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

Greg Kroah-Hartman
2021-09-06T12:57:45Z

From: Vignesh Raghavendra <vigneshr@ti.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@linaro.org>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20201111112653.2710-1-vigneshr@ti.com
Signed-off-by: Nobuhiro Iwamatsu (CIP) <nobuhiro1.iwamatsu@toshiba.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 = {