[PATCH 3.18 103/150] nfsd4: fix xdr4 inclusion of escaped char

[Greg Kroah-Hartman]

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

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

From: Benjamin Coddington <bcodding@xxxxxxxxxx>

commit 5a64e56976f1ba98743e1678c0029a98e9034c81 upstream.

Fix a bug where nfsd4_encode_components_esc() includes the esc_end char as
an additional string encoding.

Signed-off-by: Benjamin Coddington <bcodding@xxxxxxxxxx>
Fixes: e7a0444aef4a "nfsd: add IPv6 addr escaping to fs_location hosts"
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 fs/nfsd/nfs4xdr.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1795,6 +1795,9 @@ static __be32 nfsd4_encode_components_es
 		}
 		else
 			end++;
+		if (found_esc)
+			end = next;
+
 		str = end;
 	}
 	pathlen = htonl(xdr->buf->len - pathlen_offset);


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