// https://syzkaller.appspot.com/bug?id=fea5bb870d0bbd9cad118afe1136f0e4b9d17e7f
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/in.h>
#include <sched.h>
#include <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/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_ether.h>
#include <linux/if_link.h>
#include <linux/if_tun.h>
#include <linux/in6.h>
#include <linux/ip.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/tcp.h>
#include <linux/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 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);
}

#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))))

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

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

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

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

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

static struct nlmsg nlmsg;

static int tunfd = -1;

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

#define IFF_NAPI 0x0010

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

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

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

#define MAX_FDS 30

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

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

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

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

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

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

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

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

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

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

static void loop();

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

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

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

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

#define FS_IOC_SETFLAGS _IOW('f', 2, long)
static void remove_dir(const char* dir)
{
  int iter = 0;
  DIR* dp = 0;
  const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW;

retry:
  while (umount2(dir, umount_flags) == 0) {
  }
  dp = opendir(dir);
  if (dp == NULL) {
    if (errno == EMFILE) {
      exit(1);
    }
    exit(1);
  }
  struct dirent* ep = 0;
  while ((ep = readdir(dp))) {
    if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
      continue;
    char filename[FILENAME_MAX];
    snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
    while (umount2(filename, umount_flags) == 0) {
    }
    struct stat st;
    if (lstat(filename, &st))
      exit(1);
    if (S_ISDIR(st.st_mode)) {
      remove_dir(filename);
      continue;
    }
    int i;
    for (i = 0;; i++) {
      if (unlink(filename) == 0)
        break;
      if (errno == EPERM) {
        int fd = open(filename, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno != EBUSY || i > 100)
        exit(1);
      if (umount2(filename, umount_flags))
        exit(1);
    }
  }
  closedir(dp);
  for (int i = 0;; i++) {
    if (rmdir(dir) == 0)
      break;
    if (i < 100) {
      if (errno == EPERM) {
        int fd = open(dir, O_RDONLY);
        if (fd != -1) {
          long flags = 0;
          if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) {
          }
          close(fd);
          continue;
        }
      }
      if (errno == EROFS) {
        break;
      }
      if (errno == EBUSY) {
        if (umount2(dir, umount_flags))
          exit(1);
        continue;
      }
      if (errno == ENOTEMPTY) {
        if (iter < 100) {
          iter++;
          goto retry;
        }
      }
    }
    exit(1);
  }
}

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

static void setup_loop()
{
  setup_cgroups_loop();
}

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

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

static void execute_one(void);

#define WAIT_FLAGS __WALL

static void loop(void)
{
  setup_loop();
  int iter = 0;
  for (;; iter++) {
    char cwdbuf[32];
    sprintf(cwdbuf, "./%d", iter);
    if (mkdir(cwdbuf, 0777))
      exit(1);
    int pid = fork();
    if (pid < 0)
      exit(1);
    if (pid == 0) {
      if (chdir(cwdbuf))
        exit(1);
      setup_test();
      execute_one();
      close_fds();
      exit(0);
    }
    int status = 0;
    uint64_t start = current_time_ms();
    for (;;) {
      sleep_ms(10);
      if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        break;
      if (current_time_ms() - start < 5000)
        continue;
      kill_and_wait(pid, &status);
      break;
    }
    remove_dir(cwdbuf);
  }
}

