This is a note to let you know that I've just added the patch titled net: dsa: Do not destroy invalid network devices 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: net-dsa-do-not-destroy-invalid-network-devices.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 Tue Feb 14 17:03:08 PST 2017 From: Florian Fainelli <f.fainelli@xxxxxxxxx> Date: Tue, 7 Feb 2017 23:10:13 -0800 Subject: net: dsa: Do not destroy invalid network devices From: Florian Fainelli <f.fainelli@xxxxxxxxx> [ Upstream commit 382e1eea2d983cd2343482c6a638f497bb44a636 ] dsa_slave_create() can fail, and dsa_user_port_unapply() will properly check for the network device not being NULL before attempting to destroy it. We were not setting the slave network device as NULL if dsa_slave_create() failed, so we would later on be calling dsa_slave_destroy() on a now free'd and unitialized network device, causing crashes in dsa_slave_destroy(). Fixes: 83c0afaec7b7 ("net: dsa: Add new binding implementation") Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/dsa/dsa2.c | 1 + 1 file changed, 1 insertion(+) --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -273,6 +273,7 @@ static int dsa_user_port_apply(struct de if (err) { dev_warn(ds->dev, "Failed to create slave %d: %d\n", index, err); + ds->ports[index].netdev = NULL; return err; } Patches currently in stable-queue which might be from f.fainelli@xxxxxxxxx are queue-4.9/net-dsa-do-not-destroy-invalid-network-devices.patch