linux-kernel - [PATCH] ksmbd: Remove a redundant zeroing of memory

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-next>] [day] [month] [year] [list]

Message-Id: <f8f1f383c4533a91a6025b1db5827ed6aaab002f.1647980983.git.christophe.jaillet@wanadoo.fr>
Date:   Tue, 22 Mar 2022 21:29:51 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Namjae Jeon <linkinjeon@...nel.org>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steve French <sfrench@...ba.org>,
        Hyunchul Lee <hyc.lee@...il.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-cifs@...r.kernel.org
Subject: [PATCH] ksmbd: Remove a redundant zeroing of memory

fill_transform_hdr() already call memset(0) on its 1st argument, so there
is no need to clear it explicitly before calling this function.

Use kmalloc() instead of kzalloc() to save a few cycles.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Alternatively, fill_transform_hdr() has only one caller. So its memset()
could be removed instead and this kzalloc() left as is.
---
 fs/ksmbd/smb2pdu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index bcb98109bac9..0e4f819e5859 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -8434,7 +8434,7 @@ int smb3_encrypt_resp(struct ksmbd_work *work)
 	if (ARRAY_SIZE(iov) < rq_nvec)
 		return -ENOMEM;
 
-	work->tr_buf = kzalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
+	work->tr_buf = kmalloc(sizeof(struct smb2_transform_hdr) + 4, GFP_KERNEL);
 	if (!work->tr_buf)
 		return rc;
 
-- 
2.32.0