From 93f38b6fae0ea8987e22d9e6c38f8dfdccd867ee Mon Sep 17 00:00:00 2001
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
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>
---
fs/lockd/host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/lockd/host.c b/fs/lockd/host.c
index d35cd6be06759..93fb7cf0b92b6 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"));
--
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