// https://syzkaller.appspot.com/bug?id=e7c8b5465e53b8c65bca5e522ddcb03a41203996
// autogenerated by syzkaller (https://github.com/google/syzkaller)

#define _GNU_SOURCE

#include <arpa/inet.h>
#include <endian.h>
#include <errno.h>
#include <net/if.h>
#include <netinet/in.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/syscall.h>
#include <sys/types.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>

#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))))

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;
}

const int kInitNetNsFd = 201;

static long syz_init_net_socket(volatile long domain, volatile long type,
                                volatile long proto)
{
  return syscall(__NR_socket, domain, type, proto);
}

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;
}

uint64_t r[4] = {0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0x0};

int main(void)
{
  syscall(__NR_mmap, 0x1ffff000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x32ul, -1, 0ul);
  syscall(__NR_mmap, 0x21000000ul, 0x1000ul, 0ul, 0x32ul, -1, 0ul);
  intptr_t res = 0;
  res = -1;
  res = syz_init_net_socket(0x10, 3, 0x10);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000040, "nl802154\000", 9);
  res = -1;
  res = syz_genetlink_get_family_id(0x20000040, -1);
  if (res != -1)
    r[1] = res;
  *(uint64_t*)0x20000100 = 0;
  *(uint32_t*)0x20000108 = 0;
  *(uint64_t*)0x20000110 = 0x200000c0;
  *(uint64_t*)0x200000c0 = 0x20000000;
  *(uint32_t*)0x20000000 = 0x30;
  *(uint16_t*)0x20000004 = r[1];
  *(uint16_t*)0x20000006 = 1;
  *(uint32_t*)0x20000008 = 0;
  *(uint32_t*)0x2000000c = 0xfffffffd;
  *(uint8_t*)0x20000010 = 7;
  *(uint8_t*)0x20000011 = 0;
  *(uint16_t*)0x20000012 = 0;
  *(uint16_t*)0x20000014 = 0xa;
  *(uint16_t*)0x20000016 = 4;
  memcpy((void*)0x20000018, "wpan3\000", 6);
  *(uint16_t*)0x20000020 = 8;
  *(uint16_t*)0x20000022 = 1;
  *(uint32_t*)0x20000024 = 0;
  *(uint16_t*)0x20000028 = 8;
  *(uint16_t*)0x2000002a = 5;
  *(uint32_t*)0x2000002c = 1;
  *(uint64_t*)0x200000c8 = 0x30;
  *(uint64_t*)0x20000118 = 1;
  *(uint64_t*)0x20000120 = 0;
  *(uint64_t*)0x20000128 = 0;
  *(uint32_t*)0x20000130 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000100ul, 0ul);
  res = -1;
  res = syz_init_net_socket(0x10, 3, 0x10);
  if (res != -1)
    r[2] = res;
  memcpy((void*)0x20000040, "nl802154\000", 9);
  res = -1;
  res = syz_genetlink_get_family_id(0x20000040, -1);
  if (res != -1)
    r[3] = res;
  *(uint64_t*)0x20000240 = 0;
  *(uint32_t*)0x20000248 = 0;
  *(uint64_t*)0x20000250 = 0x20000200;
  *(uint64_t*)0x20000200 = 0x200002c0;
  *(uint32_t*)0x200002c0 = 0x1e0;
  *(uint16_t*)0x200002c4 = r[3];
  *(uint16_t*)0x200002c6 = 1;
  *(uint32_t*)0x200002c8 = 0;
  *(uint32_t*)0x200002cc = 0;
  *(uint8_t*)0x200002d0 = 0x1e;
  *(uint8_t*)0x200002d1 = 0;
  *(uint16_t*)0x200002d2 = 0;
  *(uint16_t*)0x200002d4 = 0xac;
  STORE_BY_BITMASK(uint16_t, , 0x200002d6, 0x24, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002d7, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002d7, 1, 7, 1);
  *(uint16_t*)0x200002d8 = 0xa0;
  STORE_BY_BITMASK(uint16_t, , 0x200002da, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002db, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002db, 1, 7, 1);
