From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Thu, 6 Jun 2024 16:46:22 +0000 (+0300)
Subject: regmap: Switch to use kmemdup_array()
X-Git-Tag: io_uring-6.11-20240722~115^2~7^2~3
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=f6841d41a8a36a4c5cbfee39280845f83fed6a87;p=linux-block.git

regmap: Switch to use kmemdup_array()

Let the kememdup_array() take care about multiplication and possible
overflows.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240606164717.3031107-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 0a34dd3c4f38..88c02b71b2ee 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2347,7 +2347,7 @@ out:
 	} else {
 		void *wval;
 
-		wval = kmemdup(val, val_count * val_bytes, map->alloc_flags);
+		wval = kmemdup_array(val, val_count, val_bytes, map->alloc_flags);
 		if (!wval)
 			return -ENOMEM;