// https://syzkaller.appspot.com/bug?id=4eff52538c71b39676731e9cf84c0eff42f9dc5e
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <pthread.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/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/futex.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>

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 void thread_start(void* (*fn)(void*), void* arg)
{
  pthread_t th;
  pthread_attr_t attr;
  pthread_attr_init(&attr);
  pthread_attr_setstacksize(&attr, 128 << 10);
  int i = 0;
  for (; i < 100; i++) {
    if (pthread_create(&th, &attr, fn, arg) == 0) {
      pthread_attr_destroy(&attr);
      return;
    }
    if (errno == EAGAIN) {
      usleep(50);
      continue;
    }
    break;
  }
  exit(1);
}

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

typedef struct {
  int state;
} event_t;

static void event_init(event_t* ev)
{
  ev->state = 0;
}

static void event_reset(event_t* ev)
{
  ev->state = 0;
}

static void event_set(event_t* ev)
{
  if (ev->state)
    exit(1);
  __atomic_store_n(&ev->state, 1, __ATOMIC_RELEASE);
  syscall(SYS_futex, &ev->state, FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1000000);
}

static void event_wait(event_t* ev)
{
  while (!__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, 0);
}

static int event_isset(event_t* ev)
{
  return __atomic_load_n(&ev->state, __ATOMIC_ACQUIRE);
}

static int event_timedwait(event_t* ev, uint64_t timeout)
{
  uint64_t start = current_time_ms();
  uint64_t now = start;
  for (;;) {
    uint64_t remain = timeout - (now - start);
    struct timespec ts;
    ts.tv_sec = remain / 1000;
    ts.tv_nsec = (remain % 1000) * 1000 * 1000;
    syscall(SYS_futex, &ev->state, FUTEX_WAIT | FUTEX_PRIVATE_FLAG, 0, &ts);
    if (__atomic_load_n(&ev->state, __ATOMIC_ACQUIRE))
      return 1;
    now = current_time_ms();
    if (now - start > timeout)
      return 0;
  }
}

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 unsigned int queue_count = 2;

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_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  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_attr(nlmsg, IFLA_NUM_TX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_attr(nlmsg, IFLA_NUM_RX_QUEUES, &queue_count, sizeof(queue_count));
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  netlink_done(nlmsg);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
}

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

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

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

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

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

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

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

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

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

static int netlink_add_addr(struct nlmsg* nlmsg, int sock, const char* dev,
                            const void* addr, int addrsize)
{
  struct ifaddrmsg hdr;
  memset(&hdr, 0, sizeof(hdr));
  hdr.ifa_family = addrsize == 4 ? AF_INET : AF_INET6;
  hdr.ifa_prefixlen = addrsize == 4 ? 24 : 120;
  hdr.ifa_scope = RT_SCOPE_UNIVERSE;
  hdr.ifa_index = if_nametoindex(dev);
  netlink_init(nlmsg, RTM_NEWADDR, NLM_F_CREATE | NLM_F_REPLACE, &hdr,
               sizeof(hdr));
  netlink_attr(nlmsg, IFA_LOCAL, addr, addrsize);
  netlink_attr(nlmsg, IFA_ADDRESS, addr, addrsize);
  return netlink_send(nlmsg, sock);
}

static void netlink_add_addr4(struct nlmsg* nlmsg, int sock, const char* dev,
                              const char* addr)
{
  struct in_addr in_addr;
  inet_pton(AF_INET, addr, &in_addr);
  int err = netlink_add_addr(nlmsg, sock, dev, &in_addr, sizeof(in_addr));
  if (err < 0) {
  }
}

static void netlink_add_addr6(struct nlmsg* nlmsg, int sock, const char* dev,
                              const char* addr)
{
  struct in6_addr in6_addr;
  inet_pton(AF_INET6, addr, &in6_addr);
  int err = netlink_add_addr(nlmsg, sock, dev, &in6_addr, sizeof(in6_addr));
  if (err < 0) {
  }
}

static struct nlmsg nlmsg;

#define DEVLINK_FAMILY_NAME "devlink"

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

static struct nlmsg nlmsg2;

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

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

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

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

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

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

error:
  close(sock);
}

static void initialize_netdevices(void)
{
  char netdevsim[16];
  sprintf(netdevsim, "netdevsim%d", (int)procid);
  struct {
    const char* type;
    const char* dev;
  } devtypes[] = {
      {"ip6gretap", "ip6gretap0"}, {"bridge", "bridge0"}, {"vcan", "vcan0"},
      {"bond", "bond0"},           {"team", "team0"},     {"dummy", "dummy0"},
      {"nlmon", "nlmon0"},         {"caif", "caif0"},     {"batadv", "batadv0"},
      {"vxcan", "vxcan1"},         {"veth", 0},           {"wireguard", "wg0"},
      {"wireguard", "wg1"},        {"wireguard", "wg2"},
  };
  const char* devmasters[] = {"bridge", "bond", "team", "batadv"};
  struct {
    const char* name;
    int macsize;
    bool noipv6;
  } devices[] = {
      {"lo", ETH_ALEN},
      {"sit0", 0},
      {"bridge0", ETH_ALEN},
      {"vcan0", 0, true},
      {"tunl0", 0},
      {"gre0", 0},
      {"gretap0", ETH_ALEN},
      {"ip_vti0", 0},
      {"ip6_vti0", 0},
      {"ip6tnl0", 0},
      {"ip6gre0", 0},
      {"ip6gretap0", ETH_ALEN},
      {"erspan0", ETH_ALEN},
      {"bond0", ETH_ALEN},
      {"veth0", ETH_ALEN},
      {"veth1", ETH_ALEN},
      {"team0", ETH_ALEN},
      {"veth0_to_bridge", ETH_ALEN},
      {"veth1_to_bridge", ETH_ALEN},
      {"veth0_to_bond", ETH_ALEN},
      {"veth1_to_bond", ETH_ALEN},
      {"veth0_to_team", ETH_ALEN},
      {"veth1_to_team", ETH_ALEN},
      {"veth0_to_hsr", ETH_ALEN},
      {"veth1_to_hsr", ETH_ALEN},
      {"hsr0", 0},
      {"dummy0", ETH_ALEN},
      {"nlmon0", 0},
      {"vxcan0", 0, true},
      {"vxcan1", 0, true},
      {"caif0", ETH_ALEN},
      {"batadv0", ETH_ALEN},
      {netdevsim, ETH_ALEN},
      {"xfrm0", ETH_ALEN},
      {"veth0_virt_wifi", ETH_ALEN},
      {"veth1_virt_wifi", ETH_ALEN},
      {"virt_wifi0", ETH_ALEN},
      {"veth0_vlan", ETH_ALEN},
      {"veth1_vlan", ETH_ALEN},
      {"vlan0", ETH_ALEN},
      {"vlan1", ETH_ALEN},
      {"macvlan0", ETH_ALEN},
      {"macvlan1", ETH_ALEN},
      {"ipvlan0", ETH_ALEN},
      {"ipvlan1", ETH_ALEN},
      {"veth0_macvtap", ETH_ALEN},
      {"veth1_macvtap", ETH_ALEN},
      {"macvtap0", ETH_ALEN},
      {"macsec0", ETH_ALEN},
      {"veth0_to_batadv", ETH_ALEN},
      {"veth1_to_batadv", ETH_ALEN},
      {"batadv_slave_0", ETH_ALEN},
      {"batadv_slave_1", ETH_ALEN},
      {"geneve0", ETH_ALEN},
      {"geneve1", ETH_ALEN},
      {"wg0", 0},
      {"wg1", 0},
      {"wg2", 0},
  };
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++)
    netlink_add_device(&nlmsg, sock, devtypes[i].type, devtypes[i].dev);
  for (i = 0; i < sizeof(devmasters) / (sizeof(devmasters[0])); i++) {
    char master[32], slave0[32], veth0[32], slave1[32], veth1[32];
    sprintf(slave0, "%s_slave_0", devmasters[i]);
    sprintf(veth0, "veth0_to_%s", devmasters[i]);
    netlink_add_veth(&nlmsg, sock, slave0, veth0);
    sprintf(slave1, "%s_slave_1", devmasters[i]);
    sprintf(veth1, "veth1_to_%s", devmasters[i]);
    netlink_add_veth(&nlmsg, sock, slave1, veth1);
    sprintf(master, "%s0", devmasters[i]);
    netlink_device_change(&nlmsg, sock, slave0, false, master, 0, 0, NULL);
    netlink_device_change(&nlmsg, sock, slave1, false, master, 0, 0, NULL);
  }
  netlink_add_xfrm(&nlmsg, sock, "xfrm0");
  netlink_device_change(&nlmsg, sock, "bridge_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "bridge_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "hsr_slave_0", "veth0_to_hsr");
  netlink_add_veth(&nlmsg, sock, "hsr_slave_1", "veth1_to_hsr");
  netlink_add_hsr(&nlmsg, sock, "hsr0", "hsr_slave_0", "hsr_slave_1");
  netlink_device_change(&nlmsg, sock, "hsr_slave_0", true, 0, 0, 0, NULL);
  netlink_device_change(&nlmsg, sock, "hsr_slave_1", true, 0, 0, 0, NULL);
  netlink_add_veth(&nlmsg, sock, "veth0_virt_wifi", "veth1_virt_wifi");
  netlink_add_linked(&nlmsg, sock, "virt_wifi", "virt_wifi0",
                     "veth1_virt_wifi");
  netlink_add_veth(&nlmsg, sock, "veth0_vlan", "veth1_vlan");
  netlink_add_vlan(&nlmsg, sock, "vlan0", "veth0_vlan", 0, htons(ETH_P_8021Q));
  netlink_add_vlan(&nlmsg, sock, "vlan1", "veth0_vlan", 1, htons(ETH_P_8021AD));
  netlink_add_macvlan(&nlmsg, sock, "macvlan0", "veth1_vlan");
  netlink_add_macvlan(&nlmsg, sock, "macvlan1", "veth1_vlan");
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan0", "veth0_vlan", IPVLAN_MODE_L2, 0);
  netlink_add_ipvlan(&nlmsg, sock, "ipvlan1", "veth0_vlan", IPVLAN_MODE_L3S,
                     IPVLAN_F_VEPA);
  netlink_add_veth(&nlmsg, sock, "veth0_macvtap", "veth1_macvtap");
  netlink_add_linked(&nlmsg, sock, "macvtap", "macvtap0", "veth0_macvtap");
  netlink_add_linked(&nlmsg, sock, "macsec", "macsec0", "veth1_macvtap");
  char addr[32];
  sprintf(addr, DEV_IPV4, 14 + 10);
  struct in_addr geneve_addr4;
  if (inet_pton(AF_INET, addr, &geneve_addr4) <= 0)
    exit(1);
  struct in6_addr geneve_addr6;
  if (inet_pton(AF_INET6, "fc00::01", &geneve_addr6) <= 0)
    exit(1);
  netlink_add_geneve(&nlmsg, sock, "geneve0", 0, &geneve_addr4, 0);
  netlink_add_geneve(&nlmsg, sock, "geneve1", 1, 0, &geneve_addr6);
  netdevsim_add((int)procid, 4);
  netlink_wireguard_setup();
  for (i = 0; i < sizeof(devices) / (sizeof(devices[0])); i++) {
    char addr[32];
    sprintf(addr, DEV_IPV4, i + 10);
    netlink_add_addr4(&nlmsg, sock, devices[i].name, addr);
    if (!devices[i].noipv6) {
      sprintf(addr, DEV_IPV6, i + 10);
      netlink_add_addr6(&nlmsg, sock, devices[i].name, addr);
    }
    uint64_t macaddr = DEV_MAC + ((i + 10ull) << 40);
    netlink_device_change(&nlmsg, sock, devices[i].name, true, 0, &macaddr,
                          devices[i].macsize, NULL);
  }
  close(sock);
}
static void initialize_netdevices_init(void)
{
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1)
    exit(1);
  struct {
    const char* type;
    int macsize;
    bool noipv6;
    bool noup;
  } devtypes[] = {
      {"nr", 7, true},
      {"rose", 5, true, true},
  };
  unsigned i;
  for (i = 0; i < sizeof(devtypes) / sizeof(devtypes[0]); i++) {
    char dev[32], addr[32];
    sprintf(dev, "%s%d", devtypes[i].type, (int)procid);
    sprintf(addr, "172.30.%d.%d", i, (int)procid + 1);
    netlink_add_addr4(&nlmsg, sock, dev, addr);
    if (!devtypes[i].noipv6) {
      sprintf(addr, "fe88::%02x:%02x", i, (int)procid + 1);
      netlink_add_addr6(&nlmsg, sock, dev, addr);
    }
    int macsize = devtypes[i].macsize;
    uint64_t macaddr = 0xbbbbbb +
                       ((unsigned long long)i << (8 * (macsize - 2))) +
                       (procid << (8 * (macsize - 1)));
    netlink_device_change(&nlmsg, sock, dev, !devtypes[i].noup, 0, &macaddr,
                          macsize, NULL);
  }
  close(sock);
}

