From: Amir Goldstein <amir73il@gmail.com>
Date: Fri, 28 Sep 2018 20:41:48 +0300
Subject: [PATCH] lockd: fix access beyond unterminated strings in prints
Git-commit: 93f38b6fae0ea8987e22d9e6c38f8dfdccd867ee
Patch-mainline: v4.20
References: git-fixes

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>
Acked-by: NeilBrown <neilb@suse.com>

---
 fs/lockd/host.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/lockd/host.c
+++ b/fs/lockd/host.c
@@ -340,7 +340,7 @@ struct nlm_host *nlmsvc_lookup_host(cons
 	};
 	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"));