linux-kernel - [PATCH] ipv4: tcp_minisocks: use BUG_ON instead of if condition followed by BUG

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Date:   Mon, 23 Oct 2017 13:10:56 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] ipv4: tcp_minisocks: use BUG_ON instead of if condition
 followed by BUG

Use BUG_ON instead of if condition followed by BUG in tcp_time_wait.

This issue was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 net/ipv4/tcp_minisocks.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 2341b9f..a952357 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -298,8 +298,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
 			key = tp->af_specific->md5_lookup(sk, sk);
 			if (key) {
 				tcptw->tw_md5_key = kmemdup(key, sizeof(*key), GFP_ATOMIC);
-				if (tcptw->tw_md5_key && !tcp_alloc_md5sig_pool())
-					BUG();
+				BUG_ON(tcptw->tw_md5_key && !tcp_alloc_md5sig_pool());
 			}
 		} while (0);
 #endif
-- 
2.7.4