#define MAX_FDS 30

#define 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 long syz_open_dev(volatile long a0, volatile long a1, volatile long a2)
{
  if (a0 == 0xc || a0 == 0xb) {
    char buf[128];
    sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1,
            (uint8_t)a2);
    return open(buf, O_RDWR, 0);
  } else {
    unsigned long nb = a1;
    char buf[1024];
    char* hash;
    strncpy(buf, (char*)a0, sizeof(buf) - 1);
    buf[sizeof(buf) - 1] = 0;
    while ((hash = strchr(buf, '#'))) {
      *hash = '0' + (char)(nb % 10);
      nb /= 10;
    }
    return open(buf, a2 & ~O_CREAT, 0);
  }
}

#define XT_TABLE_SIZE 1536
#define XT_MAX_ENTRIES 10

struct xt_counters {
  uint64_t pcnt, bcnt;
};

struct ipt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_entries;
  unsigned int size;
};

struct ipt_get_entries {
  char name[32];
  unsigned int size;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct ipt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[5];
  unsigned int underflow[5];
  unsigned int num_counters;
  struct xt_counters* counters;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct ipt_table_desc {
  const char* name;
  struct ipt_getinfo info;
  struct ipt_replace replace;
};

static struct ipt_table_desc ipv4_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

static struct ipt_table_desc ipv6_tables[] = {
    {.name = "filter"}, {.name = "nat"},      {.name = "mangle"},
    {.name = "raw"},    {.name = "security"},
};

#define IPT_BASE_CTL 64
#define IPT_SO_SET_REPLACE (IPT_BASE_CTL)
#define IPT_SO_GET_INFO (IPT_BASE_CTL)
#define IPT_SO_GET_ENTRIES (IPT_BASE_CTL + 1)

struct arpt_getinfo {
  char name[32];
  unsigned int valid_hooks;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_entries;
  unsigned int size;
};

struct arpt_get_entries {
  char name[32];
  unsigned int size;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct arpt_replace {
  char name[32];
  unsigned int valid_hooks;
  unsigned int num_entries;
  unsigned int size;
  unsigned int hook_entry[3];
  unsigned int underflow[3];
  unsigned int num_counters;
  struct xt_counters* counters;
  uint64_t entrytable[XT_TABLE_SIZE / sizeof(uint64_t)];
};

struct arpt_table_desc {
  const char* name;
  struct arpt_getinfo info;
  struct arpt_replace replace;
};

static struct arpt_table_desc arpt_tables[] = {
    {.name = "filter"},
};

#define ARPT_BASE_CTL 96
#define ARPT_SO_SET_REPLACE (ARPT_BASE_CTL)
#define ARPT_SO_GET_INFO (ARPT_BASE_CTL)
#define ARPT_SO_GET_ENTRIES (ARPT_BASE_CTL + 1)

static void checkpoint_iptables(struct ipt_table_desc* tables, int num_tables,
                                int family, int level)
{
  int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (int i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    struct ipt_get_entries entries;
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_iptables(struct ipt_table_desc* tables, int num_tables,
                           int family, int level)
{
  int fd = socket(family, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (int i = 0; i < num_tables; i++) {
    struct ipt_table_desc* table = &tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    struct ipt_getinfo info;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    socklen_t optlen = sizeof(info);
    if (getsockopt(fd, level, IPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      struct ipt_get_entries entries;
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, level, IPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    }
    struct xt_counters counters[XT_MAX_ENTRIES];
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, level, IPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_arptables(void)
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    strcpy(table->info.name, table->name);
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &table->info, &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->info.size > sizeof(table->replace.entrytable))
      exit(1);
    if (table->info.num_entries > XT_MAX_ENTRIES)
      exit(1);
    struct arpt_get_entries entries;
    memset(&entries, 0, sizeof(entries));
    strcpy(entries.name, table->name);
    entries.size = table->info.size;
    optlen = sizeof(entries) - sizeof(entries.entrytable) + table->info.size;
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
      exit(1);
    table->replace.valid_hooks = table->info.valid_hooks;
    table->replace.num_entries = table->info.num_entries;
    table->replace.size = table->info.size;
    memcpy(table->replace.hook_entry, table->info.hook_entry,
           sizeof(table->replace.hook_entry));
    memcpy(table->replace.underflow, table->info.underflow,
           sizeof(table->replace.underflow));
    memcpy(table->replace.entrytable, entries.entrytable, table->info.size);
  }
  close(fd);
}

static void reset_arptables()
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(arpt_tables) / sizeof(arpt_tables[0]); i++) {
    struct arpt_table_desc* table = &arpt_tables[i];
    if (table->info.valid_hooks == 0)
      continue;
    struct arpt_getinfo info;
    memset(&info, 0, sizeof(info));
    strcpy(info.name, table->name);
    socklen_t optlen = sizeof(info);
    if (getsockopt(fd, SOL_IP, ARPT_SO_GET_INFO, &info, &optlen))
      exit(1);
    if (memcmp(&table->info, &info, sizeof(table->info)) == 0) {
      struct arpt_get_entries entries;
      memset(&entries, 0, sizeof(entries));
      strcpy(entries.name, table->name);
      entries.size = table->info.size;
      optlen = sizeof(entries) - sizeof(entries.entrytable) + entries.size;
      if (getsockopt(fd, SOL_IP, ARPT_SO_GET_ENTRIES, &entries, &optlen))
        exit(1);
      if (memcmp(table->replace.entrytable, entries.entrytable,
                 table->info.size) == 0)
        continue;
    } else {
    }
    struct xt_counters counters[XT_MAX_ENTRIES];
    table->replace.num_counters = info.num_entries;
    table->replace.counters = counters;
    optlen = sizeof(table->replace) - sizeof(table->replace.entrytable) +
             table->replace.size;
    if (setsockopt(fd, SOL_IP, ARPT_SO_SET_REPLACE, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

#define NF_BR_NUMHOOKS 6
#define EBT_TABLE_MAXNAMELEN 32
#define EBT_CHAIN_MAXNAMELEN 32
#define EBT_BASE_CTL 128
#define EBT_SO_SET_ENTRIES (EBT_BASE_CTL)
#define EBT_SO_GET_INFO (EBT_BASE_CTL)
#define EBT_SO_GET_ENTRIES (EBT_SO_GET_INFO + 1)
#define EBT_SO_GET_INIT_INFO (EBT_SO_GET_ENTRIES + 1)
#define EBT_SO_GET_INIT_ENTRIES (EBT_SO_GET_INIT_INFO + 1)

struct ebt_replace {
  char name[EBT_TABLE_MAXNAMELEN];
  unsigned int valid_hooks;
  unsigned int nentries;
  unsigned int entries_size;
  struct ebt_entries* hook_entry[NF_BR_NUMHOOKS];
  unsigned int num_counters;
  struct ebt_counter* counters;
  char* entries;
};

struct ebt_entries {
  unsigned int distinguisher;
  char name[EBT_CHAIN_MAXNAMELEN];
  unsigned int counter_offset;
  int policy;
  unsigned int nentries;
  char data[0] __attribute__((aligned(__alignof__(struct ebt_replace))));
};

struct ebt_table_desc {
  const char* name;
  struct ebt_replace replace;
  char entrytable[XT_TABLE_SIZE];
};

static struct ebt_table_desc ebt_tables[] = {
    {.name = "filter"},
    {.name = "nat"},
    {.name = "broute"},
};

static void checkpoint_ebtables(void)
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (size_t i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    strcpy(table->replace.name, table->name);
    socklen_t optlen = sizeof(table->replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_INFO, &table->replace,
                   &optlen)) {
      switch (errno) {
      case EPERM:
      case ENOENT:
      case ENOPROTOOPT:
        continue;
      }
      exit(1);
    }
    if (table->replace.entries_size > sizeof(table->entrytable))
      exit(1);
    table->replace.num_counters = 0;
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INIT_ENTRIES, &table->replace,
                   &optlen))
      exit(1);
  }
  close(fd);
}

