// https://syzkaller.appspot.com/bug?id=570b548f1cf8f3040dda661bfea17c318d79ab88
// 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 <netinet/in.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/prctl.h>
#include <sys/resource.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/time.h>
#include <sys/types.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/in6.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/nl80211.h>
#include <linux/rfkill.h>
#include <linux/rtnetlink.h>
#include <linux/veth.h>

#ifndef __NR_bpf
#define __NR_bpf 321
#endif

static unsigned long long procid;

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);
}

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

typedef struct {
  int state;
} event_t;

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

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

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

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

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

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

static bool write_file(const char* file, const char* what, ...)
{
  char buf[1024];
  va_list args;
  va_start(args, what);
  vsnprintf(buf, sizeof(buf), what, args);
  va_end(args);
  buf[sizeof(buf) - 1] = 0;
  int len = strlen(buf);
  int fd = open(file, O_WRONLY | O_CLOEXEC);
  if (fd == -1)
    return false;
  if (write(fd, buf, len) != len) {
    int err = errno;
    close(fd);
    errno = err;
    return false;
  }
  close(fd);
  return true;
}

struct nlmsg {
  char* pos;
  int nesting;
  struct nlattr* nested[8];
  char buf[4096];
};

static void netlink_init(struct nlmsg* nlmsg, int typ, int flags,
                         const void* data, int size)
{
  memset(nlmsg, 0, sizeof(*nlmsg));
  struct nlmsghdr* hdr = (struct nlmsghdr*)nlmsg->buf;
  hdr->nlmsg_type = typ;
  hdr->nlmsg_flags = NLM_F_REQUEST | NLM_F_ACK | flags;
  memcpy(hdr + 1, data, size);
  nlmsg->pos = (char*)(hdr + 1) + NLMSG_ALIGN(size);
}

static void netlink_attr(struct nlmsg* nlmsg, int typ, const void* data,
                         int size)
{
  struct nlattr* attr = (struct nlattr*)nlmsg->pos;
  attr->nla_len = sizeof(*attr) + size;
  attr->nla_type = typ;
  if (size > 0)
    memcpy(attr + 1, data, size);
  nlmsg->pos += NLMSG_ALIGN(attr->nla_len);
}

static 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 struct nlmsg nlmsg;

#define WIFI_INITIAL_DEVICE_COUNT 2
#define WIFI_MAC_BASE                                                          \
  {                                                                            \
    0x08, 0x02, 0x11, 0x00, 0x00, 0x00                                         \
  }
#define WIFI_IBSS_BSSID                                                        \
  {                                                                            \
    0x50, 0x50, 0x50, 0x50, 0x50, 0x50                                         \
  }
#define WIFI_IBSS_SSID                                                         \
  {                                                                            \
    0x10, 0x10, 0x10, 0x10, 0x10, 0x10                                         \
  }
#define WIFI_DEFAULT_FREQUENCY 2412
#define WIFI_DEFAULT_SIGNAL 0
#define WIFI_DEFAULT_RX_RATE 1
#define HWSIM_CMD_REGISTER 1
#define HWSIM_CMD_FRAME 2
#define HWSIM_CMD_NEW_RADIO 4
#define HWSIM_ATTR_SUPPORT_P2P_DEVICE 14
#define HWSIM_ATTR_PERM_ADDR 22

#define IF_OPER_UP 6
struct join_ibss_props {
  int wiphy_freq;
  bool wiphy_freq_fixed;
  uint8_t* mac;
  uint8_t* ssid;
  int ssid_len;
};

static int set_interface_state(const char* interface_name, int on)
{
  struct ifreq ifr;
  int sock = socket(AF_INET, SOCK_DGRAM, 0);
  if (sock < 0) {
    return -1;
  }
  memset(&ifr, 0, sizeof(ifr));
  strcpy(ifr.ifr_name, interface_name);
  int ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
  if (ret < 0) {
    close(sock);
    return -1;
  }
  if (on)
    ifr.ifr_flags |= IFF_UP;
  else
    ifr.ifr_flags &= ~IFF_UP;
  ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
  close(sock);
  if (ret < 0) {
    return -1;
  }
  return 0;
}

static int nl80211_set_interface(struct nlmsg* nlmsg, int sock,
                                 int nl80211_family, uint32_t ifindex,
                                 uint32_t iftype, bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = NL80211_CMD_SET_INTERFACE;
  netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
  netlink_attr(nlmsg, NL80211_ATTR_IFTYPE, &iftype, sizeof(iftype));
  int err = netlink_send_ext(nlmsg, sock, 0, NULL, dofail);
  if (err < 0) {
  }
  return err;
}

static int nl80211_join_ibss(struct nlmsg* nlmsg, int sock, int nl80211_family,
                             uint32_t ifindex, struct join_ibss_props* props,
                             bool dofail)
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = NL80211_CMD_JOIN_IBSS;
  netlink_init(nlmsg, nl80211_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, NL80211_ATTR_IFINDEX, &ifindex, sizeof(ifindex));
  netlink_attr(nlmsg, NL80211_ATTR_SSID, props->ssid, props->ssid_len);
  netlink_attr(nlmsg, NL80211_ATTR_WIPHY_FREQ, &(props->wiphy_freq),
               sizeof(props->wiphy_freq));
  if (props->mac)
    netlink_attr(nlmsg, NL80211_ATTR_MAC, props->mac, ETH_ALEN);
  if (props->wiphy_freq_fixed)
    netlink_attr(nlmsg, NL80211_ATTR_FREQ_FIXED, NULL, 0);
  int err = netlink_send_ext(nlmsg, sock, 0, NULL, dofail);
  if (err < 0) {
  }
  return err;
}

