linux-kernel - [PATCH 3.16.y-ckt 106/216] nfsd4: fix xdr4 count of server in fs

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Date:	Mon, 12 Jan 2015 18:03:43 +0000
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Benjamin Coddington <bcodding@...hat.com>,
	"J. Bruce Fields" <bfields@...hat.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 106/216] nfsd4: fix xdr4 count of server in fs_location4

3.16.7-ckt4 -stable review patch.  If anyone has any objections, please let me know.

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

From: Benjamin Coddington <bcodding@...hat.com>

commit bf7491f1be5e125eece2ec67e0f79d513caa6c7e upstream.

Fix a bug where nfsd4_encode_components_esc() incorrectly calculates the
length of server array in fs_location4--note that it is a count of the
number of array elements, not a length in bytes.

Signed-off-by: Benjamin Coddington <bcodding@...hat.com>
Fixes: 082d4bd72a45 (nfsd4: "backfill" using write_bytes_to_xdr_buf)
Signed-off-by: J. Bruce Fields <bfields@...hat.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 fs/nfsd/nfs4xdr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 69f15dc9e16b..dda2e4d91a25 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1782,7 +1782,7 @@ static __be32 nfsd4_encode_components_esc(struct xdr_stream *xdr, char sep,
 
 		str = end;
 	}
-	pathlen = htonl(xdr->buf->len - pathlen_offset);
+	pathlen = htonl(count);
 	write_bytes_to_xdr_buf(xdr->buf, pathlen_offset, &pathlen, 4);
 	return 0;
 }
-- 
2.1.4

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