This is a note to let you know that I've just added the patch titled

mac80211: bail out from prep_connection() if a reconfig is ongoing

to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: mac80211-bail-out-from-prep_connection-if-a-reconfig-is-ongoing.patch and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From foo@baz Tue Apr 10 10:31:53 CEST 2018

From: Luca Coelho luciano.coelho@intel.com Date: Tue, 2 May 2017 17:56:21 +0300 Subject: mac80211: bail out from prep_connection() if a reconfig is ongoing

From: Luca Coelho luciano.coelho@intel.com

[ Upstream commit f8860ce836f2d502b07ef99559707fe55d90f5bc ]

If ieee80211_hw_restart() is called during authentication, the authentication process will continue, causing the driver to be called in a wrong state. This ultimately causes an oops in the iwlwifi driver (at least).

This fixes bugzilla 195299 partly.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195299 Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mac80211/mlme.c | 4 ++++ 1 file changed, 4 insertions(+)

--- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4326,6 +4326,10 @@ static int ieee80211_prep_connection(str if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) return -EINVAL;

+ /* If a reconfig is happening, bail out */ + if (local->in_reconfig) + return -EBUSY; + if (assoc) { rcu_read_lock(); have_sta = sta_info_get(sdata, cbss->bssid);

Patches currently in stable-queue which might be from luciano.coelho@intel.com are

queue-4.4/mac80211-bail-out-from-prep_connection-if-a-reconfig-is-ongoing.patch