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

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  perf_event_open arguments: [
  //    attr: ptr[in, perf_event_attr] {
  //      perf_event_attr {
  //        type: perf_event_type = 0x2 (4 bytes)
  //        size: len = 0x80 (4 bytes)
  //        config0: int8 = 0x4a (1 bytes)
  //        config1: int8 = 0x1 (1 bytes)
  //        config2: int8 = 0x0 (1 bytes)
  //        config3: int8 = 0x0 (1 bytes)
  //        config4: const = 0x0 (4 bytes)
  //        sample_freq: int64 = 0x4 (8 bytes)
  //        sample_type: perf_sample_type = 0x224 (8 bytes)
  //        read_format: perf_read_format = 0xe (8 bytes)
  //        disabled: int64 = 0x0 (0 bytes)
  //        inherit: int64 = 0x0 (0 bytes)
  //        pinned: int64 = 0x0 (0 bytes)
  //        exclusive: int64 = 0x0 (0 bytes)
  //        exclude_user: int64 = 0x0 (0 bytes)
  //        exclude_kernel: int64 = 0x0 (0 bytes)
  //        exclude_hv: int64 = 0x0 (0 bytes)
  //        exclude_idle: int64 = 0x0 (0 bytes)
  //        mmap: int64 = 0x0 (0 bytes)
  //        comm: int64 = 0x0 (0 bytes)
  //        freq: int64 = 0x0 (0 bytes)
  //        inherit_stat: int64 = 0x0 (0 bytes)
  //        enable_on_exec: int64 = 0x0 (0 bytes)
  //        task: int64 = 0x0 (0 bytes)
  //        watermark: int64 = 0x0 (0 bytes)
  //        precise_ip: int64 = 0x0 (0 bytes)
  //        mmap_data: int64 = 0x0 (0 bytes)
  //        sample_id_all: int64 = 0x0 (0 bytes)
  //        exclude_host: int64 = 0x0 (0 bytes)
  //        exclude_guest: int64 = 0x0 (0 bytes)
  //        exclude_callchain_kernel: int64 = 0x0 (0 bytes)
  //        exclude_callchain_user: int64 = 0x0 (0 bytes)
  //        mmap2: int64 = 0x0 (0 bytes)
  //        comm_exec: int64 = 0x0 (0 bytes)
  //        use_clockid: int64 = 0x0 (0 bytes)
  //        context_switch: int64 = 0x0 (0 bytes)
  //        write_backward: int64 = 0x0 (0 bytes)
  //        namespaces: int64 = 0x0 (0 bytes)
  //        ksymbol: int64 = 0x0 (0 bytes)
  //        bpf_event: int64 = 0x0 (0 bytes)
  //        aux_output: int64 = 0x0 (0 bytes)
  //        cgroup: int64 = 0x0 (0 bytes)
  //        text_poke: int64 = 0x0 (0 bytes)
  //        build_id: int64 = 0x0 (0 bytes)
  //        inherit_thread: int64 = 0x0 (0 bytes)
  //        remove_on_exec: int64 = 0x0 (0 bytes)
  //        sigtrap: int64 = 0x0 (0 bytes)
  //        __reserved_1: const = 0x0 (8 bytes)
  //        wakeup_events: int32 = 0x0 (4 bytes)
  //        bp_type: perf_bp_type = 0x0 (4 bytes)
  //        bp_config: union perf_bp_config {
  //          perf_config_ext: perf_config_ext {
  //            config1: int64 = 0x0 (8 bytes)
  //            config2: int64 = 0x8000001946 (8 bytes)
  //          }
  //        }
  //        branch_sample_type: perf_branch_sample_type = 0x0 (8 bytes)
  //        sample_regs_user: int64 = 0x0 (8 bytes)
  //        sample_stack_user: int32 = 0x0 (4 bytes)
  //        clockid: clock_type = 0x8 (4 bytes)
  //        sample_regs_intr: int64 = 0x3fe (8 bytes)
  //        aux_watermark: int32 = 0x9 (4 bytes)
  //        sample_max_stack: int16 = 0xd (2 bytes)
  //        __reserved_2: const = 0x0 (2 bytes)
  //        aux_sample_size: int32 = 0x0 (4 bytes)
  //        __reserved_3: const = 0x0 (4 bytes)
  //        sig_data: int64 = 0x0 (8 bytes)
  //      }
  //    }
  //    pid: pid (resource)
  //    cpu: intptr = 0xffffffffffffffff (8 bytes)
  //    group: fd_perf (resource)
