// https://syzkaller.appspot.com/bug?id=2805ab846734eafd3fbb3145291fcbec7311e378
// 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>

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;
}

uint64_t r[7] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff,
                 0xffffffffffffffff};

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 = syscall(__NR_socket, 0x10ul, 3ul, 0x10);
  if (res != -1)
    r[0] = res;
  memcpy((void*)0x20000200, "nl80211\000", 8);
  res = -1;
  res = syz_genetlink_get_family_id(0x20000200, -1);
  if (res != -1)
    r[1] = res;
  memcpy((void*)0x20000700, "wlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  res = syscall(__NR_ioctl, r[0], 0x8933, 0x20000700ul);
  if (res != -1)
    r[2] = *(uint32_t*)0x20000710;
  *(uint64_t*)0x20000340 = 0;
  *(uint32_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0x20000300;
  *(uint64_t*)0x20000300 = 0x20000240;
  *(uint32_t*)0x20000240 = 0x24;
  *(uint16_t*)0x20000244 = r[1];
  *(uint16_t*)0x20000246 = 5;
  *(uint32_t*)0x20000248 = 0;
  *(uint32_t*)0x2000024c = 0;
  *(uint8_t*)0x20000250 = 6;
  *(uint8_t*)0x20000251 = 0;
  *(uint16_t*)0x20000252 = 0;
  *(uint16_t*)0x20000254 = 8;
  *(uint16_t*)0x20000256 = 3;
  *(uint32_t*)0x20000258 = r[2];
  *(uint16_t*)0x2000025c = 8;
  *(uint16_t*)0x2000025e = 5;
  *(uint32_t*)0x20000260 = 3;
  *(uint64_t*)0x20000308 = 0x24;
  *(uint64_t*)0x20000358 = 1;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint32_t*)0x20000370 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000340ul, 0ul);
  *(uint64_t*)0x20000340 = 0;
  *(uint32_t*)0x20000348 = 0;
  *(uint64_t*)0x20000350 = 0x20000300;
  *(uint64_t*)0x20000300 = 0x20000380;
  memcpy((void*)0x20000380, "\x00\x03\x00\x00", 4);
  *(uint16_t*)0x20000384 = r[1];
  memcpy((void*)0x20000386,
         "\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x08\x00\x03"
         "\x00",
         18);
  *(uint32_t*)0x20000398 = r[2];
  memcpy(
      (void*)0x2000039c,
      "\x28\x00\x0e\x00\x80\x00\x00\x00\xff\xff\xff\xff\xff\xff\x08\x02\x11\x00"
      "\x00\x01\x4c\x88\xe8\xeb\x7e\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
      "\x64\x00\xff\xff\x08\x00\x26\x00\x6c\x09\x00\x00\x08\x00\x0c\x00\x64\x00"
      "\x00\x00\x08\x00\x0d\x00\x00\x00\x00\x00\x0a\x00\x34\x00\x02\x02\x02\x02"
      "\x02\x02\x00\x00\x08\x00\x35\x00\x00\x00\x00\x00\x90\x02\x0f\x00\x04\x4e"
      "\x79\xc1\x99\xe8\x3b\xed\x43\x6d\x9b\x18\xd6\x35\xd7\xd6\xe8\x00\x08\x00"
      "\x00\x88\x54\x41\x3f\x64\xd1\x7b\x8d\x7a\x90\x41\xea\x1a\xa6\xcb\x32\x8e"
      "\x4e\xae\x74\xed\xc1\xe0\xad\x5b\x56\x00\x31\x9a\x0c\xf9\x6d\x64\xa3\x28"
      "\xee\xca\xfa\xc1\x12\xed\x3e\xc8\x84\xa1\x53\x1d\xfd\xf1\x7a\x1c\xbe\x07"
