linux-kernel - [PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc

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Date:   Thu, 14 Sep 2017 17:36:29 +0530
From:   Srishti Sharma <srishtishar@...il.com>
To:     oleg.drokin@...el.com
Cc:     andreas.dilger@...el.com, jsimmons@...radead.org,
        gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, outreachy-kernel@...glegroups.com,
        Srishti Sharma <srishtishar@...il.com>
Subject: [PATCH] Staging: lustre: obdclass: Use kcalloc instead of kzalloc

Use kcalloc instead of kzalloc to check for overflow before
multiplication. Done using the following semantic patch by
coccinelle.

http://coccinelle.lip6.fr/rules/kzalloc.cocci

Signed-off-by: Srishti Sharma <srishtishar@...il.com>
---
 drivers/staging/lustre/lustre/obdclass/cl_object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/obdclass/cl_object.c b/drivers/staging/lustre/lustre/obdclass/cl_object.c
index 95c7fa3..28cb8489 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_object.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_object.c
@@ -1016,7 +1016,7 @@ int cl_global_init(void)
 {
 	int result;
 
-	cl_envs = kzalloc(sizeof(*cl_envs) * num_possible_cpus(), GFP_KERNEL);
+	cl_envs = kcalloc(num_possible_cpus(), sizeof(*cl_envs), GFP_KERNEL);
 	if (!cl_envs) {
 		result = -ENOMEM;
 		goto out;
-- 
2.7.4