// https://syzkaller.appspot.com/bug?id=3f6ec6c41ed712601490c6990bbf5516201254f0
// 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 <signal.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

#include <linux/genetlink.h>
#include <linux/if_addr.h>
#include <linux/if_link.h>
#include <linux/in6.h>
#include <linux/neighbour.h>
#include <linux/net.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/veth.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 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_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 long syz_genetlink_get_family_id(volatile long name,
                                        volatile long sock_arg)
{
  int fd = sock_arg;
  if (fd < 0) {
    fd = socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC);
    if (fd == -1) {
      return -1;
    }
  }
  struct nlmsg nlmsg_tmp;
  int ret = netlink_query_family_id(&nlmsg_tmp, fd, (char*)name, false);
  if ((int)sock_arg < 0)
    close(fd);
  if (ret < 0) {
    return -1;
  }
  return ret;
}

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 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, 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  mmap$auto arguments: [
  //    addr: intptr = 0x0 (8 bytes)
  //    len: intptr = 0x2020009 (8 bytes)
  //    prot: intptr = 0x3 (8 bytes)
  //    flags: intptr = 0xeb1 (8 bytes)
  //    fd: fd (resource)
  //    off: intptr = 0x8000 (8 bytes)
  //  ]
  syscall(__NR_mmap, /*addr=*/0ul, /*len=*/0x2020009ul, /*prot=*/3ul,
          /*flags=*/0xeb1ul, /*fd=*/0xfffffffa, /*off=*/0x8000ul);
  //  socket arguments: [
  //    domain: socket_domain = 0x10 (8 bytes)
  //    type: socket_type = 0x2 (8 bytes)
  //    proto: int32 = 0x0 (4 bytes)
  //  ]
  //  returns sock
  syscall(__NR_socket, /*domain=AF_NETLINK*/ 0x10ul, /*type=SOCK_DGRAM*/ 2ul,
          /*proto=*/0);
  //  sendmsg$auto_HSR_C_GET_NODE_STATUS arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_hsr_family_id$auto,
  //    genlmsghdr_t[HSR_C_GET_NODE_STATUS], hsr_genl_policy_hsr_netlink$auto]]]
  //    {
  //      msghdr_netlink[netlink_msg_t[genl_hsr_family_id$auto,
  //      genlmsghdr_t[HSR_C_GET_NODE_STATUS],
  //      hsr_genl_policy_hsr_netlink$auto]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_hsr_family_id$auto,
  //        genlmsghdr_t[HSR_C_GET_NODE_STATUS],
  //        hsr_genl_policy_hsr_netlink$auto]]] {
  //          iovec[in, netlink_msg_t[genl_hsr_family_id$auto,
  //          genlmsghdr_t[HSR_C_GET_NODE_STATUS],
  //          hsr_genl_policy_hsr_netlink$auto]] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {68 00 00 00} (length 0x4)
  //                }
  //                union ANYUNION {
  //                  ANYRES16: ANYRES16 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {00 02 26 bd 70 00 fe db df 25 03 00 00
  //                  00 08 00 03 00 04 02 00 00 06 00 07 00 00 80 00 00 08 00
  //                  02 00} (length 0x22)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {0a 00 05 00 00 00 00 00 00 00 00 00 0a
  //                  00 01 00 00 00 00 00 00 00 00 00 0a 00 01 00 00 00 00 00
  //                  00 00 00 00 06 00 07 00 01 00 00 00 08 00 02 00} (length
  //                  0x30)
  //                }
  //                union ANYUNION {
  //                  ANYRES32: ANYRES32 (resource)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: 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 = 0x40080 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x40090 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000200 = 0;
  *(uint32_t*)0x200000000208 = 0;
  *(uint64_t*)0x200000000210 = 0x2000000001c0;