  *(uint16_t*)0x200002dc = 8;
  *(uint16_t*)0x200002de = 1;
  *(uint32_t*)0x200002e0 = 3;
  *(uint16_t*)0x200002e4 = 0x40;
  STORE_BY_BITMASK(uint16_t, , 0x200002e6, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200002e7, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200002e7, 1, 7, 1);
  *(uint16_t*)0x200002e8 = 0xc;
  *(uint16_t*)0x200002ea = 4;
  *(uint64_t*)0x200002ec = 0xaaaaaaaaaaaa0302;
  *(uint16_t*)0x200002f4 = 6;
  *(uint16_t*)0x200002f6 = 1;
  *(uint16_t*)0x200002f8 = 2;
  *(uint16_t*)0x200002fc = 8;
  *(uint16_t*)0x200002fe = 2;
  *(uint32_t*)0x20000300 = 2;
  *(uint16_t*)0x20000304 = 6;
  *(uint16_t*)0x20000306 = 1;
  *(uint16_t*)0x20000308 = 1;
  *(uint16_t*)0x2000030c = 6;
  *(uint16_t*)0x2000030e = 3;
  *(uint16_t*)0x20000310 = 0xaaa0;
  *(uint16_t*)0x20000314 = 6;
  *(uint16_t*)0x20000316 = 1;
  *(uint16_t*)0x20000318 = -1;
  *(uint16_t*)0x2000031c = 6;
  *(uint16_t*)0x2000031e = 1;
  *(uint16_t*)0x20000320 = 2;
  *(uint16_t*)0x20000324 = 0x4c;
  STORE_BY_BITMASK(uint16_t, , 0x20000326, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000327, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000327, 1, 7, 1);
  *(uint16_t*)0x20000328 = 8;
  *(uint16_t*)0x2000032a = 2;
  *(uint32_t*)0x2000032c = 1;
  *(uint16_t*)0x20000330 = 8;
  *(uint16_t*)0x20000332 = 2;
  *(uint32_t*)0x20000334 = 2;
  *(uint16_t*)0x20000338 = 0xc;
  *(uint16_t*)0x2000033a = 4;
  *(uint64_t*)0x2000033c = 0xaaaaaaaaaaaa0102;
  *(uint16_t*)0x20000344 = 0xc;
  *(uint16_t*)0x20000346 = 4;
  *(uint64_t*)0x20000348 = 0xaaaaaaaaaaaa0002;
  *(uint16_t*)0x20000350 = 0xc;
  *(uint16_t*)0x20000352 = 4;
  *(uint64_t*)0x20000354 = 0;
  *(uint16_t*)0x2000035c = 0xc;
  *(uint16_t*)0x2000035e = 4;
  *(uint64_t*)0x20000360 = 0xaaaaaaaaaaaa0002;
  *(uint16_t*)0x20000368 = 8;
  *(uint16_t*)0x2000036a = 2;
  *(uint32_t*)0x2000036c = 2;
  *(uint16_t*)0x20000370 = 8;
  *(uint16_t*)0x20000372 = 1;
  *(uint32_t*)0x20000374 = 1;
  *(uint16_t*)0x20000378 = 8;
  STORE_BY_BITMASK(uint16_t, , 0x2000037a, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000037b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000037b, 1, 7, 1);
  *(uint16_t*)0x2000037c = 4;
  STORE_BY_BITMASK(uint16_t, , 0x2000037e, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000037f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000037f, 1, 7, 1);
  *(uint16_t*)0x20000380 = 0x2c;
  STORE_BY_BITMASK(uint16_t, , 0x20000382, 0x24, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x20000383, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x20000383, 1, 7, 1);
  *(uint16_t*)0x20000384 = 8;
  *(uint16_t*)0x20000386 = 1;
  *(uint32_t*)0x20000388 = 7;
  *(uint16_t*)0x2000038c = 8;
  *(uint16_t*)0x2000038e = 1;
  *(uint32_t*)0x20000390 = 6;
  *(uint16_t*)0x20000394 = 8;
  *(uint16_t*)0x20000396 = 1;
  *(uint32_t*)0x20000398 = 0xbdbc;
  *(uint16_t*)0x2000039c = 8;
  *(uint16_t*)0x2000039e = 1;
  *(uint32_t*)0x200003a0 = 0x400;
  *(uint16_t*)0x200003a4 = 8;
  *(uint16_t*)0x200003a6 = 1;
  *(uint32_t*)0x200003a8 = 0x1f;
  *(uint16_t*)0x200003ac = 0xc;
  *(uint16_t*)0x200003ae = 6;
  *(uint64_t*)0x200003b0 = 0;
  *(uint16_t*)0x200003b8 = 0xc;
  *(uint16_t*)0x200003ba = 6;
  *(uint64_t*)0x200003bc = 2;
  *(uint16_t*)0x200003c4 = 8;
