// https://syzkaller.appspot.com/bug?id=126dddfb53abe3a4547711c138d313eb0c1ffad2
// 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/mount.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 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;
}

#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_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[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0x0};

void execute_one(void)
{
  intptr_t res = 0;
  if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
  }
  //  socket$alg arguments: [
  //    domain: const = 0x26 (8 bytes)
  //    type: const = 0x5 (8 bytes)
  //    proto: const = 0x0 (4 bytes)
  //  ]
  //  returns sock_alg
  res = syscall(__NR_socket, /*domain=*/0x26ul, /*type=*/5ul, /*proto=*/0);
  if (res != -1)
    r[0] = res;
  //  bind$alg arguments: [
  //    fd: sock_alg (resource)
  //    addr: ptr[in, sockaddr_alg] {
  //      sockaddr_alg {
  //        family: const = 0x26 (2 bytes)
  //        type: buffer: {61 65 61 64 00 00 00 00 00 00 00 00 00 00} (length
  //        0xe) feat: af_alg_type = 0x0 (4 bytes) mask: af_alg_type = 0x0 (4
  //        bytes) name: buffer: {70 63 72 79 70 74 28 67 65 6e 65 72 69 63 2d
  //        67 63 6d 2d 61 65 73 6e 69 29 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //        00 00 00} (length 0x40)
  //      }
  //    }
  //    addrlen: len = 0x58 (8 bytes)
  //  ]
  *(uint16_t*)0x200000000040 = 0x26;
  memcpy((void*)0x200000000042, "aead\000\000\000\000\000\000\000\000\000\000",
         14);
  *(uint32_t*)0x200000000050 = 0;
  *(uint32_t*)0x200000000054 = 0;
  memcpy((void*)0x200000000058,
         "pcrypt(generic-gcm-aesni)"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000",
         64);
  syscall(__NR_bind, /*fd=*/r[0], /*addr=*/0x200000000040ul,
          /*addrlen=*/0x58ul);
  //  socket$nl_generic arguments: [
  //    domain: const = 0x10 (8 bytes)
  //    type: const = 0x3 (8 bytes)
  //    proto: const = 0x10 (4 bytes)
  //  ]
  //  returns sock_nl_generic
  res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/0x10);
  if (res != -1)
    r[1] = res;
  //  socket$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[2] = res;
  //  syz_genetlink_get_family_id$tipc2 arguments: [
  //    name: ptr[in, buffer] {
  //      buffer: {54 49 50 43 76 32 00} (length 0x7)
  //    }
  //    fd: sock_nl_generic (resource)
  //  ]
  //  returns genl_tipc2_family_id
  memcpy((void*)0x200000000100, "TIPCv2\000", 7);
  res = -1;
  res = syz_genetlink_get_family_id(/*name=*/0x200000000100, /*fd=*/-1);
  if (res != -1)
    r[3] = res;
  //  sendmsg$TIPC_NL_BEARER_ENABLE arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //    genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy]]] {
  //      msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //      genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //        genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy]]] {
  //          iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //          genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy]] {
  //            addr: ptr[in, netlink_msg_t[genl_tipc2_family_id,
  //            genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy]] {
  //              netlink_msg_t[genl_tipc2_family_id,
  //              genlmsghdr_t[TIPC_NL_BEARER_ENABLE], tipc_nl_policy] {
  //                len: len = 0x54 (4 bytes)
  //                type: genl_tipc2_family_id (resource)
  //                flags: netlink_msg_flags = 0x1 (2 bytes)
  //                seq: int32 = 0x0 (4 bytes)
  //                pid: int32 = 0x0 (4 bytes)
  //                payload: genlmsghdr_t[TIPC_NL_BEARER_ENABLE] {
  //                  cmd: const = 0x3 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  reserved: const = 0x0 (2 bytes)
  //                }
  //                attrs: array[tipc_nl_policy] {
  //                  union tipc_nl_policy {
  //                    TIPC_NLA_BEARER: nlattr_tt[const[TIPC_NLA_BEARER,
  //                    int16:14], 0, 1, array[tipc_nl_bearer_policy]] {
  //                      nla_len: offsetof = 0x40 (2 bytes)
  //                      nla_type: const = 0x1 (1 bytes)
  //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                      NLA_F_NESTED: const = 0x1 (1 bytes)
  //                      payload: array[tipc_nl_bearer_policy] {
  //                        union tipc_nl_bearer_policy {
  //                          TIPC_NLA_BEARER_UDP_OPTS:
  //                          nlattr_t[const[TIPC_NLA_BEARER_UDP_OPTS, int16],
  //                          tipc_nl_udp_policy] {
  //                            nla_len: offsetof = 0x2c (2 bytes)
  //                            nla_type: const = 0x4 (2 bytes)
  //                            payload: tipc_nl_udp_policy {
  //                              TIPC_NLA_UDP_LOCAL:
  //                              nlattr_t[const[TIPC_NLA_UDP_LOCAL, int16],