static void reset_ebtables()
{
  int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (fd == -1) {
    switch (errno) {
    case EAFNOSUPPORT:
    case ENOPROTOOPT:
    case ENOENT:
      return;
    }
    exit(1);
  }
  for (unsigned i = 0; i < sizeof(ebt_tables) / sizeof(ebt_tables[0]); i++) {
    struct ebt_table_desc* table = &ebt_tables[i];
    if (table->replace.valid_hooks == 0)
      continue;
    struct ebt_replace replace;
    memset(&replace, 0, sizeof(replace));
    strcpy(replace.name, table->name);
    socklen_t optlen = sizeof(replace);
    if (getsockopt(fd, SOL_IP, EBT_SO_GET_INFO, &replace, &optlen))
      exit(1);
    replace.num_counters = 0;
    table->replace.entries = 0;
    for (unsigned h = 0; h < NF_BR_NUMHOOKS; h++)
      table->replace.hook_entry[h] = 0;
    if (memcmp(&table->replace, &replace, sizeof(table->replace)) == 0) {
      char entrytable[XT_TABLE_SIZE];
      memset(&entrytable, 0, sizeof(entrytable));
      replace.entries = entrytable;
      optlen = sizeof(replace) + replace.entries_size;
      if (getsockopt(fd, SOL_IP, EBT_SO_GET_ENTRIES, &replace, &optlen))
        exit(1);
      if (memcmp(table->entrytable, entrytable, replace.entries_size) == 0)
        continue;
    }
    for (unsigned j = 0, h = 0; h < NF_BR_NUMHOOKS; h++) {
      if (table->replace.valid_hooks & (1 << h)) {
        table->replace.hook_entry[h] =
            (struct ebt_entries*)table->entrytable + j;
        j++;
      }
    }
    table->replace.entries = table->entrytable;
    optlen = sizeof(table->replace) + table->replace.entries_size;
    if (setsockopt(fd, SOL_IP, EBT_SO_SET_ENTRIES, &table->replace, optlen))
      exit(1);
  }
  close(fd);
}

static void checkpoint_net_namespace(void)
{
  checkpoint_ebtables();
  checkpoint_arptables();
  checkpoint_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                      AF_INET, SOL_IP);
  checkpoint_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                      AF_INET6, SOL_IPV6);
}

static void reset_net_namespace(void)
{
  reset_ebtables();
  reset_arptables();
  reset_iptables(ipv4_tables, sizeof(ipv4_tables) / sizeof(ipv4_tables[0]),
                 AF_INET, SOL_IP);
  reset_iptables(ipv6_tables, sizeof(ipv6_tables) / sizeof(ipv6_tables[0]),
                 AF_INET6, SOL_IPV6);
}

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

static void setup_gadgetfs()
{
  if (mkdir("/dev/gadgetfs", 0777)) {
  }
  if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) {
  }
}

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_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();
  checkpoint_net_namespace();
}

static void reset_loop()
{
  reset_net_namespace();
}

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

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

static const char* setup_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[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/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"},
      {"/sys/kernel/debug/failslab/task-filter", "Y"},
      {"/sys/kernel/debug/fail_page_alloc/task-filter", "Y"},
      {"/sys/kernel/debug/fail_futex/task-filter", "Y"},
      {"/sys/kernel/debug/fail_usercopy/task-filter", "Y"},
      {"/sys/kernel/debug/fail_make_request/task-filter", "Y"},
      {"/sys/kernel/debug/fail_io_timeout/task-filter", "Y"},
      {"/sys/kernel/debug/fail_iommufd/task-filter", "Y"},
      {"/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;
}

struct thread_t {
  int created, call;
  event_t ready, done;
};

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

static void* thr(void* arg)
{
  struct thread_t* th = (struct thread_t*)arg;
  for (;;) {
    event_wait(&th->ready);
    event_reset(&th->ready);
    execute_call(th->call);
    __atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
    event_set(&th->done);
  }
  return 0;
}

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 16; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      if (call == 12 || call == 13 || call == 14 || call == 15)
        break;
      event_timedwait(&th->done,
                      50 + (call == 1 ? 3000 : 0) + (call == 2 ? 300 : 0) +
                          (call == 3 ? 3000 : 0) + (call == 4 ? 300 : 0) +
                          (call == 5 ? 300 : 0) + (call == 6 ? 300 : 0) +
                          (call == 9 ? 3000 : 0) + (call == 10 ? 300 : 0) +
                          (call == 11 ? 300 : 0) + (call == 13 ? 3000 : 0) +
                          (call == 14 ? 300 : 0) + (call == 15 ? 3000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

