Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Alexey Khoroshilov <khoroshilov@ispras.ru>
To:     Trond Myklebust <trond.myklebust@hammerspace.com>,
        Anna Schumaker <anna@kernel.org>
Cc:     Alexey Khoroshilov <khoroshilov@ispras.ru>,
        linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org,
        ldv-project@linuxtesting.org
Subject: [PATCH] NFS: remove unneeded check in decode_devicenotify_args()
Date:   Tue, 15 Feb 2022 13:17:04 +0300
Message-Id: <1644920224-24966-1-git-send-email-khoroshilov@ispras.ru>
Precedence: bulk

Overflow check in not needed anymore after we switch to kmalloc_array().

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Fixes: a4f743a6bb20 ("NFSv4.1: Convert open-coded array allocation calls to kmalloc_array()")
---
 fs/nfs/callback_xdr.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index f90de8043b0f..8dcb08e1a885 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -271,10 +271,6 @@ __be32 decode_devicenotify_args(struct svc_rqst *rqstp,
 	n = ntohl(*p++);
 	if (n == 0)
 		goto out;
-	if (n > ULONG_MAX / sizeof(*args->devs)) {
-		status = htonl(NFS4ERR_BADXDR);
-		goto out;
-	}
 
 	args->devs = kmalloc_array(n, sizeof(*args->devs), GFP_KERNEL);
 	if (!args->devs) {
-- 
2.7.4