From 0bf29f10c59ad1d8f9cdb2217054f84144918959 Mon Sep 17 00:00:00 2001
From: Hangyu Hua <hbh25y@gmail.com>
Date: Mon, 16 May 2022 11:20:42 +0800
Subject: drm/dp/mst: fix a possible memory leak in fetch_monitor_name()
Git-commit: 6e03b13cc7d9427c2c77feed1549191015615202
Patch-mainline: v5.18
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
drm_dp_mst_get_edid call kmemdup to create mst_edid. So mst_edid need to be
freed after use.
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20220516032042.13166-1-hbh25y@gmail.com
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/dp/drm_dp_mst_topology.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/dp/drm_dp_mst_topology.c b/drivers/gpu/drm/dp/drm_dp_mst_topology.c
index 11300b53d24f..7a7cc44686f9 100644
--- a/drivers/gpu/drm/dp/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/dp/drm_dp_mst_topology.c
@@ -4852,6 +4852,7 @@ static void fetch_monitor_name(struct drm_dp_mst_topology_mgr *mgr,
mst_edid = drm_dp_mst_get_edid(port->connector, mgr, port);
drm_edid_get_monitor_name(mst_edid, name, namelen);
+ kfree(mst_edid);
}
/**
--
2.38.1