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authorHiroaki SHIMODA <shimoda.hiroaki@gmail.com>2012-08-06 05:45:48 +0000
committerDavid S. Miller <davem@davemloft.net>2012-08-06 13:30:01 -0700
commit47fd92f5a76eb3f5b407773766e7d7fa1a179419 (patch)
treefbebbe0628917989117a97ddf5737ceda816bccf /net/sched/act_ipt.c
parent9871f1ad677d95ffeca80e2c21b70af9bfc9cc91 (diff)
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_ipt.c')
-rw-r--r--net/sched/act_ipt.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 60e281ad0f07..58fb3c7aab9e 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -185,7 +185,12 @@ err3:
err2:
kfree(tname);
err1:
- kfree(pc);
+ if (ret == ACT_P_CREATED) {
+ if (est)
+ gen_kill_estimator(&pc->tcfc_bstats,
+ &pc->tcfc_rate_est);
+ kfree_rcu(pc, tcfc_rcu);
+ }
return err;
}