// https://syzkaller.appspot.com/bug?id=21f308ebf4126d1c2e875716fc97b4776e277607
// 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/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/tcp.h>
#include <linux/veth.h>

#ifndef __NR_getdents64
#define __NR_getdents64 61
#endif
#ifndef __NR_io_setup
#define __NR_io_setup 0
#endif
#ifndef __NR_io_submit
#define __NR_io_submit 2
#endif
#ifndef __NR_memfd_create
#define __NR_memfd_create 279
#endif
#ifndef __NR_mmap
#define __NR_mmap 222
#endif
#ifndef __NR_openat
#define __NR_openat 56
#endif
#ifndef __NR_write
#define __NR_write 64
#endif

static unsigned long long procid;

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

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

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

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

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

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

static void use_temporary_dir(void)
{
  char tmpdir_template[] = "./syzkaller.XXXXXX";
  char* tmpdir = mkdtemp(tmpdir_template);
  if (!tmpdir)
    exit(1);
  if (chmod(tmpdir, 0777))
    exit(1);
  if (chdir(tmpdir))
    exit(1);
}

static 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 struct nlmsg nlmsg;

#define DEVLINK_FAMILY_NAME "devlink"

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

static struct nlmsg nlmsg2;

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

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

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

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

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

error:
  close(sock);
}

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

#define 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)) {
  }
}

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

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
retry:
  while (umount2(dir, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW) == 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, MNT_DETACH | UMOUNT_NOFOLLOW))
        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, MNT_DETACH | UMOUNT_NOFOLLOW))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