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);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  ioctl$HIDIOCGRDESCSIZE arguments: [
    //    fd: fd_hidraw (resource)
    //    cmd: const = 0x80044801 (4 bytes)
    //    arg: ptr[out, int32] {
    //      int32 = 0x0 (4 bytes)
    //    }
    //  ]
    syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x80044801,
            /*arg=*/0x200000000100ul);
    break;
  case 1:
    //  syz_usb_connect arguments: [
    //    speed: usb_device_speed = 0x0 (8 bytes)
    //    dev_len: len = 0x39 (8 bytes)
    //    dev: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {12 01 00 02 00 00 00 40 d1 18 af 1e 00 00 01
    //          02 03 01 09 02 27 00 01 01 00 80 fa 09 04 00 00 03 ff ff ff 00
    //          07 05 81 02 00 02 00 07 05 82 02 00 02 00 07 05 03 02} (length
    //          0x36)
    //        }
    //      }
    //    }
    //    conn_descs: nil
    //  ]
    //  returns fd_usb
    NONFAILING(memcpy((void*)0x200000000000,
                      "\x12\x01\x00\x02\x00\x00\x00\x40\xd1\x18\xaf\x1e\x00\x00"
                      "\x01\x02\x03\x01\x09\x02\x27\x00\x01\x01\x00\x80\xfa\x09"
                      "\x04\x00\x00\x03\xff\xff\xff\x00\x07\x05\x81\x02\x00\x02"
                      "\x00\x07\x05\x82\x02\x00\x02\x00\x07\x05\x03\x02",
                      54));
    res = -1;
    NONFAILING(res = syz_usb_connect(/*speed=*/0, /*dev_len=*/0x39,
                                     /*dev=*/0x200000000000, /*conn_descs=*/0));
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    //  syz_usb_ep_write arguments: [
    //    fd: fd_usb (resource)
    //    ep: int8 = 0x3 (1 bytes)
    //    len: len = 0x8 (8 bytes)
    //    data: ptr[in, buffer] {
    //      buffer: {62 18 81 10 53 79 a0 6b} (length 0x8)
    //    }
    //  ]
    NONFAILING(
        memcpy((void*)0x200000000040, "\x62\x18\x81\x10\x53\x79\xa0\x6b", 8));
    NONFAILING(syz_usb_ep_write(/*fd=*/r[0], /*ep=*/3, /*len=*/8,
                                /*data=*/0x200000000040));
    break;
  case 3:
    //  syz_usb_connect arguments: [
    //    speed: usb_device_speed = 0x0 (8 bytes)
    //    dev_len: len = 0x2d (8 bytes)
    //    dev: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYRES64: ANYRES64 (resource)
    //        }
    //      }
    //    }
    //    conn_descs: nil
    //  ]
    //  returns fd_usb
    NONFAILING(*(uint64_t*)0x200000000040 = r[0]);
    res = -1;
    NONFAILING(res = syz_usb_connect(/*speed=*/0, /*dev_len=*/0x2d,
                                     /*dev=*/0x200000000040, /*conn_descs=*/0));
    if (res != -1)
      r[1] = res;
    break;
  case 4:
    //  syz_usb_ep_write$ath9k_ep1 arguments: [
    //    fd: fd_usb_ath9k (resource)
    //    ep: const = 0x82 (1 bytes)
    //    len: bytesize = 0x0 (8 bytes)
    //    data: nil
    //  ]
    NONFAILING(
        syz_usb_ep_write(/*fd=*/r[1], /*ep=*/0x82, /*len=*/0, /*data=*/0));
    break;
  case 5:
    //  syz_usb_control_io$cdc_ecm arguments: [
    //    fd: fd_usb_cdc_ecm (resource)
    //    descs: nil
    //    resps: ptr[in, vusb_responses_cdc_ecm] {
    //      vusb_responses_cdc_ecm {
    //        len: len = 0x1c (4 bytes)
    //        generic: ptr[in, vusb_response_generic] {
    //          vusb_response_generic {
    //            type: usb_request_types = 0x20 (1 bytes)
    //            req: usb_requests = 0x18 (1 bytes)
    //            len: bytesize = 0x2 (4 bytes)
    //            data: buffer: {02 00} (length 0x2)
    //          }
    //        }
    //        USB_REQ_GET_INTERFACE: nil
    //        USB_REQ_GET_CONFIGURATION: nil
    //      }
    //    }
    //  ]
    NONFAILING(*(uint32_t*)0x200000000080 = 0x1c);
    NONFAILING(*(uint64_t*)0x200000000084 = 0x2000000000c0);
    NONFAILING(*(uint8_t*)0x2000000000c0 = 0x20);
    NONFAILING(*(uint8_t*)0x2000000000c1 = 0x18);
    NONFAILING(*(uint32_t*)0x2000000000c2 = 2);
    NONFAILING(memcpy((void*)0x2000000000c6, "\x02\x00", 2));
    NONFAILING(*(uint64_t*)0x20000000008c = 0);
    NONFAILING(*(uint64_t*)0x200000000094 = 0);
    NONFAILING(
        syz_usb_control_io(/*fd=*/r[0], /*descs=*/0, /*resps=*/0x200000000080));
    break;
  case 6:
    //  syz_usb_control_io$lan78xx arguments: [
    //    fd: fd_usb_lan78xx (resource)
    //    descs: nil
    //    resps: nil
    //  ]
    NONFAILING(syz_usb_control_io(/*fd=*/r[0], /*descs=*/0, /*resps=*/0));
    break;
  case 7:
    //  syz_open_dev$hidraw arguments: [
    //    dev: ptr[in, buffer] {
    //      buffer: {2f 64 65 76 2f 68 69 64 72 61 77 23 00} (length 0xd)
    //    }
    //    id: intptr = 0x3 (8 bytes)
    //    flags: open_flags = 0x300 (8 bytes)
    //  ]
    //  returns fd_hidraw
    NONFAILING(memcpy((void*)0x2000000006c0, "/dev/hidraw#\000", 13));
    res = -1;
    NONFAILING(res = syz_open_dev(/*dev=*/0x2000000006c0, /*id=*/3,
                                  /*flags=O_TRUNC|O_NOCTTY*/ 0x300));
    if (res != -1)
      r[2] = res;
    break;
  case 8:
    //  ioctl$HIDIOCGRDESC arguments: [
    //    fd: fd_hidraw (resource)
    //    cmd: const = 0x90044802 (4 bytes)
    //    arg: ptr[inout, hidraw_report_descriptor] {
    //      hidraw_report_descriptor {
    //        size: bytesize = 0xbe2 (4 bytes)
    //        value: buffer: {c7 7f da ce 6d 0f 08 d3 30 a8 c0 35 34 c2 11 fb 2d
    //        b8 ff 69 67 d0 25 b4 c0 50 d8 d5 4d eb ea ab 55 a0 af d0 27 97 7e
    //        80 a8 38 cf 4a 36 88 a9 dc c3 99 70 9c c3 c7 e3 ea 3d 2d ee d7 69
    //        ad 01 33 11 8f a8 0c a6 dc 68 3f 34 44 67 d6 8f 3e 6d 78 22 8e fd
    //        0a c6 9b c0 74 20 18 1e 90 1c 5b 82 a3 6a a3 ee 8e 46 eb 6f 9d 3e
    //        de d3 af 67 27 00 28 e0 32 8c 6d e3 ea 2c 54 88 a8 44 97 39 4c 5f
    //        0d d1 12 2b 92 cc 10 f8 f0 a9 cd 25 5d 16 6a b2 3e f6 6d 01 49 4f
    //        3a 7d fb 3e 02 23 34 76 a2 30 76 60 c3 ff d4 0d 50 22 82 d2 5c 51
    //        a3 3f 74 dd df c6 a3 8c 03 c3 1d 8e 7a 8e fd 70 ec 44 5a ac 15 a8
    //        08 c5 46 f7 21 ac 36 9b 05 fd ae 73 29 53 53 a7 9a 94 4b 33 fc 69
    //        76 bc 4e 8d 3f 33 e2 a5 4e 88 83 89 e6 f8 45 8e 61 2c 25 05 cb 23
    //        9a 33 87 a6 c6 44 75 a1 dd d2 cd d7 4d 1c de 80 23 f2 a2 7c 3a 06
    //        48 c8 06 5d 5e 73 99 f1 56 78 28 f9 ca 1b 62 89 a4 d6 7c 5d 8c 87
    //        b6 22 69 98 94 fb 2f fd d7 e1 87 6c 93 02 42 d6 5f bb 69 47 67 b1
    //        07 f8 ba 56 06 27 d2 1a 8c 76 52 aa 0c d5 f8 0e fb 97 32 99 7a a3
    //        60 47 0d 5c e5 42 50 f3 a1 3f 65 c0 65 5e 9a cd 61 28 88 ec fa 32
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    //      }
    //    }
    //  ]
    NONFAILING(*(uint32_t*)0x200000000700 = 0xbe2);
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        "\x44\x46\xa1\x2e\xc9\x9b\x6c\xed\x3a\x93\x2a\xe3\x8a\x2c\x9e\x5e\xa7"
        "\x48\x77\x2b\x8a\x22\xb7\x6a\xc5\xd0\x1f\xa7\x51\x9f\x92\xc9\x20\x6b"
        "\xcc\xf7\xc0\xe6\x8d\xa1\xd1\x51\x7a\xae\x97\x16\xe5\xf2\xa7\xc7\x93"
        "\xf9\x27\x9e\xf8\x63\xd2\x54\x88\xfc\xc0\x72\x47\x79\x7e\x97\xc3\x94"
        "\xba\x4f\xc1\x14\xa1\x0c\x46\x3d\x4d\x98\x4b\xb3\x4b\xfb\xda\xc8\x4b"
        "\x87\x38\x98\xc8\xce\x11\x4d\xe3\x34\x6f\xeb\xd5\x0e\x48\x78\x5c\xa9"
