netdev - [PATCH 1/5] sctp: Use kmalloc_array() in sctp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 22 May 2017 18:37:19 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Neil Horman <nhorman@...driver.com>,
        Vlad Yasevich <vyasevich@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/5] sctp: Use kmalloc_array() in sctp_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 22 May 2017 17:20:11 +0200

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kmalloc_array".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data structure by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 net/sctp/protocol.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 989a900383b5..2b1a6215bd2f 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1442,6 +1442,6 @@ static __init int sctp_init(void)
 
 	/* Allocate and initialize the endpoint hash table.  */
 	sctp_ep_hashsize = 64;
-	sctp_ep_hashtable =
-		kmalloc(64 * sizeof(struct sctp_hashbucket), GFP_KERNEL);
+	sctp_ep_hashtable = kmalloc_array(64, sizeof(*sctp_ep_hashtable),
+					  GFP_KERNEL);
 	if (!sctp_ep_hashtable) {
-- 
2.13.0