diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/netlink.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h index 546d10586576..b5048dd1d511 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -2260,7 +2260,10 @@ static inline struct nlattr *nla_nest_start(struct sk_buff *skb, int attrtype) */ static inline int nla_nest_end(struct sk_buff *skb, struct nlattr *start) { - start->nla_len = skb_tail_pointer(skb) - (unsigned char *)start; + unsigned long diff = skb_tail_pointer(skb) - (unsigned char *)start; + + DEBUG_NET_WARN_ON_ONCE(diff > U16_MAX); + start->nla_len = diff; return skb->len; } |