        "\x9c\x59\x5f\x23\xf2\x57\xd4\x6c\x8b\x39\xb5\x4b\x70\x62\xab\xb9\x45"
        "\x5e\xb7\xd6\xed\x42\x88\xcf\x0f\xc1\xe0\x27\xbd\x36\xf5\x43\xdd\x0b"
        "\x4c\x13\x16\xf9\xaa\xf6\x0b\xc2\x3e\x04\x65\xbc\x0f\x5e\x0e\x86\x06"
        "\x12\xc7\x2f\x24\xbf\x99\xae\xd2\x74\x70\xc0\x61\x7a\x0c\x35\x33\x23"
        "\xf4\x70\x1c\xc7\xd6\xd4\xb8\x07\xb0\x14\x8b\xd2\xf1\xe1\xc0\x06\x65"
        "\x1e\x81\x64\xbc\xd1\xc2\xa3\x66\x0a\xc3\xc0\xc6\x05\xb1\x2a\x7d\x3d"
        "\xd3\x0e\x4b\xcc\x94\xed\xb0\xae\x36\xe7\x8b\x73\x6c\x43\xa3\xb9\xb1"
        "\xb9\x20\xb4\x70\x4d\x62\x67\x33\x59\xb1\x7c\x74\xdb\xad\x94\xaa\x4b"
        "\x0e\x32\x6b\x92\x41\xef\xbf\xeb\x27\xb9\x9b\x5c\xc9\xaf\x35\x90\x74"
        "\x88\x5c\xa0\x72\xd0\x03\x53\xea\x47\x74\x79\xee\x0a\xc1\x06\x34\x54"
        "\x31\x00\x30\x71\x3d\xcd\x21\x73\xd2\xd5\xc7\xf6\x8d\x5f\x62\xf7\x8f"
        "\x54\x78\xde\x60\xd0\xe4\x30\x3a\xd0\xdf\x57\xb3\x50\x98\x2d\x61\x81"
        "\x53\x95\x32\x5b\xe8\x6c\x18\xf1\x33\xe1\x0f\x71\xaa\x84\x92\x49\x49"
        "\x82\xe5\x80\xcc\x00\xf0\xda\x7a\x1d\xc2\xa2\x5a\xa8\xd7\x5d\x6d\xbd"
        "\xc0\x42\xc9\xee\xe0\xeb\xc8\x11\xb3\x22\x54\x99\xf9\x05\x51\x36\x35"
        "\x9d\x40\x63\xe8\x34\x46\x6d\x05\x66\xcc\xc8\x3c\x7c\x1e\xd8\x7d\x27"
        "\x0b\xdd\x94\x44\x5f\xf5\x46\x5f\x42\x1b\x13\x4b\xc4\xbe\x15\x1c\xf5"
        "\x11\x14\xb6\x98\x61\x66\xd1\x5e\xa9\xf5\xf6\x5b\xc6\xdb\xcd\x44\x39"
        "\x2f\xf1\xf3\x32\x2a\x5c\xf1\x88\xd1\xd9\x6b\xac\xed\xe7\xb8\x6f\x02"
        "\x36\x33\xd9\x66\xd8\x0d\x29\x83\xa1\x88\x5c\x87\x24\xe4\x82\x6a\x86"
        "\xdc\x27\xa9\x5a\xba\x59\x5f\x90\x41\x56\x6d\x66\x18\x73\x3e\xca\x72"
        "\xfa\x1c\xb8\x73\x47\xbf\xa0\x21\xb7\x5c\xbe\x93\x8c\xcb\x89\x1b\x6a"
        "\x75\x55\xd7\x47\x01\x8b\xd7\xf5\x52\xae\xc0\xc5\x79\x9f\x31\x10\x01"
        "\x8d\xdf\xb3\xaf\x0d\x1c\xe9\x5d\xf7\x38\xef\x4b\xfc\xde\x02\xbb\x50"
        "\x7d\x7d\x7b\x9b\x21\xad\x26\xe7\x2f\xc5\x4d\xd8\x34\x9a\x6f\x15\xe6"
        "\x87\xe3\x6e\x15\x75\x7a\x4b\xf2\x69\xce\x9b\x76\x6a\xf6\x5f\xa2\xe6"
        "\x33\x65\x12\x93\x69\x45\x9b\xc4\xdc\x41\x14\xd1\x3e\x94\xc2\x1f\x05"
        "\xe3\x6a\x40\xda\x90\x46\xa4\x80\xed\x62\x5a\x22\xc1\x91\x67\x27\xb3"
        "\x4b\x83\xc6\x1f\xfd\xe3\x05\xe5\x18\x3b\x1b\x8a\xd8\xb4\x75\xdd\xf7"
        "\xa0\x6a\xe0\xd4\x90\x3b\x16\x5b\x43\x13\xd0\x91\x9f\xef\x78\x8c\x36"
        "\x59\x2c\x2f\x03\x82\x0a\xcf\x52\x3e\x52\x80\xfb\xe2\x71\x30\xdb\x58"
        "\xed\x07\x05\x33\x07\xdc\x98\x0d\x98\x30\xed\x34\x08\x73\xde\xbe\x0a"
        "\xc8\xdd\x2e\x0e\xf2\xf7\x0b\x2b\x51\xe9\xe3\xa6\x44\xec\x5d\x0d\x80"
        "\xc7\x66\x9c\xb2\x59\xd3\xae\x4b\xdd\x41\xb8\x8b\x15\x15\x9c\xe1\xe6"
        "\x45\x76\x2f\x40\xcb\x76\x0f\x3c\x83\xab\xa2\xb6\x33\x26\x80\x80\x3d"
        "\x13\x83\x17\x0d\xd6\xc4\xe3\x38\xcc\x1a\xe4\x06\x24\x7d\x44\xa5\x5d"
        "\xde\xb1\x93\x35\x93\x70\xa5\xd0\xf3\xed\x0f\xb2\xc4\xd0\x49\x2c\x0d"
        "\xfa\xca\x2c\x7a\x53\x6f\x7d\xd6\x17\xfa\x3a\xca\xe0\xa0\xe1\x83\xc6"
        "\x61\x81\x17\x15\x4c\x67\x47\xe6\x54\x60\x34\xc6\xd7\x41\xce\x55\xcf"
        "\x9a\x3c\xb2\x28\x1f\xcd\x7d\x64\x6a\x2c\x6b\x13\x3f\x6d\xfa\xc9\x92"
        "\x25\x35\x85\x2c\xaf\xad\x7f\x18\xc9\xf0\xcb\xb3\xf6\xb5\xfe\x2c\xe6"
        "\xa8\x2a\x4a\x78\xd8\x35\x41\x50\xa3\x93\x4c\xd8\x49\x78\x42\x2c\x36"
        "\xd4\xe4\x14\x49\x7b\xf5\xb9\x08\x07\x80\xfb\xc5\x8b\x5e\x48\x32\x6c"
        "\x68\x4b\x9e\x99\x8b\x0d\xba\x80\x2d\x81\x0d\xa5\x31\xf4\xfc\xf9\x69"
        "\xa2\x0a\x6e\xee\xd9\x99\x3f\xce\x95\x4d\xcc\x90\x13\x34\x54\xe7\xae"
        "\xfa\xf4\x55\x28\x48\x09\x29\x20\x1d\x49\x48\x24\xc3\xa0\x1f\xe9\xc9"
        "\x03\x7b\xa0\x02\xd9\x49\x00\x5c\xb2\xa0\x49\x10\x4f\x5b\x4f\x90\xac"
        "\x3d\x1d\x42\xd6\x12\x5f\x8f\xe8\xa5\xc6\x91\x6e\x87\x9e\xa6\x39\xa7"
        "\x77\xe0\xcf\x61\xf0\x01\x69\xb5\xaf\xe3\x33\x2d\x29\x2a\x6c\x29\x0e"
        "\x70\xa2\xe1\xba\x75\xfb\x2e\x56\x22\x3a\xae\x76\x4b\x58\xde\x8a\xc2"
        "\xd1\x0e\x87\xe2\x63\x1f\x10\x08\x42\xd5\xe2\xd7\x54\x74\x89\x68\xb4"
        "\x84\x80\x89\x7e\xda\x9f\x00\x5f\x56\xa4\x97\x0b\x12\x01\x12\x89\x04"
        "\x52\x24\x10\xd5\x50\xa7\xbc\x69\x8e\x09\x09\x04\xc4\xd9\x86\xe1\x8e"
        "\x73\xcc\x28\xd6\x6f\x4a\xcb\x43\xb1\xe4\x3f\x74\xf9\xd1\x94\x14\xad"
        "\x22\x52\x09\xe9\xee\xb7\x13\x35\xce\x0c\xd0\x37\xfd\x0b\x1a\x34\x2d"
        "\xdc\xc3\xc0\x53\xb0\x7c\x55\xa2\x48\xec\x97\xf2\xef\x67\x17\x54\x84"
        "\xeb\x84\xc6\xc7\x82\x1d\x13\x97\x8b\x08\xba\x3d\xad\x13\x6e\x71\x74"
        "\xa6\x49\x4c\x01\xd5\x96\xc9\xcd\x1c\x2d\xaf\xb6\x4e\x9e\x4f\x8a\x2e"
        "\xc1\xab\xda\x66\xf7\x3b\xba\x32\xa7\x38\x90\xfc\x53\x6b\x12\xf8\x3f"
        "\x89\x51\xa8\x95\xd2\x7b\x58\xb7\x5e\x30\x3c\x5e\x22\xaf\x70\x98\x1b"
        "\x16\xc9\xf2\x9e\xb3\x26\x72\x73\x68\x04\x63\xb2\x17\xf7\xa3\x69\x5c"
        "\x28\x45\xe6\xbf\xf7\xe3\x7f\x94\x17\x7d\xeb\x2e\x58\x29\xb3\xb3\x53"
        "\x0f\x9f\x3f\x7d\x43\xed\x1a\x3f\xf1\x74\xc0\x4f\xf4\xba\x9b\x2a\x21"
        "\xf3\xe1\x9e\x2f\x39\x6c\x82\x51\x7a\x0c\xed\x44\xba\x0a\x65\xc6\x37"
        "\x8a\x7d\xc6\xe7\x9d\x0b\x8c\x41\x69\x24\xc1\x2a\xce\x94\x0b\x40\xba"
        "\x49\x87\xfd\x24\xcd\x45\x8d\xcd\x46\x9b\xc6\xe5\xcf\x78\x87\xe2\x0c"
        "\xcc\xa1\x60\xc5\x35\xe4\x1b\xf2\x79\x73\xb1\x3b\xc4\x5c\x7a\xbc\x70"
        "\x90\x1d\x8e\x22\xae\xc7\xd3\x09\xd3\x34\x63\xa1\xd3\xef\x30\x20\x7c"
        "\xfb\x5d\x4f\x61\xbf\x34\x4d\x00\x55\xec\x17\x8a\xcc\x2b\x76\x38\x3b"
        "\x62\x21\x18\x05\x17\x28\xd5\xe0\x58\x4d\xc6\x25\xb9\x6f\x01\xd5\xe0"
        "\x24\x32\x8f\x8d\x95\x90\x6e\x47\x5b\x4f\x8c\x0e\x4a\x81\x23\x28\x0b"
        "\xf1\xbf\xfb\x8c\x6d\x95\x82\x7a\x20\x8d\x91\xf4\xd0\xa1\xfa\x4c\xe8"
        "\xf5\x90\x54\xb9\xb4\x91\xcf\xd8\x68\xd4\x34\xc7\x38\x77\x40\xe9\xc5"
        "\xe3\x23\x1f\x63\xfc\x0f\x60\xaa\x6e\xfd\xb1\x75\x18\xcf\xb6\x65\xd6"
        "\x95\x09\x92\x2e\xc7\x2c\x02\x91\x74\x75\x8d\x5f\x96\x8f\x1d\x3a\x17"
        "\x0d\x07\xb6\x12\xc2\x3d\x8e\x97\x25\x58\xfa\xcf\x83\x58\x34\x9c\x47"
        "\xc8\x95\xe1\xbb\x8e\x7f\xd9\x68\x29\x67\x31\x4a\x5b\x42\x41\x1c\x41"
        "\x92\x69\x96\x8a\x53\x43\xbc\xc9\x0d\x5a\xa9\x22\x02\x3c\x3d\xfc\x2f"
        "\x48\xc8\xa8\x46\xfd\x3f\xb3\xa6\x9d\x3a\xa7\x2d\xb7\x3f\x58\x35\xb6"
        "\x2e\xae\x61\xcb\xb1\x46\x12\xb3\x45\x76\x06\x56\xe7\xc5\x79\x53\x9f"
        "\xd0\xca\x4c\x5b\x35\x6a\x9b\xa0\x76\xbe\x0c\x6f\x24\xc2\xea\x33\x89"
        "\xc3\x73\xa7\x1b\x6e\x15\x6a\x50\x6e\x65\x84\x90\xe9\x4a\x19\x8a\xbb"
        "\x55\xcd\xfd\x13\x66\x7e\xf5\x6a\x4d\xc9\x03\x5d\x78\xe2\x9f\x50\xcf"
        "\xd0\x20\x05\x33\xe8\x3f\x36\x5a\xa7\x7a\x6e\x0b\x19\xb4\xbe\x92\x10"
        "\x7e\x64\x13\xff\x45\xf3\x61\x77\x2b\xc2\x16\x25\xfb\x6e\x0c\x30\xae"
        "\x36\x90\x78\x3a\x3f\xc6\x9f\x21\x39\x37\xd8\x88\xf7\xc8\xf6\xe4\x38"
        "\xff\x34\x3a\xd1\x62\x77\x68\xc3\xbb\xe4\xb8\x41\x92\xcb\x0b\xa1\x03"
        "\xaa\xf2\x1f\x52\x30\x05\xa1\x94\x7c\x32\x16\x95\x47\xf4\xb1\xd0\x9d"
        "\x8f\xb1\xfa\xe3\xc2\xbe\x96\x94\xb1\xee\xb6\xc2\x3b\x05\xa0\x16\x59"
        "\x10\xae\x66\xd1\x48\x3b\x83\x59\x7c\x02\x12\x5f\x98\x6b\xd9\x9f\x53"
        "\x8d\xa9\x3f\x61\x3a\x97\x63\x00\x9d\x8e\xaa\xbb\x3c\x5a\x50\x71\xea"
