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pkt_sched: Fix qdisc_create on stab error handling 

If qdisc_get_stab returns error in qdisc_create there is skipped qdisc
ops->destroy, which is necessary because it's after ops->init at the
moment, so memory leaks are quite probable.

Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jarek Poplawski 2009-09-15 23:42:05 -07:00 committed by David S. Miller
parent 926e61b7c4
commit 7c64b9f3f5
1 changed files with 2 additions and 2 deletions
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4
net/sched/sch_api.c
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@ -809,7 +809,7 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
stab = qdisc_get_stab(tca[TCA_STAB]);
if (IS_ERR(stab)) {
err = PTR_ERR(stab);
goto err_out3;
goto err_out4;
}
sch->stab = stab;
}
@ -838,7 +838,6 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
return sch;
}
err_out3:
qdisc_put_stab(sch->stab);
dev_put(dev);
kfree((char *) sch - sch->padded);
err_out2:
@ -852,6 +851,7 @@ err_out4:
* Any broken qdiscs that would require a ops->reset() here?
* The qdisc was never in action so it shouldn't be necessary.
*/
qdisc_put_stab(sch->stab);
if (ops->destroy)
ops->destroy(sch);
goto err_out3;