  //    flags: perf_flags = 0xa (8 bytes)
  //  ]
  //  returns fd_perf
  *(uint32_t*)0x200000000180 = 2;
  *(uint32_t*)0x200000000184 = 0x80;
  *(uint8_t*)0x200000000188 = 0x4a;
  *(uint8_t*)0x200000000189 = 1;
  *(uint8_t*)0x20000000018a = 0;
  *(uint8_t*)0x20000000018b = 0;
  *(uint32_t*)0x20000000018c = 0;
  *(uint64_t*)0x200000000190 = 4;
  *(uint64_t*)0x200000000198 = 0x224;
  *(uint64_t*)0x2000000001a0 = 0xe;
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 29, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 30, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 31, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 32, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 33, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 34, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 35, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 36, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 37, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000001a8, 0, 38, 26);
  *(uint32_t*)0x2000000001b0 = 0;
  *(uint32_t*)0x2000000001b4 = 0;
  *(uint64_t*)0x2000000001b8 = 0;
  *(uint64_t*)0x2000000001c0 = 0x8000001946;
  *(uint64_t*)0x2000000001c8 = 0;
  *(uint64_t*)0x2000000001d0 = 0;
  *(uint32_t*)0x2000000001d8 = 0;
  *(uint32_t*)0x2000000001dc = 8;
  *(uint64_t*)0x2000000001e0 = 0x3fe;
  *(uint32_t*)0x2000000001e8 = 9;
  *(uint16_t*)0x2000000001ec = 0xd;
  *(uint16_t*)0x2000000001ee = 0;
  *(uint32_t*)0x2000000001f0 = 0;
  *(uint32_t*)0x2000000001f4 = 0;
  *(uint64_t*)0x2000000001f8 = 0;
  syscall(__NR_perf_event_open, /*attr=*/0x200000000180ul, /*pid=*/0,
          /*cpu=*/(intptr_t)-1, /*group=*/(intptr_t)-1,
          /*flags=PERF_FLAG_FD_CLOEXEC|PERF_FLAG_FD_OUTPUT*/ 0xaul);
  //  bpf$MAP_CREATE arguments: [
  //    cmd: const = 0x0 (8 bytes)
  //    arg: ptr[in, bpf_map_create_arg] {
  //      union bpf_map_create_arg {
  //        base: bpf_map_create_arg_t[flags[bpf_map_type, int32], int32, int32,
  //        int32, flags[map_flags, int32], const[0, int64]] {
  //          type: bpf_map_type = 0x7 (4 bytes)
  //          ksize: int32 = 0x4 (4 bytes)
  //          vsize: int32 = 0x80 (4 bytes)
  //          max: int32 = 0x4 (4 bytes)
  //          flags: map_flags = 0x28 (4 bytes)
  //          inner: fd_bpf_map (resource)
  //          node: int32 = 0x0 (4 bytes)
  //          map_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //          00} (length 0x10) map_ifindex: ifindex (resource) btf_fd: fd_btf
  //          (resource) btf_key_type_id: int32 = 0x0 (4 bytes)
  //          btf_value_type_id: int32 = 0x0 (4 bytes)
  //          btf_vmlinux_type_id: int32 = 0x0 (4 bytes)
  //          map_extra: const = 0x0 (8 bytes)
  //          value_type_btf_obj_fd: union
  //          _bpf_map_create_arg_t[flags[bpf_map_type, int32], int32, int32,
  //          int32, flags[map_flags, int32], const[0,
  //          int64]]_value_type_btf_obj_fd_wrapper {
  //            void: buffer: {} (length 0x0)
  //          }
  //          pad1: union _bpf_map_create_arg_t[flags[bpf_map_type, int32],
  //          int32, int32, int32, flags[map_flags, int32], const[0,
  //          int64]]_pad1_wrapper {
  //            value: const = 0x0 (4 bytes)
  //          }
  //          map_token_fd: union _bpf_map_create_arg_t[flags[bpf_map_type,
  //          int32], int32, int32, int32, flags[map_flags, int32], const[0,
  //          int64]]_map_token_fd_wrapper {
