Re: [PATCH][next] Input: serio_raw: Fix uninitialized variable 'written'

From: Dmitry Torokhov
Date: Mon Oct 21 2024 - 15:20:18 EST


Hi Colin,

On Mon, Oct 21, 2024 at 03:41:03PM +0100, Colin Ian King wrote:
> The variable written is not initialized and subsequent increments of the
> variable are using an uninitialized value. Fix this by initializating it
> at the start of the function.

Thank you for the patch but I already have one fixing this up queued.

>
> Fixes: 5b53a9d40c4f ("Input: serio_raw - use guard notation for locks and other resources")
> Signed-off-by: Colin Ian King <colin.i.king@xxxxxxxxx>
> ---
> drivers/input/serio/serio_raw.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
> index e058fef07f57..4d6395088986 100644
> --- a/drivers/input/serio/serio_raw.c
> +++ b/drivers/input/serio/serio_raw.c
> @@ -185,7 +185,7 @@ static ssize_t serio_raw_write(struct file *file, const char __user *buffer,
> {
> struct serio_raw_client *client = file->private_data;
> struct serio_raw *serio_raw = client->serio_raw;
> - int written;
> + int written = 0;
> unsigned char c;
>
> scoped_guard(mutex_intr, &serio_raw_mutex) {
> --
> 2.39.5
>

--
Dmitry