This is a note to let you know that I've just added the patch titled
drm/amd/display: Check correct bounds for stream encoder instances for DCN303
to the 5.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-check-correct-bounds-for-stream-encoder-instances-for-dcn303.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 89b008222c2bf21e50219725caed31590edfd9d1 Mon Sep 17 00:00:00 2001
From: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Date: Tue, 26 Jul 2022 13:13:27 -0400
Subject: drm/amd/display: Check correct bounds for stream encoder instances for DCN303
From: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
commit 89b008222c2bf21e50219725caed31590edfd9d1 upstream.
[Why & How]
eng_id for DCN303 cannot be more than 1, since we have only two
instances of stream encoders.
Check the correct boundary condition for engine ID for DCN303 prevent
the potential out of bounds access.
Fixes: cd6d421e3d1a ("drm/amd/display: Initial DC support for Beige Goby")
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Chris Park <Chris.Park@xxxxxxx>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c
@@ -372,7 +372,7 @@ static struct stream_encoder *dcn303_str
int afmt_inst;
/* Mapping of VPG, AFMT, DME register blocks to DIO block instance */
- if (eng_id <= ENGINE_ID_DIGE) {
+ if (eng_id <= ENGINE_ID_DIGB) {
vpg_inst = eng_id;
afmt_inst = eng_id;
} else
Patches currently in stable-queue which might be from aurabindo.pillai@xxxxxxx are
queue-5.19/drm-amd-display-check-correct-bounds-for-stream-encoder-instances-for-dcn303.patch
