x22\x7a\x07\x85\xd8\x17\x8e\x66\x79\xbe\xd9\x44\xec\x97"
      "\xed\xd0\x02\x20\x2d\x9f\x99\x6f\xd6\xf5\x21\xea\x25\x52\x72\x21\xd6\x0e"
      "\x96\x2e\xe1\x89\x0d\x69\xde\xf2\x93\xca\xbc\x45\x19\xbb\x54\x7d\xe2\x7d"
      "\xd2\xcf\xdd\x7f\x83\x39\xd2\x8d\xa4\xf1\xb5\x50\x10\xe2\x1a\x97\x65\xe7"
      "\xb2\xab\x7d\x59\x5b\x84\x64\xfb\x61\x48\x70\x26\xb8\xfe\x61\x6c\x7c\xe2"
      "\x06\x85\x01\x1c\x39\x9e\x73\x0f\x6c\x97\x12\xfc\x5b\x4c\x04\x94\xc3\xc1"
      "\xa2\x4b\x5a\xdc\xf5\xb9\xa1\x77\xc7\xc5\x81\x80\xcc\x7c\xef\x5c\xed\xf6"
      "\x9c\x3d\x6a\x4c\x7a\xee\x24\xc9\x43\x22\xd0\x3c\x53\x29\x89\x4a\x65\x2d"
      "\xda\xeb\x49\xfb\x13\x01\x31\xe3\x50\x71\x7f\x6a\x35\x77\x3c\x14\xe0\xc7"
      "\xfc\xd1\x76\x0b\x8a\xe0\x04\x2a\x08\x7f\x2f\x76\xb4\xcf\x50\xa0\x1b\x2a"
      "\x51\xce\xe8\x4f\x09\xf6\xfd\xc3\x7a\x93\x7a\x79\xa2\xa2\x14\x26\x1b\x8a"
      "\xbe\x0d\xe8\x9d\xe4\x1d\xa6\x69\x9d\xd4\x61\xb1\xa8\xdb\xac\xcf\x6a\x33"
      "\xd0\x99\x5b\xb1\x1e\xf5\xd8\xe0\xc0\x71\xa4\xe8\xd1\x6b\x7b\x26\xea\xbc"
      "\xfa\x79\x4e\x33\x66\x0b\xa4\x83\xbf\xf0\x6a\xe0\x74\x57\xda\xc9\xc1\xbb"
      "\xb7\x4a\xb5\x1a\xd8\x8a\x57\xf7\x08\x8e\xd6\x39\x02\x7a\x90\xb9\x16\xa6"
      "\x52\x04\x9f\x52\xcb\xca\x17\xd2\x71\x1a\x5d\x7c\xf3\xe4\x62\x6d\x49\x5c"
      "\xb3\x2c\x93\x9e\xb7\xb3\x59\xe7\x48\x43\xd4\xa2\x4c\x07\x7e\xf3\x5d\x85"
      "\xde\x8e\x93\x67\x3f\xde\xf1\x80\x1d\x3b\x1f\xd9\x2f\x62\x11\x72\x54\xe7"
      "\xfa\x00\x6c\xd5\xc2\x37\x88\x82\xa3\x10\xbe\x7e\x72\x39\xcf\xc9\x71\x2f"
      "\xc4\xeb\x37\x6f\xed\xa6\x10\x96\xc4\x5d\x1e\xae\x5a\x94\xd2\xe1\x66\xd1"
      "\xc9\xd7\x4d\xa3\x68\x71\xdd\x29\x55\x1f\x85\x35\xae\xc1\xa3\x57\x6e\xc5"
      "\x7c\x5f\x90\x83\x4e\xdf\x66\x11\xb9\x1f\x47\xa5\xdb\xf0\x60\x87\xda\x47"
      "\x3d\xb7\xd7\xdc\xdc\xeb\xe4\x5f",
      3932));
  NONFAILING(*(uint16_t*)0x20001960 = 0x36);
  NONFAILING(*(uint16_t*)0x20001962 = 0x4e00);
  NONFAILING(memcpy((void*)0x20001964,
                    "\x60\x4f\x1b\x4d\xe8\x31\xf2\x18\xf3\x74\x12\xc8\x38\x97"
                    "\x9d\x29\x4b\x86\xf8\x03\x65\x04\xcd\xfd\x29\x52\x08\xbe"
                    "\xa7\x9a\x10\x40\xb7\xe9\x1f\xda\xf2\xab\x5f\x21\xdf\xf1"
                    "\x43\x79\xb4\x9c\x02\xc5\xd5\x67\x64\xe9\xda\xb0",
                    54));
  NONFAILING(syz_usb_ep_write(/*fd=*/-1, /*ep=*/0x82, /*len=*/0x111c,
                              /*data=*/0x20000880));
