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authorPatrick McHardy <kaber@trash.net>2007-03-28 01:04:24 +0400
committerDavid S. Miller <davem@davemloft.net>2007-03-28 01:04:24 +0400
commitc38c83cb705a41e30a99545ae2314c00e3b9bf1c (patch)
tree1d91f9303661f75c2104dd6db1d78f55445fc22c /net/sched/sch_hfsc.c
parent9b2f7bcf0efea98666da56073448647e2b373b67 (diff)
downloadlinux-c38c83cb705a41e30a99545ae2314c00e3b9bf1c.tar.xz
[NET_SCHED]: sch_htb/sch_hfsc: fix oops in qlen_notify
During both HTB and HFSC class deletion the class is removed from the class hash before calling qdisc_tree_decrease_qlen. This makes the ->get operation in qdisc_tree_decrease_qlen fail, so it passes a NULL pointer to ->qlen_notify, causing an oops. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_hfsc.c')
-rw-r--r--net/sched/sch_hfsc.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index 396deb71480f..407c6fb1ba14 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -1184,10 +1184,12 @@ hfsc_delete_class(struct Qdisc *sch, unsigned long arg)
sch_tree_lock(sch);
- list_del(&cl->hlist);
list_del(&cl->siblings);
hfsc_adjust_levels(cl->cl_parent);
+
hfsc_purge_queue(sch, cl);
+ list_del(&cl->hlist);
+
if (--cl->refcnt == 0)
hfsc_destroy_class(sch, cl);