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authorJarek Poplawski <jarkao2@gmail.com>2008-10-19 23:37:47 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-19 23:37:47 -0700
commit9f3ffae0dbce491a3e9871b686342fd5aa854f05 (patch)
treedc6aaa3fba97e750a79c7717758472d954ab207c /net/sched
parent944f750227fa0beb2b440709687415621e2533a4 (diff)
downloadlinux-2.6.38-lt-ux500-9f3ffae0dbce491a3e9871b686342fd5aa854f05.tar.gz
pkt_sched: sch_generic: Fix oops in sch_teql
After these commands: # modprobe sch_teql # tc qdisc add dev eth0 root teql0 # tc qdisc del dev eth0 root we get an oops in teql_destroy() when spin_lock is taken from a null qdisc_sleeping pointer. It's because at the moment teql0 dev haven't been activated yet, and a qdisc_root_sleeping() is pointing to noop qdisc's netdev_queue with qdisc_sleeping uninitialized. This patch fixes this both for noop and noqueue netdev_queues to avoid similar problems in the future. Signed-off-by: Jarek Poplawski <jarkao2@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/sch_generic.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 7b5572d6beb..93cd30ce650 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -326,6 +326,7 @@ struct Qdisc_ops noop_qdisc_ops __read_mostly = {
static struct netdev_queue noop_netdev_queue = {
.qdisc = &noop_qdisc,
+ .qdisc_sleeping = &noop_qdisc,
};
struct Qdisc noop_qdisc = {
@@ -352,6 +353,7 @@ static struct Qdisc_ops noqueue_qdisc_ops __read_mostly = {
static struct Qdisc noqueue_qdisc;
static struct netdev_queue noqueue_netdev_queue = {
.qdisc = &noqueue_qdisc,
+ .qdisc_sleeping = &noqueue_qdisc,
};
static struct Qdisc noqueue_qdisc = {