// https://syzkaller.appspot.com/bug?id=073f2a74db93d4a584beb6a9e5ebeb7029aacf5e
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <pthread.h>
#include <sched.h>
#include <setjmp.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/capability.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/loop.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/sched.h>
#include <linux/tcp.h>
#include <linux/veth.h>

#ifndef __NR_clone3
#define __NR_clone3 435
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 319
#endif

static unsigned long long procid;

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

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

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

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

static void sleep_ms(uint64_t ms)
{
  usleep(ms * 1000);
}

static uint64_t current_time_ms(void)
{
  struct timespec ts;
  if (clock_gettime(CLOCK_MONOTONIC, &ts))
    exit(1);
  return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
}

static void 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);
}

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

static struct nlmsg nlmsg;

static int tunfd = -1;

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

#define IFF_NAPI 0x0010

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

#define DEVLINK_FAMILY_NAME "devlink"

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

static struct nlmsg nlmsg2;

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

#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

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

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

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

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

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

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

#define ZLIB_HEADER_WIDTH 2

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

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

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

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

error_clear_loop:
  if (need_loop_device) {
    ioctl(loopfd, LOOP_CLR_FD, 0);
    close(loopfd);
  }
  errno = err;
  return res;
}

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

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

static void loop();

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

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

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

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

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

static void setup_binfmt_misc()
{
  if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0)) {
  }
  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");
}

static void setup_sysctl()
{
  char mypid[32];
  snprintf(mypid, sizeof(mypid), "%d", getpid());
  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"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", mypid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data))
      printf("write to %s failed: %s\n", files[i].name, strerror(errno));
  }
}

#define USLEEP_FORKED_CHILD (3 * 50 * 1000)

static long handle_clone_ret(long ret)
{
  if (ret != 0) {
    __atomic_store_n(&clone_ongoing, 0, __ATOMIC_RELAXED);
    return ret;
  }
  usleep(USLEEP_FORKED_CHILD);
  syscall(__NR_exit, 0);
  while (1) {
  }
}

#define MAX_CLONE_ARGS_BYTES 256
static long syz_clone3(volatile long a0, volatile long a1)
{
  unsigned long copy_size = a1;
  if (copy_size < sizeof(uint64_t) || copy_size > MAX_CLONE_ARGS_BYTES)
    return -1;
  char clone_args[MAX_CLONE_ARGS_BYTES];
  memcpy(&clone_args, (void*)a0, copy_size);
  uint64_t* flags = (uint64_t*)&clone_args;
  *flags &= ~CLONE_VM;
  __atomic_store_n(&clone_ongoing, 1, __ATOMIC_RELAXED);
  return handle_clone_ret((long)syscall(__NR_clone3, &clone_args, copy_size));
}

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 loop(void)
{
  int i, call, thread;
  for (call = 0; call < 7; 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);
      event_timedwait(&th->done, 50 + (call == 0 ? 4000 : 0));
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

