// https://syzkaller.appspot.com/bug?id=3597d5fd3cb3d0fb27947361d206910bcb27d7a7
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <dirent.h>
#include <endian.h>
#include <errno.h>
#include <fcntl.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/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>

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);
}

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;
}

const int kInitNetNsFd = 201;

#define MAX_FDS 30

static long syz_open_procfs(volatile long a0, volatile long a1)
{
  char buf[128];
  memset(buf, 0, sizeof(buf));
  if (a0 == 0) {
    snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1);
  } else if (a0 == -1) {
    snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1);
  } else {
    snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1);
  }
  int fd = open(buf, O_RDWR);
  if (fd == -1)
    fd = open(buf, O_RDONLY);
  return fd;
}

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  int netns = open("/proc/self/ns/net", O_RDONLY);
  if (netns == -1)
    return netns;
  if (setns(kInitNetNsFd, 0))
    return -1;
  int sock = syscall(__NR_socket, domain, type, proto);
  int err = errno;
  if (setns(netns, 0)) {
    exit(1);
  }
  close(netns);
  errno = err;
  return sock;
}

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);
  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);
  int netns = open("/proc/self/ns/net", O_RDONLY);
  if (netns == -1)
    exit(1);
  if (dup2(netns, kInitNetNsFd) < 0)
    exit(1);
  close(netns);
  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");
  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_test()
{
  prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0);
  setpgrp();
  write_file("/proc/self/oom_score_adj", "1000");
  if (symlink("/dev/binderfs", "./binderfs")) {
  }
}

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

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

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

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

static void execute_one(void)
{
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  int i, call, thread;
  for (call = 0; call < 10; call++) {
    for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0]));
         thread++) {
      struct thread_t* th = &threads[thread];
      if (!th->created) {
        th->created = 1;
        event_init(&th->ready);
        event_init(&th->done);
        event_set(&th->done);
        thread_start(thr, th);
      }
      if (!event_isset(&th->done))
        continue;
      event_reset(&th->done);
      th->call = call;
      __atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
      event_set(&th->ready);
      event_timedwait(&th->done, 50);
      break;
    }
  }
  for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
    sleep_ms(1);
  close_fds();
}

static void execute_one(void);

#define WAIT_FLAGS __WALL

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

uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0x0};