        "\x93\x63\xa9\xfe\xfe\x59\x2f\x7e\xff\x3c\xad\x7e\xba\x08\x1e\xfb\x1e"
        "\x64\xdc\x2d\x6c\xc3\x48\xbc\x87\x7c\x98\xd9\xa5\xf0\xa4\x8e\x43\xf1"
        "\xd8\x5c\x37\xb2\xb8\x02\xfa\x0a\x68\x5d\xe4\xd7\xe4\xae\x16\xa3\xf3"
        "\x6a\x02\xfb\x4f\x7f\x8d\x3b\x07\x12\xb0\x32\xe7\xb6\x09\xe8\xed\x07"
        "\x31\x86\x65\xbf\xfb\xee\xa5\x35\x63\xb5\x0f\x21\x6c\xb0\xb7\x17\x07"
        "\xc6\x42\x3e\xb4\x60\x98\x1c\xb3\x97\x1a\x28\x69\x97\x69\xa9\xaa\x2a"
        "\x6c\x43\x08\xbf\x98\x59\x44\xc2\x79\x21\x19\xd7\x9f\x89\x89\x96\xce"
        "\xa9\x70\x0d\xee\x87\x26\xcd\xe9\x24\xe9\xf3\x25\x51\x5a\x80\xcf\x8a"
        "\x3c\x52\x71\x7f\x40\xd6\x84\xf1\x65\x0d\x40\xa5\x95\x96\x7a\xa6\x30"
        "\x1c\x0a\xa6\x7c\x24\x06\x1d\x2f\x0c\x36\x02\xd0\x6f\x82\x6c\x30\xfd"
        "\xf3\xc3\x5e\xbe\xd5\x06\xab\x6e\x9a\xc0\x19\xe5\x55\x98\x29\xbc\x19"
        "\x1d\x1a\x27\xb4\x45\x13\xb2\x2d\x1f\x35\xa1\x29\xd2\xaf\x59\x2d\x50"
        "\xca\x7d\xfb\xf3\x87\x94\xa6\x74\x84\xac\x52\x92\x90\xa4\x43\x13\x90"
        "\xd1\xdd\xb2\x50\xd0\xd9\x48\x62\xbf\x27\x27\xf1\x24\x5c\x1d\xa5\x2e"
        "\x82\xe5\x8f\xbf\x1f\x0f\x61\x3d\xc9\x7d\xd7\xf2\x83\xca\xfa\x66\x34"
        "\xe4\xfc\xf0\x9b\xb0\xc7\xa5\xae\x81\xc0\xb7\xb5\xad\xfc\x56\xdc\xdf"
        "\x80\x16\xdd\xc9\x8c\x8f\x4e\xff\x1f\xf9\x89\x95\x74\x4b\x5d\xd8\xaf"
        "\xb0\x34\xb4\x95\x41\xf8\x10\xf4\xff\xbd\x81\x9f\x89\x14\xc4\xf2\x3f"
        "\x01\x38\x06\xa6\xb0\x69\x78\x12\xda\x1e\xc2\xba\x6d\xee\x40\x45\x6b"
        "\x20\x6d\x94\x6f\xc5\x0d\xed\xd2\x97\x2f\xea\x49\xf4\xbd\xbf\xfa\xb0"
        "\x45\xc0\x1e\x8a\x18\xf5\xbd\x29\x8d\x97\x51\x56\xea\x02\x92\x73\xa6"
        "\x86\xa0\xab\x67\x1c\x92\xe3\x78\xf5\xd9\x36\x69\xfc\x01\xff\x34\xfd"
        "\x6e\x28\x0d\x16\x19\x42\x7c\x46\xff\xb6\x1d\x48\x20\x67\x31\xd0\x93"
        "\x0d\x5d\x17\xaa\x28\x2f\x53\x85\x28\x7d\x1f\xaa\x54\xff\xbc\x4c\x80"
        "\xd1\x4e\x06\xb6\xf6\x46\x2d\x6c\xb6\xde\x61\xdf\x76\x5f\xe2\xd6\xdc"
        "\x9a\xb8\xab\x1d\x3b\x30\x75\x42\xf2\xf6\x69\x8b\x94\xe3\x2a\x87\x9e"
        "\x13\x5e\x14\xcc\x24\x5a\x96\x95\xb9\xb3\x4b\xd5\x3b\x23\x96\x3c",
        3042));
    syscall(__NR_ioctl, /*fd=*/r[2], /*cmd=*/0x90044802,
            /*arg=*/0x200000000700ul);
    break;
  case 9:
    //  syz_usb_connect$uac1 arguments: [
    //    speed: usb_device_speed = 0x0 (8 bytes)
    //    dev_len: len = 0xf0 (8 bytes)
    //    dev: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {12 01 10 03 00 00 00 40 73 2b 29 00 40 00 01
    //          02 03 01 09 02 de 00 03 01 05 80 07 09 04 00 00 00 01 01 00 00
    //          0a 24 01 00 00 11 00 02 01 02 07 24 04 05 01 c1 a7 09 04 01 00
    //          00 01 02 00 00 09 04 01 01 01 01 02 00 00 07 24 01 05 02 01 00
    //          0e 24 02 01 06 01 28 08 ed 7c 8d 71 30 3c 09 24 02 01 33 04 0a
    //          00 2d 0a 24 02 02 a3 5a 03 00 09 1c 11 24 02 01 03 03 02 f8 8f
    //          58 e5 6f 6e 5f 6b 8b 80 09 05 01 09 00 00 07 01 02 07 25 01 0c
    //          0a 06 00 09 04 02 00 00 01 02 00 00 09 04 02 01 01 01 02 00 00
    //          0a 24 02 02 00 04 03 00 09 00 0f 24 02 02 09 00 95 0c 05 e6 d0
    //          16 d9 bf 73 07 24 01 03 09 01 10 07 24 01 01 01 05 00 0c 24 02
    //          01 00 04 06 08 08 66 df 49 0b 24 02 01 7b 03 69 80 19 4f 3b 09
    //          05 82 09 00 00 40 08 0e 07 25 01 08 07 10 00} (length 0xf0)
    //        }
    //      }
    //    }
    //    conn_descs: ptr[in, vusb_connect_descriptors] {
    //      vusb_connect_descriptors {
    //        qual_len: len = 0xa (4 bytes)
    //        qual: ptr[in, usb_qualifier_descriptor] {
    //          usb_qualifier_descriptor {
    //            bLength: len = 0xa (1 bytes)
    //            bDescriptorType: const = 0x6 (1 bytes)
    //            bcdUSB: usb_versions = 0x300 (2 bytes)
    //            bDeviceClass: int8 = 0x4 (1 bytes)
    //            bDeviceSubClass: int8 = 0xb (1 bytes)
    //            bDeviceProtocol: int8 = 0x4 (1 bytes)
    //            bMaxPacketSize0: usb_device_max_packet_sizes = 0xff (1 bytes)
    //            bNumConfigurations: int8 = 0xff (1 bytes)
    //            bRESERVED: const = 0x0 (1 bytes)
    //          }
    //        }
    //        bos_len: len = 0x9e (4 bytes)
    //        bos: ptr[in, usb_bos_descriptor] {
    //          usb_bos_descriptor {
    //            bLength: const = 0x5 (1 bytes)
    //            bDescriptorType: const = 0xf (1 bytes)
    //            wTotalLength: len = 0x9e (2 bytes)
    //            bNumDeviceCaps: len = 0x2 (1 bytes)
    //            caps: array[usb_dev_cap] {
    //              union usb_dev_cap {
    //                generic: usb_generic_cap_descriptor {
    //                  bLength: len = 0x8d (1 bytes)
    //                  bDescriptorType: const = 0x10 (1 bytes)
    //                  bDevCapabilityType: usb_capability_types = 0x1 (1 bytes)
    //                  data: buffer: {6b e5 26 92 56 36 80 ca c3 e2 ea b9 ca 71
    //                  28 4d e3 29 8b bc b1 b3 9d 41 9b 51 5b f8 a9 f2 a5 a8 03
    //                  f5 23 56 53 cf 04 29 52 62 82 73 11 26 42 b1 15 2e 95 6f
    //                  8d 8f 2a 3b 06 01 90 37 e6 4e 84 7f cd 92 9d 7f 47 9f 21
    //                  5e 91 50 ab d5 6e 5c 38 3d 6f 41 4c e8 29 71 3c 04 93 b8
    //                  de ed 33 54 69 8b fa e0 f6 3e 11 dc 94 ac ec 88 67 64 d3
    //                  5e a1 ad c7 ee 83 b4 85 de f8 38 e7 f0 eb a0 3a 98 b4 b2
    //                  25 19 28 d1 92 db e9 99 ed 10} (length 0x8a)
    //                }
    //              }
    //              union usb_dev_cap {
    //                ssp_cap: usb_ssp_cap_descriptor {
    //                  bLength: len = 0xc (1 bytes)
    //                  bDescriptorType: const = 0x10 (1 bytes)
    //                  bDevCapabilityType: const = 0xa (1 bytes)
    //                  bReserved: int8 = 0x0 (1 bytes)
    //                  bmAttributesSublinkSpeeds: len = 0x0 (0 bytes)
    //                  bmAttributesSpeedIDs: int32 = 0x800 (4 bytes)
    //                  wFunctionalitySupport: usb_ssp_cap_funcs = 0xf (2 bytes)
    //                  wReserved: int16 = 0x101 (2 bytes)
    //                  bmSublinkSpeedAttr: array[usb_ssp_cap_sublink_speeds] {
    //                  }
    //                }
    //              }
    //            }
    //          }
    //        }
    //        strs_len: len = 0x2 (4 bytes)
    //        strs: array[vusb_connect_string_descriptor] {
    //          vusb_connect_string_descriptor {
    //            len: len = 0x9d (4 bytes)
    //            str: ptr[in, usb_string_descriptor] {
    //              union usb_string_descriptor {
    //                string: usb_string_descriptor_t[array[int8, 0:256]] {
    //                  bLength: len = 0x9d (1 bytes)
    //                  bDescriptorType: const = 0x3 (1 bytes)
    //                  data: buffer: {d0 32 85 7f 3d d8 af 3d 54 17 3d 12 1e 6d
    //                  43 33 62 e6 3b a0 84 46 3d 28 c0 c5 5c 3c 9b 9e 61 ff 0a
    //                  37 96 f1 f2 56 67 33 ba c7 72 44 fd fd 7c 04 1e dd 3a b9