uint64_t r[1] = {0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20001140, "ext4\000", 5));
    NONFAILING(memcpy((void*)0x200007c0, "./file0\000", 8));
    NONFAILING(*(uint64_t*)0x20008440 = 0);
    NONFAILING(memcpy(
        (void*)0x20008448,
        "\xfc\x50\x11\x6d\x75\xf0\x2d\x84\x1f\x9c\x73\x26\x29\x13\xf9\xde\x63"
        "\xbf\xad\xe2\x81\xef\x4d\x84\x23\x63\x3d\x65\x81\xf5\xf1\x55\x8a\xc7"
        "\x00\xd7\x9e\xa6\x30\x11\xea\x49\xdb\x12\xc8\x41\x13\x47\xd5\xe2\x81"
        "\xb7\x14\x66\xcb\x87\x32\xd5\xc1\x15\xde\x5b\xf3\x9d\x84\xe7\x9c\xfa"
        "\xe2\xde\x22\x13\x63\x66\x9b\x11\xf6\x6c\xa4\x13\x60\xd4\xf0\x25\xca"
        "\x39\xec\x4e\x00\x7b\x8e\x84\x65\xed\x92\x00\x50\xd1\x46\x2e\xac\xe3"
        "\x9d\xef\xc8\x8a\xd6\x28\x82\xf2\xb7\x43\xd9\xe8\x04\x00\x4c\x45\xa1"
        "\xcf\xd5\x2f\xa5\xf8\xe3\x50\x06\x10\xf4\x1c\xe8\xfe\x4c\x19\x88\x79"
        "\x3a\x8a\x58\x46\x97\xeb\x41\x66\xc8\x5d\xdc\x05\xea\x9e\x5b\x6a\xa0"
        "\xe2\x2b\xe3\x77\x79\x1e\x45\x65\x80\xf7\xcf\x91\x09\xcf\xa8\xe9\xb8"
        "\xd6\xce\x37\xfd\xdf\x8e\xfc\x68\x20\x80\x32\x95\x8d\x89\x35\x78\x3d"
        "\x42\xdc\x3b\x6c\x3f\xac\x78\x33\x92\xec\xa5\xf7\x88\xc0\xd8\x5b\x0b"
        "\xc4\x4d\x44\x53\x37\x5b\x18\xf8\x98\x4e\x85\xbb\x55\xd3\x3e\xaf\xa8"
        "\x6e\x27\x12\x63\x61\xa6\x00\x57\xf0\x73\xce\x49\xda\x07\x6b\x57\xa6"
        "\xce\xb0\x03\x9f\x1f\xa5\x7b\x07\xb2\x87\xe0\xc5\x70\xb5\xd0\x02\xa1"
        "\x49\x6d\xbd\x19\x33\x1f\xf5\xcc\x69\xe4\x5a\x2e\x93\x22\x01\x4d\xc6"
        "\x3f\x14\x56\x5a\x67\xea\x9e\xf0\x45\xb6\x4c\xd9\x1a\x8b\x06\xa4\xf0"
        "\x3a\xe5\xb2\xeb\x16\x88\x7e\x77\x84\x33\xa1\x18\xb6\x7c\x55\xe9\x82"
        "\x2a\x36\xc1\xba\x25\x92\x24\xd6\x16\x23\xb9\x17\x15\x38\x37\x5a\x28"
        "\x1f\x1c\xa5\x51\xc5\xac\x47\x2c\xc6\xf6\x13\xaf\x6c\x9f\x40\x6a\xf1"
        "\x74\x91\x71\x69\xc6\x86\xfa\xe8\x11\x2f\x95\xcb\x66\xd5\x37\x07\x00"
        "\x00\x00\x88\x70\xf6\x54\x85\xe4\xd9\xb4\x3c\x2a\xbf\x75\x16\x0f\x81"
        "\xea\xe6\xcb\xf6\xd1\x48\x29\x00\x1e\x07\x13\x34\xe6\x01\xb1\x95\xe3"
        "\x68\x8b\xc4\x2f\xf7\x11\xeb\xf1\x33\xfc\x6d\xc6\x93\x97\xfc\x7c\xd7"
        "\x46\xf5\xbc\x4f\x1e\x1e\x49\x5d\x7a\x89\xb4\x20\x6a\x02\x1b\x97\xc6"
        "\x68\x65\x8d\x35\xa5\xcd\xc0\x79\xae\xb8\x33\xc8\x62\xad\xae\x92\xee"
        "\xfb\x2a\xfa\x69\x4a\x4b\xf1\xcd\x55\x0e\x27\x08\x01\x82\xde\x50\x02"
        "\x7a\xcc\x51\xa4\x90\xac\xb2\x94\x41\x48\x80\xda\x61\x82\x34\xd9\x4c"
        "\xdd\x31\x29\x37\x7a\x81\x74\x93\x30\x3b\xb8\x18\xc8\xfd\x55\x2b\x0b"
        "\x32\x40\xb9\xa3\xf9\x17\x32\xf0\xd0\xfa\x62\x2b\xee\xae\x9d\xbf\xef"
        "\xdb\x4e\x3e\xf6\x8b\xc0\xed\xa9\x41\x01\xea\xb1\x2d\x1e\xb3\x8f\xd8"
        "\xd0\x82\x07\x73\x4d\x30\x24\x1f\x53\x3e\x13\x9d\xd4\x71\x2b\x18\x35"
        "\x52\x0c\xa6\x79\xec\x3a\x31\xfc\xc1\x1d\x92\x9b\x7b\xf1\x5f\x6a\x88"
        "\xcc\xfa\x24\x4d\x04\xb0\xf8\x32\xff\xff\xff\xff\xdb\x9b\xed\x20\x1f"
        "\x25\xc4\x28\xee\xf8\xc7\xf1\xb6\x56\x0f\xf1\x2d\x39\xd7\x04\xb4\x68"
        "\x19\xab\x7a\xd1\x97\x99\xff\x8e\xd4\x5f\x55\x33\xac\xbc\xb0\xad\xdf"
        "\xe1\xa2\x16\x90\x05\x39\xac\x23\xfc\x0b\x0d\xf8\x8a\x13\xb8\xb8\x15"