      "\xe1\x3a\xd5\x79\x11\xd1\x2d\x26\x9b\x02\x2c\xcf\x8f\xf9\xaf\x66\xb4\x1d"
      "\x84\xa1\xf4\x7c\xd1\x6e\xce\xac\xcf\x5e\xf9\x15\x9b\x14\xc6\xd0\x25\xae"
      "\xa1\x2d\xba\xe5\x03\xb9\x48\x22\xfd\x6a\x1c\x7b\xbb\x4c\x9d\x1e\xff\xa4"
      "\x6a\x99\xc6\x02\x5a\xba\x12\x6a\xb4\xd7\x43\x3b\x72\x2b\x8c\xf4\x0f\xaa"
      "\xb9\x1f\x78\x6c\x32\x81\x3e\xc3\x1c\xbb\xec\xee\xeb\xe4\x4f\xb3\x52\x7d"
      "\x98\x35\x6b\x7c\xef\x74\x53\xa6\xd0\xbc\x7c\x65\x73\xe1\xe9\x31\x55\x7e"
      "\x85\x94\x57\x2f\xe5\x20\xd0\xb3\x90\x3b\xd7\xe8\x5e\xc4\xab\xc6\x4e\x96"
      "\x4b\x56\x55\xb2\x40\xa4\xe6\x02\x0c\x7a\x9f\x72\xb1\x6a\xf0\xfb\xcd\xcb"
      "\x35\x4e\x91\xc6\x9c\x1a\x6b\xa7\x57\x64\x92\x63\xf8\xb0\xbc\x97\xce\x3f"
      "\xfc\x1f\xff\xa6\x04\x7b\xb4\xa1\x8a\xad\x45\xa0\xfa\x6f\x1c\xf4\x40\x8c"
      "\x8d\xf7\x9b\xce\xdd\xae\xff\xb0\x50\x1f\x61\x5f\xeb\x70\x80\x1a\xac\x79"
      "\xa1\xb3\xb7\x40\x01\x06\x6b\xfe\x7b\x65\x2c\x5b\xa9\xe6\xdf\x56\x06\x10"
      "\xaf\xa7\xb2\xb0\xae\x89\xd8\x16\x7e\xf9\x5c\xab\x5f\x20\x73\x20\x67\x98"
      "\x08\x9f\x72\x5a\x5d\x9f\x20\x7a\x14\x09\x90\x61\x12\xda\x7e\x52\xb9\x0d"
      "\x5e\xa3\x45\x37\xd6\xd6\xce\x24\xa2\xdb\x63\x14\x41\xbe\x1e\x6d\x63\x23"
      "\xd6\x16\x55\xd4\x15\x6b\x50\x6f\xdb\xe3\xf6\xc9\x81\x35\x28\xa9\x50\xdf"
      "\x8a\x4c\x2a\x6a\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00",
      467);
  *(uint64_t*)0x20000308 = 0x300;
  *(uint64_t*)0x20000358 = 1;
  *(uint64_t*)0x20000360 = 0;
  *(uint64_t*)0x20000368 = 0;
  *(uint32_t*)0x20000370 = 0;
  syscall(__NR_sendmsg, r[0], 0x20000340ul, 0ul);
  res = syscall(__NR_socket, 0x10ul, 3ul, 0x10);
  if (res != -1)
    r[3] = res;
  res = syscall(__NR_socket, 0x10ul, 3ul, 0x10);
  if (res != -1)
    r[4] = res;
  memcpy((void*)0x20000700, "wlan0\000\000\000\000\000\000\000\000\000\000\000",
         16);
  res = syscall(__NR_ioctl, r[4], 0x8933, 0x20000700ul);
  if (res != -1)
    r[5] = *(uint32_t*)0x20000710;
  memcpy((void*)0x20000200, "nl80211\000", 8);
  res = -1;
  res = syz_genetlink_get_family_id(0x20000200, -1);
  if (res != -1)
    r[6] = res;
  *(uint64_t*)0x20000140 = 0;
  *(uint32_t*)0x20000148 = 0;
  *(uint64_t*)0x20000150 = 0x20000100;
  *(uint64_t*)0x20000100 = 0x20000740;
  memcpy((void*)0x20000740, "8\000\000\000", 4);
  *(uint16_t*)0x20000744 = r[6];
  memcpy((void*)0x20000746,
         "\x01\x00\xb3\x00\x00\x00\x08\x00\x00\x00\x19\x8f\x00\x00\x08\x00\x03"
         "\x00",
         18);
  *(uint32_t*)0x20000758 = r[5];
  memcpy((void*)0x2000075c, "\x05\x00\x24", 3);
  *(uint64_t*)0x20000108 = 0x38;
  *(uint64_t*)0x20000158 = 1;
  *(uint64_t*)0x20000160 = 0;
  *(uint64_t*)0x20000168 = 0;
  *(uint32_t*)0x20000170 = 0;
  syscall(__NR_sendmsg, r[3], 0x20000140ul, 0ul);
  return 0;
}