| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 121/130] act_pedit: check binding before calling tcf_hash_release() | Date | Thu, 27 Aug 2015 15:11:52 -0700 |
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3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
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From: WANG Cong <xiyou.wangcong@gmail.com>
commit 5175f7106cc55a1bcf97bf7d5ba0900017ebcef8 upstream.
When we share an action within a filter, the bind refcnt should increase, therefore we should not call tcf_hash_release().
Fixes: 1a29321ed045 ("net_sched: act: Dont increment refcnt on replace") Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Cong Wang <cwang@twopensource.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- net/sched/act_pedit.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c index 59649d5..4298e8d 100644 --- a/net/sched/act_pedit.c +++ b/net/sched/act_pedit.c @@ -68,13 +68,12 @@ static int tcf_pedit_init(struct net *net, struct nlattr *nla, } ret = ACT_P_CREATED; } else { - p = to_pedit(a); - tcf_hash_release(a, bind); if (bind) return 0; + tcf_hash_release(a, bind); if (!ovr) return -EEXIST; - + p = to_pedit(a); if (p->tcfp_nkeys && p->tcfp_nkeys != parm->nkeys) { keys = kmalloc(ksize, GFP_KERNEL); if (keys == NULL) -- 1.9.1
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