Applied. thanks! Alex On Mon, Feb 22, 2016 at 9:21 PM, Zhu, Rex <Rex.Zhu@xxxxxxx> wrote: > > Reviewed-by: Rex Zhu <Rex.Zhu@xxxxxxx> > > Best Regards > Rex Zhu > > -----Original Message----- > From: Bradley Pankow [mailto:btpankow@xxxxxxxxx] > Sent: Tuesday, February 23, 2016 9:12 AM > To: Deucher, Alexander; Zhu, Rex; Zhou, Jammy > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Bradley Pankow > Subject: [PATCH] amdgpu: fix NULL pointer dereference at tonga_check_states_equal > > The event_data passed from pem_fini was not cleared upon initialization. > This caused NULL checks to pass and cast_const_phw_tonga_power_state to attempt to dereference an invalid pointer. Clear the event_data in pem_init and pem_fini before calling pem_handle_event. > > Signed-off-by: Bradley Pankow <btpankow@xxxxxxxxx> > --- > drivers/gpu/drm/amd/powerplay/eventmgr/eventmgr.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/amd/powerplay/eventmgr/eventmgr.c b/drivers/gpu/drm/amd/powerplay/eventmgr/eventmgr.c > index 52a3efc..46410e3 100644 > --- a/drivers/gpu/drm/amd/powerplay/eventmgr/eventmgr.c > +++ b/drivers/gpu/drm/amd/powerplay/eventmgr/eventmgr.c > @@ -31,7 +31,7 @@ > static int pem_init(struct pp_eventmgr *eventmgr) { > int result = 0; > - struct pem_event_data event_data; > + struct pem_event_data event_data = { {0} }; > > /* Initialize PowerPlay feature info */ > pem_init_feature_info(eventmgr); > @@ -52,7 +52,7 @@ static int pem_init(struct pp_eventmgr *eventmgr) > > static void pem_fini(struct pp_eventmgr *eventmgr) { > - struct pem_event_data event_data; > + struct pem_event_data event_data = { {0} }; > > pem_uninit_featureInfo(eventmgr); > pem_unregister_interrupts(eventmgr); > -- > 2.7.1 > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