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

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

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

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

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)
{
  int i, call, thread;
  for (call = 0; call < 10; 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();
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    reset_loop();
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      sleep_ms(1);
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0x0};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    NONFAILING(memcpy((void*)0x20000080, "exfat\000", 6));
    NONFAILING(memcpy((void*)0x20000040, "./file0\000", 8));
    NONFAILING(memcpy((void*)0x200000c0, "umask", 5));
    NONFAILING(*(uint8_t*)0x200000c5 = 0x3d);
    NONFAILING(sprintf((char*)0x200000c6, "%023llo", (long long)8));
    NONFAILING(*(uint8_t*)0x200000dd = 0x2c);
    NONFAILING(memcpy((void*)0x200000de, "errors=continue", 15));
    NONFAILING(*(uint8_t*)0x200000ed = 0x2c);
    NONFAILING(memcpy((void*)0x200000ee, "iocharset", 9));
    NONFAILING(*(uint8_t*)0x200000f7 = 0x3d);
    NONFAILING(memcpy((void*)0x200000f8, "cp865", 5));
    NONFAILING(*(uint8_t*)0x200000fd = 0x2c);
    NONFAILING(memcpy((void*)0x200000fe, "umask", 5));
    NONFAILING(*(uint8_t*)0x20000103 = 0x3d);
    NONFAILING(sprintf((char*)0x20000104, "%023llo", (long long)1));
    NONFAILING(*(uint8_t*)0x2000011b = 0x2c);
    NONFAILING(memcpy((void*)0x2000011c, "errors=continue", 15));
    NONFAILING(*(uint8_t*)0x2000012b = 0x2c);
    NONFAILING(memcpy((void*)0x2000012c, "utf8", 4));
    NONFAILING(*(uint8_t*)0x20000130 = 0x2c);
    NONFAILING(memcpy((void*)0x20000131, "allow_utime", 11));
    NONFAILING(*(uint8_t*)0x2000013c = 0x3d);
    NONFAILING(sprintf((char*)0x2000013d, "%023llo", (long long)4));
    NONFAILING(*(uint8_t*)0x20000154 = 0x2c);
    NONFAILING(memcpy((void*)0x20000155, "iocharset", 9));
    NONFAILING(*(uint8_t*)0x2000015e = 0x3d);
    NONFAILING(memcpy((void*)0x2000015f, "iso8859-6", 9));
    NONFAILING(*(uint8_t*)0x20000168 = 0x2c);
    NONFAILING(memcpy((void*)0x20000169, "utf8", 4));
    NONFAILING(*(uint8_t*)0x2000016d = 0x2c);
    NONFAILING(*(uint8_t*)0x2000016e = 0);
    NONFAILING(memcpy(
        (void*)0x20002a40,
        "\x78\x9c\xec\xdc\x09\x74\x55\x45\xd6\x28\xe0\xda\x55\x75\x42\x88\x11"
        "\xaf\x11\x19\x02\xb5\x6b\x1f\xb8\x62\x80\x22\x22\x22\x32\x88\x88\x0c"
        "\x22\x22\x22\x22\x22\x32\x89\x80\x88\x11\x11\x11\x01\x11\x02\x32\x89"
        "\x18\x10\x11\x90\x31\x22\x32\x04\x04\x44\x86\x08\x11\xc3\x3c\x0f\x32"
        "\x0b\x18\x69\x44\x44\x44\x64\x92\x49\xa0\xde\xc2\xee\x7e\xfc\xdd\x76"
        "\x2f\xfe\xf7\x77\xbf\xe6\xbd\x95\xfd\xad\x55\x2b\xb5\x73\xee\xde\x77"
        "\x9f\xbb\xb3\x72\xcf\xb9\x6b\x25\x3f\x75\x1d\x56\xab\x49\xed\xea\x8d"
