Messages in this thread | | | From | Roman Gushchin <> | Subject | Re: [PATHC] net: napi_reuse_skb() should check pfmemalloc | Date | Thu, 23 Oct 2014 17:49:30 +0400 |
| |
Signed-off-by: Roman Gushchin <klamm@yandex-team.ru>
-- @klamm
23.10.2014, 17:30, "Eric Dumazet" <eric.dumazet@gmail.com>: > From: Eric Dumazet <edumazet@google.com> > > Do not reuse skb if it was pfmemalloc tainted, otherwise > future frame might be dropped anyway. > > Signed-off-by: Eric Dumazet <edumazet@google.com> > --- > net/core/dev.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/net/core/dev.c b/net/core/dev.c > index b793e3521a36..945bbd001359 100644 > --- a/net/core/dev.c > +++ b/net/core/dev.c > @@ -4157,6 +4157,10 @@ EXPORT_SYMBOL(napi_gro_receive); > > static void napi_reuse_skb(struct napi_struct *napi, struct sk_buff *skb) > { > + if (unlikely(skb->pfmemalloc)) { > + consume_skb(skb); > + return; > + } > __skb_pull(skb, skb_headlen(skb)); > /* restore the reserve we had after netdev_alloc_skb_ip_align() */ > skb_reserve(skb, NET_SKB_PAD + NET_IP_ALIGN - skb_headroom(skb)); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |