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[PKT_SCHED] sch_htb: Use hlist_del_init().

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Otherwise we can hit paths that (legally) do multiple deletes on the
same node and OOPS with the HLIST poison values there instead of
NULL.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2006-11-07 14:54:46 -08:00 committed by David S. Miller
parent 9e950efa20
commit da33e3eb48
1 changed files with 2 additions and 4 deletions
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6
net/sched/sch_htb.c
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@ -1284,8 +1284,7 @@ static void htb_destroy_class(struct Qdisc *sch, struct htb_class *cl)
struct htb_class, sibling));
/* note: this delete may happen twice (see htb_delete) */
if (!hlist_unhashed(&cl->hlist))
hlist_del(&cl->hlist);
hlist_del_init(&cl->hlist);
list_del(&cl->sibling);
if (cl->prio_activity)
@ -1333,8 +1332,7 @@ static int htb_delete(struct Qdisc *sch, unsigned long arg)
sch_tree_lock(sch);
/* delete from hash and active; remainder in destroy_class */
if (!hlist_unhashed(&cl->hlist))
hlist_del(&cl->hlist);
hlist_del_init(&cl->hlist);
if (cl->prio_activity)
htb_deactivate(q, cl);