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authorHiroaki SHIMODA <shimoda.hiroaki@gmail.com>2012-08-06 09:45:48 +0400
committerDavid S. Miller <davem@davemloft.net>2012-08-07 00:30:01 +0400
commit47fd92f5a76eb3f5b407773766e7d7fa1a179419 (patch)
treefbebbe0628917989117a97ddf5737ceda816bccf /net/sched/act_pedit.c
parent9871f1ad677d95ffeca80e2c21b70af9bfc9cc91 (diff)
downloadlinux-47fd92f5a76eb3f5b407773766e7d7fa1a179419.tar.xz
net_sched: act: Delete estimator in error path.
Some action modules free struct tcf_common in their error path while estimator is still active. This results in est_timer() dereference freed memory. Add gen_kill_estimator() in ipt, pedit and simple action. Signed-off-by: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/act_pedit.c')
-rw-r--r--net/sched/act_pedit.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 26aa2f6ce257..45c53ab067a6 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -74,7 +74,10 @@ static int tcf_pedit_init(struct nlattr *nla, struct nlattr *est,
p = to_pedit(pc);
keys = kmalloc(ksize, GFP_KERNEL);
if (keys == NULL) {
- kfree(pc);
+ if (est)
+ gen_kill_estimator(&pc->tcfc_bstats,
+ &pc->tcfc_rate_est);
+ kfree_rcu(pc, tcfc_rcu);
return -ENOMEM;
}
ret = ACT_P_CREATED;