Patch "net-gro: reset skb->truesize in napi_reuse_skb()" has been added to the 3.14-stable tree

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This is a note to let you know that I've just added the patch titled

    net-gro: reset skb->truesize in napi_reuse_skb()

to the 3.14-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:
     net-gro-reset-skb-truesize-in-napi_reuse_skb.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From foo@baz Wed May 28 21:03:54 PDT 2014
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Thu, 3 Apr 2014 09:28:10 -0700
Subject: net-gro: reset skb->truesize in napi_reuse_skb()

From: Eric Dumazet <edumazet@xxxxxxxxxx>

[ Upstream commit e33d0ba8047b049c9262fdb1fcafb93cb52ceceb ]

Recycling skb always had been very tough...

This time it appears GRO layer can accumulate skb->truesize
adjustments made by drivers when they attach a fragment to skb.

skb_gro_receive() can only subtract from skb->truesize the used part
of a fragment.

I spotted this problem seeing TcpExtPruneCalled and
TcpExtTCPRcvCollapsed that were unexpected with a recent kernel, where
TCP receive window should be sized properly to accept traffic coming
from a driver not overshooting skb->truesize.

Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/core/dev.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4051,6 +4051,7 @@ static void napi_reuse_skb(struct napi_s
 	skb->vlan_tci = 0;
 	skb->dev = napi->dev;
 	skb->skb_iif = 0;
+	skb->truesize = SKB_TRUESIZE(skb_end_offset(skb));
 
 	napi->skb = skb;
 }


Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx are

queue-3.14/net-gro-make-sure-skb-cb-initial-content-has-not.patch
queue-3.14/ipv6-limit-mtu-to-65575-bytes.patch
queue-3.14/tcp_cubic-fix-the-range-of-delayed_ack.patch
queue-3.14/ipv6-gro-fix-checksum_complete-support.patch
queue-3.14/ipv4-ip_tunnels-disable-cache-for-nbma-gre-tunnels.patch
queue-3.14/net-gro-reset-skb-truesize-in-napi_reuse_skb.patch
queue-3.14/net-sched-lock-imbalance-in-hhf-qdisc.patch
queue-3.14/net-filter-x86-fix-jit-address-randomization.patch
queue-3.14/ip_tunnel-set-network-header-properly-for.patch
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