This is a note to let you know that I've just added the patch titled
[media] cec: Fix runtime BUG when (CONFIG_RC_CORE && !CEC_CAP_RC)
to the 4.11-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:
cec-fix-runtime-bug-when-config_rc_core-cec_cap_rc.patch
and it can be found in the queue-4.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 43c0c03961d0b19bd225a336897606b46e0021a6 Mon Sep 17 00:00:00 2001
From: Lee Jones <lee.jones@xxxxxxxxxx>
Date: Tue, 4 Apr 2017 09:32:19 -0300
Subject: [media] cec: Fix runtime BUG when (CONFIG_RC_CORE && !CEC_CAP_RC)
From: Lee Jones <lee.jones@xxxxxxxxxx>
commit 43c0c03961d0b19bd225a336897606b46e0021a6 upstream.
Currently when the RC Core is enabled (reachable) core code located
in cec_register_adapter() attempts to populate the RC structure with
a pointer to the 'parent' passed in by the caller.
Unfortunately if the caller did not specify RC capability when calling
cec_allocate_adapter(), then there will be no RC structure to populate.
This causes a "NULL pointer dereference" error.
Fixes: f51e80804f0 ("[media] cec: pass parent device in register(), not allocate()")
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/cec/cec-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/cec/cec-core.c
+++ b/drivers/media/cec/cec-core.c
@@ -286,8 +286,8 @@ int cec_register_adapter(struct cec_adap
adap->devnode.dev.parent = parent;
#if IS_REACHABLE(CONFIG_RC_CORE)
- adap->rc->dev.parent = parent;
if (adap->capabilities & CEC_CAP_RC) {
+ adap->rc->dev.parent = parent;
res = rc_register_device(adap->rc);
if (res) {
Patches currently in stable-queue which might be from lee.jones@xxxxxxxxxx are
queue-4.11/cec-fix-runtime-bug-when-config_rc_core-cec_cap_rc.patch