The 'top_pipe_to_program pointer' can be NULL and it is checked
at the first dereference, but not at the second.
Add a check before using it.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Igor Artemiev <igor.a.artem...@mcst.ru>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 3a9077b60029..154ad23ff931 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -3824,7 +3824,8 @@ static void commit_planes_for_stream(struct dc *dc,
}
if ((update_type != UPDATE_TYPE_FAST) &&
stream->update_flags.bits.dsc_changed)
- if
(top_pipe_to_program->stream_res.tg->funcs->lock_doublebuffer_enable) {
+ if (top_pipe_to_program &&
+
top_pipe_to_program->stream_res.tg->funcs->lock_doublebuffer_enable) {
top_pipe_to_program->stream_res.tg->funcs->wait_for_state(
top_pipe_to_program->stream_res.tg,
CRTC_STATE_VACTIVE);
--
2.30.2
