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| author |   WANG Cong <xiyou.wangcong@gmail.com> | 2014-09-15 14:06:48 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-09-15 17:49:42 -0400 |
| commit | 2f9a220eff18d31cf82b92e74d5bbc8a3d7043d8 (patch) | |
| tree | cd78da77913f51baf790fb6cbf8573b4dcd45808 /net | |
| parent | net_sched: fix an allocation bug in tcindex_set_parms() (diff) | |
| download | linux-dev-2f9a220eff18d31cf82b92e74d5bbc8a3d7043d8.tar.xz linux-dev-2f9a220eff18d31cf82b92e74d5bbc8a3d7043d8.zip | |
net_sched: fix suspicious RCU usage in tcindex_classify()
This patch fixes the following kernel warning:
[ 44.805900] [ INFO: suspicious RCU usage. ]
[ 44.808946] 3.17.0-rc4+ #610 Not tainted
[ 44.811831] -------------------------------
[ 44.814873] net/sched/cls_tcindex.c:84 suspicious rcu_dereference_check() usage!
Fixes: commit 331b72922c5f58d48fd ("net: sched: RCU cls_tcindex")
Cc: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sched/cls_tcindex.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c index a02ca7298385..b93974c4570c 100644 --- a/net/sched/cls_tcindex.c +++ b/net/sched/cls_tcindex.c @@ -81,7 +81,7 @@ tcindex_lookup(struct tcindex_data *p, u16 key) static int tcindex_classify(struct sk_buff *skb, const struct tcf_proto *tp, struct tcf_result *res) { - struct tcindex_data *p = rcu_dereference(tp->root); + struct tcindex_data *p = rcu_dereference_bh(tp->root); struct tcindex_filter_result *f; int key = (skb->tc_index & p->mask) >> p->shift; |