This is a note to let you know that I've just added the patch titled
drm/amd/display: Zeromem mypipe heap struct before using it
to the 6.0-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-zeromem-mypipe-heap-struct-before-us.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2d28939408cd8ce71c6f45321dd2333d0745b6aa
Author: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Date: Thu Oct 20 17:26:24 2022 -0400
drm/amd/display: Zeromem mypipe heap struct before using it
[ Upstream commit ab4b35008db9b7ae747679250e5c26d7c3a90cea ]
[Why&How]
Bug was caused when moving variable from stack to heap because it was reusable
and garbage was left over, so we need to zero mem.
Reviewed-by: Martin Leung <Martin.Leung@xxxxxxx>
Acked-by: Alan Liu <HaoPing.Liu@xxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Martin Leung <Martin.Leung@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index bea380407151..042f9a62c4c5 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -3197,6 +3197,7 @@ void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_l
mode_lib->vba.FCLKChangeLatency, mode_lib->vba.UrgLatency[i],
mode_lib->vba.SREnterPlusExitTime);
+ memset(&v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull, 0, sizeof(DmlPipe));
v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.myPipe.Dppclk = mode_lib->vba.RequiredDPPCLK[i][j][k];
v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.myPipe.Dispclk = mode_lib->vba.RequiredDISPCLK[i][j];
v->dummy_vars.dml32_ModeSupportAndSystemConfigurationFull.myPipe.PixelClock = mode_lib->vba.PixelClock[k];
