This is a note to let you know that I've just added the patch titled net: ieee802154: forbid monitor for add llsec dev to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-ieee802154-forbid-monitor-for-add-llsec-dev.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f9204bece579c29411d1896d381dfbc876ca28b5 Author: Alexander Aring <aahringo@xxxxxxxxxx> Date: Sun Apr 4 20:30:46 2021 -0400 net: ieee802154: forbid monitor for add llsec dev [ Upstream commit 5303f956b05a2886ff42890908156afaec0f95ac ] This patch forbids to add llsec dev for monitor interfaces 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/20210405003054.256017-8-aahringo@xxxxxxxxxx Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index 97074180c2e5..797888b4b2ce 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -1784,6 +1784,9 @@ static int nl802154_add_llsec_dev(struct sk_buff *skb, struct genl_info *info) struct wpan_dev *wpan_dev = dev->ieee802154_ptr; struct ieee802154_llsec_device dev_desc; + if (wpan_dev->iftype == NL802154_IFTYPE_MONITOR) + return -EOPNOTSUPP; + if (ieee802154_llsec_parse_device(info->attrs[NL802154_ATTR_SEC_DEVICE], &dev_desc) < 0) return -EINVAL;