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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Dan Carpenter <dan.carpenter@oracle.com>,
        Imre Deak <imre.deak@solidboot.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 42/88] fbdev: omapfb: off by one in
 omapfb_register_client()
Thread-Topic: [PATCH AUTOSEL 4.18 42/88] fbdev: omapfb: off by one in
 omapfb_register_client()
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Date:   Fri, 7 Sep 2018 00:36:23 +0000
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From: Dan Carpenter <dan.carpenter@oracle.com>

[ Upstream commit 5ec1ec35b2979b59d0b33381e7c9aac17e159d16 ]

The omapfb_register_client[] array has OMAPFB_PLANE_NUM elements so the
> should be >=3D or we are one element beyond the end of the array.

Fixes: 8b08cf2b64f5 ("OMAP: add TI OMAP framebuffer driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Imre Deak <imre.deak@solidboot.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/video/fbdev/omap/omapfb_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/omap/omapfb_main.c b/drivers/video/fbdev/o=
map/omapfb_main.c
index 585f39efcff6..1c75f4806ed3 100644
--- a/drivers/video/fbdev/omap/omapfb_main.c
+++ b/drivers/video/fbdev/omap/omapfb_main.c
@@ -958,7 +958,7 @@ int omapfb_register_client(struct omapfb_notifier_block=
 *omapfb_nb,
 {
 	int r;
=20
-	if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
+	if ((unsigned)omapfb_nb->plane_idx >=3D OMAPFB_PLANE_NUM)
 		return -EINVAL;
=20
 	if (!notifier_inited) {
--=20
2.17.1