linux-kernel - [PATCH] hwmon: (aquacomputer_d5next) Fix length of speed

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Message-ID: <20241124152725.7205-1-savicaleksa83@gmail.com>
Date: Sun, 24 Nov 2024 16:27:24 +0100
From: Aleksa Savic <savicaleksa83@...il.com>
To: linux-hwmon@...r.kernel.org
Cc: Aleksa Savic <savicaleksa83@...il.com>,
	Arne Schwabe <arne@...2549.org>,
	Jack Doan <me@...kdoan.com>,
	Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] hwmon: (aquacomputer_d5next) Fix length of speed_input array

Commit 120584c728a6 ("hwmon: (aquacomputer_d5next) Add support for Octo
flow sensor") added support for reading Octo flow sensor, but didn't
update the priv->speed_input array length. Since Octo has 8 fans, with
the addition of the flow sensor the proper length for speed_input is 9.

Reported by Arne Schwabe on Github [1], who received a UBSAN warning.

[1]: https://github.com/aleksamagicka/aquacomputer_d5next-hwmon/issues/100

Fixes: 120584c728a6 ("hwmon: (aquacomputer_d5next) Add support for Octo flow sensor")
Reported-by: Arne Schwabe <arne@...2549.org>
Signed-off-by: Aleksa Savic <savicaleksa83@...il.com>
---
 drivers/hwmon/aquacomputer_d5next.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/aquacomputer_d5next.c b/drivers/hwmon/aquacomputer_d5next.c
index 34cac27e4dde..0dcb8a3a691d 100644
--- a/drivers/hwmon/aquacomputer_d5next.c
+++ b/drivers/hwmon/aquacomputer_d5next.c
@@ -597,7 +597,7 @@ struct aqc_data {
 
 	/* Sensor values */
 	s32 temp_input[20];	/* Max 4 physical and 16 virtual or 8 physical and 12 virtual */
-	s32 speed_input[8];
+	s32 speed_input[9];
 	u32 speed_input_min[1];
 	u32 speed_input_target[1];
 	u32 speed_input_max[1];
-- 
2.47.0