2013/8/6 Mauro Dreissig <mukadr@gmail.com>

> From: Mauro Dreissig <mukadr@gmail.com>
>
> The "pol->mode" field is accessed even when no mempolicy
> is assigned to the "pol" variable.
>
> Signed-off-by: Mauro Dreissig <mukadr@gmail.com>
> ---
>  mm/mempolicy.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> index 6b1d426..105fff0 100644
> --- a/mm/mempolicy.c
> +++ b/mm/mempolicy.c
> @@ -127,12 +127,16 @@ static struct mempolicy *get_task_policy(struct
> task_struct *p)
>
>         if (!pol) {
>                 node = numa_node_id();
> -               if (node != NUMA_NO_NODE)
> +               if (node != NUMA_NO_NODE) {
>                         pol = &preferred_node_policy[node];
>
> -               /* preferred_node_policy is not initialised early in boot
> */
> -               if (!pol->mode)
> -                       pol = NULL;
> +                       /*
> +                        * preferred_node_policy is not initialised early
> +                        * in boot
> +                        */
> +                       if (!pol->mode)
> +                               pol = NULL;
> +               }
>         }
>
>         return pol;
> --
> 1.8.1.2
>
>
A patch about this issue already exist, please ignore my message.

http://marc.info/?l=linux-mm&m=137576205227365&w=2