linux-kernel - [PATCH] drm/bridge: vga-dac: Fix edid memory leak

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Message-Id: <20180420190007.1572-1-seanpaul@chromium.org>
Date:   Fri, 20 Apr 2018 14:59:59 -0400
From:   Sean Paul <seanpaul@...omium.org>
To:     dri-devel@...ts.freedesktop.org
Cc:     Sean Paul <seanpaul@...omium.org>, Rob Herring <robh@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Archit Taneja <architt@...eaurora.org>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        stable@...r.kernel.org, David Airlie <airlied@...ux.ie>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/bridge: vga-dac: Fix edid memory leak

edid should be freed once it's finished being used.

Fixes: 56fe8b6f4991 ("drm/bridge: Add RGB to VGA bridge support")
Cc: Rob Herring <robh@...nel.org>
Cc: Sean Paul <seanpaul@...omium.org>
Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc: Archit Taneja <architt@...eaurora.org>
Cc: Andrzej Hajda <a.hajda@...sung.com>
Cc: Laurent Pinchart <Laurent.pinchart@...asonboard.com>
Cc: <stable@...r.kernel.org> # v4.9+
Signed-off-by: Sean Paul <seanpaul@...omium.org>
---
 drivers/gpu/drm/bridge/dumb-vga-dac.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/dumb-vga-dac.c b/drivers/gpu/drm/bridge/dumb-vga-dac.c
index 498d5948d1a8..9837c8d69e69 100644
--- a/drivers/gpu/drm/bridge/dumb-vga-dac.c
+++ b/drivers/gpu/drm/bridge/dumb-vga-dac.c
@@ -56,7 +56,9 @@ static int dumb_vga_get_modes(struct drm_connector *connector)
 	}
 
 	drm_mode_connector_update_edid_property(connector, edid);
-	return drm_add_edid_modes(connector, edid);
+	ret = drm_add_edid_modes(connector, edid);
+	kfree(edid);
+	return ret;
 
 fallback:
 	/*
-- 
Sean Paul, Software Engineer, Google / Chromium OS