  *(uint64_t*)0x2000000001c0 = 0x200000000140;
  memcpy((void*)0x200000000140, "h\000\000\000", 4);
  *(uint16_t*)0x200000000144 = 0;
  memcpy((void*)0x200000000146,
         "\x00\x02\x26\xbd\x70\x00\xfe\xdb\xdf\x25\x03\x00\x00\x00\x08\x00\x03"
         "\x00\x04\x02\x00\x00\x06\x00\x07\x00\x00\x80\x00\x00\x08\x00\x02\x00",
         34);
  *(uint32_t*)0x200000000168 = 0;
  memcpy((void*)0x20000000016c,
         "\x0a\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x01\x00\x00"
         "\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x01\x00\x00\x00\x00\x00\x00\x00"
         "\x00\x00\x06\x00\x07\x00\x01\x00\x00\x00\x08\x00\x02\x00",
         48);
  *(uint32_t*)0x20000000019c = 0;
  *(uint64_t*)0x2000000001c8 = 0x68;
  *(uint64_t*)0x200000000218 = 1;
  *(uint64_t*)0x200000000220 = 0;
  *(uint64_t*)0x200000000228 = 0;
  *(uint32_t*)0x200000000230 = 0x40080;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000200ul,
          /*f=MSG_BATCH|MSG_PROBE|MSG_EOR*/ 0x40090ul);
  //  sendmsg$auto_NL80211_CMD_GET_REG arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_nl80211_family_id$auto,
  //    genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]]] {
  //      msghdr_netlink[netlink_msg_t[genl_nl80211_family_id$auto,
  //      genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_nl80211_family_id$auto,
  //        genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]]] {
  //          iovec[in, netlink_msg_t[genl_nl80211_family_id$auto,
  //          genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]] {
  //            addr: nil
  //            len: len = 0x1ac (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x4004810 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x800 (8 bytes)
  //  ]
  *(uint64_t*)0x2000000000c0 = 0;
  *(uint32_t*)0x2000000000c8 = 0;
  *(uint64_t*)0x2000000000d0 = 0x200000000200;
  *(uint64_t*)0x200000000200 = 0;
  *(uint64_t*)0x200000000208 = 0x1ac;
  *(uint64_t*)0x2000000000d8 = 1;
  *(uint64_t*)0x2000000000e0 = 0;
  *(uint64_t*)0x2000000000e8 = 0;
  *(uint32_t*)0x2000000000f0 = 0x4004810;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x2000000000c0ul,
          /*f=MSG_CONFIRM*/ 0x800ul);
  //  sendmsg$auto_NL80211_CMD_GET_REG arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_nl80211_family_id$auto,
  //    genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]]] {
  //      msghdr_netlink[netlink_msg_t[genl_nl80211_family_id$auto,
  //      genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_nl80211_family_id$auto,
  //        genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]]] {
  //          iovec[in, netlink_msg_t[genl_nl80211_family_id$auto,
  //          genlmsghdr_t[NL80211_CMD_GET_REG], nl80211_policy_nl80211$auto]] {
  //            addr: ptr[inout, array[ANYUNION]] {
  //              array[ANYUNION] {
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {72 01 00 00} (length 0x4)
  //                }
  //                union ANYUNION {
  //                  ANYBLOB: buffer: {13} (length 0x1)
  //                }
  //              }
  //            }
  //            len: len = 0x1ac (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 = 0x4004 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000240 = 0;
  *(uint32_t*)0x200000000248 = 0;
  *(uint64_t*)0x200000000250 = 0x200000000200;
  *(uint64_t*)0x200000000200 = 0x200000000180;
  memcpy((void*)0x200000000180, "\x72\x01\x00\x00", 4);
  memset((void*)0x200000000184, 19, 1);
  *(uint64_t*)0x200000000208 = 0x1ac;
  *(uint64_t*)0x200000000258 = 1;
  *(uint64_t*)0x200000000260 = 0;
  *(uint64_t*)0x200000000268 = 0;
  *(uint32_t*)0x200000000270 = 0;
