This is a note to let you know that I've just added the patch titled mpls: Send route delete notifications when router module is unloaded to the 4.9-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: mpls-send-route-delete-notifications-when-router-module-is-unloaded.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Sat Mar 18 22:03:25 CST 2017 From: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> Date: Fri, 10 Mar 2017 09:46:15 -0800 Subject: mpls: Send route delete notifications when router module is unloaded From: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> [ Upstream commit e37791ec1ad785b59022ae211f63a16189bacebf ] When the mpls_router module is unloaded, mpls routes are deleted but notifications are not sent to userspace leaving userspace caches out of sync. Add the call to mpls_notify_route in mpls_net_exit as routes are freed. Fixes: 0189197f44160 ("mpls: Basic routing support") Signed-off-by: David Ahern <dsa@xxxxxxxxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/mpls/af_mpls.c | 1 + 1 file changed, 1 insertion(+) --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -1696,6 +1696,7 @@ static void mpls_net_exit(struct net *ne for (index = 0; index < platform_labels; index++) { struct mpls_route *rt = rtnl_dereference(platform_label[index]); RCU_INIT_POINTER(platform_label[index], NULL); + mpls_notify_route(net, index, rt, NULL, NULL); mpls_rt_free(rt); } rtnl_unlock(); Patches currently in stable-queue which might be from dsa@xxxxxxxxxxxxxxxxxxx are queue-4.9/vrf-fix-use-after-free-in-vrf_xmit.patch queue-4.9/mpls-do-not-decrement-alive-counter-for-unregister-events.patch queue-4.9/mpls-send-route-delete-notifications-when-router-module-is-unloaded.patch