linux-kernel - [PATCH 14/19] batadv_socket_read(): get rid of pointless access

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Date:   Mon, 11 May 2020 05:45:48 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, viro@...iv.linux.org.uk,
        linux-kernel@...r.kernel.org
Subject: [PATCH 14/19] batadv_socket_read(): get rid of pointless access_ok()

From: Al Viro <viro@...iv.linux.org.uk>

address is passed only to copy_to_user()

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 net/batman-adv/icmp_socket.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c
index ccb535c77e5d..8bdabc03b0b2 100644
--- a/net/batman-adv/icmp_socket.c
+++ b/net/batman-adv/icmp_socket.c
@@ -135,9 +135,6 @@ static ssize_t batadv_socket_read(struct file *file, char __user *buf,
 	if (!buf || count < sizeof(struct batadv_icmp_packet))
 		return -EINVAL;
 
-	if (!access_ok(buf, count))
-		return -EFAULT;
-
 	error = wait_event_interruptible(socket_client->queue_wait,
 					 socket_client->queue_len);
 
-- 
2.11.0