From: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Date: Wed, 6 Dec 2017 01:47:04 +0000 (+0900)
Subject: rds: debug: fix null check on static array
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d9b8693783e8a1ce8e4495d13d1dd6d8081f5070;p=linux.git

rds: debug: fix null check on static array

t_name cannot be NULL since it is an array field of a struct.
Replacing null check on static array with string length check using
strnlen()

Signed-off-by: Prashant Bhole <bhole_prashant_q7@lab.ntt.co.jp>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/rds/connection.c b/net/rds/connection.c
index 9efc82c665b5a..6492c0b608a43 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -230,8 +230,8 @@ static struct rds_connection *__rds_conn_create(struct net *net,
 
 	rdsdebug("allocated conn %p for %pI4 -> %pI4 over %s %s\n",
 	  conn, &laddr, &faddr,
-	  trans->t_name ? trans->t_name : "[unknown]",
-	  is_outgoing ? "(outgoing)" : "");
+	  strnlen(trans->t_name, sizeof(trans->t_name)) ? trans->t_name :
+	  "[unknown]", is_outgoing ? "(outgoing)" : "");
 
 	/*
 	 * Since we ran without holding the conn lock, someone could