  syscall(__NR_sendmsg, /*fd=*/(intptr_t)-1, /*msg=*/0x200000000240ul,
          /*f=MSG_NOSIGNAL|MSG_DONTROUTE*/ 0x4004ul);
  //  sendmmsg$auto arguments: [
  //    fd: fd (resource)
  //    mmsg: ptr[inout, mmsghdr$auto] {
  //      mmsghdr$auto {
  //        msg_hdr: user_msghdr$auto {
  //          msg_name: nil
  //          msg_namelen: int32 = 0x2 (4 bytes)
  //          pad = 0x0 (4 bytes)
  //          msg_iov: ptr[inout, iovec$auto] {
  //            iovec$auto {
  //              iov_base: nil
  //              iov_len: intptr = 0xc4 (8 bytes)
  //            }
  //          }
  //          msg_iovlen: intptr = 0x1 (8 bytes)
  //          msg_control: nil
  //          msg_controllen: intptr = 0x0 (8 bytes)
  //          msg_flags: int32 = 0xb (4 bytes)
  //          pad = 0x0 (4 bytes)
  //        }
  //        msg_len: int32 = 0x7 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    vlen: int32 = 0x3 (4 bytes)
  //    flags: int32 = 0x0 (4 bytes)
  //  ]
  *(uint64_t*)0x200000000080 = 0;
  *(uint32_t*)0x200000000088 = 2;
  *(uint64_t*)0x200000000090 = 0x2000000002c0;
  *(uint64_t*)0x2000000002c0 = 0;
  *(uint64_t*)0x2000000002c8 = 0xc4;
  *(uint64_t*)0x200000000098 = 1;
  *(uint64_t*)0x2000000000a0 = 0;
  *(uint64_t*)0x2000000000a8 = 0;
  *(uint32_t*)0x2000000000b0 = 0xb;
  *(uint32_t*)0x2000000000b8 = 7;
  syscall(__NR_sendmmsg, /*fd=*/3, /*mmsg=*/0x200000000080ul, /*vlen=*/3,
          /*flags=*/0);
  //  socket$nl_generic arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x10 (4 bytes)
  //  ]
  //  returns sock_nl_generic
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10);
  if (res != -1)
    r[0] = res;
  //  syz_genetlink_get_family_id$auto_nfsd arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {6e 66 73 64 00} (length 0x5)
  //    }
  //    fd: sock_nl_generic (resource)
  //  ]
  //  returns genl_nfsd_family_id$auto
  memcpy((void*)0x200000000340, "nfsd\000", 5);
  res = -1;
  res = syz_genetlink_get_family_id(/*name=*/0x200000000340, /*fd=*/-1);
  if (res != -1)
    r[1] = res;
  //  sendmsg$auto_NFSD_CMD_THREADS_SET arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_nfsd_family_id$auto,
  //    genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //    nfsd_threads_set_nl_policy_netlink$auto]]] {
  //      msghdr_netlink[netlink_msg_t[genl_nfsd_family_id$auto,
  //      genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //      nfsd_threads_set_nl_policy_netlink$auto]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_nfsd_family_id$auto,
  //        genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //        nfsd_threads_set_nl_policy_netlink$auto]]] {
  //          iovec[in, netlink_msg_t[genl_nfsd_family_id$auto,
  //          genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //          nfsd_threads_set_nl_policy_netlink$auto]] {
  //            addr: ptr[in, netlink_msg_t[genl_nfsd_family_id$auto,
  //            genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //            nfsd_threads_set_nl_policy_netlink$auto]] {
  //              netlink_msg_t[genl_nfsd_family_id$auto,
  //              genlmsghdr_t[NFSD_CMD_THREADS_SET],
  //              nfsd_threads_set_nl_policy_netlink$auto] {
  //                len: len = 0xa8 (4 bytes)
  //                type: genl_nfsd_family_id$auto (resource)
  //                flags: netlink_msg_flags = 0x1 (2 bytes)
  //                seq: int32 = 0x70bd2c (4 bytes)
  //                pid: int32 = 0x25dfdbfd (4 bytes)
  //                payload: genlmsghdr_t[NFSD_CMD_THREADS_SET] {
  //                  cmd: const = 0x2 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  reserved: const = 0x0 (2 bytes)
  //                }
