Re: [PATCH]staging: slicoss: Fix possible reuse of freed memory in timer function

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On 2/10/14, Kirill Tkhai <tkhai@xxxxxxxxx> wrote:
> Do not call kfree() till timer function is finished.
>
> [This was found using grep. Compiled tested only]
>
> Signed-off-by: Kirill Tkhai <tkhai@xxxxxxxxx>
> CC: Joe Perches <joe@xxxxxxxxxxx>
> CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

CC Chris Harrer.

The problem with that driver is that alacritech guys don't seem to
care. Not sure if anyone has a hardware to test the driver and
probably the code is completely broken.
Probably the better option is to drop the code from the staging tree...

> ---
>  drivers/staging/slicoss/slicoss.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> diff --git a/drivers/staging/slicoss/slicoss.c
> b/drivers/staging/slicoss/slicoss.c
> index 1426ca4..e0de497 100644
> --- a/drivers/staging/slicoss/slicoss.c
> +++ b/drivers/staging/slicoss/slicoss.c
> @@ -2970,7 +2970,7 @@ static void slic_card_cleanup(struct sliccard *card)
>  {
>  	if (card->loadtimerset) {
>  		card->loadtimerset = 0;
> -		del_timer(&card->loadtimer);
> +		del_timer_sync(&card->loadtimer);
>  	}
>
>  	slic_debug_card_destroy(card);
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>


-- 
Regards,
Denis
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