  //            void: buffer: {} (length 0x0)
  //          }
  //          pad2: union _bpf_map_create_arg_t[flags[bpf_map_type, int32],
  //          int32, int32, int32, flags[map_flags, int32], const[0,
  //          int64]]_pad2_wrapper {
  //            value: const = 0x0 (4 bytes)
  //          }
  //        }
  //      }
  //    }
  //    size: len = 0x50 (8 bytes)
  //  ]
  //  returns fd_bpf_map
  *(uint32_t*)0x200000000280 = 7;
  *(uint32_t*)0x200000000284 = 4;
  *(uint32_t*)0x200000000288 = 0x80;
  *(uint32_t*)0x20000000028c = 4;
  *(uint32_t*)0x200000000290 = 0x28;
  *(uint32_t*)0x200000000294 = -1;
  *(uint32_t*)0x200000000298 = 0;
  memset((void*)0x20000000029c, 0, 16);
  *(uint32_t*)0x2000000002ac = 0;
  *(uint32_t*)0x2000000002b0 = -1;
  *(uint32_t*)0x2000000002b4 = 0;
  *(uint32_t*)0x2000000002b8 = 0;
  *(uint32_t*)0x2000000002bc = 0;
  *(uint64_t*)0x2000000002c0 = 0;
  *(uint32_t*)0x2000000002c8 = 0;
  *(uint32_t*)0x2000000002cc = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000000280ul, /*size=*/0x50ul);
  if (res != -1)
    r[0] = res;
  //  bpf$PROG_LOAD arguments: [
  //    cmd: const = 0x5 (8 bytes)
  //    arg: ptr[in, bpf_prog_t[flags[bpf_prog_type, int32],
  //    bpf_prog_attach_types, bpf_btf_id[opt], fd_bpf_prog[opt]]] {
  //      bpf_prog_t[flags[bpf_prog_type, int32], bpf_prog_attach_types,
  //      bpf_btf_id[opt], fd_bpf_prog[opt]] {
  //        type: bpf_prog_type = 0x11 (4 bytes)
  //        ninsn: bytesize8 = 0x8 (4 bytes)
  //        insns: ptr[in, bpf_instructions] {
  //          union bpf_instructions {
  //            framed: bpf_framed_program {
  //              initr0: bpf_insn_init_r0 {
  //                code: const = 0x18 (1 bytes)
  //                dst: const = 0x0 (0 bytes)
  //                src: const = 0x0 (1 bytes)
  //                off: const = 0x0 (2 bytes)
  //                imm: int32 = 0x0 (4 bytes)
  //                code2: const = 0x0 (1 bytes)
  //                regs2: const = 0x0 (1 bytes)
  //                off2: const = 0x0 (2 bytes)
  //                imm2: int32 = 0x0 (4 bytes)
  //              }
  //              body: array[bpf_insn] {
  //                union bpf_insn {
  //                  tail_call: bpf_insn_tail_call {
  //                    insn1: bpf_insn_map_fd_t[const[BPF_REG_2, int8:4],
  //                    tail_call_map] {
  //                      code: const = 0x18 (1 bytes)
  //                      dst: const = 0x2 (0 bytes)
  //                      src: const = 0x1 (1 bytes)
  //                      off: const = 0x0 (2 bytes)
  //                      imm: tail_call_map (resource)
  //                      code2: const = 0x0 (1 bytes)
  //                      regs2: const = 0x0 (1 bytes)
  //                      off2: const = 0x0 (2 bytes)
  //                      imm2: const = 0x0 (4 bytes)
  //                    }
  //                    insn2: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                    const[BPF_REG_3, int8:4], const[0, int8:4], const[0,
  //                    int16], const[0, int32]] {
  //                      code_class: int8 = 0x7 (0 bytes)
  //                      code_s: int8 = 0x0 (0 bytes)
  //                      code_op: int8 = 0xb (1 bytes)
  //                      dst: const = 0x3 (0 bytes)
  //                      src: const = 0x0 (1 bytes)
  //                      off: const = 0x0 (2 bytes)
  //                      imm: const = 0x0 (4 bytes)