  //                attrs: array[nfsd_threads_set_nl_policy_netlink$auto] {
  //                  union nfsd_threads_set_nl_policy_netlink$auto {
  //                    NFSD_A_SERVER_SCOPE: nlattr_t[const[NFSD_A_SERVER_SCOPE,
  //                    int16], string] {
  //                      nla_len: offsetof = 0x81 (2 bytes)
  //                      nla_type: const = 0x4 (2 bytes)
  //                      payload: buffer: {6e 66 73 66 00 d8 ef e4 2d 13 2b 72
  //                      f3 0c 54 31 5a a7 4a 5b 81 07 cf 2d df 90 1f 8f c8 13
  //                      65 e2 52 37 44 83 32 6a ce 7d a3 56 b7 a1 6f 5c e6 13
  //                      bc 0c e3 ae b8 7e d3 d2 2b 4a 27 c3 ec c9 0c 70 c8 61
  //                      be fe 60 a7 a9 41 4b 44 64 27 a0 01 f6 13 79 e8 ca f4
  //                      51 9e 03 2a 5d da 1e 11 74 e2 d5 75 77 2b 93 fc 04 6c
  //                      d3 a6 74 86 6b 80 d9 14 73 ec e2 48 c0 3d 28 f9 39 8a
  //                      63 a7 85 99 87} (length 0x7d) size: buffer: {} (length
  //                      0x0)
  //                    }
  //                  }
  //                  union nfsd_threads_set_nl_policy_netlink$auto {
  //                    NFSD_A_SERVER_LEASETIME:
  //                    nlattr_t[const[NFSD_A_SERVER_LEASETIME, int16], int32] {
  //                      nla_len: offsetof = 0x8 (2 bytes)
  //                      nla_type: const = 0x3 (2 bytes)
  //                      payload: int32 = 0x85 (4 bytes)
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                  union nfsd_threads_set_nl_policy_netlink$auto {
  //                    NFSD_A_SERVER_THREADS:
  //                    nlattr_t[const[NFSD_A_SERVER_THREADS, int16], int32] {
  //                      nla_len: offsetof = 0x8 (2 bytes)
  //                      nla_type: const = 0x1 (2 bytes)
  //                      payload: int32 = 0x2 (4 bytes)
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0xa8 (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 = 0x4000 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000480 = 0;
  *(uint32_t*)0x200000000488 = 0;
  *(uint64_t*)0x200000000490 = 0x200000000440;
  *(uint64_t*)0x200000000440 = 0x200000000200;
  *(uint32_t*)0x200000000200 = 0xa8;
  *(uint16_t*)0x200000000204 = r[1];
  *(uint16_t*)0x200000000206 = 1;
  *(uint32_t*)0x200000000208 = 0x70bd2c;
  *(uint32_t*)0x20000000020c = 0x25dfdbfd;
  *(uint8_t*)0x200000000210 = 2;
  *(uint8_t*)0x200000000211 = 0;
  *(uint16_t*)0x200000000212 = 0;
  *(uint16_t*)0x200000000214 = 0x81;
  *(uint16_t*)0x200000000216 = 4;
  memcpy((void*)0x200000000218,
         "nfsf\000\330\357\344-\023+r\363\fT1Z\247J[\201\a\317-"
         "\337\220\037\217\310\023e\342R7D\2032j\316}"
         "\243V\267\241o\\\346\023\274\f\343\256\270~\323\322+"
         "J\'\303\354\311\fp\310a\276\376`"
         "\247\251AKDd\'\240\001\366\023y\350\312\364Q\236\003*]"
         "\332\036\021t\342\325uw+"
         "\223\374\004l\323\246t\206k\200\331\024s\354\342H\300=("
         "\3719\212c\247\205\231\207",
         125);
  *(uint16_t*)0x200000000298 = 8;
  *(uint16_t*)0x20000000029a = 3;
  *(uint32_t*)0x20000000029c = 0x85;
  *(uint16_t*)0x2000000002a0 = 8;
  *(uint16_t*)0x2000000002a2 = 1;
  *(uint32_t*)0x2000000002a4 = 2;
  *(uint64_t*)0x200000000448 = 0xa8;
  *(uint64_t*)0x200000000498 = 1;
  *(uint64_t*)0x2000000004a0 = 0;
  *(uint64_t*)0x2000000004a8 = 0;
  *(uint32_t*)0x2000000004b0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000480ul,
          /*f=MSG_NOSIGNAL*/ 0x4000ul);
}
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 < 4; procid++) {
    if (fork() == 0) {
      loop();
    }
  }
  sleep(1000000);
  return 0;
}