netdev - [PATCH net-next] net: gso_skb is now a list, needs a proper destructor

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Message-ID: <1409701903.26422.26.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 02 Sep 2014 16:51:43 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: [PATCH net-next] net: gso_skb is now a list, needs a proper
 destructor

From: Eric Dumazet <edumazet@...gle.com>

gso_skb can now be a list of skbs.

Qdisc destructors have to take care of it, or we can leak skbs.

Fixes: ce93718fb7cd ("net: Don't keep around original SKB when we software segment GSO frames.")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/sched/sch_generic.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 5b261e91bdbd..19696ebe9ebc 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -621,7 +621,7 @@ void qdisc_reset(struct Qdisc *qdisc)
 		ops->reset(qdisc);
 
 	if (qdisc->gso_skb) {
-		kfree_skb(qdisc->gso_skb);
+		kfree_skb_list(qdisc->gso_skb);
 		qdisc->gso_skb = NULL;
 		qdisc->q.qlen = 0;
 	}
@@ -657,7 +657,7 @@ void qdisc_destroy(struct Qdisc *qdisc)
 	module_put(ops->owner);
 	dev_put(qdisc_dev(qdisc));
 
-	kfree_skb(qdisc->gso_skb);
+	kfree_skb_list(qdisc->gso_skb);
 	/*
 	 * gen_estimator est_timer() might access qdisc->q.lock,
 	 * wait a RCU grace period before freeing qdisc.


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