linux-kernel - Applied "regulator: pv88080: Fix array out-of-bounds access" to the regulator tree

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Date:   Tue, 19 Feb 2019 15:50:37 +0000 (GMT)
From:   Mark Brown <broonie@...nel.org>
To:     Axel Lin <axel.lin@...ics.com>
Cc:     Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: Applied "regulator: pv88080: Fix array out-of-bounds access" to the regulator tree

The patch

   regulator: pv88080: Fix array out-of-bounds access

has been applied to the regulator tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git 

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 3c413f594c4f9df40061445667ca11a12bc8ee34 Mon Sep 17 00:00:00 2001
From: Axel Lin <axel.lin@...ics.com>
Date: Tue, 19 Feb 2019 18:00:01 +0800
Subject: [PATCH] regulator: pv88080: Fix array out-of-bounds access

Fix off-by-one while iterating current_limits array.
The valid index should be 0 ~ n_current_limits -1.

Fixes: 99cf3af5e2d5 ("regulator: pv88080: new regulator driver")
Signed-off-by: Axel Lin <axel.lin@...ics.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/regulator/pv88080-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/pv88080-regulator.c b/drivers/regulator/pv88080-regulator.c
index 9a08cb2de501..6770e4de2097 100644
--- a/drivers/regulator/pv88080-regulator.c
+++ b/drivers/regulator/pv88080-regulator.c
@@ -279,7 +279,7 @@ static int pv88080_set_current_limit(struct regulator_dev *rdev, int min,
 	int i;

 	/* search for closest to maximum */
-	for (i = info->n_current_limits; i >= 0; i--) {
+	for (i = info->n_current_limits - 1; i >= 0; i--) {
 		if (min <= info->current_limits[i]
 			&& max >= info->current_limits[i]) {
 				return regmap_update_bits(rdev->regmap,
-- 
2.20.1