void execute_call(int call)
{
  intptr_t res = 0;
  switch (call) {
  case 0:
    //  socket$inet_icmp_raw arguments: [
    //    domain: const = 0x2 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0x1 (4 bytes)
    //  ]
    //  returns sock_icmp
    syscall(__NR_socket, /*domain=*/2ul, /*type=*/3ul, /*proto=*/1);
    break;
  case 1:
    //  syz_init_net_socket$bt_hci arguments: [
    //    fam: const = 0x1f (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: const = 0x5 (8 bytes)
    //  ]
    //  returns sock_bt_hci
    syz_init_net_socket(/*fam=*/0x1f, /*type=*/3, /*proto=*/5);
    break;
  case 2:
    //  close arguments: [
    //    fd: fd (resource)
    //  ]
    syscall(__NR_close, /*fd=*/4);
    break;
  case 3:
    //  syz_open_procfs$namespace arguments: [
    //    pid: pid (resource)
    //    file: ptr[in, buffer] {
    //      buffer: {6e 73 2f 70 69 64 5f 66 6f 72 5f 63 68 69 6c 64 72 65 6e
    //      00} (length 0x14)
    //    }
    //  ]
    //  returns fd_namespace
    memcpy((void*)0x200000000200, "ns/pid_for_children\000", 20);
    syz_open_procfs(/*pid=*/0, /*file=*/0x200000000200);
    break;
  case 4:
    //  socket$netlink arguments: [
    //    domain: const = 0x10 (8 bytes)
    //    type: const = 0x3 (8 bytes)
    //    proto: netlink_proto = 0x0 (4 bytes)
    //  ]
    //  returns sock_netlink
    res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0);
    if (res != -1)
      r[0] = res;
    break;
  case 5:
    //  socket arguments: [
    //    domain: socket_domain = 0x10 (8 bytes)
    //    type: socket_type = 0x803 (8 bytes)
    //    proto: int32 = 0x0 (4 bytes)
    //  ]
    //  returns sock
    res = syscall(__NR_socket, /*domain=AF_NETLINK*/ 0x10ul,
                  /*type=SOCK_NONBLOCK|SOCK_RAW*/ 0x803ul, /*proto=*/0);
    if (res != -1)
      r[1] = res;
    break;
  case 6:
    //  sendmsg$NL80211_CMD_CRIT_PROTOCOL_START arguments: [
    //    fd: sock_nl_generic (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_t[nl80211_family_id,
    //    msg_nl80211_payload[NL80211_CMD_CRIT_PROTOCOL_START,
    //    nl80211_wdev_payload], nl80211_policy$crit_proto_start]]] {
    //      msghdr_netlink[netlink_msg_t[nl80211_family_id,
    //      msg_nl80211_payload[NL80211_CMD_CRIT_PROTOCOL_START,
    //      nl80211_wdev_payload], nl80211_policy$crit_proto_start]] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_t[nl80211_family_id,
    //        msg_nl80211_payload[NL80211_CMD_CRIT_PROTOCOL_START,
    //        nl80211_wdev_payload], nl80211_policy$crit_proto_start]]] {
    //          iovec[in, netlink_msg_t[nl80211_family_id,
    //          msg_nl80211_payload[NL80211_CMD_CRIT_PROTOCOL_START,
    //          nl80211_wdev_payload], nl80211_policy$crit_proto_start]] {
    //            addr: nil
    //            len: len = 0x1c (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000580 = 0;
    *(uint32_t*)0x200000000588 = 0;
    *(uint64_t*)0x200000000590 = 0x200000000540;
    *(uint64_t*)0x200000000540 = 0;
    *(uint64_t*)0x200000000548 = 0x1c;
    *(uint64_t*)0x200000000598 = 1;
    *(uint64_t*)0x2000000005a0 = 0;
    *(uint64_t*)0x2000000005a8 = 0;
    *(uint32_t*)0x2000000005b0 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000580ul, /*f=*/0ul);
    break;
  case 7:
    //  getsockname$packet arguments: [
    //    fd: sock_packet (resource)
    //    addr: ptr[out, sockaddr_ll] {
    //      sockaddr_ll {
    //        sll_family: const = 0x11 (2 bytes)
    //        sll_protocol: packet_protocols = 0x0 (2 bytes)
    //        sll_ifindex: ifindex (resource)
    //        sll_hatype: const = 0x1 (2 bytes)
    //        sll_pkttype: int8 = 0x0 (1 bytes)
    //        sll_halen: const = 0x6 (1 bytes)
    //        sll_addr: union mac_addr {
    //          broadcast: buffer: (DirOut)
    //        }
    //        pad: buffer: (DirOut)
    //      }
    //    }
    //    addrlen: ptr[inout, len] {
    //      len = 0x14 (4 bytes)
    //    }
    //  ]