        "\x31\x1a\x2a\xeb\xad\x5b\xd5\x7a\xd6\x2f\x3f\x04\x2b\x96\x14\xbc\x40"
        "\x92\xd5\x30\xa6\x09\x99\x89\x3d\x48\xf3\xe9\x94\xec\xfa\x67\x7c\x1d"
        "\x16\x3e\x4d\xda\x0e\x53\x04\x6c\x76\x1b\x98\x67\xa8\x72\xb9\x10\xdf"
        "\x3e\xe1\x07\xb2\xbc\xc3\x32\xaa\x32\x6b\xae\x7f\x59\x56\x51\x1c\x12"
        "\x54\xec\xcb\x7a\xc8\xa5\x1d\x92\xc0\xdd\x65\x17\x65\x52\x76\x38\x68"
        "\x16\x7e\x1c\xb1\xad\x24\x33\x02\xbd\xa2\x53\xc8\xd7\xd7\xb1\x84\x49"
        "\xe5\xcb\xd2\x62\x99\xac\x94\xb0\xe1\x5a\xd0\x00\x15\xeb\xda\x7b\x71"
        "\x38\x1e\x98\xf1\x95\x57\x87\x5e\x32\x8b\xa5\x59\xfa\xf3\xe0\xcc\xa4"
        "\x29\x78\xa5\x3a\x9b\xc8\xa8\x3c\xc0\x78\xe4\x1b\x02\xbd\xe6\x9a\x9e"
        "\x7d\xd7\xb6\x5f\x76\xbd\x55\x7a\x32\x77\x7a\x27\xf3\x0a\x59\x20\xcf"
        "\x84\x49\xb5\x99\x5f\xf2\x27\xac\xe0\x2b\x9a\x1e\x61\x21\xb5\x7f\x50"
        "\x91\x6b\x05\x3f\xc7\x71\xf5\x87\xd0\x00\xcc\x3a\x09\xa2\x04\xc2\xcb"
        "\x2e\xcd\x51\x14\xc1\xd2\xfa\xd2\x39\x8a\x7f\x93\xa7\x8c\x9f\x8c\x3f"
        "\xc5\xa1\xcc\xda\x75\xd9\x8d\x62\x6c\x27\x11\x93\x76\xa6\x94\x1e\xe7"
        "\x88\x0e\x78\xe4\xb6\xf2\xc8\x92\xb0\xd6\xac\x1c\x72\xc0\x12\x0a\x15"
        "\xca\x80\x92\x5b\x47\x52\x13\xc7\xaf\x02\xaf\xfe\x33\x70\xc5\xa3\xcf"
        "\x9e\xb0\x92\xae\x1e\x4f\x74\x8b\xf7\x2b\x18\xc2\x2e\x61\x58\xcf\xe2"
        "\xd2\xb7\xac\x47\xca\xc3\xb1\x9e\x75\x80\x4e\x11\xb4\x08\xa0\xb9\x41"
        "\xc9\x5d\x6a\x14\xd0\x22\x02\x71\x28\xb6\x85\x8a\xdc\x39\xe3\x23\xd7"
        "\x65\x39\xca\x18\xe2\x51\x8f\x98\x7f\x69\x91\x93\x16\x60\xde\xc1\x12"
        "\x66\xda\xd0\xa5\x2f\x05\xd0\xdd\x07\xd6\xed\xe6\x01\x4c\x1d\x6c\x0a"
        "\xb0\x40\x7e\x3a\xb8\xc0\x58\x19\x03\x6e\x38\x36\x31\x63\x9b\xe1\x7b"
        "\x5a\xd0\xbc\x05\x5f\x06\x73\x28\x48\xde\xd6\xa8\x40\x0a\xa8\x2a\x9a"
        "\x8f\x69\x7b\x13\x7b\x4a\x77\xf2\x61\x4e\x22\x6c\xc1\x60\x81\x16\x72"
        "\x71\xe9\xf2\x54\xf2\xcf\x91\x0b\xea\x6e\x0a\xd2\x16\x2c\xb7\x4f\xe4"
        "\xe9\x6f\xa5\x0c\x6d\x9e\xc5\x56\xfd\x10\xc7\x7c\xa2\xbf\x5b\xfe\xb0"
        "\x7b\x36\xde\xf6\x8e\x3b\xd3\x77\xc4\x2e\xcb\x56\xfb\x93\x4a\xec\xfa"
        "\xd2\x05\xff\x35\x7b\x80\x89\xbe\x84\x25\x2b\xd0\x2e\x4a\x5c\xa8\xbc"
        "\xe3\x61\xbd\x22\x0e\x24\xfe\xe9\x81\xd6\x49\x6f\x6f\xf6\xcb\x95\x17"
        "\xff\xb2\x4a\x0e\xdc\x5f\x8a\xba\x80\x20\xb7\xea\x63\xf8\xae\x08\x6c"
        "\x18\xad\x2e\xcb\x22\xc9\x8f\x9c\x04\xdc\xee\xe1\x6e\x7f\x67\x8b\xf6"
        "\x4f\xfb\x7c\x54\x78\xd9\xed\x8e\xb9\x0f\x6d\x38\xca\x2e\x94\x13\xa8"
        "\x80\x96\xe2\xb1\xd6\x0c\x28\x50\x26\xe4\x4b\x38\xe8\xf3\x8a\x46\xc7"
        "\xaa\xc4\x6e\x03\x56\xbb\xf0\xea\x76\x7a\x34\xb7\x2b\x60\x82\x72\x51"
        "\xdb\xc8\xec\x3f\x73\x26\x55\xae\x2d\xd9\x64\x65\x6b\x7e\x50\x74\x28"
        "\x10\x12\x5d\xc7\x23\xf0\x4a\x1a\xac\x38\x22\xa7\xc5\x30\x8b\xca\x6f"
        "\x6e\x3c\x54\xa7\xd4\x6f\x09\xfc\x73\x1c\x92\x2d\x79\xd7\x7d\xc4\x76"
        "\xa3\x3a\x7d\xc7\x2e\xa1\x55\x45\x13\x6b\xeb\x55\x4d\x6f\xb1\x75\xef"
        "\xce\x5f\x59\x33\x21\xf8\x6e\x1b\x9a\x02\xef\xb5\xe7\x22\x12\x5a\xe6"