        "\x88\x48\xfc\x4b\xe0\xcf\x5f\x52\x85\x10\xb1\x42\x88\x41\x42\x88\x9b"
        "\x84\x10\x81\x10\xa2\x7c\x42\xf9\x84\x2b\xc7\xf3\x2a\x48\xfd\xd7\x9e"
        "\x84\xfd\x7b\x3d\x91\x71\xbd\x3b\x60\xd7\x13\xcf\x3f\x77\xe3\xf9\xe7"
        "\x6e\x3c\xff\xdc\x8d\xe7\x9f\xbb\xf1\xfc\x73\x37\x9e\x7f\xee\xc6\xf3"
        "\xcf\xdd\x78\xfe\x8c\xe5\x66\x5b\x66\x14\xbe\x99\x57\xee\x5d\xfc\xf9"
        "\x7f\x6e\xc6\xef\xff\xb9\x1b\xcf\x3f\x77\xe3\xf9\xe7\x6e\x3c\xff\xdc"
        "\x8d\xe7\x9f\xbb\xf1\xfc\x73\x37\x9e\x7f\xee\xc6\xf3\xcf\xdd\x78\xfe"
        "\x8c\xe5\x66\xd7\xfb\xf3\xe7\xff\x0f\xd6\x5f\x5f\xaa\xeb\xdd\xc7\x35"
        "\x56\xf0\x3f\xca\xbb\xbe\x3f\x7d\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x72\x8b\x73\xfe\x2a\x2d\x84\xf8\xeb\xfe\x7a\xf7\xc5\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\xb1\x7f\x1f\x9f\xe7\x7a\x77\xc0\x18\x63\x8c\x31\xc6"
        "\x18\x63\x8c\xb1\xff\xfb\x40\x48\xa1\x84\x16\x81\x88\x11\x79\x44\xac"
        "\xc8\x2b\xe2\xc4\x0d\x22\x5e\xdc\x28\xf2\x89\x9b\x44\x44\xdc\x2c\x12"
        "\xc4\x2d\x22\xbf\xb8\x55\x14\x10\x05\x45\x21\x51\x58\x24\x8a\x22\xa2"
        "\xa8\x30\x02\x85\x15\x24\x42\x51\x4c\x14\x17\x51\x71\x9b\x28\x21\x6e"
        "\x17\x49\xa2\xa4\x28\x25\x4a\x0b\x27\xca\x88\x64\x71\x87\x28\x2b\xee"
        "\x14\xe5\xc4\x5d\xa2\xbc\xb8\x5b\x54\x10\xf7\x88\x8a\xa2\x92\xa8\x2c"
        "\xaa\x88\x7b\x45\x55\x71\x9f\xa8\x26\xee\x17\xd5\xc5\x03\xa2\x86\xa8"
        "\x29\x6a\x89\xda\xe2\x41\x51\x47\x3c\x24\xea\x8a\x87\x45\x3d\xf1\x88"
        "\xa8\x2f\x1e\x15\x0d\xc4\x63\xa2\xa1\x78\x5c\x34\x12\x4f\x88\xc6\xe2"
        "\x49\xd1\x44\x3c\x25\x9a\x8a\xa7\x45\x33\xd1\x5c\xb4\x10\x2d\x45\xab"
        "\xff\x51\xfe\xeb\xa2\xa7\x78\x43\xf4\x12\xbd\x45\xaa\xe8\x23\xfa\x8a"
        "\x37\x45\x3f\xd1\x5f\x0c\x10\x03\xc5\x20\xf1\x96\x18\x2c\xde\x16\x43"
        "\xc4\x3b\x22\x4d\x0c\x15\xc3\xc4\xbb\x62\xb8\x78\x4f\x8c\x10\xef\x8b"
        "\x91\x62\x94\x18\x2d\x3e\x10\x63\xc4\x58\x31\x4e\x8c\x17\x13\xc4\x44"
        "\x91\x2e\x3e\x14\x93\xc4\x47\x62\xb2\xf8\x58\x4c\x11\x53\xc5\x34\x31"
        "\x5d\x64\x88\x19\x62\xa6\xf8\x44\xcc\x12\xb3\xc5\x1c\xf1\xa9\x98\x2b"
        "\x3e\x13\xf3\xc4\x7c\xb1\x40\x2c\x14\x99\xe2\x73\xb1\x48\x2c\x16\x59"
        "\xe2\x0b\xb1\x44\x7c\x29\xb2\xc5\x52\xb1\x4c\x2c\x17\x2b\xc4\x4a\xb1"
        "\x4a\xac\x16\x6b\xc4\x5a\xb1\x4e\xac\x17\x1b\xc4\x46\xb1\x49\x6c\x16"
        "\x5b\xc4\x57\x62\xab\xd8\x26\xb6\x8b\x1d\x62\xa7\xd8\x25\x76\x8b\xaf"
        "\xc5\x1e\xb1\x57\xec\x13\xdf\x88\x1c\xf1\xed\xff\x61\xfe\xd9\xbf\xcb"
        "\xef\x06\x02\x04\x48\x90\xa0\x41\x43\x0c\xc4\x40\x2c\xc4\x42\x1c\xc4"
        "\x41\x3c\xc4\x43\x3e\xc8\x07\x11\x88\x40\x02\x24\x40\x7e\xc8\x0f\x05"
        "\xa0\x00\x14\x82\x42\x90\x08\x89\x50\x14\x8a\x02\x02\x02\x01\x41\x31"
        "\x28\x06\x51\x88\x42\x09\x28\x01\x49\x90\x04\xa5\xa0\x14\x38\x70\x90"
        "\x0c\xc9\x50\x16\xee\x84\x72\x50\x0e\xca\x43\x79\xa8\x00\x15\xa0\x22"