  //                    }
  //                    insn3: bpf_insn_call_helper_t[const[BPF_FUNC_tail_call,
  //                    int32]] {
  //                      code: const = 0x85 (1 bytes)
  //                      regs: const = 0x0 (1 bytes)
  //                      off: const = 0x0 (2 bytes)
  //                      func: const = 0x1b (4 bytes)
  //                    }
  //                    insn4: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0,
  //                    const[BPF_REG_0, int8:4], const[0, int8:4], const[0,
  //                    int16], const[0, int32]] {
  //                      code_class: int8 = 0x7 (0 bytes)
  //                      code_s: int8 = 0x0 (0 bytes)
  //                      code_op: int8 = 0xb (1 bytes)
  //                      dst: const = 0x0 (0 bytes)
  //                      src: const = 0x0 (1 bytes)
  //                      off: const = 0x0 (2 bytes)
  //                      imm: const = 0x0 (4 bytes)
  //                    }
  //                  }
  //                }
  //              }
  //              exit: bpf_insn_exit {
  //                code: const = 0x95 (1 bytes)
  //                regs: const = 0x0 (1 bytes)
  //                off: const = 0x0 (2 bytes)
  //                imm: const = 0x0 (4 bytes)
  //              }
  //            }
  //          }
  //        }
  //        license: ptr[in, buffer] {
  //          buffer: {47 50 4c 00} (length 0x4)
  //        }
  //        loglev: int32 = 0x0 (4 bytes)
  //        logsize: len = 0x0 (4 bytes)
  //        log: nil
  //        kern_version: bpf_kern_version = 0x41000 (4 bytes)
  //        flags: bpf_prog_load_flags = 0x0 (4 bytes)
  //        prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00}
  //        (length 0x10) prog_ifindex: ifindex (resource) expected_attach_type:
  //        union bpf_prog_attach_types {
  //          fallback: bpf_attach_types = 0x2d (4 bytes)
  //        }
  //        btf_fd: fd_btf (resource)
  //        func_info_rec_size: const = 0x0 (4 bytes)
  //        func_info: nil
  //        func_info_cnt: len = 0x0 (4 bytes)
  //        line_info_rec_size: const = 0x0 (4 bytes)
  //        line_info: nil
  //        line_info_cnt: len = 0x0 (4 bytes)
  //        attach_btf_id: bpf_btf_id (resource)
  //        attach_prog_fd: fd_bpf_prog (resource)
  //        core_relo_cnt: len = 0x0 (4 bytes)
  //        fd_array: nil
  //        core_relos: nil
  //        core_relo_rec_size: const = 0x0 (4 bytes)
  //        log_true_size: int32 = 0x0 (4 bytes)
  //        prog_token_fd: union _bpf_prog_t[flags[bpf_prog_type, int32],
  //        bpf_prog_attach_types, bpf_btf_id[opt],
  //        fd_bpf_prog[opt]]_prog_token_fd_wrapper {
  //          void: buffer: {} (length 0x0)
  //        }
  //        pad: union _bpf_prog_t[flags[bpf_prog_type, int32],
  //        bpf_prog_attach_types, bpf_btf_id[opt],
  //        fd_bpf_prog[opt]]_pad_wrapper {
  //          value: const = 0x0 (4 bytes)
  //        }
  //      }
  //    }
  //    size: len = 0x94 (8 bytes)
  //  ]
  //  returns fd_bpf_prog
  *(uint32_t*)0x200000000680 = 0x11;
  *(uint32_t*)0x200000000684 = 8;
  *(uint64_t*)0x200000000688 = 0x200000000080;
  *(uint8_t*)0x200000000080 = 0x18;
  STORE_BY_BITMASK(uint8_t, , 0x200000000081, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x200000000081, 0, 4, 4);
  *(uint16_t*)0x200000000082 = 0;
  *(uint32_t*)0x200000000084 = 0;