        "\x5d\x09\x00\x00\x00\x2a\xc9\xd1\x48\xb2\x6a\x35\xc1\xae\x2b\xfc\xde"
        "\x17\x8f\x7b\xb2\x31\x57\xe6\xf6\x5d\x60\xa7\x73\xe9\x95\x48\x68\xfc"
        "\x09\x1c\x71\x62\xaf\xc1\x67\x9d\x2d\xae\x94\x11\x61\x6d\x92\xbe\x97"
        "\x5d\x10\xe7\xc0\x51\xb3\xd9\xe2\x74\x09\x90\x76\x1f\x1a\x2b\x3c\x82"
        "\x51\x5a\x64\x32\xc1\x21\xd9\x83\xb2\x64\xf2\xcf\x01\xe6\xef\x96\x43"
        "\x85\x8c\x9d\x7e\x9b\xf3\x3f\x01\xa6\x67\x71\xe8\xec\x47\xac\xa4\x59"
        "\x41\xd6\x41\x01\x6f\x2a\x0c\xd5\x55\x2d\x7c\x85\x56\x87\x7e\xc4\xd9"
        "\x40\x87\x6e\xad\xae\x48\x67\x5f\x3f\x59\x0f\xf7\xbd\xe8\xf1\xbe\xba"
        "\x5b\x3f\x73\xda\x84\xa6\x52\x68\x45\x82\x4c\x54\x45\x14\xf7\x31\xbd"
        "\xd2\x39\x67\x98\x80\xa8\xd4\x7b\x7b\x69\x1c\x3c\x56\xa0\xd0\xdc\xc5"
        "\x70\x8b\xfd\x89\xc0\x64\xbc\xa1\x37\x26\xdb\x2a\x68\x4e\x8e\x91\x0b"
        "\x99\x1c\x3f\x3a\xd8\x67\x28\x43\xa4\x5b\x9c\x15\x20\x05\x26\xec\xd4"
        "\xe4\x0b\xa0\xef\x1f\x42\xc8\x6f\x3f\xe3\x79\x2f\xeb\x11\xab\xbb\x7b"
        "\x24\xda\x0c\xc9\xd3\xee\x7d\x0a\x72\xdb\xf2\x45\x75\xc3\x3a\xe9\xbe"
        "\xe3\xc8\x4b\xd2\xed\x32\x38\x5d\xcb\xeb\x75\x00\x31\x83\xc4\x8f\x39"
        "\x55\xd9\xf3\x47\x7c\xb3\x09\x4d\xb3\x25\x2d\x1e\xaa\xda\xc5\x46\x11"
        "\xd1\xd0\x82\xe9\xa6\x82\x4a\x55\x7e\x25\xc6\x1b\x20\xec\x2a\x3d\x37"
        "\xed\x5b\xac\x7f\xd0\x2c\xe3\xe8\x6c\x83\x88\x1e\x3e\xe8\x43\x7b\xcd"
        "\xb1\x24\x2a\x14\x83\x21\xbd\x61\x35\x55\xd1\xe7\xf7\x98\x01\xc9\x90"
        "\x10\x6b\x31\x2a\x97\x1e\x9d\xd1\x38\x2f\x9e\x27\x5b\x19\xed\x1c\x34"
        "\x2a\x06\xa2\x96\x3e\xb8\xcc\xc8\x4c\xc5\x80\xe4\x8d\x9b\xe4\x33\x7a"
        "\x65\x41\xeb\xd8\x44\x88\x13\x16\x97\x87\xec\xa6\xc5\x56\x2d\x5d\xb6"
        "\x55\xd1\x5c\xec\xb9\x98\xaa\x9b\xab\x2b\x8d\x4d\xd2\x29\x3e\x20\xd7"
        "\xf1\x02\xa5\x8b\xa5\x2a\x47\x2c\xc8\x88\x9b\x4d\xfe\x4d\x2d\xfb\xcc"
        "\xa3\xb1\xc1\x08\xaa\xf5\x24\xfc\xa4\xe3\x84\x09\xa7\x56\x11\x78\xda"
        "\xb9\x22\xd2\xf1\x03\x07\x72\x7f\x1d\x81\x42\x8d\x65\x8e\x1c\xc8\x55"
        "\xa2\xb7\xf8\x79\x64\xea\xf3\x86\xc5\x0f\xc6\xa7\x5b\x88\x8b\xb0\xd3"
        "\xce\x41\x1c\x2c\xf1\xa6\xfc\xe2\x52\xb2\x60\x3f\x13\x05\x35\xed\x69"
        "\xa4\x8a\xf2\xd3\x41\x60\x79\x04\x01\xb1\x47\xd6\xcb\xda\xc9\x2b\x68"
        "\x65\x24\x95\x69\xb3\x93\x1c\x37\x0c\xb8\xac\x1e\x85\x83\x72\xdb\x58"
        "\x74\x11\xf5\xe7\x33\xee\x30\x1e\x26\x1a\x2c\xe8\x12\xb3\x1f\xc4\x9f"
        "\x86\x1a\x4a\x29\x40\x4f\x6d\x7c\x33\xdf\x69\xd0\x26\x76\x08\xe7\x96"
        "\x1a\x39\x6d\x67\x7f\xfd\x5b\x4e\x0c\xed\xc9\xa5\xf3\x4e\xd7\x2d\x7d"
        "\xb3\x4e\x2d\x81\x07\x07\xe4\x3a\xb7\x83\x10\xbd\xf1\xe3\xec\xd8\xf0"
        "\x26\xa5\x9b\xec\xe4\xe0\xa0\x1b\x4c\xb8\xbf\xc0\x40\x43\x54\x5f\xa8"
        "\xdb\xb2\xc3\x12\xa7\x49\xe0\xbc\x3d\x45\x08\xb3\x3f\x80\xdf\xcb\x8b"
        "\x5d\xb9\x16\x0b\xec\xd2\x32\x8e\x3c\x82\xf8\x24\x04\x81\xbc\xdd\x43"
        "\x3b\xff\x76\x1a\x88\xc9\xce\x44\xbc\xe2\x95\x9a\x94\x77\xeb\x19\x4e"
        "\x49\x10\x30\x59\x7d\xd0\x67\x8b\x75\xe0\xf9\x0d\xf4\xe8\x93\x1a\xaf"
        "\xeb\x76\xc5\xb3\x5f\xee\xcd\x4f\x68\x59\x11\x39\xd9\xda\x22\x5e\x34"
