From: <gregkh@linuxfoundation.org>
To: willemb@google.com, davem@davemloft.net, edumazet@google.com,
gregkh@linuxfoundation.org, richardcochran@gmail.com
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "sock: free skb in skb_complete_tx_timestamp on error" has been added to the 4.14-stable tree
Date: Sun, 31 Dec 2017 11:14:47 +0100 [thread overview]
Message-ID: <151471528717277@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
sock: free skb in skb_complete_tx_timestamp on error
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sock-free-skb-in-skb_complete_tx_timestamp-on-error.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From foo@baz Sun Dec 31 11:12:48 CET 2017
From: Willem de Bruijn <willemb@google.com>
Date: Wed, 13 Dec 2017 14:41:06 -0500
Subject: sock: free skb in skb_complete_tx_timestamp on error
From: Willem de Bruijn <willemb@google.com>
[ Upstream commit 35b99dffc3f710cafceee6c8c6ac6a98eb2cb4bf ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/core/skbuff.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -4296,7 +4296,7 @@ void skb_complete_tx_timestamp(struct sk
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.
@@ -4305,7 +4305,11 @@ void skb_complete_tx_timestamp(struct sk
*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);
Patches currently in stable-queue which might be from willemb@google.com are
queue-4.14/skbuff-skb_copy_ubufs-must-release-uarg-even-without-user-frags.patch
queue-4.14/sock-free-skb-in-skb_complete_tx_timestamp-on-error.patch
queue-4.14/skbuff-orphan-frags-before-zerocopy-clone.patch
queue-4.14/skbuff-in-skb_copy_ubufs-unclone-before-releasing-zerocopy.patch
reply other threads:[~2017-12-31 10:16 UTC|newest]
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