  *(uint8_t*)0x200000000088 = 0;
  *(uint8_t*)0x200000000089 = 0;
  *(uint16_t*)0x20000000008a = 0;
  *(uint32_t*)0x20000000008c = 0;
  *(uint8_t*)0x200000000090 = 0x18;
  STORE_BY_BITMASK(uint8_t, , 0x200000000091, 2, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x200000000091, 1, 4, 4);
  *(uint16_t*)0x200000000092 = 0;
  *(uint32_t*)0x200000000094 = r[0];
  *(uint8_t*)0x200000000098 = 0;
  *(uint8_t*)0x200000000099 = 0;
  *(uint16_t*)0x20000000009a = 0;
  *(uint32_t*)0x20000000009c = 0;
  STORE_BY_BITMASK(uint8_t, , 0x2000000000a0, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000a0, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000a0, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000a1, 3, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000a1, 0, 4, 4);
  *(uint16_t*)0x2000000000a2 = 0;
  *(uint32_t*)0x2000000000a4 = 0;
  *(uint8_t*)0x2000000000a8 = 0x85;
  *(uint8_t*)0x2000000000a9 = 0;
  *(uint16_t*)0x2000000000aa = 0;
  *(uint32_t*)0x2000000000ac = 0x1b;
  STORE_BY_BITMASK(uint8_t, , 0x2000000000b0, 7, 0, 3);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000b0, 0, 3, 1);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000b0, 0xb, 4, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000b1, 0, 0, 4);
  STORE_BY_BITMASK(uint8_t, , 0x2000000000b1, 0, 4, 4);
  *(uint16_t*)0x2000000000b2 = 0;
  *(uint32_t*)0x2000000000b4 = 0;
  *(uint8_t*)0x2000000000b8 = 0x95;
  *(uint8_t*)0x2000000000b9 = 0;
  *(uint16_t*)0x2000000000ba = 0;
  *(uint32_t*)0x2000000000bc = 0;
  *(uint64_t*)0x200000000690 = 0x200000000780;
  memcpy((void*)0x200000000780, "GPL\000", 4);
  *(uint32_t*)0x200000000698 = 0;
  *(uint32_t*)0x20000000069c = 0;
  *(uint64_t*)0x2000000006a0 = 0;
  *(uint32_t*)0x2000000006a8 = 0x41000;
  *(uint32_t*)0x2000000006ac = 0;
  memset((void*)0x2000000006b0, 0, 16);
  *(uint32_t*)0x2000000006c0 = 0;
  *(uint32_t*)0x2000000006c4 = 0x2d;
  *(uint32_t*)0x2000000006c8 = 0;
  *(uint32_t*)0x2000000006cc = 0;
  *(uint64_t*)0x2000000006d0 = 0;
  *(uint32_t*)0x2000000006d8 = 0;
  *(uint32_t*)0x2000000006dc = 0;
  *(uint64_t*)0x2000000006e0 = 0;
  *(uint32_t*)0x2000000006e8 = 0;
  *(uint32_t*)0x2000000006ec = 0;
  *(uint32_t*)0x2000000006f0 = 0;
  *(uint32_t*)0x2000000006f4 = 0;
  *(uint64_t*)0x2000000006f8 = 0;
  *(uint64_t*)0x200000000700 = 0;
  *(uint32_t*)0x200000000708 = 0;
  *(uint32_t*)0x20000000070c = 0;
  *(uint32_t*)0x200000000710 = 0;
  res =
      syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000680ul, /*size=*/0x94ul);
  if (res != -1)
    r[1] = res;
  //  bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [
  //    cmd: const = 0x11 (8 bytes)
  //    arg: ptr[in, bpf_raw_tracepoint] {
  //      bpf_raw_tracepoint {
  //        name: ptr[in, buffer] {
  //          buffer: {6b 66 72 65 65 00} (length 0x6)
  //        }
  //        prog_fd: fd_bpf_prog_raw_tracepoint (resource)
  //        pad: const = 0x0 (4 bytes)
  //        cookie: int64 = 0x0 (8 bytes)
  //      }
  //    }
  //    size: len = 0x18 (8 bytes)
  //  ]
  //  returns fd_perf_base
  *(uint64_t*)0x200000000f40 = 0x200000000f00;
  memcpy((void*)0x200000000f00, "kfree\000", 6);
  *(uint32_t*)0x200000000f48 = r[1];
  *(uint32_t*)0x200000000f4c = 0;
  *(uint64_t*)0x200000000f50 = 0;
  syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000000f40ul, /*size=*/0x18ul);
  //  perf_event_open arguments: [
  //    attr: ptr[in, perf_event_attr] {
  //      perf_event_attr {
