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net: fix socket refcounting in skb_complete_tx_timestamp()

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am: ec4d8692b7

Change-Id: Idc05607ffe99175575d7f07e3138e2f4496a5110
This commit is contained in:
Eric Dumazet
2017-03-22 11:30:11 +00:00
committed by android-build-merger
parent 50aba0e7c5 ec4d8692b7
commit 9cf061bb47
1 changed files with 8 additions and 7 deletions
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15
net/core/skbuff.c
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@@ -3678,13 +3678,14 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
if (!skb_may_tx_timestamp(sk, false))
return;
/* take a reference to prevent skb_orphan() from freeing the socket */
sock_hold(sk);
*skb_hwtstamps(skb) = *hwtstamps;
__skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND);
sock_put(sk);
/* Take a reference to prevent skb_orphan() from freeing the socket,
* but only if the socket refcount is not zero.
*/
if (likely(atomic_inc_not_zero(&sk->sk_refcnt))) {
*skb_hwtstamps(skb) = *hwtstamps;
__skb_complete_tx_timestamp(skb, sk, SCM_TSTAMP_SND);
sock_put(sk);
}
}
EXPORT_SYMBOL_GPL(skb_complete_tx_timestamp);