From: Gustavo A. R. Silva Date: Tue, 25 Jan 2022 17:52:45 +0000 (-0600) Subject: power: supply: cros_usbpd: Use struct_size() helper in kzalloc() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=441d38c60fbe5b416e562853aa3041c7dcaf3af7;p=linux.git power: supply: cros_usbpd: Use struct_size() helper in kzalloc() Make use of the struct_size() helper instead of an open-coded version, in order to avoid any potential type mistakes or integer overflows that, in the worst scenario, could lead to heap overflows. Also, address the following sparse warnings: drivers/power/supply/cros_usbpd-charger.c:107:23: warning: using sizeof on a flexible structure Link: https://github.com/KSPP/linux/issues/174 Signed-off-by: Gustavo A. R. Silva Signed-off-by: Sebastian Reichel --- diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c index d89e08efd2ad0..cadb6a0c2cc7e 100644 --- a/drivers/power/supply/cros_usbpd-charger.c +++ b/drivers/power/supply/cros_usbpd-charger.c @@ -104,7 +104,7 @@ static int cros_usbpd_charger_ec_command(struct charger_data *charger, struct cros_ec_command *msg; int ret; - msg = kzalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL); + msg = kzalloc(struct_size(msg, data, max(outsize, insize)), GFP_KERNEL); if (!msg) return -ENOMEM;