From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Tue, 17 Oct 2017 20:43:43 +0000 (+0300)
Subject: drm/bridge: adv7511: Fix a use after free
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8b32948690946e89c198e44f8a1252295473f348;p=openwrt%2Fstaging%2Fblogic.git

drm/bridge: adv7511: Fix a use after free

We free "edid", then use it again on the next line.

Fixes: 3b1b975003e4 ("drm: adv7511/33: add HDMI CEC support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20171017204343.zctliubjkq7imudi@mwanda
---

diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 31ca883bda83..0e14f1572d05 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -607,10 +607,10 @@ static int adv7511_get_modes(struct adv7511 *adv7511,
 	adv7511_set_config_csc(adv7511, connector, adv7511->rgb,
 			       drm_detect_hdmi_monitor(edid));
 
-	kfree(edid);
-
 	cec_s_phys_addr_from_edid(adv7511->cec_adap, edid);
 
+	kfree(edid);
+
 	return count;
 }