Messages in this thread Patch in this message | | | Date | Fri, 18 May 2012 14:16:11 -0700 | From | Greg KH <> | Subject | [ 12/54] netem: fix possible skb leak |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Eric Dumazet <edumazet@google.com>
[ Upstream commit 116a0fc31c6c9b8fc821be5a96e5bf0b43260131 ]
skb_checksum_help(skb) can return an error, we must free skb in this case. qdisc_drop(skb, sch) can also be feeded with a NULL skb (if skb_unshare() failed), so lets use this generic helper.
Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/sched/sch_netem.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
--- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -350,10 +350,8 @@ static int netem_enqueue(struct sk_buff if (q->corrupt && q->corrupt >= get_crandom(&q->corrupt_cor)) { if (!(skb = skb_unshare(skb, GFP_ATOMIC)) || (skb->ip_summed == CHECKSUM_PARTIAL && - skb_checksum_help(skb))) { - sch->qstats.drops++; - return NET_XMIT_DROP; - } + skb_checksum_help(skb))) + return qdisc_drop(skb, sch); skb->data[net_random() % skb_headlen(skb)] ^= 1<<(net_random() % 8); }
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