diff options
| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2017-08-29 21:23:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-13 14:09:44 -0700 |
| commit | 1875ed81c2b747877a6c868d6aa25738ca77d27d (patch) | |
| tree | 51776c010592e57f3cc8cc6633c506e9228cfac8 /drivers | |
| parent | f3584d55a8d8d0cff5a423e81162e069693c1914 (diff) | |
driver core: bus: Fix a potential double free
commit 0f9b011d3321ca1079c7a46c18cb1956fbdb7bcb upstream.
The .release function of driver_ktype is 'driver_release()'.
This function frees the container_of this kobject.
So, this memory must not be freed explicitly in the error handling path of
'bus_add_driver()'. Otherwise a double free will occur.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/base/bus.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 500592486e88..0346e46e2871 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -737,7 +737,7 @@ int bus_add_driver(struct device_driver *drv) out_unregister: kobject_put(&priv->kobj); - kfree(drv->p); + /* drv->p is freed in driver_release() */ drv->p = NULL; out_put_bus: bus_put(bus); |