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| author | Adam Thomson <Adam.Thomson.Opensource@diasemi.com> | 2018-04-23 17:10:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-25 15:17:48 +0300 |
| commit | 1ac3eef74a61f40639d0fa835fd968f825b09135 (patch) | |
| tree | ad1997c37414affaa46cc1ae97e7262085feebad /drivers/power | |
| parent | 91dabc54073324006d5eaba483679c47b6eb93a8 (diff) | |
| download | linux-1ac3eef74a61f40639d0fa835fd968f825b09135.tar.xz | |
power: supply: Add error checking of psy desc during registration
Currently there's no error checking of this parameter in the
registration function and it's blindly added to psy class and
subsequently used as is. For example if this is NULL the call
to psy_register_thermal() will try to dereference the pointer
thus causing a kernel dump.
This commit updates the registration code to add some basic
checks on the desc pointer validity, name, and presence of
properties.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/power_supply_core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index feac7b066e6c..a7984af1dc66 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -849,6 +849,9 @@ __power_supply_register(struct device *parent, pr_warn("%s: Expected proper parent device for '%s'\n", __func__, desc->name); + if (!desc || !desc->name || !desc->properties || !desc->num_properties) + return ERR_PTR(-EINVAL); + psy = kzalloc(sizeof(*psy), GFP_KERNEL); if (!psy) return ERR_PTR(-ENOMEM); |