linux-kernel - [PATCH 04/16] md/bitmap: Improve another size determination in bitmap_storage

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]

Message-ID: <6ca5ea5b-6348-2d17-4cb5-f1c3a512995c@users.sourceforge.net>
Date:   Tue, 27 Sep 2016 18:50:06 +0200
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-raid@...r.kernel.org, Shaohua Li <shli@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 04/16] md/bitmap: Improve another size determination in
 bitmap_storage_alloc()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 27 Sep 2016 14:19:00 +0200

Replace the specification of a data type by a pointer dereference
as the parameter for the operator "sizeof" 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>
---
 drivers/md/bitmap.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 9b3f723..c278865 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -791,9 +791,9 @@ static int bitmap_storage_alloc(struct bitmap_storage *store,
 
 	/* We need 4 bits per page, rounded up to a multiple
 	 * of sizeof(unsigned long) */
-	store->filemap_attr = kzalloc(
-		roundup(DIV_ROUND_UP(num_pages*4, 8), sizeof(unsigned long)),
-		GFP_KERNEL);
+	store->filemap_attr = kzalloc(roundup(DIV_ROUND_UP(num_pages * 4, 8),
+					      sizeof(*store->filemap_attr)),
+				      GFP_KERNEL);
 	if (!store->filemap_attr)
 		return -ENOMEM;
 
-- 
2.10.0