  //        type: perf_event_type = 0x1 (4 bytes)
  //        size: len = 0x80 (4 bytes)
  //        config0: int8 = 0x0 (1 bytes)
  //        config1: int8 = 0x0 (1 bytes)
  //        config2: int8 = 0x0 (1 bytes)
  //        config3: int8 = 0x0 (1 bytes)
  //        config4: const = 0x0 (4 bytes)
  //        sample_freq: int64 = 0x4d31 (8 bytes)
  //        sample_type: perf_sample_type = 0x0 (8 bytes)
  //        read_format: perf_read_format = 0x1 (8 bytes)
  //        disabled: int64 = 0x0 (0 bytes)
  //        inherit: int64 = 0x0 (0 bytes)
  //        pinned: int64 = 0x0 (0 bytes)
  //        exclusive: int64 = 0x0 (0 bytes)
  //        exclude_user: int64 = 0x0 (0 bytes)
  //        exclude_kernel: int64 = 0x0 (0 bytes)
  //        exclude_hv: int64 = 0x0 (0 bytes)
  //        exclude_idle: int64 = 0x0 (0 bytes)
  //        mmap: int64 = 0x0 (0 bytes)
  //        comm: int64 = 0x0 (0 bytes)
  //        freq: int64 = 0x0 (0 bytes)
  //        inherit_stat: int64 = 0x0 (0 bytes)
  //        enable_on_exec: int64 = 0x0 (0 bytes)
  //        task: int64 = 0x0 (0 bytes)
  //        watermark: int64 = 0x0 (0 bytes)
  //        precise_ip: int64 = 0x0 (0 bytes)
  //        mmap_data: int64 = 0x0 (0 bytes)
  //        sample_id_all: int64 = 0x0 (0 bytes)
  //        exclude_host: int64 = 0x0 (0 bytes)
  //        exclude_guest: int64 = 0x0 (0 bytes)
  //        exclude_callchain_kernel: int64 = 0x0 (0 bytes)
  //        exclude_callchain_user: int64 = 0x0 (0 bytes)
  //        mmap2: int64 = 0x0 (0 bytes)
  //        comm_exec: int64 = 0x0 (0 bytes)
  //        use_clockid: int64 = 0x0 (0 bytes)
  //        context_switch: int64 = 0x0 (0 bytes)
  //        write_backward: int64 = 0x0 (0 bytes)
  //        namespaces: int64 = 0x0 (0 bytes)
  //        ksymbol: int64 = 0x0 (0 bytes)
  //        bpf_event: int64 = 0x0 (0 bytes)
  //        aux_output: int64 = 0x0 (0 bytes)
  //        cgroup: int64 = 0x0 (0 bytes)
  //        text_poke: int64 = 0x0 (0 bytes)
  //        build_id: int64 = 0x0 (0 bytes)
  //        inherit_thread: int64 = 0x0 (0 bytes)
  //        remove_on_exec: int64 = 0x0 (0 bytes)
  //        sigtrap: int64 = 0x0 (0 bytes)
  //        __reserved_1: const = 0x0 (8 bytes)
  //        wakeup_events: int32 = 0x0 (4 bytes)
  //        bp_type: perf_bp_type = 0x1 (4 bytes)
  //        bp_config: union perf_bp_config {
  //          perf_bp: perf_bp {
  //            bp_addr: nil
  //            bp_len: perf_bp_lens = 0x8 (8 bytes)
  //          }
  //        }
  //        branch_sample_type: perf_branch_sample_type = 0x0 (8 bytes)
  //        sample_regs_user: int64 = 0x2 (8 bytes)
  //        sample_stack_user: int32 = 0xfffffffe (4 bytes)
  //        clockid: clock_type = 0x0 (4 bytes)
  //        sample_regs_intr: int64 = 0x0 (8 bytes)
  //        aux_watermark: int32 = 0x6 (4 bytes)
  //        sample_max_stack: int16 = 0x0 (2 bytes)
  //        __reserved_2: const = 0x0 (2 bytes)
  //        aux_sample_size: int32 = 0x0 (4 bytes)
  //        __reserved_3: const = 0x0 (4 bytes)
  //        sig_data: int64 = 0x48000000000000 (8 bytes)
  //      }
  //    }
  //    pid: pid (resource)
  //    cpu: intptr = 0xffffffffffffffff (8 bytes)
  //    group: fd_perf (resource)
  //    flags: perf_flags = 0x3 (8 bytes)
  //  ]
  //  returns fd_perf
  *(uint32_t*)0x2000000003c0 = 1;
  *(uint32_t*)0x2000000003c4 = 0x80;
  *(uint8_t*)0x2000000003c8 = 0;
  *(uint8_t*)0x2000000003c9 = 0;
