Re: [RFC PATCH v1 02/10] s390/cio: Fix cleanup when unsupported IDA format is used

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On Fri,  9 Nov 2018 03:39:29 +0100
Eric Farman <farman@xxxxxxxxxxxxx> wrote:

> Direct returns from within a loop are rude, but it doesn't mean it gets
> to avoid releasing the memory acquired beforehand.
> 
> Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx>
> ---
>  drivers/s390/cio/vfio_ccw_cp.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
> index ef5ab45d94b3..70a006ba4d05 100644
> --- a/drivers/s390/cio/vfio_ccw_cp.c
> +++ b/drivers/s390/cio/vfio_ccw_cp.c
> @@ -387,8 +387,10 @@ static int ccwchain_calc_length(u64 iova, struct channel_program *cp)
>  		 * orb specified one of the unsupported formats, we defer
>  		 * checking for IDAWs in unsupported formats to here.
>  		 */
> -		if ((!cp->orb.cmd.c64 || cp->orb.cmd.i2k) && ccw_is_idal(ccw))
> +		if ((!cp->orb.cmd.c64 || cp->orb.cmd.i2k) && ccw_is_idal(ccw)) {
> +			kfree(p);
>  			return -EOPNOTSUPP;
> +		}
>  
>  		if ((!ccw_is_chain(ccw)) && (!ccw_is_tic(ccw)))
>  			break;

Thanks, applied.



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