Patch "drm/mediatek/dp: fix memory leak on ->get_edid callback audio detection" has been added to the 6.5-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    drm/mediatek/dp: fix memory leak on ->get_edid callback audio detection

to the 6.5-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-mediatek-dp-fix-memory-leak-on-get_edid-callback-audio-detection.patch
and it can be found in the queue-6.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From dab12fa8d2bd3868cf2de485ed15a3feef28a13d Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula at intel.com>
Date: Thu, 14 Sep 2023 18:53:17 +0300
Subject: drm/mediatek/dp: fix memory leak on ->get_edid callback audio detection

From: Jani Nikula <jani.nikula at intel.com>

commit dab12fa8d2bd3868cf2de485ed15a3feef28a13d upstream.

The sads returned by drm_edid_to_sad() needs to be freed.

Fixes: e71a8ebbe086 ("drm/mediatek: dp: Audio support for MT8195")
Cc: Guillaume Ranquet <granquet at baylibre.com>
Cc: Bo-Chen Chen <rex-bc.chen at mediatek.com>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
Cc: Dmitry Osipenko <dmitry.osipenko at collabora.com>
Cc: Chun-Kuang Hu <chunkuang.hu at kernel.org>
Cc: Philipp Zabel <p.zabel at pengutronix.de>
Cc: Matthias Brugger <matthias.bgg at gmail.com>
Cc: dri-devel at lists.freedesktop.org
Cc: linux-mediatek at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: <stable at vger.kernel.org> # v6.1+
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
Reviewed-by: Chen-Yu Tsai <wenst at chromium.org>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20230914155317.2511876-1-jani.nikula@intel.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu at kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 drivers/gpu/drm/mediatek/mtk_dp.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -1983,7 +1983,6 @@ static struct edid *mtk_dp_get_edid(stru
 	bool enabled = mtk_dp->enabled;
 	struct edid *new_edid = NULL;
 	struct mtk_dp_audio_cfg *audio_caps = &mtk_dp->info.audio_cur_cfg;
-	struct cea_sad *sads;
 
 	if (!enabled) {
 		drm_atomic_bridge_chain_pre_enable(bridge, connector->state->state);
@@ -2010,7 +2009,11 @@ static struct edid *mtk_dp_get_edid(stru
 	}
 
 	if (new_edid) {
+		struct cea_sad *sads;
+
 		audio_caps->sad_count = drm_edid_to_sad(new_edid, &sads);
+		kfree(sads);
+
 		audio_caps->detect_monitor = drm_detect_monitor_audio(new_edid);
 	}
 


Patches currently in stable-queue which might be from jani.nikula at intel.com are

queue-6.5/drm-msm-dp-skip-validity-check-for-dp-cts-edid-check.patch
queue-6.5/i915-perf-fix-null-deref-bugs-with-drm_dbg-calls.patch
queue-6.5/drm-mediatek-dp-fix-memory-leak-on-get_edid-callback-error-path.patch
queue-6.5/drm-edid-fixup-h-vsync_end-instead-of-h-vtotal.patch
queue-6.5/drm-mediatek-dp-fix-memory-leak-on-get_edid-callback-audio-detection.patch
queue-6.5/drm-i915-mtl-avoid-stringop-overflow-warning.patch
queue-6.5/drm-i915-tc-fix-wformat-truncation-in-intel_tc_port_.patch