        "\x54\x82\x4a\x50\x05\xaa\x40\x55\xa8\x0a\xd5\xa0\x1a\x54\x87\xea\x50"
        "\x03\x6a\x40\x2d\xa8\x05\x0f\xc2\x83\xf0\x10\xd4\x85\xba\x50\x0f\xea"
        "\x41\x7d\xa8\x0f\x0d\xa0\x01\x34\x84\x86\xd0\x08\x1a\x41\x63\x68\x0c"
        "\x4d\xa0\x09\x34\x85\xa6\xd0\x0c\x9a\x41\x0b\x68\x01\xad\xa0\x15\xb4"
        "\x86\xd6\xd0\x06\xda\x40\x3b\x68\x07\xed\xa1\x3d\x74\x80\x0e\x90\x02"
        "\x29\xd0\x11\x3a\x42\x27\xe8\x04\x9d\xa1\x33\x74\x81\x2e\xd0\x15\xba"
        "\x42\x37\xe8\x0e\xdd\xe1\x75\x78\x1d\xde\x80\x37\xa0\x37\xd4\x90\x7d"
        "\xa0\x2f\xf4\x85\x7e\xd0\x0f\x06\xc0\x40\x18\x08\x6f\xc1\x60\x78\x1b"
        "\xde\x86\x77\x20\x0d\x86\xc2\x30\x78\x17\xde\x85\xf7\x60\x04\x9c\x81"
        "\x91\x30\x0a\x46\xc3\x68\xa8\x2a\xc7\xc2\x38\x18\x0f\x24\x27\x42\x3a"
        "\xa4\xc3\x24\x98\x04\x93\x61\x32\x4c\x81\xa9\x30\x15\xa6\x43\x06\xcc"
        "\x80\x99\x30\x13\x66\xc1\x6c\x98\x0d\x9f\xc2\x5c\xf8\x0c\x3e\x83\xf9"
        "\x30\x1f\x16\x42\x26\x64\xc2\x22\x58\x0c\x59\x90\x05\x4b\xe0\x2c\x64"
        "\xc3\x52\x58\x06\xcb\x61\x05\xac\x84\x15\xb0\x1a\xd6\xc0\x6a\x58\x07"
        "\xeb\x61\x1d\x6c\x84\x8d\xb0\x19\x36\xc3\x57\xf0\x15\x6c\x83\x6d\xb0"
        "\x03\x76\xc0\x2e\xd8\x05\x5f\xc3\xd7\xb0\x17\xf6\x42\x1a\xe4\x40\x0e"
        "\xec\x87\xfd\x70\x00\x0e\xc0\x41\x38\x08\x87\xe0\x10\x1c\x86\xc3\x70"
        "\x04\x8e\xc0\x51\x38\x0a\xc7\xe0\x18\x1c\x87\x13\x70\x12\x4e\xc0\x69"
        "\x38\x0d\x67\xe0\x2c\x9c\x83\x73\x70\x01\x2e\xc0\x45\x78\x35\xf1\x87"
        "\xc6\xbb\x4a\xae\x4d\x13\xf2\x0a\x2d\xb5\x8c\x91\x31\x32\x56\xc6\xca"
        "\x38\x19\x27\xe3\x65\xbc\xcc\x27\xf3\xc9\x88\x8c\xc8\x04\x99\x20\xf3"
        "\xcb\xfc\xb2\x80\x2c\x20\x0b\xc9\x42\x32\x51\x26\xca\xa2\xb2\xa8\x44"
        "\x89\x92\x64\x28\x8b\xc9\x62\x32\x2a\xa3\xb2\x84\x2c\x21\x93\x64\x92"
        "\x2c\x25\x4b\x49\x27\x9d\x4c\x96\xc9\xb2\xac\x2c\x2b\xcb\xc9\x72\xb2"
        "\xbc\xbc\x5b\x56\x90\xf7\xc8\x8a\xb2\x92\x6c\xeb\xaa\xc8\x2a\xb2\xaa"
        "\x6c\xe7\xaa\xc9\xfb\x65\x75\x59\x5d\xd6\x90\x35\x65\x2d\x59\x5b\xd6"
        "\x96\x75\x64\x1d\x59\x57\xd6\x95\xf5\x64\x3d\x59\x5f\xd6\x97\x0d\xe4"
        "\x63\xb2\xa1\xec\x03\x03\xe0\x09\x79\x65\x32\x4d\xe4\x50\x68\x2a\x87"
        "\x41\x33\xd9\x5c\xb6\x90\x2d\xe5\x7b\xf0\x8c\x6c\x2d\x47\x40\x1b\xd9"
        "\x56\xb6\x93\xcf\xc9\x51\x30\x12\x3a\xc8\xd6\x2e\x45\xbe\x28\x3b\xca"
        "\x71\xd0\x49\xbe\x2c\xc7\xc3\x2b\xb2\x8b\x9c\x08\x5d\xe5\x6b\xb2\x9b"
        "\xec\x2e\x7b\xc8\xd7\x65\x4f\xd9\xc6\xf5\x92\xbd\xe5\x14\xe8\x23\xfb"
        "\xca\xe9\xd0\x4f\xf6\x97\x03\xe4\x40\x39\x0b\x6a\xca\x2b\x13\xab\x25"
        "\xdf\x91\x69\x72\xa8\x1c\x26\xdf\x95\x0b\xe1\x3d\x39\x42\xbe\x2f\x47"
        "\xca\x51\x72\xb4\xfc\x40\x8e\x91\x63\xe5\x38\x39\x5e\x4e\x90\x13\x65"
        "\xba\xfc\x50\x4e\x92\x1f\xc9\xc9\xf2\x63\x39\x45\x4e\x95\xd3\xe4\x74"
        "\x99\x21\x67\xc8\x99\xf2\x13\x39\x4b\xce\x96\x73\xe4\xa7\x72\xae\xfc"
        "\x4c\xce\x93\xf3\xe5\x02\xb9\x50\x66\xca\xcf\xe5\x22\xb9\x58\x66\xc9"
