linux-kernel - [PATCH 5.10 25/29] serial: 8250: 8250_omap: Fix possible array out of bounds access

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Date:   Mon,  6 Sep 2021 14:55:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Naresh Kamboju <naresh.kamboju@...aro.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        "Nobuhiro Iwamatsu (CIP)" <nobuhiro1.iwamatsu@...hiba.co.jp>
Subject: [PATCH 5.10 25/29] serial: 8250: 8250_omap: Fix possible array out of bounds access

From: Vignesh Raghavendra <vigneshr@...com>

commit d4548b14dd7e5c698f81ce23ce7b69a896373b45 upstream.

k3_soc_devices array is missing a sentinel entry which may result in out
of bounds access as reported by kernel KASAN.

Fix this by adding a sentinel entry.

Fixes: 439c7183e5b9 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable")
Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
Link: https://lore.kernel.org/r/20201111112653.2710-1-vigneshr@ti.com
Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@...hiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/tty/serial/8250/8250_omap.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -1211,6 +1211,7 @@ static int omap8250_no_handle_irq(struct
 static const struct soc_device_attribute k3_soc_devices[] = {
 	{ .family = "AM65X",  },
 	{ .family = "J721E", .revision = "SR1.0" },
+	{ /* sentinel */ }
 };
 
 static struct omap8250_dma_params am654_dma = {