[PATCH 5.4 30/73] net: ieee802154: stop dump llsec devkeys for monitors

From: Greg Kroah-Hartman
Date: Mon Apr 19 2021 - 09:41:12 EST


From: Alexander Aring <aahringo@xxxxxxxxxx>

[ Upstream commit 080d1a57a94d93e70f84b7a360baa351388c574f ]

This patch stops dumping llsec devkeys for monitors which we don't support
yet. Otherwise we will access llsec mib which isn't initialized for
monitors.

Signed-off-by: Alexander Aring <aahringo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210405003054.256017-10-aahringo@xxxxxxxxxx
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/ieee802154/nl802154.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 4f6777193029..66785e1eb559 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1874,6 +1874,11 @@ nl802154_dump_llsec_devkey(struct sk_buff *skb, struct netlink_callback *cb)
if (err)
return err;

+ if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) {
+ err = skb->len;
+ goto out_err;
+ }
+
if (!wpan_dev->netdev) {
err = -EINVAL;
goto out_err;
--
2.30.2