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-rw-r--r--include/linux/skbuff.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f1e49a32880d..e5095d75abba 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3063,7 +3063,10 @@ static inline void skb_unset_mac_header(struct sk_buff *skb)
static inline void skb_reset_mac_header(struct sk_buff *skb)
{
- skb->mac_header = skb->data - skb->head;
+ long offset = skb->data - skb->head;
+
+ DEBUG_NET_WARN_ON_ONCE(offset != (typeof(skb->mac_header))offset);
+ skb->mac_header = offset;
}
static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)