netdev - [PATCH] netlink: fix hash::nelems check

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Message-Id: <1536417194-20828-1-git-send-email-lirongqing@baidu.com>
Date:   Sat,  8 Sep 2018 22:33:14 +0800
From:   Li RongQing <lirongqing@...du.com>
To:     netdev@...r.kernel.org
Subject: [PATCH] netlink: fix hash::nelems check

The type of hash::nelems has been changed from size_t to atom_t
which is int in fact, and impossible to be bigger than UINT_MAX

Fixes: 97defe1ecf86 ("rhashtable: Per bucket locks & deferred expansion/shrinking")
Signed-off-by: Zhang Yu <zhangyu31@...du.com>
Signed-off-by: Li RongQing <lirongqing@...du.com>
---
 net/netlink/af_netlink.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index b4a29bcc33b9..412437baee63 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -575,8 +575,7 @@ static int netlink_insert(struct sock *sk, u32 portid)
 		goto err;
 
 	err = -ENOMEM;
-	if (BITS_PER_LONG > 32 &&
-	    unlikely(atomic_read(&table->hash.nelems) >= UINT_MAX))
+	if (unlikely(atomic_read(&table->hash.nelems) == INT_MAX))
 		goto err;
 
 	nlk_sk(sk)->portid = portid;
-- 
2.16.2