gpio: cdev: fix missed label sanitizing in debounce_setup()

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When adding sanitization of the label, the path through
edge_detector_setup() that leads to debounce_setup() was overlooked.
A request taking this path does not allocate a new label and the
request label is freed twice when the request is released, resulting
in memory corruption.

Add label sanitization to debounce_setup().

Cc: stable@vger.kernel.org
Fixes: b34490879b ("gpio: cdev: sanitize the label before requesting the interrupt")
Signed-off-by: Kent Gibson <warthog618@gmail.com>
[Bartosz: rebased on top of the fix for empty GPIO labels]
Co-developed-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

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Kent Gibson 2024-04-04 11:33:28 +02:00 • committed by Bartosz Golaszewski

parent b3b9596459

commit 83092341e1

1 changed files with 28 additions and 21 deletions

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drivers/gpio/gpiolib-cdev.c

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