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

net: dsa: check master device before put

to the 4.13-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: net-dsa-check-master-device-before-put.patch and it can be found in the queue-4.13 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 Wed Nov 15 17:25:34 CET 2017

From: Vivien Didelot vivien.didelot@savoirfairelinux.com Date: Tue, 24 Oct 2017 16:37:19 -0400 Subject: net: dsa: check master device before put

From: Vivien Didelot vivien.didelot@savoirfairelinux.com

[ Upstream commit 3eb8feeb1708c7dbfd2e97df92a2a407c116606e ]

In the case of pdata, the dsa_cpu_parse function calls dev_put() before making sure it isn't NULL. Fix this.

Fixes: 71e0bbde0d88 ("net: dsa: Add support for platform data") Signed-off-by: Vivien Didelot vivien.didelot@savoirfairelinux.com Reviewed-by: Florian Fainelli f.fainelli@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/dsa/dsa2.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -496,14 +496,15 @@ static int dsa_cpu_parse(struct dsa_port if (!ethernet) return -EINVAL; ethernet_dev = of_find_net_device_by_node(ethernet); + if (!ethernet_dev) + return -EPROBE_DEFER; } else { ethernet_dev = dsa_dev_to_net_device(ds->cd->netdev[index]); + if (!ethernet_dev) + return -EPROBE_DEFER; dev_put(ethernet_dev); }

- if (!ethernet_dev) - return -EPROBE_DEFER; - if (!dst->cpu_dp) { dst->cpu_dp = port; dst->cpu_dp->netdev = ethernet_dev;

Patches currently in stable-queue which might be from vivien.didelot@savoirfairelinux.com are

queue-4.13/net-dsa-check-master-device-before-put.patch