static int get_ifla_operstate(struct nlmsg* nlmsg, int ifindex, bool dofail)
{
  struct ifinfomsg info;
  memset(&info, 0, sizeof(info));
  info.ifi_family = AF_UNSPEC;
  info.ifi_index = ifindex;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE);
  if (sock == -1) {
    return -1;
  }
  netlink_init(nlmsg, RTM_GETLINK, 0, &info, sizeof(info));
  int n;
  int err = netlink_send_ext(nlmsg, sock, RTM_NEWLINK, &n, dofail);
  close(sock);
  if (err) {
    return -1;
  }
  struct rtattr* attr = IFLA_RTA(NLMSG_DATA(nlmsg->buf));
  for (; RTA_OK(attr, n); attr = RTA_NEXT(attr, n)) {
    if (attr->rta_type == IFLA_OPERSTATE)
      return *((int32_t*)RTA_DATA(attr));
  }
  return -1;
}

static int await_ifla_operstate(struct nlmsg* nlmsg, char* interface,
                                int operstate, bool dofail)
{
  int ifindex = if_nametoindex(interface);
  while (true) {
    usleep(1000);
    int ret = get_ifla_operstate(nlmsg, ifindex, dofail);
    if (ret < 0)
      return ret;
    if (ret == operstate)
      return 0;
  }
  return 0;
}

static int nl80211_setup_ibss_interface(struct nlmsg* nlmsg, int sock,
                                        int nl80211_family_id, char* interface,
                                        struct join_ibss_props* ibss_props,
                                        bool dofail)
{
  int ifindex = if_nametoindex(interface);
  if (ifindex == 0) {
    return -1;
  }
  int ret = nl80211_set_interface(nlmsg, sock, nl80211_family_id, ifindex,
                                  NL80211_IFTYPE_ADHOC, dofail);
  if (ret < 0) {
    return -1;
  }
  ret = set_interface_state(interface, 1);
  if (ret < 0) {
    return -1;
  }
  ret = nl80211_join_ibss(nlmsg, sock, nl80211_family_id, ifindex, ibss_props,
                          dofail);
  if (ret < 0) {
    return -1;
  }
  return 0;
}

static int hwsim80211_create_device(struct nlmsg* nlmsg, int sock,
                                    int hwsim_family,
                                    uint8_t mac_addr[ETH_ALEN])
{
  struct genlmsghdr genlhdr;
  memset(&genlhdr, 0, sizeof(genlhdr));
  genlhdr.cmd = HWSIM_CMD_NEW_RADIO;
  netlink_init(nlmsg, hwsim_family, 0, &genlhdr, sizeof(genlhdr));
  netlink_attr(nlmsg, HWSIM_ATTR_SUPPORT_P2P_DEVICE, NULL, 0);
  netlink_attr(nlmsg, HWSIM_ATTR_PERM_ADDR, mac_addr, ETH_ALEN);
  int err = netlink_send(nlmsg, sock);
  if (err < 0) {
  }
  return err;
}

static void initialize_wifi_devices(void)
{
  int rfkill = open("/dev/rfkill", O_RDWR);
  if (rfkill == -1)
    exit(1);
  struct rfkill_event event = {0};
  event.type = RFKILL_TYPE_ALL;
  event.op = RFKILL_OP_CHANGE_ALL;
  if (write(rfkill, &event, sizeof(event)) != (ssize_t)(sizeof(event)))
    exit(1);
  close(rfkill);
  uint8_t mac_addr[6] = WIFI_MAC_BASE;
  int sock = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
  if (sock < 0)
    exit(1);
  int hwsim_family_id =
      netlink_query_family_id(&nlmsg, sock, "MAC80211_HWSIM", true);
  int nl80211_family_id =
      netlink_query_family_id(&nlmsg, sock, "nl80211", true);
  if (hwsim_family_id < 0 || nl80211_family_id < 0)
    exit(1);
  uint8_t ssid[] = WIFI_IBSS_SSID;
  uint8_t bssid[] = WIFI_IBSS_BSSID;
  struct join_ibss_props ibss_props = {.wiphy_freq = WIFI_DEFAULT_FREQUENCY,
                                       .wiphy_freq_fixed = true,
                                       .mac = bssid,
                                       .ssid = ssid,
                                       .ssid_len = sizeof(ssid)};
  for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) {
    mac_addr[5] = device_id;
    int ret = hwsim80211_create_device(&nlmsg, sock, hwsim_family_id, mac_addr);
    if (ret < 0)
      exit(1);
    char interface[6] = "wlan0";
    interface[4] += device_id;
    if (nl80211_setup_ibss_interface(&nlmsg, sock, nl80211_family_id, interface,
                                     &ibss_props, true) < 0)
      exit(1);
  }
  for (int device_id = 0; device_id < WIFI_INITIAL_DEVICE_COUNT; device_id++) {
    char interface[6] = "wlan0";
    interface[4] += device_id;
    int ret = await_ifla_operstate(&nlmsg, interface, IF_OPER_UP, true);
    if (ret < 0)
      exit(1);
  }
  close(sock);
}

#define MAX_FDS 30

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

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();
  if (unshare(CLONE_NEWNET)) {
  }
  write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535");
  initialize_wifi_devices();
  sandbox_common_mount_tmpfs();
  setup_binderfs();
  loop();
  exit(1);
}

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

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

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

static void setup_sysctl()
{
  int cad_pid = fork();
  if (cad_pid < 0)
    exit(1);
  if (cad_pid == 0) {
    for (;;)
      sleep(100);
  }
  char tmppid[32];
  snprintf(tmppid, sizeof(tmppid), "%d", cad_pid);
  struct {
    const char* name;
    const char* data;
  } files[] = {
      {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"},
      {"/proc/sys/kernel/hung_task_check_interval_secs", "20"},
      {"/proc/sys/net/core/bpf_jit_kallsyms", "1"},
      {"/proc/sys/net/core/bpf_jit_harden", "0"},
      {"/proc/sys/kernel/kptr_restrict", "0"},
      {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"},
      {"/proc/sys/fs/mount-max", "100"},
      {"/proc/sys/vm/oom_dump_tasks", "0"},
      {"/proc/sys/debug/exception-trace", "0"},
      {"/proc/sys/kernel/printk", "7 4 1 3"},
      {"/proc/sys/kernel/keys/gc_delay", "1"},
      {"/proc/sys/vm/oom_kill_allocating_task", "1"},
      {"/proc/sys/kernel/ctrl-alt-del", "0"},
      {"/proc/sys/kernel/cad_pid", tmppid},
  };
  for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) {
    if (!write_file(files[i].name, files[i].data)) {
    }
  }
  kill(cad_pid, SIGKILL);
  while (waitpid(cad_pid, NULL, 0) != cad_pid)
    ;
}

