From: Amir Goldstein <amir73il@gmail.com>
Date: Fri, 28 Sep 2018 17:41:48 +0000 (+0300)
Subject: lockd: fix access beyond unterminated strings in prints
X-Git-Tag: v4.19.2~89
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=86edf5629edc161a5fbe6c5d9179f7fe8629c557;p=platform%2Fkernel%2Flinux-rpi.git

lockd: fix access beyond unterminated strings in prints

commit 93f38b6fae0ea8987e22d9e6c38f8dfdccd867ee upstream.

printk format used %*s instead of %.*s, so hostname_len does not limit
the number of bytes accessed from hostname.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index d35cd6b..93fb7cf0 100644
--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -341,7 +341,7 @@ struct nlm_host *nlmsvc_lookup_host(const struct svc_rqst *rqstp,
 	};
 	struct lockd_net *ln = net_generic(net, lockd_net_id);
 
-	dprintk("lockd: %s(host='%*s', vers=%u, proto=%s)\n", __func__,
+	dprintk("lockd: %s(host='%.*s', vers=%u, proto=%s)\n", __func__,
 			(int)hostname_len, hostname, rqstp->rq_vers,
 			(rqstp->rq_prot == IPPROTO_UDP ? "udp" : "tcp"));