On Mon, Mar 16, 2020 at 02:45:12PM +0100, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
The patch below does not apply to the 4.4-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 8e8ce08198de193e3d21d42e96945216e3d9ac7f Mon Sep 17 00:00:00 2001
From: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Date: Sun, 16 Feb 2020 13:02:06 +0100
Subject: [PATCH] batman-adv: Don't schedule OGM for disabled interface
A transmission scheduling for an interface which is currently dropped by
batadv_iv_ogm_iface_disable could still be in progress. The B.A.T.M.A.N. V
is simply cancelling the workqueue item in an synchronous way but this is
not possible with B.A.T.M.A.N. IV because the OGM submissions are
intertwined.
Instead it has to stop submitting the OGM when it detect that the buffer
pointer is set to NULL.
Reported-by: syzbot+a98f2016f40b9cd3818a@xxxxxxxxxxxxxxxxxxxxxxxxx
Reported-by: syzbot+ac36b6a33c28a491e929@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: c6c8fea29769 ("net: Add batman-adv meshing protocol")
Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
Cc: Hillf Danton <hdanton@xxxxxxxx>
Signed-off-by: Simon Wunderlich <sw@xxxxxxxxxxxxxxxxxx>
Adjusted context and queued up for 4.4.
--
Thanks,
Sasha