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

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

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

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 5; 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);
      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++) {
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      setup_test();
      execute_one();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
  }
}

uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    res = syscall(__NR_socket, /*domain=*/0x11ul, /*type=SOCK_DGRAM*/ 2ul,
                  /*proto=*/0x300);
    if (res != -1)
      r[0] = res;
    break;
  case 1:
    *(uint64_t*)0x20000480 = 0;
    *(uint32_t*)0x20000488 = 0;
    *(uint64_t*)0x20000490 = 0;
    *(uint64_t*)0x20000498 = 0;
    *(uint64_t*)0x200004a0 = 0x200003c0;
    *(uint64_t*)0x200004a8 = 0x17;
    *(uint32_t*)0x200004b0 = 0;
    *(uint32_t*)0x200004b8 = 0;
    syscall(__NR_recvmmsg, /*fd=*/r[0], /*mmsg=*/0x20000480ul,
            /*vlen=*/0x400000000000179ul, /*f=*/0ul, /*timeout=*/0ul);
    break;
  case 2:
    *(uint32_t*)0x20000200 = 0xc;
    *(uint32_t*)0x20000204 = 0xe;
    *(uint64_t*)0x20000208 = 0x20000f80;
    memcpy(
        (void*)0x20000f80,
        "\xb7\x02\x00\x00\x0b\x00\x00\x00\xbf\xa3\x00\x00\x00\x00\x00\x00\x07"
        "\x03\x00\x00\x00\xfe\xff\xff\x7a\x0a\xf0\xff\x01\x00\x00\x00\x79\xa4"
        "\xf0\xff\x00\x00\x00\x00\xb7\x06\x00\x00\xff\xff\xff\xff\x2d\x64\x05"
        "\x00\x00\x00\x00\x00\x65\x04\x04\x00\x01\x00\x00\x00\x04\x04\x00\x00"
        "\x01\x00\x7d\x60\xb7\x03\x00\x00\x00\x00\x00\x00\x6a\x0a\x00\xfe\x00"
        "\x00\x00\x00\x85\x00\x00\x00\x0d\x00\x00\x00\xb7\x00\x00\x00\x00\x00"
        "\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x5e\xce\xfa\xb8\xf2\xe8\x5c"
        "\x6c\x1c\xa7\x11\xfc\xd0\xcd\xfa\x14\x6e\xc5\x61\x75\x03\x79\x58\x5e"
        "\x5a\x07\x6d\x83\x92\x40\xd2\x9c\x03\x40\x55\xb6\x7d\xaf\xe6\xc8\xdc"
        "\x3d\x5d\x0f\x65\xac\xc0\xd0\x6d\x1a\x14\x34\xe4\xd5\xb3\x18\x5f\xec"
        "\x0e\x07\x00\x4e\x60\xc0\x8d\xc8\xb8\xdb\xf1\x1e\x6e\x94\xd7\x59\x38"
        "\x32\x1a\x3a\xa5\x02\xcd\x24\x24\xa6\x6e\x6d\x2e\xf8\x31\xab\x7e\xa0"
        "\xc3\x4f\x17\xe3\x94\x6e\xf3\xbb\x62\x2e\x03\xb5\x38\xdf\xd8\xe0\x12"
        "\xe7\x95\x78\xe5\x1b\xc5\x30\x99\xe9\x0f\x7a\x80\xd7\x60\x55\x1b\x5b"
        "\x34\x1a\x29\xf3\x1e\x31\x06\xd1\xdd\xd6\x15\x2f\x7c\xbd\xb9\xcd\x38"
        "\xbd\xb2\x20\x9c\x67\xde\xca\x8e\xeb\x9c\x15\xab\x03\x00\x81\x7a\xc6"
        "\x1e\x4d\xd1\x11\x83\xa1\x34\x77\xbf\x7e\x86\x0e\x36\x70\xef\x0e\x78"
        "\x9f\x65\xf1\x32\x8d\x67\x04\x90\x2c\xbe\x7b\xc0\x4b\x82\xd2\x78\x9c"
        "\xb1\x32\xb8\x66\x7c\x21\x47\x66\x1d\xf2\x8d\x99\x61\xb6\x3e\x1a\x9c"
        "\xf6\xc2\xa6\x60\xa1\xfe\x3c\x18\x4b\x75\x1c\x51\x16\x0f\xb2\x0b\x1c"
        "\x69\x02\x20\xb8\x7b\x20\x58\x1e\x7b\xe6\xba\x0d\xc0\x01\xe8\xc7\x6b"
        "\xbe\x7f\xf9\x88\xa2\x8b\xa5\x32\xe6\xea\x09\xc3\x46\xdf\xeb\xd3\x86"
        "\x08\xb3\x28\x00\x80\x00\x5d\x9a\x95\x00\x00\x00\x00\x00\x00\x00\x33"