        "\x2f\xe4\x12\xf9\xa5\xcc\x96\x4b\xe5\x32\xb9\x5c\xae\x90\x2b\xe5\x2a"
        "\xb9\x5a\xae\x91\x6b\xe5\x3a\xb9\x5e\x6e\x90\x1b\xe5\x26\xb9\x59\x6e"
        "\x91\x5f\xc9\xad\x72\x9b\xdc\x2e\x77\xc8\x9d\x72\x97\xdc\x2d\xbf\x96"
        "\x7b\xe4\x5e\xb9\x4f\x7e\x23\x73\xe4\xb7\x72\xbf\xfc\x93\x3c\x20\xbf"
        "\x93\x07\xe5\xf7\xf2\x90\xfc\x41\x1e\x96\x3f\xca\x23\xf2\x27\x79\x54"
        "\xfe\x2c\x8f\xc9\xde\xf2\xb8\x3c\x21\x4f\xca\x53\xf2\xb4\xfc\x55\x9e"
        "\x91\x67\xe5\x39\x79\x5e\x5e\x90\xbf\xc9\x8b\xf2\x92\xbc\x2c\xbd\x14"
        "\x0a\x94\x54\x4a\x69\x15\xa8\x18\x95\x47\xc5\xaa\xbc\x2a\x4e\xdd\xa0"
        "\xe2\xd5\x8d\x2a\x9f\xba\x49\x45\xd4\xcd\x2a\x41\xdd\xa2\xf2\xab\x5b"
        "\x55\x01\x55\x50\x15\x52\x85\x55\xa2\x2a\xa2\x8a\x2a\xa3\x50\x59\x45"
        "\x2a\x54\xc5\x54\x71\x15\x55\xb7\xa9\x12\xea\x76\x95\xa4\x4a\xaa\x52"
        "\xaa\xb4\x72\xaa\x8c\x4a\x56\x77\xa8\xb2\xea\x4e\x55\x4e\xdd\xa5\xca"
        "\xab\xbb\x55\x05\x75\x8f\xaa\xa8\x2a\xa9\xca\xaa\x8a\xba\x57\x55\x55"
        "\xf7\xa9\x6a\xea\x7e\x55\x5d\x3d\xa0\x6a\xa8\x9a\xaa\x96\xaa\xad\x1e"
        "\x54\x75\xd4\x43\xaa\xae\x7a\x58\xd5\x53\x8f\xa8\xfa\xea\x51\xd5\x40"
        "\x3d\xa6\x1a\xaa\xc7\x55\x23\xf5\x84\x6a\xac\x9e\x54\x4d\xd4\x53\xaa"
        "\xa9\x7a\x5a\x35\x53\xcd\x55\x0b\xd5\x52\xb5\x52\xcf\xa8\xd6\xea\x59"
        "\xd5\x46\xb5\x55\xed\xd4\x73\xaa\xbd\x7a\x5e\x75\x50\x2f\xa8\x14\xf5"
        "\xa2\xea\xa8\x5e\x52\x9d\xd4\xcb\xaa\xb3\x7a\x45\x75\x51\xaf\xaa\xae"
        "\xea\x35\xd5\x4d\x75\x57\x3d\xd4\x25\x75\x59\x79\xd5\x4b\xf5\x56\xa9"
        "\xaa\x8f\xea\xab\xde\x54\xfd\x54\x7f\x35\x40\x0d\x54\x83\xd4\x5b\x6a"
        "\xb0\x7a\x5b\x0d\x51\xef\xa8\x34\x35\x54\x0d\x53\xef\xaa\xe1\xea\x3d"
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        "\x18\x1a\x4b\xe3\x68\x3c\x4d\xa0\x89\x94\x4e\x1f\xd2\x24\xfa\x88\x26"
        "\xd3\xc7\x34\x85\xa6\xd2\x34\x9a\x4e\x19\x34\x83\x66\xd2\x27\x34\x8b"
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        "\x39\x2d\xa2\xc5\x94\x45\x5f\xd0\x12\xfa\x92\xb2\x69\x29\x2d\xa3\xe5"
        "\xb4\x82\x56\xd2\x2a\x5a\x4d\x6b\x68\x2d\xad\xa3\xf5\xb4\x81\x36\xd2"
        "\x26\xda\x4c\x5b\xe8\x2b\xda\x4a\xdb\x08\x68\x07\xed\xa4\x5d\xb4\x9b"
        "\xbe\xa6\x3d\xb4\x97\xf6\xd1\x37\x94\x43\xdf\xd2\x7e\xfa\x13\x1d\xa0"
        "\xef\xe8\x20\x7d\x4f\x87\xe8\x07\x3a\x4c\x3f\xd2\x11\xfa\x89\x8e\xd2"
        "\xcf\x74\x8c\x7e\xa1\xe3\x74\x82\x4e\xd2\x29\x3a\x4d\xbf\xd2\x19\x3a"
        "\x4b\xe7\xe8\x3c\x5d\xa0\xdf\xe8\x22\x5d\xa2\xcb\xe4\x49\x84\x10\xca"
        "\x50\x85\x3a\x0c\xc2\x98\x30\x4f\x18\x1b\xe6\x0d\xe3\xc2\x1b\xc2\xf8"
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        "\x61\x81\xb0\x60\x58\x28\x2c\x1c\x26\x86\x45\xc2\xa2\xa1\x09\x31\xb4"
        "\x21\x85\x61\x58\x2c\x2c\x1e\x46\xc3\xdb\xc2\x12\xe1\xed\x61\x52\x58"
        "\x32\x2c\x15\x96\x0e\x5d\x58\x26\x4c\x0e\xef\x08\xcb\x86\x77\x86\xe5"