  *(uint8_t*)0x2000000003ca = 0;
  *(uint8_t*)0x2000000003cb = 0;
  *(uint32_t*)0x2000000003cc = 0;
  *(uint64_t*)0x2000000003d0 = 0x4d31;
  *(uint64_t*)0x2000000003d8 = 0;
  *(uint64_t*)0x2000000003e0 = 1;
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 0, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 1, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 2, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 3, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 4, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 5, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 6, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 7, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 8, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 9, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 10, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 11, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 12, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 13, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 14, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 15, 2);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 17, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 18, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 19, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 20, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 21, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 22, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 23, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 24, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 25, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 26, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 27, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 28, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 29, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 30, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 31, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 32, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 33, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 34, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 35, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 36, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 37, 1);
  STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 38, 26);
  *(uint32_t*)0x2000000003f0 = 0;
  *(uint32_t*)0x2000000003f4 = 1;
  *(uint64_t*)0x2000000003f8 = 0;
  *(uint64_t*)0x200000000400 = 8;
  *(uint64_t*)0x200000000408 = 0;
  *(uint64_t*)0x200000000410 = 2;
  *(uint32_t*)0x200000000418 = 0xfffffffe;
  *(uint32_t*)0x20000000041c = 0;
  *(uint64_t*)0x200000000420 = 0;
  *(uint32_t*)0x200000000428 = 6;
  *(uint16_t*)0x20000000042c = 0;
  *(uint16_t*)0x20000000042e = 0;
  *(uint32_t*)0x200000000430 = 0;
  *(uint32_t*)0x200000000434 = 0;
  *(uint64_t*)0x200000000438 = 0x48000000000000;
  syscall(__NR_perf_event_open, /*attr=*/0x2000000003c0ul, /*pid=*/0,
          /*cpu=*/(intptr_t)-1, /*group=*/(intptr_t)-1,
          /*flags=PERF_FLAG_FD_OUTPUT|PERF_FLAG_FD_NO_GROUP*/ 3ul);
}
int main(void)
{
  syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul,
          /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul,
          /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul,
          /*fd=*/(intptr_t)-1, /*offset=*/0ul);
  setup_cgroups();
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}