        "\x4d\x83\x23\x9d\xd2\x70\x80\x85\x1d\xca\xc3\xc1\x22\x33\xf9\xa1\xfb"
        "\x9c\x2a\xec\x61\xce\x63\xa3\x8d\x2f\xd5\x01\x17\xb8\x9a\x9a\xb3\x59"
        "\xb4\xee\xa0\xc6\xe9\x57\x67\xd4\x2b\x4e\x54\x86\x1d\x02\x27\xdb\xfd"
        "\x2e\x6d\x7f\x71\x5a\x7f\x3d\xea\xdd\x71\x30\x89\x85\x6f\x75\x70\x36"
        "\x30\x37\x67\xd2\xe2\x4f\x29\xe5\xda\xd9\x79\x6e\xdb\x69\x7a\x8a\xd0"
        "\x04\xee\xa0\x18\x2b\xab\xd1\x8c\xac\x1b\xd4\xf4\x39\x0a\xf9\xa9\xce"
        "\xaf\xd0\x00\x2c\xab\x15\x4a\xd0\x29\xa1\x09\x00\x00\x00\x27\x80\x87"
        "\x00\x14\xf5\x1c\x3c\x97\x5d\x5a\xec\x84\x22\x2f\xd3\xa0\xec\x4b\xe3"
        "\xe5\x63\x11\x2f\x0b\x39\x50\x1a\xaf\xe2\x34\x87\x00\x72\x85\x8d\xc0"
        "\x6e\x7c\x33\x76\x42\xd3\xe5\xa8\x15\x23\x2f\x5e\x16\xc1\xb3\x0c\x3a"
        "\x6a\x71\xbc\x85\x01\x8e\x5f\xf2\x2d\xc5\x18\xaf\xc9\xff\xc2\xcc\x78"
        "\x8b\xee\x1b\x47\x68\x3d\xb0\x1a\x2f\x93\x98\x68\x52\x11\xdf\xbb\xae"
        "\x3e\x2e\xd0\xa5\x0e\x73\x13\xbf\xf5\xd4\xc3\x91\xdd\xec\xe0\x0f\xc7"
        "\x72\xdd\x6b\x4d\x4d\xe2\xa4\x19\x90\xf0\x5c\xa3\xbd\xfc\x92\xc8\x8c"
        "\x5b\x8d\xcd\x36\xe7\x48\x7a\xfa\x40\x7e\x2e\xdf\xae\x4f\x39\x0a\x83"
        "\x37\x84\x1c\xef\x38\x6e\x22\xcc\x22\xee\x17\x47\x6d\x73\x89\x52\x22"
        "\x96\x82\xe2\x4b\x92\x53\x3a\xc2\xa9\xf5\xa6\x99\x59\x3f\x08\x44\x19"
        "\xca\xe0\xb4\x52\x2b\xcc\x97\xd3\xae\x52\x6a\xca\x54\x18\x3f\xb0\x1c"
        "\x73\xf9\x79\xca\x98\x57\x39\x95\x37\xf5\x83\x18\x08\xb0\xdc\x2a\x2d"
        "\x0e\x00\x00\x00\x00\x00\x00\x05\x78\x67\x3f\x8b\x6e\x74\xce\x23\x87"
        "\x7a\x6b\x9f\xbe\xf2\x46\x1c\x96\xa0\x88\xa2\x2e\x8b\x15\xc3\xe2\x33"
        "\xdb\x00\x00\x2e\x30\xd4\x6a\x9d\x24\xd3\x7c\xef\x09\x9e\xce\x72\x9a"
        "\xa2\x18\xf9\xf4\x4a\x32\x10\x22\x3f\xda\xe7\xed\x04\x93\x5c\x3c\x90"
        "\xd3\xad\xd8\xee\xbc\x86\x19\xd7\x34\x15\xcd\xa2\x13\x0f\x50\x11\xe4"
        "\x84\x55\x35\xa8\xb9\x0d\xfa\xe1\x58\xb9\x4f\x50\xad\xab\x98\x8d\xd8"
        "\xe1\x2b\xaf\x5c\xc9\x39\x8f\xff\x00\x40\x4d\x5d\x99\xf8\x2e\x20\xee"
        "\x6a\x8c\x88\xe1\x8c\x29\x77\xaa\xb3\x7d\x9a\xc4\xcf\xc1\xc7\xb4\x00"
        "\x00\x00\x00\x00\x00\x07\xff\x57\xc3\x94\x95\xc8\x26\xb9\x56\xba\x85"
        "\x9a\xc8\xe3\xc1\x77\xb9\x1b\xd7\xd5\xe4\x1f\xf8\x68\xf7\xca\x16\x64"
        "\xfe\x2f\x3c\xed\x84\x68\x91\x18\x06\x04\xb6\xdd\x24\x99\xd1\x6d\x7d"
        "\x91\x58\xff\xff\xff\xff\x00\x00\x00\x00\xef\x06\x9d\xc4\x27\x49\xa8"
        "\x9f\x85\x47\x97\xf2\x9d\x00\x00\x00\x2d\x8c\x38\xa9\x67\xc1\xbb\xe0"
        "\x93\x15\xc2\x98\x77\xa3\x08\xbc\xc8\x7d\xc3\xad\xdb\x08\x14\x1b\xde"
        "\xe5\xd2\x78\x74\xb2\xf6\x63\xdd\xee\xf0\x00\x5b\x3d\x96\xc7\xaa\xbf"
        "\xd5\x02\x00\xa9\x08\x00\xc6\x6e\xe2\xb1\xad\x76\xdf\xf9\xf9\x00\x3f"
        "\x07\x00\x00\x99\xd4\x89\x4e\xe7\xf8\x24\x9d\xc1\xe3\x42\x8d\x21\x29"
        "\x36\x9e\xe1\xb8\x5a\xf6\xeb\x2e\xea\x0d\x0d\xf4\x14\xb3\x15\xf6\x51"
        "\xc8\x41\x23\x92\x19\x1f\xa8\x3e\xe8\x30\x54\x8f\x11\xe1\x03\x6a\x8d"
        "\xeb\xd6\x4c\xbe\x35\x94\x54\xa3\xf2\x23\x9c\xfe\x35\xf8\x1b\x7a\x49"
        "\x0f\x16\x7e\x6d\x5c\x11\x09\x00\x00\x00\x00\x00\x00\x00\x00\x42\xb8"