        "\xc2\xbb\xc2\xf2\xe1\xdd\x61\x85\xf0\x9e\xb0\x62\x58\x29\x7c\xea\x91"
        "\x2a\xe1\xbd\x61\xd5\xf0\xbe\xb0\x5a\x78\x7f\x58\x3d\x7c\x20\xac\x11"
        "\xd6\x0c\x6b\x85\xb5\xc3\x07\xc3\x3a\xe1\x43\x61\xdd\xf0\xe1\xb0\x5e"
        "\xf8\x48\x58\x2e\x7c\x34\x6c\x10\x3e\x16\x36\x0c\x1f\x0f\x1b\x85\x4f"
        "\x84\x8d\xc3\x27\xc3\x26\xe1\x53\x61\xd3\xf0\xe9\xb0\x59\xd8\x3c\x6c"
        "\x11\xb6\x0c\x5b\x85\xcf\x84\xad\xc3\x67\xc3\x36\x61\xdb\xb0\x5d\xf8"
        "\x5c\xd8\x3e\x7c\x3e\xec\x10\xbe\x10\xa6\x84\x2f\x86\x1d\xc3\x97\xae"
        "\x79\x3c\x35\xec\x13\xf6\x0d\xdf\x0c\xdf\x0c\xbd\x7f\x58\x2d\x88\x2e"
        "\x8c\x66\x46\x3f\x8f\x2e\x8a\x2e\x8e\x66\x45\xbf\x88\x2e\x89\x7e\x19"
        "\xcd\x8e\x2e\x8d\x2e\x8b\x2e\x8f\xae\x88\xae\x8c\xae\x8a\xae\x8e\xae"
        "\x89\xae\x8d\xae\x8b\xae\x8f\x6e\x88\x6e\x8c\x6e\x8a\x6e\x8e\x7a\x5f"
        "\x3b\x8f\x70\xe0\xa4\x53\x4e\xbb\xc0\xc5\xb8\x3c\x2e\xd6\xe5\x75\x71"
        "\xee\x06\x17\xef\x6e\x74\xf9\xdc\x4d\x2e\xe2\x6e\x76\x09\xee\x16\x97"
        "\xdf\xdd\xea\x0a\xb8\x82\xae\x90\x2b\xec\x12\x5d\x11\x57\xd4\x19\x87"
        "\xce\x3a\x72\xa1\x2b\xe6\x8a\xbb\xa8\xbb\xcd\x95\x70\xb7\xbb\x24\x57"
        "\xd2\x95\x72\xa5\x9d\x73\x65\x5c\xb2\x6b\xe9\x5a\xb9\x56\xae\xb5\x7b"
        "\xd6\xb5\x71\x6d\x5d\x3b\xf7\x9c\x7b\xce\x3d\xef\x9e\x77\x2f\xb8\x17"
        "\xdc\x8b\xae\xa3\x7b\xc9\x75\x72\x2f\xbb\xce\xee\x15\xd7\xc5\xbd\xea"
        "\x5e\x75\xaf\xb9\x6e\xae\xbb\xeb\xe1\x5e\x77\x3d\xdd\x1b\xae\x97\xeb"
        "\xed\x52\x5d\xaa\xeb\xeb\xfa\xba\x7e\xae\x9f\x1b\xe0\x06\xb8\x41\x6e"
        "\x90\x1b\xec\x06\xbb\x21\x6e\x88\x4b\x73\x69\x6e\x98\x1b\xe6\x86\xbb"
        "\xe1\x6e\x84\x1b\xe1\x46\xba\x91\x6e\xb4\x1b\xed\xc6\xb8\x31\x6e\x9c"
        "\x1b\xe7\x26\xb8\x09\x2e\xdd\xa5\xbb\x49\x6e\x92\x9b\xec\x26\xbb\x29"
        "\x6e\x8a\x9b\xe6\xa6\xb9\x0c\x97\xe1\x66\xba\x99\x6e\x96\x9b\xe5\xe6"
        "\xb8\x39\x6e\x6e\xd2\x5c\x37\xcf\xcd\x73\x0b\xdc\x02\x97\xe9\x32\xdd"
        "\x22\xb7\xc8\x65\xb9\x2c\xb7\xc4\x2d\x71\xd9\x2e\xdb\x2d\x73\xcb\xdc"
        "\x0a\xb7\xc2\xad\x72\xab\xdc\x1a\xb7\xc6\xad\x73\xeb\xdc\x06\xb7\xc1"
        "\x6d\x72\x9b\xdc\x16\xb7\xc5\x6d\x75\x5b\xdd\x76\xb7\xdd\xed\x74\x3b"
        "\xdd\x6e\xb7\xdb\xed\x71\x7b\xdc\x3e\xb7\xcf\xe5\xb8\x1c\xb7\xdf\xed"
        "\x3f\xe7\xdd\x01\x77\xd0\x7d\xef\x0e\xb9\x1f\xdc\x61\xf7\xa3\x3b\xe2"
        "\x7e\x72\x47\xdd\xcf\xee\x98\xfb\xc5\x1d\x77\x27\xdc\x49\x77\xca\x9d"
        "\x76\xbf\xba\x33\xee\xac\x3b\xe7\xce\xbb\x0b\xee\x37\x77\xd1\x5d\x72"
        "\x97\x9d\x77\xe9\x91\x0f\x23\x93\x22\x1f\x45\x26\x47\x3e\x8e\x4c\x89"
        "\x4c\x8d\x4c\x8b\x4c\x8f\x64\x44\x66\x44\x66\x46\x3e\x89\xcc\x8a\xcc"
        "\x8e\xcc\x89\x7c\x1a\x99\x1b\xf9\x2c\x32\x2f\x32\x3f\xb2\x20\xb2\x30"
        "\x92\x19\xf9\x3c\xb2\x28\xb2\x38\x92\x15\xf9\x22\xb2\x24\xf2\x65\x24"
        "\x3b\xb2\x34\xb2\x2c\xb2\x3c\xb2\x22\xb2\x32\xe2\x7d\x91\xad\xa1\x2f"