    *(uint32_t*)0x200000000080 = 0x14;
    res = syscall(__NR_getsockname, /*fd=*/r[1], /*addr=*/0x200000000600ul,
                  /*addrlen=*/0x200000000080ul);
    if (res != -1)
      r[2] = *(uint32_t*)0x200000000604;
    break;
  case 8:
    //  sendmsg$nl_route arguments: [
    //    fd: sock_nl_route (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
    //      msghdr_netlink[netlink_msg_route] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_route]] {
    //          iovec[in, netlink_msg_route] {
    //            addr: ptr[inout, array[ANYUNION]] {
    //              array[ANYUNION] {
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {3c 00 00 00 10 00 85 06 00 00 00 00 ff
    //                  61 22 31 4a 00 08 00} (length 0x14)
    //                }
    //                union ANYUNION {
    //                  ANYRES32: ANYRES32 (resource)
    //                }
    //                union ANYUNION {
    //                  ANYBLOB: buffer: {f5 ff 0f 00 25 21 55 b2 1c 00 12 00 0c
    //                  00 01 00 62 6f 6e 64 00 00 00 00 0c 00 02 00 08 00 01 00
    //                  01} (length 0x21)
    //                }
    //              }
    //            }
    //            len: len = 0x3c (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x40000 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000040 = 0;
    *(uint32_t*)0x200000000048 = 0;
    *(uint64_t*)0x200000000050 = 0x200000000000;
    *(uint64_t*)0x200000000000 = 0x200000000640;
    memcpy((void*)0x200000000640,
           "\x3c\x00\x00\x00\x10\x00\x85\x06\x00\x00\x00\x00\xff\x61\x22\x31"
           "\x4a\x00\x08\x00",
           20);
    *(uint32_t*)0x200000000654 = r[2];
    memcpy(
        (void*)0x200000000658,
        "\xf5\xff\x0f\x00\x25\x21\x55\xb2\x1c\x00\x12\x00\x0c\x00\x01\x00\x62"
        "\x6f\x6e\x64\x00\x00\x00\x00\x0c\x00\x02\x00\x08\x00\x01\x00\x01",
        33);
    *(uint64_t*)0x200000000008 = 0x3c;
    *(uint64_t*)0x200000000058 = 1;
    *(uint64_t*)0x200000000060 = 0;
    *(uint64_t*)0x200000000068 = 0;
    *(uint32_t*)0x200000000070 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000040ul,
            /*f=MSG_BATCH*/ 0x40000ul);
    break;
  case 9:
    //  sendmsg$nl_route arguments: [
    //    fd: sock_nl_route (resource)
    //    msg: ptr[in, msghdr_netlink[netlink_msg_route]] {
    //      msghdr_netlink[netlink_msg_route] {
    //        addr: nil
    //        addrlen: len = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //        vec: ptr[in, iovec[in, netlink_msg_route]] {
    //          iovec[in, netlink_msg_route] {
    //            addr: ptr[in, netlink_msg_route] {
    //              union netlink_msg_route {
    //                newlink: netlink_msg_t[const[RTM_NEWLINK, int16],
    //                ifinfomsg[AF_UNSPEC], ifla_policy] {
    //                  len: len = 0x68 (4 bytes)
    //                  type: const = 0x10 (2 bytes)
    //                  flags: netlink_msg_flags = 0x503 (2 bytes)
    //                  seq: int32 = 0x70bd2a (4 bytes)
    //                  pid: int32 = 0x700 (4 bytes)
    //                  payload: ifinfomsg[AF_UNSPEC] {
    //                    ifi_family: const = 0x0 (1 bytes)
    //                    __ifi_pad: const = 0x0 (1 bytes)
    //                    ifi_type: const = 0x0 (2 bytes)
    //                    ifi_index: ifindex (resource)
    //                    ifi_flags: net_device_flags = 0x0 (4 bytes)
    //                    ifi_change: net_device_flags = 0x3806 (4 bytes)
    //                  }
    //                  attrs: array[ifla_policy] {
    //                    union ifla_policy {
    //                      IFLA_LINKINFO: nlattr_tt[const[IFLA_LINKINFO,
    //                      int16:14], 0, 1, ifla_info_policy] {
    //                        nla_len: offsetof = 0x38 (2 bytes)
    //                        nla_type: const = 0x12 (1 bytes)