        "\xff\x8c\x21\xad\x70\x2c\xca\xca\xd5\xb3\x9e\xef\x21\x3d\x1c\xa2\x96"
        "\xd2\xa2\x77\x98\xc8\xce\x2a\x30\x5c\x0c\x7d\x35\xcf\x4b\x22\x54\x9a"
        "\x4b\xd9\x20\x52\x18\x8b\xd1\xf2\x85\xf6\x53\xb6\x21\x49\x1d\xc6\xaa"
        "\xee\x02\x00\xe2\xff\x08\x64\x4f\xb9\x4c\x06\x00\x6e\xff\x1b\xe2\xf6"
        "\x33\xc1\xd9\x87\x59\x5e\xc3\xdb\x58\xa7\xbb\x30\x42\xec\x3f\x77\x1f"
        "\x7a\x13\x38\xa5\xc3\xdd\x35\xe9\x26\x04\x9f\xe8\x6e\x09\xc5\x8e\x27"
        "\x3c\xd9\x05\xde\xb2\x8c\x13\xc1\xed\x1c\x0d\x9c\xae\x84\x6b\xcb\xfa"
        "\x8c\xce\x7b\x89\x3e\x57\x8a\xf7\xdc\x7d\x5e\x87\xd4\x4f\xf8\x28\xde"
        "\x45\x3f\x34\xc2\xb1\x86\x60\xb0\x80\xef\xc7\x07\xe6\x76\xe1\xfb\x4d"
        "\x58\x25\xc0\xca\x17\x7a\x4c\x7f\xbb\x4e\xda\x05\x45\xc0\x0f\x57\x6b"
        "\x2b\x5c\xc7\xf8\x19\xab\xd0\xf8\x85\xcc\x48\x06\xf4\x03\x00\x96\x6f"
        "\xcf\x1e\x54\xf5\xa2\xd3\x87\x08\x29\x4c\xd6\xf4\x96\xe5\xde\xe7\x34"
        "\xfe\x7d\xa3\x77\x08\x45\xcf\x44\x2d\x48\x8a\xfd\x80\xe1\x70\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x52\x05\x00\x00\x00\xdc\x1c\x56\xd5\x9f"
        "\x35\xd3\x67\x63\x29\x52\xa9\x34\x66\xae\x59\x5c\x6a\x8c\xda\x69\x0d"
        "\x19\x2a\x07\x08\x86\xdf\x42\xb2\x70\x98\x77\x3b\x45\x19\x8b\x4a\x34"
        "\xac\x97\x7e\xbd\x13\x89\xa0\x96\x3d\xe8\x5d\xd2\xb1\x89\x77\x44\x50"
        "\xe1\x21\xd0\x13\x42\x70\x3f\x5b\xf0\x30\xe9\x35\x87\x8a\x6d\x16\x9c"
        "\x80\xaa\x42\x52\xd4\xea\x6b\x8f\x62\x16\xff\x20\x2b\x5b\x5a\x18\x2c"
        "\xb5\xe8\x38\xb3\x07\x63\x2d\x03\xa7\xca\x6f\x6d\x03\x39\xf9\x95\x3c"
        "\x30\x93\xc3\x69\x0d\x10\xec\xb6\x5d\xc5\xb4\x74\x81\xed\xbf\x1f\x00"
        "\x00\x00\x00\x00\x00\x00\x4d\x16\xd2\x9c\x28\xeb\x51\x67\xe9\x93\x6e"
        "\xd3\x27\xfb\x23\x7a\x56\x22\x4e\x49\xd9\xea\x95\x5a\x5f\x0d\xec\x1b"
        "\x3c\xcd\x35\x36\x46\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\x26\xde\xd4\xdd\x6f\xe1\x51\x8c\xc7\x80\x20\x43\xec\xfe\x69\xf7"
        "\x43\xf1\x21\x3b\xf8\x17\x9e\xcd\x9e\x5a\x22\x5d\x67\x52\x1d\xc7\x28"
        "\xea\xc7\xd8\x0a\x56\x56\xac\x2c\xbd\xe2\x1d\x3e\xbf\xbf\x69\xff\x86"
        "\x1f\x43\x94\x83\x6d\xdf\x12\x8d\x6d\x19\x07\x9e\x64\x33\x6e\x7c\x67"
        "\x65\x05\xc7\x8a\xd6\x75\x48\xf4\xb1\x92\xbe\x18\x27\xfc\xd9\x5c\xf1"
        "\x07\x75\x3c\xb0\xa6\xa9\x79\xd3\xdb\x08\x40\x70\x81\xc6\x28\x1e\x2d"
        "\x84\x29\xa8\x63\x90\x34\xa7\x5f\x4c\x7d\xf3\xea\x8f\xc2\x01\x8d\x07"
        "\xaf\x14\x91\xef\x06\xb4\x09\x21\x40\xfa\xed\x0c\x32\x9b\xe6\x10\xc3"
        "\x08\x2d\x43\xe1\x21\x86\x1b\x5c\xc0\x3f\x1a\x15\x61\xf0\x58\x9e\x0d"
        "\x12\x96\x9b\xc9\x82\xff\x5d\x8e\x9b\x98\x6c\x0c\x6c\x74\x7d\x9a\x1c"
        "\xc5\x00\xbb\x89\x2c\x3a\x16\xff\x10\xfe\xea\x20\xbd\xac\x00\x00\x00"
        "\x00\x00\x00\x00\x00\xca\x06\xf2\x56\xc8\x02\x8e\x0f\x9b\x4c\x87\x87"
        "\x36\x1f\x32\x6d\xf8\x6a\x68\x26\xc6\x9f\xa3\x5b\xa5\xcb\xc3\xf2\xdb"
        "\x15\x16\xff\xc5\xc6\xe3\xfa\x61\x8b\x24\xa6\xce\x16\xd6\xc7\x01\x0b"
        "\xb3\x7b\x61\xfa\x0a\x2d\x89\x74\xe6\x91\x15\xd3\x33\x94\xe8\x6e\x4b"
        "\x83\x82\x97\xba\x20\xf9\x69\x36\xb7\xe4\x74\x6e\x92\xde\xa6\xc5\xd1"
