Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 098/153] w1: dont leak refcount on slave attach failure in w1_attach_slave_device() | Date | Fri, 10 Mar 2017 10:08:51 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
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@maciej.szmigiero.name> Fixes: 9fcbbac5ded489 ("w1: process w1 netlink commands in w1_process thread") Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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; }
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