    //                        NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                        NLA_F_NESTED: const = 0x1 (1 bytes)
    //                        payload: union ifla_info_policy {
    //                          ip6gre: ifla_info_policy$t["ip6gre",
    //                          IFLA_INFO_DATA, array[ip6gre_policy]] {
    //                            IFLA_INFO_KIND: nlattr_t[const[IFLA_INFO_KIND,
    //                            int16], string["ip6gre"]] {
    //                              nla_len: offsetof = 0xb (2 bytes)
    //                              nla_type: const = 0x1 (2 bytes)
    //                              payload: buffer: {69 70 36 67 72 65 00}
    //                              (length 0x7) size: buffer: {} (length 0x0)
    //                              pad = 0x0 (1 bytes)
    //                            }
    //                            IFLA_INFO_DATA:
    //                            nlattr_tt[const[IFLA_INFO_DATA, int16:14], 0,
    //                            1, array[ip6gre_policy]] {
    //                              nla_len: offsetof = 0x28 (2 bytes)
    //                              nla_type: const = 0x2 (1 bytes)
    //                              NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
    //                              NLA_F_NESTED: const = 0x1 (1 bytes)
    //                              payload: array[ip6gre_policy] {
    //                                union ip6gre_policy {
    //                                  IFLA_GRE_FLOWINFO:
    //                                  nlattr_t[const[IFLA_GRE_FLOWINFO,
    //                                  int16], int32] {
    //                                    nla_len: offsetof = 0x8 (2 bytes)
    //                                    nla_type: const = 0xc (2 bytes)
    //                                    payload: int32 = 0x5fc0 (4 bytes)
    //                                    size: buffer: {} (length 0x0)
    //                                  }
    //                                }
    //                                union ip6gre_policy {
    //                                  IFLA_GRE_ENCAP_TYPE:
    //                                  nlattr_t[const[IFLA_GRE_ENCAP_TYPE,
    //                                  int16], flags[tunnel_encap_types,
    //                                  int16]] {
    //                                    nla_len: offsetof = 0x6 (2 bytes)
    //                                    nla_type: const = 0xe (2 bytes)
    //                                    payload: tunnel_encap_types = 0x2 (2
    //                                    bytes) size: buffer: {} (length 0x0)
    //                                    pad = 0x0 (2 bytes)
    //                                  }
    //                                }
    //                                union ip6gre_policy {
    //                                  IFLA_GRE_LOCAL:
    //                                  nlattr_t[const[IFLA_GRE_LOCAL, int16],
    //                                  ipv6_addr] {
    //                                    nla_len: offsetof = 0x14 (2 bytes)
    //                                    nla_type: const = 0x6 (2 bytes)
    //                                    payload: union ipv6_addr {
    //                                      private1: ipv6_addr_private[1] {
    //                                        a0: const = 0xfc (1 bytes)
    //                                        a1: const = 0x1 (1 bytes)
    //                                        a2: buffer: {00 00 00 00 00 00 00
    //                                        00 00 00 00 00 00} (length 0xd)
    //                                        a3: int8 = 0x0 (1 bytes)
    //                                      }
    //                                    }
    //                                    size: buffer: {} (length 0x0)
    //                                  }
    //                                }
    //                              }