        "\xd3\x3d\x84\xd9\x6b\x50\xfb\x00\x00\x00\xae\x07\xc6\x5b\x71\x08\x8d"
        "\xd7\xd5\xd1\xe1\xba\xb9\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00\xb5\xac\xe2\x93\xbe\xc8\x33\xc1\x3e\x32\x29\x43\x2a\xd7\x1d\x64"
        "\x62\x18\xb5\x22\x9d\xd8\x81\x37\xfc\x7c\x59\xaa\x24\x2a\xf3\xbb\x4e"
        "\xfb\x82\x05\x5a\x3b\x61\x22\x7a\xd4\x0f\x52\xc9\xf2\x50\x05\x79\xac"
        "\xa1\x10\x33\xbb\x9c\xc1\x6b\xd8\x3a\x00\x84\x0e\x31\xd8\x28\xec\x78"
        "\xe1\x16\xae\x46\xc4\x89\x7e\x27\x95\xb6\xff\x92\xe9\xa1\xe2\x4b\x0b"
        "\x85\x5c\x02\xf2\xb7\xad\xd5\x8f\xfb\x25\xf3\x39\x29\x77\x29\xa7\xa5"
        "\x18\x10\x13\x4d\x3d\xfb\xf7\x1f\x65\x16\x73\x7b\xe5\x5c\x06\xd9\xcd"
        "\xcf\xb1\xe2\xbb\x10\xb5\x00\x00\xeb\x4a\xcf\xf9\x07\x56\xdb\xa1\xec"
        "\xf9\xf5\x8a\xfd\x3c\x39\xb5\xc4\x55\x8b\xa9\xaf\x6b\x73\x33\xc8\x94"
        "\xa1\xfb\x29\xad\xe9\xad\x75\xc9\xc0\x22\xe8\xd0\x3f\xe2\x8b\xc3\x58"
        "\x68\x44\x92\xaa\x77\x1d\xbf\xe8\x07\x45\xfe\x89\xad\x34\x9f\xfa\xad"
        "\x76\xff\x9d\xd6\x43\x79\x6c\xaf\xfd\xf6\x7a\xf5\xdd\x47\x6c\x37\xe7"
        "\xe9\xa8\x4e\x2e\x5d\xa2\x69\x6e\x28\x5a\x59\xb5\x3f\x2f\xb0\xe1\x6d"
        "\x82\x62\xc0\x80\xc1\x59\xce\x1d\x9b\xc7\xef\x3e\x3f\x40\xc1\x40\x89"
        "\xc8\x27\x59\x10\x6f\x42\x25\x82\xb4\x2e\x3e\x84\x84\xea\x5a\x6a\xd9"
        "\xaa\x52\x52\x35\xda\x00\x00\xaf\xe0\xe0\xca\xea\x1a\xd4\xcb\x23\xf3"
        "\xc2\xb8\xa0\xf4\x55\xba\x69\xea\x28\x4c\x26\x8d\x54\xb4\x31\x58\xa8"
        "\xb1\xd1\x28\xd0\x2a\xf2\x63\xb3\xdc\x1c\xab\x79\x4c\x9a\xc5\x7a\x2a"
        "\x73\x32\xf4\xd8\x76\x4c\x30\x2c\xcd\x5a\xac\x11\x44\x82\xb6\x19\xfc"
        "\x57\x5a\xa0\xdd\x27\x77\xe8\x81\xe2\x9a\x85\x43\x80\xe2\xf1\xe4\x9d"
        "\xb5\xa1\x51\x7e\xc4\x0b\xb3\xfa\x44\xf9\x95\x9b\xad\x67\xcc\xab\xa7"
        "\x64\x08\xda\x35\xc9\xf1\x53\x4c\x8b\xd4\x8b\xbd\x61\x62\x7a\x2e\x0a"
        "\x74\xb5\xe6\xae\xfb\x7e\xee\x40\x35\x02\x73\x41\x37\xff\x47\x25\x7f"
        "\x16\x43\x91\xc6\x73\xb6\x07\x9e\x65\xd7\x29\x5e\xed\x16\x4c\xa6\x3e"
        "\x4e\xa2\x6d\xce\x0f\xb3\xce\x0f\x65\x91\xd8\x0d\xfb\x8f\x38\x6b\xb7"
        "\x4b\x55\x89\x82\x9b\x6b\x06\x79\xb5\xd6\xfc\xcb\xec\xfa\xe5\x55\x3d"
        "\x99\x50\xd4\x8c\x77\x4e\xaa\x35\xb2\x4f\xce\x69\xa2\x0d\x8b\xc4\x10"
        "\xd9\xf4\x8b\xf7\xea\xc9\x05\x29\xcd\x6a\xf0\x61\xc9\xe5\x3a\xdd\xdd"
        "\xc6\x20\xce\x73\xc5\xd1\x77\xe3\xd0\x97\x15\x9f\x27\x68\x63\x6f\xc1"
        "\x02\x76\xc6\xa0\xad\xc5\x74\x83\xb3\xf7\x08\x3f\x66\xb8\x7e\xf2\x96"
        "\xee\x85\xe9\xbb\x70\xa3\x00\x9a\x5d\x30\xf4\x79\xe2\x93\xa3\x30\x2e"
        "\x11\x35\x0e\xa8\x57\xb3\x7e\x76\xca\x2f\x50\x37\x8e\x40\x92\xce\x2c"
        "\x57\x4a\xd2\x78\xb9\xb7\xb7\x17\xc5\x71\xaf\xb2\x07\x7b\x01\x9f\xd9"
        "\xd8\x9e\xfd\x59\xb4\x1f\x05\x1e\xc5\xa8\xff\x87\xec\xc8\xdf\x91\x7a"
        "\x1e\x38\x6d\x84\x9f\xcd\x10\xe2\xf9\xca\x52\xe0\x23\x39\xc2\xf4\x66"
        "\x6b\x0c\x54\x5e\x25\xf1\xcd\x62\x42\x1c\x28\xd2\x59\x94\xbe\x0c\xff"
        "\x72\x71\xa0\xde\xe3\x8d\x7a\xc4\xac\x73\x6b\x09\x0e\x1d\x29\xf9\x81"