  //                              sockaddr_tipc_udp] {
  //                                nla_len: offsetof = 0x14 (2 bytes)
  //                                nla_type: const = 0x1 (2 bytes)
  //                                payload: union sockaddr_tipc_udp {
  //                                  in: sockaddr_in {
  //                                    family: const = 0x2 (2 bytes)
  //                                    port: int16be = 0x0 (2 bytes)
  //                                    addr: union ipv4_addr {
  //                                      loopback: const = 0x7f000001 (4 bytes)
  //                                    }
  //                                    pad = 0x0 (8 bytes)
  //                                  }
  //                                }
  //                                size: buffer: {} (length 0x0)
  //                              }
  //                              TIPC_NLA_UDP_REMOTE:
  //                              nlattr_t[const[TIPC_NLA_UDP_REMOTE, int16],
  //                              sockaddr_tipc_udp] {
  //                                nla_len: offsetof = 0x14 (2 bytes)
  //                                nla_type: const = 0x2 (2 bytes)
  //                                payload: union sockaddr_tipc_udp {
  //                                  in: sockaddr_in {
  //                                    family: const = 0x2 (2 bytes)
  //                                    port: int16be = 0x0 (2 bytes)
  //                                    addr: union ipv4_addr {
  //                                      multicast2: const = 0xe0000002 (4
  //                                      bytes)
  //                                    }
  //                                    pad = 0x0 (8 bytes)
  //                                  }
  //                                }
  //                                size: buffer: {} (length 0x0)
  //                              }
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                        union tipc_nl_bearer_policy {
  //                          TIPC_NLA_BEARER_NAME:
  //                          nlattr_t[const[TIPC_NLA_BEARER_NAME, int16],
  //                          tipc_bearer_name] {
  //                            nla_len: offsetof = 0xd (2 bytes)
  //                            nla_type: const = 0x1 (2 bytes)
  //                            payload: union tipc_bearer_name {
  //                              udp: buffer: {75 64 70 3a 73 79 7a 32 00}
  //                              (length 0x9)
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x54 (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*)0x2000000001c0 = 0;
  *(uint32_t*)0x2000000001c8 = 0;
  *(uint64_t*)0x2000000001d0 = 0x200000000180;
  *(uint64_t*)0x200000000180 = 0x200000000080;
  *(uint32_t*)0x200000000080 = 0x54;
  *(uint16_t*)0x200000000084 = r[3];
  *(uint16_t*)0x200000000086 = 1;
  *(uint32_t*)0x200000000088 = 0;
  *(uint32_t*)0x20000000008c = 0;
  *(uint8_t*)0x200000000090 = 3;
  *(uint8_t*)0x200000000091 = 0;
  *(uint16_t*)0x200000000092 = 0;
  *(uint16_t*)0x200000000094 = 0x40;
  STORE_BY_BITMASK(uint16_t, , 0x200000000096, 1, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200000000097, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200000000097, 1, 7, 1);
  *(uint16_t*)0x200000000098 = 0x2c;
  *(uint16_t*)0x20000000009a = 4;
  *(uint16_t*)0x20000000009c = 0x14;
  *(uint16_t*)0x20000000009e = 1;
  *(uint16_t*)0x2000000000a0 = 2;
  *(uint16_t*)0x2000000000a2 = htobe16(0);
  *(uint32_t*)0x2000000000a4 = htobe32(0x7f000001);
  *(uint16_t*)0x2000000000b0 = 0x14;
  *(uint16_t*)0x2000000000b2 = 2;
  *(uint16_t*)0x2000000000b4 = 2;
  *(uint16_t*)0x2000000000b6 = htobe16(0);
  *(uint32_t*)0x2000000000b8 = htobe32(0xe0000002);
  *(uint16_t*)0x2000000000c4 = 0xd;
  *(uint16_t*)0x2000000000c6 = 1;
  memcpy((void*)0x2000000000c8, "udp:syz2\000", 9);
  *(uint64_t*)0x200000000188 = 0x54;
  *(uint64_t*)0x2000000001d8 = 1;
  *(uint64_t*)0x2000000001e0 = 0;
  *(uint64_t*)0x2000000001e8 = 0;
  *(uint32_t*)0x2000000001f0 = 0;
  syscall(__NR_sendmsg, /*fd=*/r[2], /*msg=*/0x2000000001c0ul, /*f=*/0ul);
  //  sendmsg$TIPC_NL_KEY_SET arguments: [
  //    fd: sock_nl_generic (resource)
  //    msg: ptr[in, msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //    genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy]]] {
  //      msghdr_netlink[netlink_msg_t[genl_tipc2_family_id,
  //      genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy]] {
  //        addr: nil
  //        addrlen: len = 0x0 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //        vec: ptr[in, iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //        genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy]]] {
  //          iovec[in, netlink_msg_t[genl_tipc2_family_id,
  //          genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy]] {