    //                  a7 13 16 aa 53 0b 2b 51 ca 6b 6f 5a b4 bf 51 48 a9 7a 71
    //                  fc e2 2a 48 bb 97 c4 96 9a bc f6 72 9b 3a ba 36 9b 09 c9
    //                  08 0f 4e 83 b3 86 79 a9 63 60 39 1d 02 a9 29 87 02 2b 32
    //                  1d 22 9f 6a 90 72 19 c6 1d 4c 64 b5 56 57 ab 82 0e f5 a9
    //                  71 3c 8b c1 85 52 bb 6f ff 09 06 9d 7f 2a 72 a8 15 62 1c
    //                  37 92 63 8d 53 cf f1 c1} (length 0x9b)
    //                }
    //              }
    //            }
    //          }
    //          vusb_connect_string_descriptor {
    //            len: len = 0xd7 (4 bytes)
    //            str: ptr[in, usb_string_descriptor] {
    //              union usb_string_descriptor {
    //                string: usb_string_descriptor_t[array[int8, 0:256]] {
    //                  bLength: len = 0xd7 (1 bytes)
    //                  bDescriptorType: const = 0x3 (1 bytes)
    //                  data: buffer: {ed 0a 5d 37 0c aa 93 83 41 3d ce 7d 3f 86
    //                  14 f2 63 32 20 3a 2d 53 cc a6 9c da cc cd 0a f7 34 f9 da
    //                  90 00 e9 1d f1 6d a7 9f 71 90 1a 39 04 9b 75 e7 3a ef 0d
    //                  cf dd 93 dd 11 6d da af 09 08 61 d5 ff 07 87 2a 9d 0e 30
    //                  77 28 1c 78 d4 fe b9 8d 40 71 85 13 46 32 66 7f 4d f9 03
    //                  46 2b 01 d9 3f f6 89 3a cd d4 77 a6 92 8d ed ac 1a 77 f3
    //                  fb 57 0e d1 e7 8b af 30 64 63 a4 48 5b 72 11 b1 94 3e 6d
    //                  2a c9 77 a6 41 bb db 30 26 68 eb 1f 54 68 35 23 26 97 52
    //                  bf 33 cc 05 5c a2 5e 34 79 6a 9f 25 6b 40 de 31 43 1f 86
    //                  f5 c2 0b 9c 33 f2 1e 1e a0 b9 be db 6f 3d f9 ca 71 2e ba
    //                  0f 8d c8 58 d1 9a c7 37 89 ce 0c 69 72 d3 85 d6 c0 ce d8
    //                  5b 4e 82 08 9d f1 b3 f8 20} (length 0xd5)
    //                }
    //              }
    //            }
    //          }
    //        }
    //      }
    //    }
    //  ]
    //  returns fd_usb_uac1
    NONFAILING(memcpy(
        (void*)0x2000000002c0,
        "\x12\x01\x10\x03\x00\x00\x00\x40\x73\x2b\x29\x00\x40\x00\x01\x02\x03"
        "\x01\x09\x02\xde\x00\x03\x01\x05\x80\x07\x09\x04\x00\x00\x00\x01\x01"
        "\x00\x00\x0a\x24\x01\x00\x00\x11\x00\x02\x01\x02\x07\x24\x04\x05\x01"
        "\xc1\xa7\x09\x04\x01\x00\x00\x01\x02\x00\x00\x09\x04\x01\x01\x01\x01"
        "\x02\x00\x00\x07\x24\x01\x05\x02\x01\x00\x0e\x24\x02\x01\x06\x01\x28"
        "\x08\xed\x7c\x8d\x71\x30\x3c\x09\x24\x02\x01\x33\x04\x0a\x00\x2d\x0a"
        "\x24\x02\x02\xa3\x5a\x03\x00\x09\x1c\x11\x24\x02\x01\x03\x03\x02\xf8"
        "\x8f\x58\xe5\x6f\x6e\x5f\x6b\x8b\x80\x09\x05\x01\x09\x00\x00\x07\x01"
        "\x02\x07\x25\x01\x0c\x0a\x06\x00\x09\x04\x02\x00\x00\x01\x02\x00\x00"
        "\x09\x04\x02\x01\x01\x01\x02\x00\x00\x0a\x24\x02\x02\x00\x04\x03\x00"
        "\x09\x00\x0f\x24\x02\x02\x09\x00\x95\x0c\x05\xe6\xd0\x16\xd9\xbf\x73"
        "\x07\x24\x01\x03\x09\x01\x10\x07\x24\x01\x01\x01\x05\x00\x0c\x24\x02"
        "\x01\x00\x04\x06\x08\x08\x66\xdf\x49\x0b\x24\x02\x01\x7b\x03\x69\x80"
        "\x19\x4f\x3b\x09\x05\x82\x09\x00\x00\x40\x08\x0e\x07\x25\x01\x08\x07"
        "\x10\x00",
        240));
    NONFAILING(*(uint32_t*)0x200000000680 = 0xa);
    NONFAILING(*(uint64_t*)0x200000000684 = 0x2000000003c0);
    NONFAILING(*(uint8_t*)0x2000000003c0 = 0xa);
    NONFAILING(*(uint8_t*)0x2000000003c1 = 6);
    NONFAILING(*(uint16_t*)0x2000000003c2 = 0x300);
    NONFAILING(*(uint8_t*)0x2000000003c4 = 4);
    NONFAILING(*(uint8_t*)0x2000000003c5 = 0xb);
    NONFAILING(*(uint8_t*)0x2000000003c6 = 4);
    NONFAILING(*(uint8_t*)0x2000000003c7 = -1);
    NONFAILING(*(uint8_t*)0x2000000003c8 = -1);
    NONFAILING(*(uint8_t*)0x2000000003c9 = 0);
    NONFAILING(*(uint32_t*)0x20000000068c = 0x9e);
    NONFAILING(*(uint64_t*)0x200000000690 = 0x200000000400);
    NONFAILING(*(uint8_t*)0x200000000400 = 5);
    NONFAILING(*(uint8_t*)0x200000000401 = 0xf);
    NONFAILING(*(uint16_t*)0x200000000402 = 0x9e);
    NONFAILING(*(uint8_t*)0x200000000404 = 2);
    NONFAILING(*(uint8_t*)0x200000000405 = 0x8d);
    NONFAILING(*(uint8_t*)0x200000000406 = 0x10);
    NONFAILING(*(uint8_t*)0x200000000407 = 1);
    NONFAILING(memcpy(
        (void*)0x200000000408,
        "\x6b\xe5\x26\x92\x56\x36\x80\xca\xc3\xe2\xea\xb9\xca\x71\x28\x4d\xe3"
        "\x29\x8b\xbc\xb1\xb3\x9d\x41\x9b\x51\x5b\xf8\xa9\xf2\xa5\xa8\x03\xf5"
        "\x23\x56\x53\xcf\x04\x29\x52\x62\x82\x73\x11\x26\x42\xb1\x15\x2e\x95"
        "\x6f\x8d\x8f\x2a\x3b\x06\x01\x90\x37\xe6\x4e\x84\x7f\xcd\x92\x9d\x7f"
        "\x47\x9f\x21\x5e\x91\x50\xab\xd5\x6e\x5c\x38\x3d\x6f\x41\x4c\xe8\x29"
        "\x71\x3c\x04\x93\xb8\xde\xed\x33\x54\x69\x8b\xfa\xe0\xf6\x3e\x11\xdc"
        "\x94\xac\xec\x88\x67\x64\xd3\x5e\xa1\xad\xc7\xee\x83\xb4\x85\xde\xf8"
        "\x38\xe7\xf0\xeb\xa0\x3a\x98\xb4\xb2\x25\x19\x28\xd1\x92\xdb\xe9\x99"
        "\xed\x10",
        138));
    NONFAILING(*(uint8_t*)0x200000000492 = 0xc);
    NONFAILING(*(uint8_t*)0x200000000493 = 0x10);
    NONFAILING(*(uint8_t*)0x200000000494 = 0xa);
    NONFAILING(*(uint8_t*)0x200000000495 = 0);
    NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x200000000496, 0, 0, 5));
    NONFAILING(STORE_BY_BITMASK(uint32_t, , 0x200000000496, 0x800, 5, 27));
    NONFAILING(*(uint16_t*)0x20000000049a = 0xf);
    NONFAILING(*(uint16_t*)0x20000000049c = 0x101);
    NONFAILING(*(uint32_t*)0x200000000698 = 2);
    NONFAILING(*(uint32_t*)0x20000000069c = 0x9d);
    NONFAILING(*(uint64_t*)0x2000000006a0 = 0x2000000004c0);
    NONFAILING(*(uint8_t*)0x2000000004c0 = 0x9d);
    NONFAILING(*(uint8_t*)0x2000000004c1 = 3);
    NONFAILING(memcpy(
        (void*)0x2000000004c2,
        "\xd0\x32\x85\x7f\x3d\xd8\xaf\x3d\x54\x17\x3d\x12\x1e\x6d\x43\x33\x62"
        "\xe6\x3b\xa0\x84\x46\x3d\x28\xc0\xc5\x5c\x3c\x9b\x9e\x61\xff\x0a\x37"
        "\x96\xf1\xf2\x56\x67\x33\xba\xc7\x72\x44\xfd\xfd\x7c\x04\x1e\xdd\x3a"
        "\xb9\xa7\x13\x16\xaa\x53\x0b\x2b\x51\xca\x6b\x6f\x5a\xb4\xbf\x51\x48"
        "\xa9\x7a\x71\xfc\xe2\x2a\x48\xbb\x97\xc4\x96\x9a\xbc\xf6\x72\x9b\x3a"
        "\xba\x36\x9b\x09\xc9\x08\x0f\x4e\x83\xb3\x86\x79\xa9\x63\x60\x39\x1d"
        "\x02\xa9\x29\x87\x02\x2b\x32\x1d\x22\x9f\x6a\x90\x72\x19\xc6\x1d\x4c"
        "\x64\xb5\x56\x57\xab\x82\x0e\xf5\xa9\x71\x3c\x8b\xc1\x85\x52\xbb\x6f"
        "\xff\x09\x06\x9d\x7f\x2a\x72\xa8\x15\x62\x1c\x37\x92\x63\x8d\x53\xcf"
        "\xf1\xc1",
        155));
    NONFAILING(*(uint32_t*)0x2000000006a8 = 0xd7);
    NONFAILING(*(uint64_t*)0x2000000006ac = 0x200000000580);
    NONFAILING(*(uint8_t*)0x200000000580 = 0xd7);
    NONFAILING(*(uint8_t*)0x200000000581 = 3);
    NONFAILING(memcpy(
        (void*)0x200000000582,
        "\xed\x0a\x5d\x37\x0c\xaa\x93\x83\x41\x3d\xce\x7d\x3f\x86\x14\xf2\x63"
        "\x32\x20\x3a\x2d\x53\xcc\xa6\x9c\xda\xcc\xcd\x0a\xf7\x34\xf9\xda\x90"
        "\x00\xe9\x1d\xf1\x6d\xa7\x9f\x71\x90\x1a\x39\x04\x9b\x75\xe7\x3a\xef"
        "\x0d\xcf\xdd\x93\xdd\x11\x6d\xda\xaf\x09\x08\x61\xd5\xff\x07\x87\x2a"
        "\x9d\x0e\x30\x77\x28\x1c\x78\xd4\xfe\xb9\x8d\x40\x71\x85\x13\x46\x32"
        "\x66\x7f\x4d\xf9\x03\x46\x2b\x01\xd9\x3f\xf6\x89\x3a\xcd\xd4\x77\xa6"