        "\x17\x91\x86\xe4\x00\x00\x00\x00\x00\x00\x64\x61\x74\xb5\x5d\x25\x1f"
        "\x7f\x8c\xa5\xcc\xc3\x2a\x5e\xfb\x33\xb2\x37\xef\xf5\x59\x7a\x3c\x3a"
        "\x5f\x3a\x9b\xb5\x4a\xbb\x40\xe5\x45\x93\xe1\xa7\xce\x4c\xfa\x17\xb3"
        "\xc3\xfe\x91\xc0\x63\x63\x49\x63\x41\xea\xe2\x0d\xcc\x59\xb6\x17\x9b"
        "\x32\xdd\xdd\xef\x5c\x34\x00\x00\x96\xa5\x4c\x0c\x57\x1a\x91\x87\x8f"
        "\x61\xf7\x49\x12\xe2\x29\x9e\x55\x01\xd4\xd6\x94\x3b\xfd\x74\xc8\x56"
        "\x51\x17\x26\xf0\xac\x8f\x7d\x17\xf1\xc6\xb4\x45\x1c\x1b\xcd\xc6\xb6"
        "\xe1\x70\x0e\x4c\xd8\x77\x09\xd9\x7a\xfc\x54\x23\xc9\x6f\xa9\x81\x87"
        "\x3d\x43\x69\xb0\x4b\xbf\x1f\xb9\xf6\x8f\x17\x99\x15\x40\x86\x8e\x40"
        "\x82\x01\xad\x1a\x74\x17\x9e\x48\x9a\xa6\x1f\x02\x1a\x43\x7a\x3f\xa9"
        "\x35\x58\x8b\xe2\x06\x8f\x7f\xf9\xb2\x53\x10\x63\x26\xfd\xe7\x95\xe5"
        "\x30\xb9\x36\x26\xcc\x68\xe0\x6e\x60\x21\x98\x72\x42\x49\xb4\x44\x5e"
        "\xef\x08\x40\x1c\xd1\xa3\xe2\x66\xdb\x41\x47\x4e\x69\x90\x2e\x4d\x8f"
        "\x5d\xa4\xe9\x4c\xc3\x67\x94\x25\x8f\xd4\x03\x2d\xe7\xab\x36\xbc\x24"
        "\xc5\xef\xd5\xc8\x49\x5c\x1c\xcd\x58\x00\x33\xc5\x57\x25\xf2\xd6\x03"
        "\x54\xf8\xad\x59\x14\xa0\x15\x5e\xaa\x74\x33\x50\xdd\xb3\x88\xf4\x86"
        "\xb6\xde\x05\x49\xef\x3b\x1b\x3c\x3b\x7d\x4d\x3a\x83\x0f\xf3\x98\x85"
        "\x77\x61\x19\x40\x80\x29\xbe\x37\x88\xdd\x84\x22\xb1\xab\x7b\x4c\x9d"
        "\x5b\x7d\x86\x82\xfd\x75\x9c\x71\x31\x08\xe1\xbd\xfc\x64\xb9\x12\x1b"
        "\xbf\x07\x09\x9d\xef\x5c\x0c\xe3\xc8\x61\xae\x4b\x5c\xad\x8b\xba\x5a"
        "\x0b\x60\x59\xb9\xef\x90\xc2\xf9\x6a\x59\x32\x03\x09\xe2\x5d\xf8\x94"
        "\x84\x52\x2b\xb1\xd6\xea\xa9\x21\x64\xf9\xe4\x04\x2c\xb6\x89\xa4\x5a"
        "\x89\x83\x54\xc1\x7b\x08\x70\x52\x05\xa9\x18\x97\x72\xbc\xbc\xb6\x41"
        "\x4e\x44\xb3\x3a\x24\x70\xd3\xbc\x16\xf7\x61\xc3\x3f\x56\x5b\x9d\xa5"
        "\xe7\x99\x1a\xd8\x48\x25\x79\xcc\x1b\x16\xc1\xfc\xec\x81\x5a\x54\x82"
        "\xae\x8b\x17\x79\xc5\xe3\x39\x97\x1a\x6e\xc1\x21\x7b\xcf\xd1\xef\x24"
        "\x28\x4d\xe8\xa0\xa9\xf0\x68\xf2\x97\x03\x7d\x64\x78\xc2\x43\x4a\x9a"
        "\x18\xdc\xc6\xc7\xc7\x91\xe4\x44\xa7\x9d\x7c\xe3\x7f\x9c\xf2\xa4\x34"
        "\xb9\x04\x8c\xa6\xa2\xfa\x25\x4a\xa0\x2c\xd0\x98\x02\x67\x98\xa6\xd3"
        "\x36\x34\x8a\xf0\xfc\x11\xfa\x28\x09\xa5\xeb\xbe\x17\xca\x4d\x0f\x88"
        "\x9d\x51\x8f\x64\xee\x50\xf5\x62\xb5\xfd\xb1\xf7\x6d\x4a\x7f\xe1\x47"
        "\x01\xf8\xed\x0c\x6a\x55\xd6\x6a\x6e\xfe\xa3\xe4\x49\xe6\xb4\x78\x3d"
        "\x66\x66\x1a\x92\xf1\x74\xf8\x29\x3c\xf8\x3b\xce\xaf\x6c\x9e\xda\x1f"
        "\x83\x16\x6a\xa1\xe2\x09\x3d\x62\x68\x70\x51\x0e\x6c\xd1\x76\xd5\x01"
        "\xfe\x01\xe4\xa7\x52\xfc\x30\x13\x40\x73\x18\x8e\x3f\x82\x6f\x69\x5e"
        "\x4e\x14\xfc\xa6\x59\x69\x43\x46\x7c\x7d\xf1\x54\x49\x30\x23\xf7\x7c"
        "\x10\x7b\x3d\xb2\x0e\xa7\x5b\x49\x3b\x4b\x38\xdc\x43\x98\x6d\x94\x74"
        "\x8c\xbf\xab\x95\x4e\xda\xe2\x09\x82\xb6\xd2\x12\xa4\x4f\x4b\x40\x38"
        "\x78\x76\xbc\x9e\xb7\x39\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
        "\x00",
        3112);
    *(uint64_t*)0x20000210 = 0x20000340;
