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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Harshvardhan Jha <harshvardhan.jha@oracle.com>,
        Steffen Klassert <steffen.klassert@secunet.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.10 19/98] net: xfrm: Fix end of loop tests for list_for_each_entry
Date:   Tue, 24 Aug 2021 12:57:49 -0400
Message-Id: <20210824165908.709932-20-sashal@kernel.org>
In-Reply-To: <20210824165908.709932-1-sashal@kernel.org>
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From: Harshvardhan Jha <harshvardhan.jha@oracle.com>

[ Upstream commit 480e93e12aa04d857f7cc2e6fcec181c0d690404 ]

The list_for_each_entry() iterator, "pos" in this code, can never be
NULL so the warning will never be printed.

Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/xfrm/xfrm_ipcomp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c
index 4d422447aadc..0814320472f1 100644
--- a/net/xfrm/xfrm_ipcomp.c
+++ b/net/xfrm/xfrm_ipcomp.c
@@ -250,7 +250,7 @@ static void ipcomp_free_tfms(struct crypto_comp * __percpu *tfms)
 			break;
 	}
 
-	WARN_ON(!pos);
+	WARN_ON(list_entry_is_head(pos, &ipcomp_tfms_list, list));
 
 	if (--pos->users)
 		return;
-- 
2.30.2