        "\x92\x8d\xed\xac\x1a\x77\xf3\xfb\x57\x0e\xd1\xe7\x8b\xaf\x30\x64\x63"
        "\xa4\x48\x5b\x72\x11\xb1\x94\x3e\x6d\x2a\xc9\x77\xa6\x41\xbb\xdb\x30"
        "\x26\x68\xeb\x1f\x54\x68\x35\x23\x26\x97\x52\xbf\x33\xcc\x05\x5c\xa2"
        "\x5e\x34\x79\x6a\x9f\x25\x6b\x40\xde\x31\x43\x1f\x86\xf5\xc2\x0b\x9c"
        "\x33\xf2\x1e\x1e\xa0\xb9\xbe\xdb\x6f\x3d\xf9\xca\x71\x2e\xba\x0f\x8d"
        "\xc8\x58\xd1\x9a\xc7\x37\x89\xce\x0c\x69\x72\xd3\x85\xd6\xc0\xce\xd8"
        "\x5b\x4e\x82\x08\x9d\xf1\xb3\xf8\x20",
        213));
    NONFAILING(syz_usb_connect(/*speed=*/0, /*dev_len=*/0xf0,
                               /*dev=*/0x2000000002c0,
                               /*conn_descs=*/0x200000000680));
    break;
  case 10:
    //  syz_usb_control_io$uac1 arguments: [
    //    fd: fd_usb_uac1 (resource)
    //    descs: nil
    //    resps: nil
    //  ]
    NONFAILING(syz_usb_control_io(/*fd=*/r[0], /*descs=*/0, /*resps=*/0));
    break;
  case 11:
    //  syz_usb_ep_write$ath9k_ep1 arguments: [
    //    fd: fd_usb_ath9k (resource)
    //    ep: const = 0x82 (1 bytes)
    //    len: bytesize = 0x4 (8 bytes)
    //    data: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {00 00 00 4e 3b 6c b9 37 55 80 dc cd c1 d5 bb
    //          1a 7a 09 5d aa c4 69 36 43 74 10 8e bb 9f 1d f8 50 20 9a b7 81
    //          73 b6 fe d3 b9 a1 be 2d 2f 51 26 33 7b 72 d8 94 85 fb 61 e7 7d
    //          2f 1c 8f ff 4a dc 69 f3 b4 a7 58 78 84 04 0a d0 6a af fa 65 38
    //          80 04 ba 98 85 0b 40 b6 cc a8 c5 3b 34 e5 bf 4a c4 c1 68 33 4a
    //          b1 0a 4c 13 0c a0 63 a6 92 63 43 69 1f 6c 0d fc 65 7b 71 07 58
    //          99 9e f7 ef a9 00 55 ba ba e3 84 fd d9 db cc cd 88 e9 82 0c 02
    //          ae a2 93 35 c8 ad 26 80 37 ab c8 f1 ee 4d 53 9b c0 70 b7 ae 8c
    //          f7 25 6b 41 17 24 33 d1 0a 0c ca 38 ac 52 3a d2 98 78 cd 1a 1f
    //          d3 85 16 93 79 1d 9a 49 2f 5f a3 db 82 19 ce 84 aa 58 53 c5 d4
    //          c8 87 42 da cf c1 b9 76 87 73 a0 a7 96 48 de 3a bb ed 44 7f 4f
    //          df 2a d8 2e 71 46 48 7f 41 d4 6f 38 6c 61 e2 2b 29 9a 47 f5 b6
    //          81 c6 55 33 4a b9 8c 4c 39 f7 16 ca e6 69 81 42 b4 f3 08 f5 f6
    //          d3 94 b4 57 d7 a8 e1 f2 31 c9 a1 63 d6 b8 84 1c 4b 48 27 e7 64
    //          22 00 00 00 00 00 00 00 0f 87 ab 35 cf 27 88 e8 f4 f4 37 df fa
    //          d3 3d 6a 66 10 b5 a6 21 4a de 5a b2 2d 1a 5d 2a 11 df 9d 7e 87
    //          92 03 f9 26 27 38 1d 21 0c 1d e9 76 4d 7a 35 f1 86 3c f8 0a 58
    //          c2 16 c6 f4 3a a9 2d 13} (length 0x167)
    //        }
    //      }
    //    }
    //  ]
    NONFAILING(memcpy(
        (void*)0x200000000140,
        "\x00\x00\x00\x4e\x3b\x6c\xb9\x37\x55\x80\xdc\xcd\xc1\xd5\xbb\x1a\x7a"
        "\x09\x5d\xaa\xc4\x69\x36\x43\x74\x10\x8e\xbb\x9f\x1d\xf8\x50\x20\x9a"
        "\xb7\x81\x73\xb6\xfe\xd3\xb9\xa1\xbe\x2d\x2f\x51\x26\x33\x7b\x72\xd8"
        "\x94\x85\xfb\x61\xe7\x7d\x2f\x1c\x8f\xff\x4a\xdc\x69\xf3\xb4\xa7\x58"
        "\x78\x84\x04\x0a\xd0\x6a\xaf\xfa\x65\x38\x80\x04\xba\x98\x85\x0b\x40"
        "\xb6\xcc\xa8\xc5\x3b\x34\xe5\xbf\x4a\xc4\xc1\x68\x33\x4a\xb1\x0a\x4c"
        "\x13\x0c\xa0\x63\xa6\x92\x63\x43\x69\x1f\x6c\x0d\xfc\x65\x7b\x71\x07"
        "\x58\x99\x9e\xf7\xef\xa9\x00\x55\xba\xba\xe3\x84\xfd\xd9\xdb\xcc\xcd"
        "\x88\xe9\x82\x0c\x02\xae\xa2\x93\x35\xc8\xad\x26\x80\x37\xab\xc8\xf1"
        "\xee\x4d\x53\x9b\xc0\x70\xb7\xae\x8c\xf7\x25\x6b\x41\x17\x24\x33\xd1"
        "\x0a\x0c\xca\x38\xac\x52\x3a\xd2\x98\x78\xcd\x1a\x1f\xd3\x85\x16\x93"
        "\x79\x1d\x9a\x49\x2f\x5f\xa3\xdb\x82\x19\xce\x84\xaa\x58\x53\xc5\xd4"
        "\xc8\x87\x42\xda\xcf\xc1\xb9\x76\x87\x73\xa0\xa7\x96\x48\xde\x3a\xbb"
        "\xed\x44\x7f\x4f\xdf\x2a\xd8\x2e\x71\x46\x48\x7f\x41\xd4\x6f\x38\x6c"
        "\x61\xe2\x2b\x29\x9a\x47\xf5\xb6\x81\xc6\x55\x33\x4a\xb9\x8c\x4c\x39"
        "\xf7\x16\xca\xe6\x69\x81\x42\xb4\xf3\x08\xf5\xf6\xd3\x94\xb4\x57\xd7"
        "\xa8\xe1\xf2\x31\xc9\xa1\x63\xd6\xb8\x84\x1c\x4b\x48\x27\xe7\x64\x22"
        "\x00\x00\x00\x00\x00\x00\x00\x0f\x87\xab\x35\xcf\x27\x88\xe8\xf4\xf4"
        "\x37\xdf\xfa\xd3\x3d\x6a\x66\x10\xb5\xa6\x21\x4a\xde\x5a\xb2\x2d\x1a"
        "\x5d\x2a\x11\xdf\x9d\x7e\x87\x92\x03\xf9\x26\x27\x38\x1d\x21\x0c\x1d"
        "\xe9\x76\x4d\x7a\x35\xf1\x86\x3c\xf8\x0a\x58\xc2\x16\xc6\xf4\x3a\xa9"
        "\x2d\x13",
        359));
    NONFAILING(syz_usb_ep_write(/*fd=*/r[0], /*ep=*/0x82, /*len=*/4,
                                /*data=*/0x200000000140));
    break;
  case 12:
    //  ioctl$HIDIOCGRDESCSIZE arguments: [
    //    fd: fd_hidraw (resource)
    //    cmd: const = 0x80044801 (4 bytes)
    //    arg: ptr[out, int32] {
    //      int32 = 0x0 (4 bytes)
    //    }
    //  ]
    syscall(__NR_ioctl, /*fd=*/(intptr_t)-1, /*cmd=*/0x80044801,
            /*arg=*/0x200000000100ul);
    break;
  case 13:
    //  syz_usb_connect arguments: [
    //    speed: usb_device_speed = 0x0 (8 bytes)
    //    dev_len: len = 0x39 (8 bytes)
    //    dev: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYBLOB: buffer: {12 01 00 02 00 00 00 40 d1 18 af 1e 00 00 01
    //          02 03 01 09 02 27 00 01 01 00 80 fa 09 04 00 00 03 ff ff ff 00
    //          07 05 81 02 00 02 00 07 05 82 02 00 02 00 07 05 03 02} (length
    //          0x36)
    //        }
    //      }
    //    }
    //    conn_descs: nil
    //  ]
    //  returns fd_usb
    NONFAILING(memcpy((void*)0x200000000000,
                      "\x12\x01\x00\x02\x00\x00\x00\x40\xd1\x18\xaf\x1e\x00\x00"
                      "\x01\x02\x03\x01\x09\x02\x27\x00\x01\x01\x00\x80\xfa\x09"
                      "\x04\x00\x00\x03\xff\xff\xff\x00\x07\x05\x81\x02\x00\x02"
                      "\x00\x07\x05\x82\x02\x00\x02\x00\x07\x05\x03\x02",
                      54));
    NONFAILING(syz_usb_connect(/*speed=*/0, /*dev_len=*/0x39,
                               /*dev=*/0x200000000000, /*conn_descs=*/0));
    break;
  case 14:
    //  syz_usb_ep_write arguments: [
    //    fd: fd_usb (resource)
    //    ep: int8 = 0x3 (1 bytes)
    //    len: len = 0x8 (8 bytes)
    //    data: ptr[in, buffer] {
    //      buffer: {62 18 81 10 53 79 a0 6b} (length 0x8)
    //    }
    //  ]
    NONFAILING(
        memcpy((void*)0x200000000040, "\x62\x18\x81\x10\x53\x79\xa0\x6b", 8));
    NONFAILING(syz_usb_ep_write(/*fd=*/r[0], /*ep=*/3, /*len=*/8,
                                /*data=*/0x200000000040));
    break;
  case 15:
    //  syz_usb_connect arguments: [
    //    speed: usb_device_speed = 0x0 (8 bytes)
    //    dev_len: len = 0x2d (8 bytes)
    //    dev: ptr[inout, array[ANYUNION]] {
    //      array[ANYUNION] {
    //        union ANYUNION {
    //          ANYRES64: ANYRES64 (resource)
    //        }
    //      }
    //    }
    //    conn_descs: nil
    //  ]
    //  returns fd_usb
    NONFAILING(*(uint64_t*)0x200000000040 = r[0]);
    NONFAILING(syz_usb_connect(/*speed=*/0, /*dev_len=*/0x2d,
                               /*dev=*/0x200000000040, /*conn_descs=*/0));
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-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();
  use_temporary_dir();
  do_sandbox_none();
  return 0;
}