        "\x97\xd0\xdf\x6f\x4f\x12\x8d\x4b\xf6\xdd\x20\x0f\x3c\x92\xb5\x73\xc4"
        "\xfe\xaf\x45\x29\xa7\x6c\xdd\x0c\x7b\x43\xac\x75\xb5\x6c\x65\x4f\x1f"
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        "\xb6\x7b\x6a\x7c\x51\xf0\x26\x2c\xb5\x11\xd3\x07\x75\x7a\x69\xe6\x88"
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        "\x27\xa3\xac\x44\xca\x03\x1c\xaf\xba\xe8\x7c\x90\x4b\xc5\x0c\xf5\xc7"
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        "\x80\x56\xde\x1c\x61\x63\x0d\x7f\xa7\xba\x56\x4a\x01\x56\x84\xc0\x68"
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        "\x3b\xd4\x35\x8d\x02\xc4\xc4\xcb\x3e\x51\x4b\x7d\xb8\x92\x55\xdf\x4d"
        "\xd8\xa0\xdf\xb5\xa0\xe9\xdf\x2e\x20\x89\x00\x3d\xf7\x81\xd3\x48\xa4"
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        "\x3d\xa9\xdb\xab\x2a\xfb\x5a\x5f\xa6\xb1\xa5\xed\x30\x08\xd4\x60\xd6"
        "\xe5\xb0\x60\x88\x44\xd5\xc2\x0b\x2a\x06\x54\xf4\x86\x87\x63\x97\xc2"
        "\xc1\x1d\x8b\xab\x6b\x45\xd3\x72\x90\x16\xfe\xa5\x15\xa7\x73\x58\x08"
        "\x31\x68\x99\xc6\x27\xbc\x2b\x28\x1b\x0a\x74\xfe\x7e\xf7\x23\x1e\xd6"
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        "\x05\x13\x0f\xbd\xb7\x13\xd4\x7d\x41\x01\x4d\x11\xad\xf1\x3d\xa7\x4f"
        "\xe9\x20\x8d\xad\xee\x55\x0f\x73\x0d\x97\x74\xed\x05\xf3\x9d\x24\xd6"
        "\x30\x1c\x86\xf8\x03\xf4\xb3\xbb\x14\x62\xee\x20\x22\xab\x37\x75\x63"
        "\x80\x0d\x3b\x8e\x72\x39\xc3\x32\x6e\x7a\x61\x41\x49\xb6\xd4\x18\x3b"
        "\x78\x0a\x72\xd0\xd5\xea\xb8\xdb\x69\x28\x03\xe9\x7a\x09\x56\x61\xd7"
        "\xc5\x03\xb5\x4e\xeb\x0e\x0c\x8b\x63\xa7\x14\xd1\xb1\x56\x22\x84\xc7"
        "\xc2\x04\xda\x61\x94\x43\x10\x61\xfc\x4d\xe2\xf5\xa6\x20\xcb\xe5\x2a"
        "\x2d\xc4\xd5\xa8\x84\xb7\x64\xc8\x18\xfb\xbd\xf0\x1f\x1f\x88\xf1\xeb"
        "\xc9\xcf\x00\xa8\x01\x37\x5d\xc6\xe9\x1e\x6c\x24\xb0\x63\xe1\x35\xe0"
        "\x47\x69\x20\x6b\x54\x7e\xc4\xab\x0b\xfa\x6c\x1a\x71\x6b\x22\x49\xb6"
        "\x02\xdd\xff\xbb\xbc\x69\x8e\x53\xf9\xcb\xf5\x3f\x69\xe0\xbe\xec\x71"
        "\x3c\x05\x69\x00\xa9\xc9\x0e\xfb\x6f\x00\x46\x37\x79\x9e\xae\x31\x80"
        "\x20\x12\x87\x9a\xe9\x1e\x41\xfd\x39\xb8\x82\x17\xd5\x6a\xc5\xa9\xf7"
        "\xad\xbc\x51\x76\xdf\x5f\xc9\x59\x76\x60\xa3\x42\xc7\x44\x7c\x6c\xcd"
        "\xba\xcb\xbd\x3a\xa7\x7a\x5b\x58\x93\x76\x65\xa4\x16\x40\x49\xd8\x27"
        "\x66\x22\xd3\xf4\x76\x4f\xa7\xf1\x29\xf1\xa9\x0c\x75\xa0\x8e\x4a\x30"
        "\xa6\x01\x72\x19\x6b\x25\x39\xa4\x0b\x9f\x08\x2a\xe4\x66\x30\x02\xf4"
        "\x67\x6f\xa1\x43\x29\x59\xd1\x61\x63\x33\xc4\x29\xff\xd9\xfa\x12\x9f"
        "\x40\x16\xa5\x1e\xc2\x80\x17\xc2\xa6\xed\xda\x23\x04\x11\xe8\x3c\x75"
        "\x17\x23\xfc\x63\x32\x1e\x7d\x8d\x35\x8a\x2a\x1c\x2a\xc6\x47\x20\xdd"
        "\x48\x6d\xd1\x9b\x49\x6f\x29\xe0\xcf\x70\xfe\xc6\x6a\xd0\xe7\x72\xc2"
        "\x3a\xd3\x82\x5d\x00\x00\x00\x29\xb7\x45\xbf\x1a\x50\x6f\xa4\x83\xe7"
        "\x97\x5c\x04\x4c\x7e\x3f\x3c\x69\x86\xc9\x9e\xb5\x96\x10\x14\x7a\x26"
        "\xd0\x3e\x26\x00\x32\x7a\x06\xba\x99\xa6\xf7\x4e\x4e\x62\x87\x34\x62"
        "\xcb\xcb\xa9\x5b\x5f\xb1\x30\x86\x6b\x48\xdc\x6c\x87\x6a\xc6\x32\x32"