        "\xe6\x8b\xfb\xa8\xbf\xcd\x97\xf0\xb7\xfb\x24\x5f\xd2\x97\xf2\xa5\xbd"
        "\xf3\x65\x7c\xb2\xbf\xc3\x97\xf5\x77\xfa\x72\xfe\x2e\x5f\xde\xdf\xed"
        "\x2b\xf8\x7b\x7c\x45\x5f\xc9\x57\xf6\x4f\xfb\x66\xbe\xb9\x6f\xe1\x5b"
        "\xfa\x56\xfe\x19\xdf\xda\x3f\xeb\xdb\xf8\xb6\xbe\x9d\x7f\xce\xb7\xf7"
        "\xcf\xfb\x0e\xfe\x05\x9f\xe2\x5f\xf4\x1d\xfd\x4b\xbe\x93\x7f\xd9\x77"
        "\xf6\xaf\xf8\x2e\xfe\x55\xdf\xd5\xbf\xe6\xbb\xf9\xee\xbe\x87\x7f\xdd"
        "\xf7\xf4\x6f\xf8\x5e\xbe\xb7\x4f\xf5\x7d\x7c\x5f\xff\xa6\xef\xe7\xfb"
        "\xfb\x01\x7e\xa0\x1f\xe4\xdf\xf2\x83\xfd\xdb\x7e\x88\x7f\xc7\xa7\xf9"
        "\xa1\x7e\x98\x7f\xd7\x0f\xf7\xef\xf9\x11\xfe\x7d\x3f\xd2\x8f\xf2\xa3"
        "\xfd\x07\x7e\x8c\x1f\xeb\xc7\xf9\xf1\x7e\x82\x9f\xe8\xd3\xfd\x87\x7e"
        "\x92\xff\xc8\x4f\xf6\x1f\xfb\x29\x7e\xaa\x9f\xe6\xa7\xfb\x0c\x3f\xc3"
        "\xcf\xf4\x9f\xf8\x59\x7e\xb6\x9f\xe3\x3f\xf5\x73\xfd\x67\x7e\x9e\x9f"
        "\xef\x17\xf8\x85\x3e\xd3\x7f\xee\x17\xf9\xc5\x3e\xcb\x7f\xe1\x97\xf8"
        "\x2f\x7d\xb6\x5f\xea\x97\xf9\xe5\x5e\xc4\xae\xf4\xab\xfc\x6a\xbf\xc6"
        "\xaf\xf5\xeb\xfc\x7a\xbf\xc1\x6f\xf4\x9b\xfc\x66\xbf\xc5\x7f\xe5\xb7"
        "\xfa\x6d\x7e\xbb\xdf\xe1\x77\xfa\x5d\x7e\xb7\xff\xda\xef\xf1\x7b\xfd"
        "\x3e\xff\x8d\xcf\xf1\xdf\xfa\xfd\xfe\x4f\xfe\x80\xff\xce\x1f\xf4\xdf"
        "\xfb\x43\xfe\x07\x7f\xd8\xff\xe8\x8f\xf8\x9f\xfc\x51\xff\xb3\x3f\xe6"
        "\x7f\xf1\xc7\xfd\x09\x7f\xd2\x9f\xf2\xa7\xfd\xaf\xfe\x8c\x3f\xeb\xcf"
        "\xf9\xf3\xfe\x82\xff\xcd\x5f\xf4\x97\xfc\x65\xfe\x9b\x35\xc6\x18\x63"
        "\x8c\xb1\xff\x16\x75\x8d\xe3\x7d\xfe\xc1\xf7\xe4\x5f\xd6\x15\x7d\x85"
        "\x10\x37\x6e\x2b\x7c\xe8\xef\x6b\x6e\x28\xf0\xe7\x7d\x7f\x99\xd8\x3e"
        "\x22\x84\x78\xb1\x77\xd7\x27\xfe\xba\x6a\xd4\x48\x4d\x4d\xfd\xcb\x63"
        "\xb3\x95\x08\x8a\xcf\x17\x42\x44\xae\xe6\xc7\x88\xab\xf1\x52\xd1\x4e"
        "\x3c\x2f\x52\x44\x5b\x51\xf6\x1f\xf6\xd7\x5f\x76\xbf\x40\xd7\xa8\x1f"
        "\xbd\x5b\x88\xb8\xff\x92\x13\x2b\xae\xc6\x57\xeb\xdf\xf9\x4f\xea\x8f"
        "\x9d\x7b\xcd\xfa\xf3\x85\x48\x2a\x7e\x35\x27\xaf\xb8\x1a\x5f\xad\x5f"
        "\xee\x9f\xd4\x2f\xd8\xfa\x1a\xf5\xf3\x7e\x97\x2e\x44\x9b\xff\x92\x13"
        "\x2f\xae\xc6\x57\xeb\x27\x8b\x67\xc5\x4b\x22\xe5\x6f\x1e\xc9\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\xfd\x59\x7f\x59\xb9\xf3\xb5\xee\x6f\xaf\xdc"
        "\x9f\x27\xea\xab\x39\x79\xc4\xd5\xf8\x5a\xf7\xe7\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\xbb\xfe\x5e\xe9\xde\xe3\x85\x67\x52\x52\xda\x76\xe6"
        "\x0d\x6f\xfe\xd9\x26\xe6\xff\x8d\x36\x78\xf3\x9f\xdc\x5c\xef\xdf\x4c"
        "\x8c\x31\xc6\x18\x63\x8c\xb1\x7f\xb7\xab\x17\xfd\xd7\xbb\x13\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c"
        "\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6"
        "\x18\x63\x2c\xf7\xfa\x4f\xfc\x3b\xb1\xeb\x7d\x8e\x8c\x31\xc6\x18\x63"
