This is a note to let you know that I've just added the patch titled w1: don't leak refcount on slave attach failure in w1_attach_slave_device() to the 4.4-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: w1-don-t-leak-refcount-on-slave-attach-failure-in-w1_attach_slave_device.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@xxxxxxxxxxxxxxx> know about it. >From d2ce4ea1a0b0162e5d2d7e7942ab6f5cc2063d5a Mon Sep 17 00:00:00 2001 From: "Maciej S. Szmigiero" <mail@xxxxxxxxxxxxxxxxxxxxx> Date: Sat, 21 Jan 2017 23:50:18 +0100 Subject: w1: don't leak refcount on slave attach failure in w1_attach_slave_device() From: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx> commit d2ce4ea1a0b0162e5d2d7e7942ab6f5cc2063d5a upstream. Near the beginning of w1_attach_slave_device() we increment a w1 master reference count. Later, when we are going to exit this function without actually attaching a slave device (due to failure of __w1_attach_slave_device()) we need to decrement this reference count back. Signed-off-by: Maciej S. Szmigiero <mail@xxxxxxxxxxxxxxxxxxxxx> Fixes: 9fcbbac5ded489 ("w1: process w1 netlink commands in w1_process thread") Cc: Evgeniy Polyakov <zbr@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/w1/w1.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -763,6 +763,7 @@ int w1_attach_slave_device(struct w1_mas dev_err(&dev->dev, "%s: Attaching %s failed.\n", __func__, sl->name); w1_family_put(sl->family); + atomic_dec(&sl->master->refcnt); kfree(sl); return err; } Patches currently in stable-queue which might be from mail@xxxxxxxxxxxxxxxxxxxxx are queue-4.4/w1-don-t-leak-refcount-on-slave-attach-failure-in-w1_attach_slave_device.patch queue-4.4/w1-ds2490-usb-transfer-buffers-need-to-be-dmaable.patch