        "\x54\x48\x7f\xb9\xc5\x34\x8d\x93\x36\x83\xbd\x0f\x80\x21\xe4\xf1\x9d"
        "\x7f\x5f\x72\x7f\x16\x03\x83\xd8\x5f\xc3\xe5\x8a\xaa\xc7\xaf\x95\x75"
        "\x44\x18\xac\xf1\xcf\xab\x66\x9e\x6c\x1b\xf4\x02\x00\x3f\xae\x84\x64"
        "\xdb\x9e\x9f\x3e\xfc\x1c\x22\x95\xe9\xed\xeb\xb2\x03\x52\xbd\x05\xa4"
        "\x47\x25\x5a\xe1\xfb\xe8\x7a\x40\x70\x95\xc5\x0d\x26\xf9\xa0\xc9\x31"
        "\x68\x72\x4f\xd9\x20\x4e\x83\xd9\x31\x13\x0d\x92\x36\xf4\x79\x70\x61"
        "\x8a\x18\xbc\xab\x68\x4f\xca\x78\x92\x38\xa5\x4b\xc3\x4d\x8b\x41\xfb"
        "\x61\xe3\x74\x4a\x4c\x29\xb9\xf0\xe2\x0d\xbc\x6d\xaa\x37\x75\xa9\x76"
        "\x6d\x14\x8c\x21\x9f\x9c\xa6\xb1\x46\xa4\x39\x70\x78\xf5\xe3\xe0\x6d"
        "\x76\xb7\x09\x9d\x7c\x41\x72\xf6\x5b\x01\x65\xe4\xa0\x43\xdc\xc7\x95"
        "\x61\xd7\x58\x9f\xf0\x4f\x22\x4b\x56\x19\xf6\x65\x90\xf6\x77\x3c\x39"
        "\x97\x9e\xfb\x81\x25\x50\xdc\x19\x32\xb0\x15\x81\xe2\xe4\x1a\x1b\x61"
        "\x2b\x5f\x9c\xd0\xdc\x7b\x1b\x1b\xd2\x84\xb7\xad\xa3\xf4\x36\xc6\x3e"
        "\x89\x57\xe6\xa6\xca\x11\xc3\xf5\x3f\x23\xdd\xb2\xa9\x62\x41\x24\xec"
        "\xcd\xf9\xa1\x8a\xf2\x24\x33\x1a\x88\xd7\x91\x26\x68\xe4\x6f\x49\x4e"
        "\xee\x8f\x1f\xa0\xa5\xf2\x65\x62\xce\xb7\x6e\x54\x35\x3c\xdd\xd6\x16"
        "\xdb\x11\xa6\xee\x70\xb5\x23\x7e\x8a\xb8\x11\x15\x4e\x69\xcd\x5f\x72"
        "\x31\x32\xc7\x23\xf3\x7c\xd9\x8d\xb8\x73\x58\x35\x48\xb0\x85\x3a\x1c"
        "\x46\x52\xb7\x0c\xda\xd9\xa6\x9e\xd7\x6a\x28\xc7\xc7\x4f\x67\xa7\xbe"
        "\x39\x7c\xe1\xa8\xea\x57\x62\x89\x43\xd3\x47\xf9\x86\x14\x52\x5a\xb8"
        "\xf1\xd9\x1f\x07\xe6\x5b\xcb\x8e\xbe\x15\x28\x19\xcb\xd7\xd6\xb2\x36"
        "\x58\x5c\x31\xd3\x27\x08\x24\x09\xd6\x88\xed\xbc\xd0\x75\x7b\x75\x1d"
        "\xd2\x25\xc2\xb8\x31\x77\xe4\x56\xa9\x64\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00",
        4579));
    NONFAILING(memcpy(
        (void*)0x20000840,
        "\x78\x9c\xec\xdd\xcd\x6b\x1c\xe5\x1f\x00\xf0\xef\x6c\x92\xa6\xbf\xb4"
        "\x3f\x13\x41\xd0\x7a\x0a\x08\x1a\x28\xdd\x98\x1a\x5b\x05\x0f\x15\x0f"
        "\x22\x58\x28\xe8\xd9\x76\xd9\x6c\x43\xcd\x6e\xb6\x64\x37\xa5\x09\x01"
        "\x2d\x22\x78\x11\x54\x3c\x08\x7a\xe9\xd9\x97\x7a\xf3\xea\xcb\x55\xff"
        "\x0b\x0f\xd2\x52\x35\x2d\x56\x3c\x48\x64\x36\xb3\xe9\xb6\xd9\x4d\x37"
        "\x6d\x92\x45\xf7\xf3\x81\xa7\x7d\x9e\x99\xd9\x3c\xf3\x9d\x67\x66\x9e"
        "\x67\x77\x86\x99\x00\xfa\xd6\x78\xfa\x4f\x2e\xe2\x50\x44\x7c\x90\x44"
        "\x8c\x66\xd3\x93\x88\x18\x6a\xe4\x06\x23\x4e\xac\x2f\x77\x6b\x75\xa5"
        "\x98\xa6\x24\xd6\xd6\x5e\xfb\x2d\x69\x2c\x73\x73\x75\xa5\x18\x2d\x9f"
        "\x49\x1d\xc8\x0a\x8f\x45\xc4\xf7\xef\x46\x1c\xce\x6d\xae\xb7\xb6\xb4"
        "\x3c\x57\x28\x97\x4b\x0b\x59\x79\xb2\x5e\x39\x3f\x59\x5b\x5a\x3e\x72"
        "\xae\x52\x98\x2d\xcd\x96\xe6\x8f\x4d\x4d\x4f\x1f\x3d\xfe\xec\xf1\x63"
        "\x3b\x17\xeb\x1f\x3f\x2d\x1f\xbc\xf6\xe1\xcb\x4f\x7d\x75\xe2\xaf\x77"
        "\x1e\xbd\xf2\xfe\x0f\x49\x9c\x88\x83\xd9\xbc\xd6\x38\x76\xca\x78\x8c"
        "\x67\xdb\x64\x28\xdd\x84\x77\x78\x69\xa7\x2b\xeb\xb1\xa4\xd7\x2b\xc0"
