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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2017-08-29 21:23:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-31 18:57:30 +0200 |
| commit | 0f9b011d3321ca1079c7a46c18cb1956fbdb7bcb (patch) | |
| tree | 9d80c487fe9e60ce59a0553ca30485a6775db046 /drivers/base/bus.c | |
| parent | 7521621e600aeefe5ffcc1f90ae26a42fc20c452 (diff) | |
| download | linux-0f9b011d3321ca1079c7a46c18cb1956fbdb7bcb.tar.bz2 | |
driver core: bus: Fix a potential double free
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>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/bus.c')
| -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 e162c9a789ba..22a64fd3309b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -698,7 +698,7 @@ 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); |