    //                              size: buffer: {} (length 0x0)
    //                            }
    //                          }
    //                        }
    //                        size: buffer: {} (length 0x0)
    //                      }
    //                    }
    //                    union ifla_policy {
    //                      IFLA_MASTER: nlattr_t[const[IFLA_MASTER, int16],
    //                      ifindex] {
    //                        nla_len: offsetof = 0x8 (2 bytes)
    //                        nla_type: const = 0xa (2 bytes)
    //                        payload: ifindex (resource)
    //                        size: buffer: {} (length 0x0)
    //                      }
    //                    }
    //                    union ifla_policy {
    //                      IFLA_MTU: nlattr_t[const[IFLA_MTU, int16], int32] {
    //                        nla_len: offsetof = 0x8 (2 bytes)
    //                        nla_type: const = 0x4 (2 bytes)
    //                        payload: int32 = 0x4 (4 bytes)
    //                        size: buffer: {} (length 0x0)
    //                      }
    //                    }
    //                  }
    //                }
    //              }
    //            }
    //            len: len = 0x68 (8 bytes)
    //          }
    //        }
    //        vlen: const = 0x1 (8 bytes)
    //        ctrl: const = 0x0 (8 bytes)
    //        ctrllen: const = 0x0 (8 bytes)
    //        f: send_flags = 0x0 (4 bytes)
    //        pad = 0x0 (4 bytes)
    //      }
    //    }
    //    f: send_flags = 0x0 (8 bytes)
    //  ]
    *(uint64_t*)0x200000000280 = 0;
    *(uint32_t*)0x200000000288 = 0;
    *(uint64_t*)0x200000000290 = 0x2000000000c0;
    *(uint64_t*)0x2000000000c0 = 0x200000000380;
    *(uint32_t*)0x200000000380 = 0x68;
    *(uint16_t*)0x200000000384 = 0x10;
    *(uint16_t*)0x200000000386 = 0x503;
    *(uint32_t*)0x200000000388 = 0x70bd2a;
    *(uint32_t*)0x20000000038c = 0x700;
    *(uint8_t*)0x200000000390 = 0;
    *(uint8_t*)0x200000000391 = 0;
    *(uint16_t*)0x200000000392 = 0;
    *(uint32_t*)0x200000000394 = 0;
    *(uint32_t*)0x200000000398 = 0;
    *(uint32_t*)0x20000000039c = 0x3806;
    *(uint16_t*)0x2000000003a0 = 0x38;
    STORE_BY_BITMASK(uint16_t, , 0x2000000003a2, 0x12, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x2000000003a3, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x2000000003a3, 1, 7, 1);
    *(uint16_t*)0x2000000003a4 = 0xb;
    *(uint16_t*)0x2000000003a6 = 1;
    memcpy((void*)0x2000000003a8, "ip6gre\000", 7);
    *(uint16_t*)0x2000000003b0 = 0x28;
    STORE_BY_BITMASK(uint16_t, , 0x2000000003b2, 2, 0, 14);
    STORE_BY_BITMASK(uint16_t, , 0x2000000003b3, 0, 6, 1);
    STORE_BY_BITMASK(uint16_t, , 0x2000000003b3, 1, 7, 1);
    *(uint16_t*)0x2000000003b4 = 8;
    *(uint16_t*)0x2000000003b6 = 0xc;
    *(uint32_t*)0x2000000003b8 = 0x5fc0;
    *(uint16_t*)0x2000000003bc = 6;
    *(uint16_t*)0x2000000003be = 0xe;
    *(uint16_t*)0x2000000003c0 = 2;
    *(uint16_t*)0x2000000003c4 = 0x14;
    *(uint16_t*)0x2000000003c6 = 6;
    *(uint8_t*)0x2000000003c8 = 0xfc;
    *(uint8_t*)0x2000000003c9 = 1;
    memset((void*)0x2000000003ca, 0, 13);
    *(uint8_t*)0x2000000003d7 = 0;
    *(uint16_t*)0x2000000003d8 = 8;
    *(uint16_t*)0x2000000003da = 0xa;
    *(uint32_t*)0x2000000003dc = r[2];
    *(uint16_t*)0x2000000003e0 = 8;
    *(uint16_t*)0x2000000003e2 = 4;
    *(uint32_t*)0x2000000003e4 = 4;
    *(uint64_t*)0x2000000000c8 = 0x68;
    *(uint64_t*)0x200000000298 = 1;
    *(uint64_t*)0x2000000002a0 = 0;
    *(uint64_t*)0x2000000002a8 = 0;
    *(uint32_t*)0x2000000002b0 = 0;
    syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000280ul, /*f=*/0ul);
    break;
  }
}
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);
  const char* reason;
  (void)reason;
  for (procid = 0; procid < 5; procid++) {
    if (fork() == 0) {
      use_temporary_dir();
      do_sandbox_none();
    }
  }
  sleep(1000000);
  return 0;
}