        "\x7d\x49\x0f\xcd\x81\xf5\xa3\x3c\x0e\xc5\x68\x0c\x34\x72\x00\xc0\x7f"
        "\xd9\x5b\x11\xb1\x06\x00\xf4\x99\x44\xff\x0f\x00\x7d\xa6\xf9\x3b\xc0"
        "\xcd\xd5\x95\x62\x33\xf5\xf6\x17\x89\xbd\x75\xfd\xc5\x88\xd8\xbf\x1e"
        "\x7f\xf3\xfa\xe6\xfa\x9c\xc1\xec\x9a\xdd\xfe\xc6\x75\xd0\x91\x9b\xc9"
        "\x1d\x57\x46\x92\x88\x18\xdb\x81\xfa\xc7\x23\xe2\xb3\x6f\xde\xf8\x22"
        "\x4d\xb1\x4b\xd7\x21\x01\xda\x79\xfb\x52\x44\x9c\x19\x1b\xdf\x7c\xfe"
        "\x4f\x36\xdd\xb3\xb0\x5d\x4f\x77\xb1\xcc\xf8\x5d\x65\xe7\x3f\xd8\x3b"
        "\xdf\xa6\xe3\x9f\xe7\xda\x8d\xff\x72\x1b\xe3\x9f\x68\x33\xfe\x19\x6e"
        "\x73\xec\xde\x8f\x7b\x1f\xff\xb9\xab\x3b\x50\x4d\x47\xe9\xf8\xef\x85"
        "\x96\x7b\xdb\x6e\xb5\xc4\x9f\x19\x1b\xc8\x4a\xff\x6f\x8c\xf9\x86\x92"
        "\xb3\xe7\xca\xa5\xf4\xdc\xf6\x50\x44\x4c\xc4\xd0\x70\x5a\x9e\xda\xa2"
        "\x8e\x89\x1b\x7f\xdf\xe8\x34\xaf\x75\xfc\xf7\xfb\x47\x6f\x7e\x9e\xd6"
        "\x9f\xfe\x7f\x7b\x89\xdc\xd5\xc1\xe1\x3b\x3f\x33\x53\xa8\x17\x1e\x24"
        "\xe6\x56\xd7\x2f\x45\x3c\x3e\xd8\x2e\xfe\x64\xa3\xfd\x93\x0e\xe3\xdf"
        "\x53\x5d\xd6\xf1\xca\xf3\xef\x7d\xda\x69\x5e\x1a\x7f\x1a\x6f\x33\x6d"
        "\x8e\x7f\x77\xad\x5d\x8e\x78\xb2\x6d\xfb\xdf\xbe\xa3\x2d\xd9\xf2\xfe"
        "\xc4\xc9\xc6\xee\x30\xd9\xdc\x29\xda\xf8\xfa\xe7\x4f\x46\x3a\xd5\xdf"
        "\xda\xfe\x69\x4a\xeb\x6f\x7e\x17\xd8\x0b\x69\xfb\x8f\x6c\x1d\xff\x58"
        "\xd2\x7a\xbf\x66\x6d\xfb\x75\xfc\x78\x79\xf4\xbb\x4e\xf3\xee\x1d\x7f"
        "\xfb\xfd\x7f\x5f\xf2\x7a\x23\xbf\x2f\x9b\x76\xb1\x50\xaf\x2f\x4c\x45"
        "\xec\x4b\x5e\xdd\x3c\xfd\xe8\xed\xcf\x36\xcb\xcd\xe5\xd3\xf8\x27\x9e"
        "\x68\x7f\xfc\x6f\xb5\xff\xa7\xdf\x09\xcf\x74\x19\xff\xe0\xb5\x5f\xbf"
        "\xbc\xff\xf8\x77\x57\x1a\xff\xcc\xb6\xda\x7f\xfb\x99\x2b\xb7\xe6\x06"
        "\x3a\xd5\xdf\x5d\xfb\x4f\x37\x72\x13\xd9\x94\x6e\xce\x7f\xdd\xae\xe0"
        "\x83\x6c\x3b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\xe8\x56\x2e\x22\x0e\x46\x92\xcb\x6f\xe4\x73\xb9"
        "\x7c\x7e\xfd\x1d\xde\x8f\xc4\x48\xae\x5c\xad\xd5\x0f\x9f\xad\x2e\xce"
        "\xcf\x44\xe3\x5d\xd9\x63\x31\x94\x6b\x3e\xea\x72\xb4\xe5\x79\xa8\x53"
        "\xd9\xf3\xf0\x9b\xe5\xa3\x77\x95\x9f\x89\x88\x87\x23\xe2\xe3\xe1\xff"
        "\x35\xca\xf9\x62\xb5\x3c\xd3\xeb\xe0\x01\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x20\x73\xa0\xc3\xfb\xff\x53\xbf\x0c\xf7\x7a"
        "\xed\x00\x80\x5d\xb3\xbf\xd7\x2b\x00\x00\xec\x39\xfd\x3f\x00\xf4\x1f"
        "\xfd\x3f\x00\xf4\x1f\xfd\x3f\x00\xf4\x1f\xfd\x3f\x00\xf4\x1f\xfd\x3f"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\xbb\xec\xd4\xc9\x93\x69\x5a\xfb\x73\x75\xa5\x98\x96\x67\x2e\x2c\x2d"
        "\xce\x55\x2f\x1c\x99\x29\xd5\xe6\xf2\x95\xc5\x62\xbe\x58\x5d\x38\x9f"
        "\x9f\xad\x56\x67\xcb\xa5\x7c\xb1\x5a\xb9\xd7\xdf\x2b\x57\xab\xe7\xa7"
        "\x63\x7e\xf1\xe2\x64\xbd\x54\xab\x4f\xd6\x96\x96\x4f\x57\xaa\x8b\xf3"
        "\xf5\xd3\xe7\x2a\x85\xd9\xd2\xe9\xd2\xd0\x9e\x44\x05\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xdb\x53\x5b\x5a\x9e\x2b\x94"
        "\xcb\xa5\x05\x19\x19\x19\x99\x8d\x4c\xaf\xcf\x4c\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\xff\x0e\xff\x04\x00\x00\xff\xff\x3e\x07\x2a\x2f",