    memcpy((void*)0x20000340, "syzkaller\000", 10);
    *(uint32_t*)0x20000218 = 0;
    *(uint32_t*)0x2000021c = 0;
    *(uint64_t*)0x20000220 = 0;
    *(uint32_t*)0x20000228 = 0;
    *(uint32_t*)0x2000022c = 0;
    memset((void*)0x20000230, 0, 16);
    *(uint32_t*)0x20000240 = 0;
    *(uint32_t*)0x20000244 = 0;
    *(uint32_t*)0x20000248 = -1;
    *(uint32_t*)0x2000024c = 8;
    *(uint64_t*)0x20000250 = 0;
    *(uint32_t*)0x20000258 = 0;
    *(uint32_t*)0x2000025c = 0x10;
    *(uint64_t*)0x20000260 = 0;
    *(uint32_t*)0x20000268 = 0;
    *(uint32_t*)0x2000026c = 0;
    *(uint32_t*)0x20000270 = -1;
    *(uint32_t*)0x20000274 = 0;
    *(uint64_t*)0x20000278 = 0;
    *(uint64_t*)0x20000280 = 0;
    *(uint32_t*)0x20000288 = 0x10;
    *(uint32_t*)0x2000028c = 0;
    *(uint32_t*)0x20000290 = 0;
    res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000200ul, /*size=*/0x48ul);
    if (res != -1)
      r[1] = res;
    break;
  case 3:
    *(uint32_t*)0x20000080 = r[1];
    *(uint32_t*)0x20000084 = 0x2a0;
    *(uint32_t*)0x20000088 = 0xf;
    *(uint32_t*)0x2000008c = 0;
    *(uint64_t*)0x20000090 = 0x20000100;
    memcpy((void*)0x20000100,
           "\xb9\xff\x0b\x07\x68\x59\x26\x8c\xb8\x9e\x14\xf0\x88\xa8\x47", 15);
    *(uint64_t*)0x20000098 = 0;
    *(uint32_t*)0x200000a0 = 0xf00;
    *(uint32_t*)0x200000a4 = 0x60000000;
    *(uint32_t*)0x200000a8 = 0;
    *(uint32_t*)0x200000ac = 0;
    *(uint64_t*)0x200000b0 = 0;
    *(uint64_t*)0x200000b8 = 0;
    *(uint32_t*)0x200000c0 = 0;
    *(uint32_t*)0x200000c4 = 0;
    *(uint32_t*)0x200000c8 = 0;
    syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x20000080ul, /*size=*/0x50ul);
    break;
  case 4:
    *(uint64_t*)0x20000b80 = 0;
    *(uint32_t*)0x20000b88 = 0;
    *(uint64_t*)0x20000b90 = 0x20000b40;
    *(uint64_t*)0x20000b40 = 0x20000ac0;
    *(uint32_t*)0x20000ac0 = 5;
    *(uint32_t*)0x20000ac4 = 0x501;
    *(uint32_t*)0x20000ac8 = 0;
    *(uint64_t*)0x20000ad0 = 0;
    *(uint64_t*)0x20000ad8 = 0;
    *(uint64_t*)0x20000ae0 = 0;
    *(uint64_t*)0x20000ae8 = 0;
    STORE_BY_BITMASK(uint32_t, , 0x20000af0, 1, 0, 29);
    STORE_BY_BITMASK(uint32_t, , 0x20000af0, 1, 29, 1);
    STORE_BY_BITMASK(uint32_t, , 0x20000af0, 1, 30, 1);
    STORE_BY_BITMASK(uint32_t, , 0x20000af0, 0, 31, 1);
    *(uint32_t*)0x20000af4 = 1;
    STORE_BY_BITMASK(uint32_t, , 0x20000af8, 1, 0, 29);
    STORE_BY_BITMASK(uint32_t, , 0x20000af8, 1, 29, 1);
    STORE_BY_BITMASK(uint32_t, , 0x20000af8, 1, 30, 1);
    STORE_BY_BITMASK(uint32_t, , 0x20000af8, 0, 31, 1);
    *(uint8_t*)0x20000afc = 0;
    *(uint8_t*)0x20000afd = 0;
    *(uint8_t*)0x20000afe = 0;
    *(uint8_t*)0x20000aff = 0;
    memcpy((void*)0x20000b00, "\x3b\xd6\x1e\x0c\x1a\x7e\xa9\x70", 8);
    *(uint64_t*)0x20000b48 = 0x48;
    *(uint64_t*)0x20000b98 = 1;
    *(uint64_t*)0x20000ba0 = 0;
    *(uint64_t*)0x20000ba8 = 0;
    *(uint32_t*)0x20000bb0 = 0;
    syscall(__NR_sendmsg, /*fd=*/-1, /*msg=*/0x20000b80ul, /*f=*/0ul);
    break;
  }
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1,
          /*offset=*/0ul);
  setup_sysctl();
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}