[PATCH] drm/amdgpu: Off by one in dm_dmub_outbox1_low_irq()

[Alex Deucher]

Applied.  Thanks!

Alex

On Thu, May 19, 2022 at 4:53 PM Harry Wentland <harry.wentland at amd.com> wrote:
>
> On 2022-05-16 03:05, Dan Carpenter wrote:
> > The > ARRAY_SIZE() should be >= ARRAY_SIZE() to prevent an out of bounds
> > access.
> >
> > Fixes: e27c41d5b068 ("drm/amd/display: Support for DMUB HPD interrupt handling")
> > Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
>
> Reviewed-by: Harry Wentland <harry.wentland at amd.com>
>
> Harry
>
> > ---
> >  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > index 6edfc0963dab..c4f122c6faec 100644
> > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> > @@ -770,7 +770,7 @@ static void dm_dmub_outbox1_low_irq(void *interrupt_params)
> >
> >               do {
> >                       dc_stat_get_dmub_notification(adev->dm.dc, &notify);
> > -                     if (notify.type > ARRAY_SIZE(dm->dmub_thread_offload)) {
> > +                     if (notify.type >= ARRAY_SIZE(dm->dmub_thread_offload)) {
> >                               DRM_ERROR("DM: notify type %d invalid!", notify.type);
> >                               continue;
> >                       }
>