        1883));
    NONFAILING(syz_mount_image(0x20001140, 0x200007c0, 0x2000480, 0x20008440, 1,
                               0x75b, 0x20000840));
    break;
  case 1:
    NONFAILING(*(uint64_t*)0x200014c0 = 0xc0000000);
    NONFAILING(*(uint64_t*)0x200014c8 = 0);
    NONFAILING(*(uint64_t*)0x200014d0 = 0);
    NONFAILING(*(uint64_t*)0x200014d8 = 0);
    NONFAILING(*(uint32_t*)0x200014e0 = 0x3a);
    NONFAILING(*(uint64_t*)0x200014e8 = 0x20000440);
    NONFAILING(*(uint64_t*)0x200014f0 = 0x2b);
    NONFAILING(*(uint64_t*)0x200014f8 = 0);
    NONFAILING(*(uint64_t*)0x20001500 = 0);
    NONFAILING(*(uint64_t*)0x20001508 = 0);
    NONFAILING(*(uint32_t*)0x20001510 = -1);
    NONFAILING(syz_clone3(0x200014c0, 0x58));
    break;
  case 2:
    NONFAILING(*(uint64_t*)0x20000380 = 0);
    NONFAILING(*(uint64_t*)0x20000388 = 0);
    NONFAILING(*(uint64_t*)0x20000390 = 0);
    NONFAILING(*(uint64_t*)0x20000398 = 0);
    NONFAILING(*(uint64_t*)0x200003a0 = 0x20000480);
    NONFAILING(memcpy(
        (void*)0x20000480,
        "\xdd\xbf\x20\x11\x80\x6e\x67\x20\xf3\x19\xcf\x73\x28\x57\x6c\x50\x12"
        "\x72\x06\x76\xd8\x4a\x28\x50\x00\x3d\xe9\xdb\x12\xcf\xcf\x67\x8d\x01"
        "\x9c\x76\xb7\x93\x20\x58\x2d\x67\xd9\xd9\xe5\x71\xb9\x73\x61\x6e\x6b"
        "\x40\x78\x1e\xc3\xf1\xb4\x35\xb3\xf0\x29\x89\xf9\x4c\x0f\x97\x94\x8d"
        "\x7e\xb4\x0f\xa3\x0d\x34\xab\x7b\x60\xe5\x49\x47\x26\x9e\xbf\x42\x00"
        "\x4d\x94\x3f\xeb\x7c\x6a\xaf\x40\xe3\x05\x79\x7c\x4d\x8e\xe5\x02\x25"
        "\x0e\xcf\xa8\x96\x9a\x5e\x46\x51\x2b\x84\xd3\x91\x0a\xda\xdd\x7b\xaf"
        "\x16\x83\x65\x12\xe0\x1c\x66\x00\xbf\x3d\xba\x33\x0f\x62\x2a\x89\x0b"
        "\x81\xcf\xe7\xe3\xf5\x19\x8e\xaa\x47\x9f\x8f\xb4\xbb\x6c\xb2\x9d\xa0"
        "\x17\x38\xd3\xc7\x31\x11\x8d\x05\xcc\x82\xb7\x01\x8f\x2f\xb6\xb3\x12"
        "\xaa\xd5\xa9\x40\x88\x0f\x1c\x43\xec\xb0\x52\x62\x4e\x41\xd8\xcb\xc7"
        "\xa0\x51\x94\xce\x7d\xe7\xc5\x88\xea\x42\x8b\x45\xcd\xc5\x0c\x07\xb5"
        "\xfc\xeb\x3f\x16\xff\x58\x4c\xb3\xe6\x76\xa5\xeb\xf4\x11\x37\x30\x73"
        "\x3e\x88\xe1\xf9\xfa\x3f\xc2\x20\xdc\x2e\xe0\x23\x3d",
        234));
    NONFAILING(*(uint64_t*)0x200003a8 = 0xea);
    syscall(__NR_pwritev, -1, 0x20000380ul, 3ul, 0xf1, 4);
    break;
  case 3:
    NONFAILING(memcpy((void*)0x20000180, "./bus\000", 6));
    syscall(__NR_open, 0x20000180ul, 0x143042ul, 0ul);
    break;
  case 4:
    NONFAILING(memcpy((void*)0x20000380, "/dev/loop", 9));
    NONFAILING(*(uint8_t*)0x20000389 = 0x30);
    NONFAILING(*(uint8_t*)0x2000038a = 0);
    NONFAILING(memcpy((void*)0x20000140, "./bus\000", 6));
    syscall(__NR_mount, 0x20000380ul, 0x20000140ul, 0ul, 0x1000ul, 0ul);
    break;
  case 5:
    NONFAILING(memcpy((void*)0x20000400, "./bus\000", 6));
    res = syscall(__NR_open, 0x20000400ul, 0x14113eul, 0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 6:
    syscall(__NR_write, r[0], 0x200000c0ul, 0x208e24bul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  setup_sysctl();
  setup_binfmt_misc();
  install_segv_handler();
  do_sandbox_none();
  return 0;
}