Hello, I wanted to ping the list and see if this could get a review.
On Mon, Jan 9, 2017 at 8:27 PM, Vlad Tsyrklevich <v...@tsyrklevich.net> wrote:
> Clear the 'unused' field to avoid leaking memory to userland in
> copy_result_to_user().
>
> Signed-off-by: Vlad Tsyrklevich <v...@tsyrklevich.net>
> ---
> fs/dlm/user.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/fs/dlm/user.c b/fs/dlm/user.c
> index 1ce908c..0570711 100644
> --- a/fs/dlm/user.c
> +++ b/fs/dlm/user.c
> @@ -138,6 +138,8 @@ static void compat_output(struct dlm_lock_result *res,
> res32->lksb.sb_flags = res->lksb.sb_flags;
> res32->lksb.sb_lkid = res->lksb.sb_lkid;
> res32->lksb.sb_lvbptr = (__u32)(long)res->lksb.sb_lvbptr;
> +
> + memset(&res32->unused, 0, sizeof(res32->unused));
> }
> #endif
>
> --
> 2.7.0
>
