diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2017-09-06 14:44:36 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-09-07 20:02:39 -0700 |
| commit | ca2c1418efe9f7fe37aa1f355efdf4eb293673ce (patch) | |
| tree | e7a5bc57ec2c26469e03fb850b4aa61af43bbe38 /include | |
| parent | 5c25f30c93fdc5bf25e62101aeaae7a4f9b421b3 (diff) | |
udp: drop head states only when all skb references are gone
After commit 0ddf3fb2c43d ("udp: preserve skb->dst if required
for IP options processing") we clear the skb head state as soon
as the skb carrying them is first processed.
Since the same skb can be processed several times when MSG_PEEK
is used, we can end up lacking the required head states, and
eventually oopsing.
Fix this clearing the skb head state only when processing the
last skb reference.
Reported-by: Eric Dumazet <edumazet@google.com>
Fixes: 0ddf3fb2c43d ("udp: preserve skb->dst if required for IP options processing")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/skbuff.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index f751f3b93039..72299ef00061 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -958,7 +958,7 @@ void kfree_skb(struct sk_buff *skb); void kfree_skb_list(struct sk_buff *segs); void skb_tx_error(struct sk_buff *skb); void consume_skb(struct sk_buff *skb); -void consume_stateless_skb(struct sk_buff *skb); +void __consume_stateless_skb(struct sk_buff *skb); void __kfree_skb(struct sk_buff *skb); extern struct kmem_cache *skbuff_head_cache; |