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authorWillem de Bruijn <willemb@google.com>2017-12-13 22:41:06 +0300
committerDavid S. Miller <davem@davemloft.net>2017-12-15 19:30:36 +0300
commit35b99dffc3f710cafceee6c8c6ac6a98eb2cb4bf (patch)
tree200b606f78748bd6db248d625e848de6afdc3620 /net
parentd9356edc44c82b5d0bcda281476c7431a9c7bfca (diff)
downloadlinux-35b99dffc3f710cafceee6c8c6ac6a98eb2cb4bf.tar.xz
sock: free skb in skb_complete_tx_timestamp on error
skb_complete_tx_timestamp must ingest the skb it is passed. Call kfree_skb if the skb cannot be enqueued. Fixes: b245be1f4db1 ("net-timestamp: no-payload only sysctl") Fixes: 9ac25fc06375 ("net: fix socket refcounting in skb_complete_tx_timestamp()") Reported-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/skbuff.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 6b0ff396fa9d..a592ca025fc4 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4293,7 +4293,7 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
struct sock *sk = skb->sk;
if (!skb_may_tx_timestamp(sk, false))
- return;
+ goto err;
/* Take a reference to prevent skb_orphan() from freeing the socket,
* but only if the socket refcount is not zero.
@@ -4302,7 +4302,11 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
*skb_hwtstamps(skb) = *hwtstamps;
__skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND, false);
sock_put(sk);
+ return;
}
+
+err:
+ kfree_skb(skb);
}
EXPORT_SYMBOL_GPL(skb_complete_tx_timestamp);