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From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>,
        Paul Moore <paul@paul-moore.com>,
        Sasha Levin <sashal@kernel.org>,
        stephen.smalley.work@gmail.com, eparis@parisplace.org,
        selinux@vger.kernel.org
Subject: [PATCH AUTOSEL 5.17 15/43] selinux: use correct type for context length
Date:   Mon, 28 Mar 2022 07:17:59 -0400
Message-Id: <20220328111828.1554086-15-sashal@kernel.org>
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From: Christian Göttsche <cgzones@googlemail.com>

[ Upstream commit b97df7c098c531010e445da88d02b7bf7bf59ef6 ]

security_sid_to_context() expects a pointer to an u32 as the address
where to store the length of the computed context.

Reported by sparse:

    security/selinux/xfrm.c:359:39: warning: incorrect type in arg 4
                                    (different signedness)
    security/selinux/xfrm.c:359:39:    expected unsigned int
                                       [usertype] *scontext_len
    security/selinux/xfrm.c:359:39:    got int *

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
[PM: wrapped commit description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 security/selinux/xfrm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index 90697317895f..c576832febc6 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -347,7 +347,7 @@ int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x,
 	int rc;
 	struct xfrm_sec_ctx *ctx;
 	char *ctx_str = NULL;
-	int str_len;
+	u32 str_len;
 
 	if (!polsec)
 		return 0;
-- 
2.34.1