  NONFAILING(*(uint32_t*)0x20000080 = 0x2c);
  NONFAILING(*(uint64_t*)0x20000084 = 0x20000100);
  NONFAILING(memcpy((void*)0x20000100, "\x00\x00\x02", 3));
  NONFAILING(*(uint64_t*)0x2000008c = 0);
  NONFAILING(*(uint64_t*)0x20000094 = 0);
  NONFAILING(*(uint64_t*)0x2000009c = 0);
  NONFAILING(*(uint64_t*)0x200000a4 = 0);
  NONFAILING(
      syz_usb_control_io(/*fd=*/r[0], /*descs=*/0x20000080, /*resps=*/0));
  NONFAILING(memcpy(
      (void*)0x200002c0,
      "\xb9\x42\x5b\x44\x65\x1d\xd2\x32\x41\x96\x35\x99\x00\x00\x00\x11\x00\x00"
      "\x00\x4a\x16\x94\x1f\xf5\xf4\xb4\xf1\xf0\xad\xd7\xfc\xf2\xb8\x77\xfc\xea"
      "\xff\xff\xff\xff\xff\xf1\xff\xdf\x4c\xd9\xf5\xd3\x96\x98\x90\x52\x2c\x77"
      "\x15\x7d\x88\x01\x00\x00\x00\x3a\x5b\xd5\x53\x1d\x45\x9d\xff\xff\x03\x00"
      "\x00\x00\x00\x00\x91\xff\x00\x00\x00\xe8\xf5\xb3\x37\x1d\xa3\x63\x5b\x8b"
      "\x4f\xa6\x37\x13\x58\x00\x00\x1f\x65\xe4\xb4\x36\xaa\x9e\x50\xbc\x0f\x19"
      "\xb7\xd3\x37\x2f\xf9\xeb\xce\xde\x1f\xb5\xe9\x42\x8f\x54\xd5\xd1\xf0\xcc"
      "\x75\x2c\xf2\x46\xa5\xd2\xda\x34\xa5\xaa\x97\xdc\x14\xa4\x69\xc3\xdd\x3e"
      "\x26\xb4\x1c\x35\x64\x84\xe4\x6f\xd6\x6e\x3f\x2c\x78\x07\xe8\x77\x3e\xed"
      "\x7b\x94\xfa\x09\x9a\xb8\x4f\xea\xde\xc2\xea\x95\xf6\x5b\xba\x45\x2e\xae"
      "\x5b\x09\x00\xf9\x8a\x97\x9a\x88\xc5\x17\xa2\xdc\x36\x0a\x00\x23\x77\x23"
      "\xe2\xf4\x67\xaf\x70\x6e\xa1\x72\x26\x29\x6b\x3a\x10\xa3\x51\xcb\x47\xab"
      "\xa2\xc6\xb8\x36\xc9\x06\x79\xb4\xdd\x85\x9d\xdc\x9e\x48\x00\x44\x8a\xab"
      "\x00\x00\x00\x00\x00\x00\x0d\x75\xf3\x4b\xb5\x0d\x8d\x70\x84",
      249));
  NONFAILING(syz_usb_ep_write(/*fd=*/r[0], /*ep=*/0x81, /*len=*/0xffffff75,
                              /*data=*/0x200002c0));
}
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);
  setup_sysctl();
  setup_cgroups();
  const char* reason;
  (void)reason;
  if ((reason = setup_binfmt_misc()))
    printf("the reproducer may not work as expected: binfmt_misc setup failed: "
           "%s\n",
           reason);
  if ((reason = setup_usb()))
    printf("the reproducer may not work as expected: USB injection setup "
           "failed: %s\n",
           reason);
  if ((reason = setup_swap()))
    printf("the reproducer may not work as expected: swap setup failed: %s\n",
           reason);
  install_segv_handler();
  for (procid = 0; procid < 2; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}