linux-kernel - [PATCH 3.11 058/137] dns_resolver: Null-terminate the right string

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Message-Id: <1408354398-10226-59-git-send-email-luis.henriques@canonical.com>
Date:	Mon, 18 Aug 2014 10:31:59 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Ben Hutchings <ben@...adent.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.11 058/137] dns_resolver: Null-terminate the right string

3.11.10.15 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

commit 640d7efe4c08f06c4ae5d31b79bd8740e7f6790a upstream.

*_result[len] is parsed as *(_result[len]) which is not at all what we
want to touch here.

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Fixes: 84a7c0b1db1c ("dns_resolver: assure that dns_query() result is null-terminated")
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 net/dns_resolver/dns_query.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index ede0e2d7412e..2022b46ab38f 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c
@@ -151,7 +151,7 @@ int dns_query(const char *type, const char *name, size_t namelen,
 		goto put;
 
 	memcpy(*_result, upayload->data, len);
-	*_result[len] = '\0';
+	(*_result)[len] = '\0';
 
 	if (_expiry)
 		*_expiry = rkey->expiry;
-- 
1.9.1

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