Commit 16de4c6a authored by Bartosz Golaszewski's avatar Bartosz Golaszewski Committed by Philipp Zabel
Browse files

reset: gpio: suppress bind attributes in sysfs 



This is a special device that's created dynamically and is supposed to
stay in memory forever. We also currently don't have a devlink between
it and the actual reset consumer. Suppress sysfs bind attributes so that
user-space can't unbind the device because - as of now - it will cause a
use-after-free splat from any user that puts the reset control handle.

Fixes: cee544a4 ("reset: gpio: Add GPIO-based reset controller")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent b3d85083

drivers/reset/reset-gpio.c

+1 −0
Original line number Diff line number Diff line
@@ -111,6 +111,7 @@ static struct auxiliary_driver reset_gpio_driver = { 
	.id_table	= reset_gpio_ids,

	.driver	= {

		.name = "reset-gpio",

		.suppress_bind_attrs = true,

	},

};

module_auxiliary_driver(reset_gpio_driver);