        "\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31"
        "\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\x18"
        "\x63\x8c\x31\xc6\x18\x63\x8c\x31\xc6\xd8\xf5\xf6\xbf\x02\x00\x00\xff"
        "\xff\x6b\xe9\x31\x0e",
        5360));
    NONFAILING(syz_mount_image(
        /*fs=*/0x20000080, /*dir=*/0x20000040, /*flags=*/0x1000000,
        /*opts=*/0x200000c0, /*chdir=*/1, /*size=*/0x14f0, /*img=*/0x20002a40));
    break;
  case 1:
    NONFAILING(memcpy((void*)0x20006ac0, "cpuacct.stat\000", 13));
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20006ac0ul,
                  /*flags=*/0x275aul, /*mode=*/0ul);
    if (res != -1)
      r[0] = res;
    break;
  case 2:
    syscall(__NR_write, /*fd=*/r[0], /*data=*/0x20001500ul, /*len=*/0x10ful);
    break;
  case 3:
    syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x400000ul,
            /*prot=*/0x2000005ul, /*flags=*/0x10012ul, /*fd=*/r[0],
            /*offset=*/0ul);
    break;
  case 4:
    NONFAILING(memcpy((void*)0x20000500, ".\000", 2));
    res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000500ul,
                  /*flags=*/0ul, /*mode=*/0ul);
    if (res != -1)
      r[1] = res;
    break;
  case 5:
    syscall(__NR_getdents64, /*fd=*/r[1], /*ent=*/0x20000080ul,
            /*count=*/0x98ul);
    break;
  case 6:
    NONFAILING(memcpy((void*)0x200000c0, "./file0\000", 8));
    res = syscall(__NR_openat, /*fd=*/0xffffffffffffff9cul,
                  /*file=*/0x200000c0ul, /*flags=*/0ul, /*mode=*/0ul);
    if (res != -1)
      r[2] = res;
    break;
  case 7:
    NONFAILING(memcpy((void*)0x20000180, "./file0\000", 8));
    res = syscall(__NR_openat, /*fd=*/r[2], /*file=*/0x20000180ul,
                  /*flags=*/0ul, /*mode=*/0ul);
    if (res != -1)
      r[3] = res;
    break;
  case 8:
    res = syscall(__NR_io_setup, /*n=*/0x200, /*ctx=*/0x20000200ul);
    if (res != -1)
      NONFAILING(r[4] = *(uint64_t*)0x20000200);
    break;
  case 9:
    NONFAILING(*(uint64_t*)0x20000780 = 0x20000440);
    NONFAILING(*(uint64_t*)0x20000440 = 0);
    NONFAILING(*(uint32_t*)0x20000448 = 0);
    NONFAILING(*(uint32_t*)0x2000044c = 4);
    NONFAILING(*(uint16_t*)0x20000450 = 0);
    NONFAILING(*(uint16_t*)0x20000452 = 0);
    NONFAILING(*(uint32_t*)0x20000454 = r[3]);
    NONFAILING(*(uint64_t*)0x20000458 = 0x200000c0);
    NONFAILING(memset((void*)0x200000c0, 2, 1));
    NONFAILING(*(uint64_t*)0x20000460 = 1);
    NONFAILING(*(uint64_t*)0x20000468 = 0);
    NONFAILING(*(uint64_t*)0x20000470 = 0);
    NONFAILING(*(uint32_t*)0x20000478 = 0);
    NONFAILING(*(uint32_t*)0x2000047c = -1);
    syscall(__NR_io_submit, /*ctx=*/r[4], /*nr=*/7ul, /*iocbpp=*/0x20000780ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/7ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=*/0x32ul, /*fd=*/-1, /*offset=*/0ul);
  install_segv_handler();
  for (procid = 0; procid < 6; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}