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authorThomas Graf <tgraf@redhat.com>2011-12-22 02:05:07 (GMT)
committerDavid S. Miller <davem@davemloft.net>2011-12-23 03:34:56 (GMT)
commit7838f2ce36b6ab5c13ef20b1857e3bbd567f1759 (patch)
tree4a84e53445817547adb299b25c54e613f76a8980
parenta13861a28b90541aa207532d237e7a940f1b1c7b (diff)
downloadlinux-7838f2ce36b6ab5c13ef20b1857e3bbd567f1759.tar.xz
mqprio: Avoid panic if no options are provided
Userspace may not provide TCA_OPTIONS, in fact tc currently does so not do so if no arguments are specified on the command line. Return EINVAL instead of panicing. Signed-off-by: Thomas Graf <tgraf@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/sched/sch_mqprio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/sch_mqprio.c b/net/sched/sch_mqprio.c
index f88256c..28de430 100644
--- a/net/sched/sch_mqprio.c
+++ b/net/sched/sch_mqprio.c
@@ -107,7 +107,7 @@ static int mqprio_init(struct Qdisc *sch, struct nlattr *opt)
if (!netif_is_multiqueue(dev))
return -EOPNOTSUPP;
- if (nla_len(opt) < sizeof(*qopt))
+ if (!opt || nla_len(opt) < sizeof(*qopt))
return -EINVAL;
qopt = nla_data(opt);