  //            addr: ptr[in, netlink_msg_t[genl_tipc2_family_id,
  //            genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy]] {
  //              netlink_msg_t[genl_tipc2_family_id,
  //              genlmsghdr_t[TIPC_NL_KEY_SET], tipc_nl_policy] {
  //                len: len = 0x58 (4 bytes)
  //                type: genl_tipc2_family_id (resource)
  //                flags: netlink_msg_flags = 0x1 (2 bytes)
  //                seq: int32 = 0x0 (4 bytes)
  //                pid: int32 = 0x0 (4 bytes)
  //                payload: genlmsghdr_t[TIPC_NL_KEY_SET] {
  //                  cmd: const = 0x17 (1 bytes)
  //                  version: const = 0x0 (1 bytes)
  //                  reserved: const = 0x0 (2 bytes)
  //                }
  //                attrs: array[tipc_nl_policy] {
  //                  union tipc_nl_policy {
  //                    TIPC_NLA_NODE: nlattr_tt[const[TIPC_NLA_NODE, int16:14],
  //                    0, 1, array[tipc_nl_node_policy]] {
  //                      nla_len: offsetof = 0x44 (2 bytes)
  //                      nla_type: const = 0x6 (1 bytes)
  //                      NLA_F_NET_BYTEORDER: const = 0x0 (0 bytes)
  //                      NLA_F_NESTED: const = 0x1 (1 bytes)
  //                      payload: array[tipc_nl_node_policy] {
  //                        union tipc_nl_node_policy {
  //                          TIPC_NLA_NODE_KEY:
  //                          nlattr_t[const[TIPC_NLA_NODE_KEY, int16],
  //                          tipc_aead_key] {
  //                            nla_len: offsetof = 0x3c (2 bytes)
  //                            nla_type: const = 0x4 (2 bytes)
  //                            payload: tipc_aead_key {
  //                              alg_name: buffer: {67 63 6d 28 61 65 73 29 00
  //                              00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  //                              00 00 00 00 00 00 00 00} (length 0x20) keylen:
  //                              len = 0x14 (4 bytes) key: buffer: {e3 de 3d 7b
  //                              4c d0 7e c3 ee 77 7d e7 74 fc 79 87 cc a4 19
  //                              89} (length 0x14)
  //                            }
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                        union tipc_nl_node_policy {
  //                          TIPC_NLA_NODE_KEY_MASTER:
  //                          nlattr_t[const[TIPC_NLA_NODE_KEY_MASTER, int16],
  //                          void] {
  //                            nla_len: offsetof = 0x4 (2 bytes)
  //                            nla_type: const = 0x5 (2 bytes)
  //                            payload: buffer: {} (length 0x0)
  //                            size: buffer: {} (length 0x0)
  //                          }
  //                        }
  //                      }
  //                      size: buffer: {} (length 0x0)
  //                    }
  //                  }
  //                }
  //              }
  //            }
  //            len: len = 0x58 (8 bytes)
  //          }
  //        }
  //        vlen: const = 0x1 (8 bytes)
  //        ctrl: const = 0x0 (8 bytes)
  //        ctrllen: const = 0x0 (8 bytes)
  //        f: send_flags = 0x4 (4 bytes)
  //        pad = 0x0 (4 bytes)
  //      }
  //    }
  //    f: send_flags = 0x4000004 (8 bytes)
  //  ]
  *(uint64_t*)0x200000000100 = 0;
  *(uint32_t*)0x200000000108 = 0;
  *(uint64_t*)0x200000000110 = 0x200000000000;
  *(uint64_t*)0x200000000000 = 0x200000000200;
  *(uint32_t*)0x200000000200 = 0x58;
  *(uint16_t*)0x200000000204 = r[3];
  *(uint16_t*)0x200000000206 = 1;
  *(uint32_t*)0x200000000208 = 0;
  *(uint32_t*)0x20000000020c = 0;
  *(uint8_t*)0x200000000210 = 0x17;
  *(uint8_t*)0x200000000211 = 0;
  *(uint16_t*)0x200000000212 = 0;
  *(uint16_t*)0x200000000214 = 0x44;
  STORE_BY_BITMASK(uint16_t, , 0x200000000216, 6, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200000000217, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200000000217, 1, 7, 1);
  *(uint16_t*)0x200000000218 = 0x3c;
  *(uint16_t*)0x20000000021a = 4;
  memcpy((void*)0x20000000021c,
         "gcm(aes)"
         "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000"
         "\000\000\000\000\000\000\000",
         32);
  *(uint32_t*)0x20000000023c = 0x14;
  memcpy((void*)0x200000000240,
         "\xe3\xde\x3d\x7b\x4c\xd0\x7e\xc3\xee\x77\x7d\xe7\x74\xfc\x79\x87\xcc"
         "\xa4\x19\x89",
         20);
  *(uint16_t*)0x200000000254 = 4;
  *(uint16_t*)0x200000000256 = 5;
  *(uint64_t*)0x200000000008 = 0x58;
  *(uint64_t*)0x200000000118 = 1;
  *(uint64_t*)0x200000000120 = 0;
  *(uint64_t*)0x200000000128 = 0;
  *(uint32_t*)0x200000000130 = 4;
  syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000100ul,
          /*f=MSG_ZEROCOPY|MSG_DONTROUTE*/ 0x4000004ul);
}
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;
  loop();
  return 0;
}