[PATCH 2/5] selinux: use correct type for context length

From: "Christian Göttsche" <cgzones@googlemail.com>
To: selinux@vger.kernel.org
Cc: Paul Moore <paul@paul-moore.com>,
	Stephen Smalley <stephen.smalley.work@gmail.com>,
	Eric Paris <eparis@parisplace.org>,
	Nathan Chancellor <nathan@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	Ondrej Mosnacek <omosnace@redhat.com>,
	Austin Kim <austin.kim@lge.com>,
	Kees Cook <keescook@chromium.org>,
	Yang Li <yang.lee@linux.alibaba.com>,
	Casey Schaufler <casey@schaufler-ca.com>,
	linux-kernel@vger.kernel.org, llvm@lists.linux.dev
Subject: [PATCH 2/5] selinux: use correct type for context length
Date: Thu, 17 Feb 2022 15:21:25 +0100	[thread overview]
Message-ID: <20220217142133.72205-1-cgzones@googlemail.com> (raw)

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 argument 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>
---
 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;
-- 
2.35.1