  *(uint16_t*)0x200003c6 = 3;
  *(uint32_t*)0x200003c8 = 0;
  *(uint16_t*)0x200003cc = 0x20;
  STORE_BY_BITMASK(uint16_t, , 0x200003ce, 0x24, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200003cf, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200003cf, 1, 7, 1);
  *(uint16_t*)0x200003d0 = 8;
  *(uint16_t*)0x200003d2 = 1;
  *(uint32_t*)0x200003d4 = 0x8000;
  *(uint16_t*)0x200003d8 = 0xc;
  *(uint16_t*)0x200003da = 2;
  *(uint64_t*)0x200003dc = 0xaaaaaaaaaaaa0002;
  *(uint16_t*)0x200003e4 = 8;
  *(uint16_t*)0x200003e6 = 1;
  *(uint32_t*)0x200003e8 = 9;
  *(uint16_t*)0x200003ec = 0xb4;
  STORE_BY_BITMASK(uint16_t, , 0x200003ee, 0x24, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200003ef, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200003ef, 1, 7, 1);
  *(uint16_t*)0x200003f0 = 0x40;
  STORE_BY_BITMASK(uint16_t, , 0x200003f2, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x200003f3, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x200003f3, 1, 7, 1);
  *(uint16_t*)0x200003f4 = 0xc;
  *(uint16_t*)0x200003f6 = 5;
  *(uint64_t*)0x200003f8 = 0x2b53;
  *(uint16_t*)0x20000400 = 8;
  *(uint16_t*)0x20000402 = 1;
  *(uint32_t*)0x20000404 = 2;
  *(uint16_t*)0x20000408 = 0x18;
  STORE_BY_BITMASK(uint16_t, , 0x2000040a, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000040b, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000040b, 1, 7, 1);
  *(uint16_t*)0x2000040c = 6;
  *(uint16_t*)0x2000040e = 1;
  *(uint16_t*)0x20000410 = 1;
  *(uint16_t*)0x20000414 = 0xc;
  *(uint16_t*)0x20000416 = 4;
  *(uint64_t*)0x20000418 = 0xaaaaaaaaaaaa0202;
  *(uint16_t*)0x20000420 = 5;
  *(uint16_t*)0x20000422 = 2;
  *(uint8_t*)0x20000424 = 0;
  *(uint16_t*)0x20000428 = 5;
  *(uint16_t*)0x2000042a = 2;
  *(uint8_t*)0x2000042c = 0;
  *(uint16_t*)0x20000430 = 0xc;
  *(uint16_t*)0x20000432 = 2;
  *(uint64_t*)0x20000434 = 0xaaaaaaaaaaaa0102;
  *(uint16_t*)0x2000043c = 0x34;
  STORE_BY_BITMASK(uint16_t, , 0x2000043e, 3, 0, 14);
  STORE_BY_BITMASK(uint16_t, , 0x2000043f, 0, 6, 1);
  STORE_BY_BITMASK(uint16_t, , 0x2000043f, 1, 7, 1);
  *(uint16_t*)0x20000440 = 0xc;
  *(uint16_t*)0x20000442 = 5;
  *(uint64_t*)0x20000444 = 0x3620054e;
  *(uint16_t*)0x2000044c = 8;
  *(uint16_t*)0x2000044e = 1;
  *(uint32_t*)0x20000450 = 2;
  *(uint16_t*)0x20000454 = 8;
  *(uint16_t*)0x20000456 = 4;
  *(uint32_t*)0x20000458 = 0xfffffff8;
  *(uint16_t*)0x2000045c = 0xc;
  *(uint16_t*)0x2000045e = 5;
  *(uint64_t*)0x20000460 = 4;
  *(uint16_t*)0x20000468 = 5;
  *(uint16_t*)0x2000046a = 2;
  *(uint8_t*)0x2000046c = 0;
  *(uint16_t*)0x20000470 = 0xc;
  *(uint16_t*)0x20000472 = 2;
  *(uint64_t*)0x20000474 = 0xaaaaaaaaaaaa0202;
  *(uint16_t*)0x2000047c = 0xc;
  *(uint16_t*)0x2000047e = 2;
  *(uint64_t*)0x20000480 = 0;
  *(uint16_t*)0x20000488 = 8;
  *(uint16_t*)0x2000048a = 1;
  *(uint32_t*)0x2000048c = 0xffffff88;
  *(uint16_t*)0x20000490 = 8;
  *(uint16_t*)0x20000492 = 1;
  *(uint32_t*)0x20000494 = 4;
  *(uint16_t*)0x20000498 = 8;
  *(uint16_t*)0x2000049a = 1;
  *(uint32_t*)0x2000049c = 2;
  *(uint64_t*)0x20000208 = 0x1e0;
  *(uint64_t*)0x20000258 = 1;
  *(uint64_t*)0x20000260 = 0;
  *(uint64_t*)0x20000268 = 0;
  *(uint32_t*)0x20000270 = 0x20048815;
  syscall(__NR_sendmsg, r[2], 0x20000240ul, 0x40800ul);
  return 0;
}