[4.9,076/130] libceph: ceph_x_encrypt_buflen() takes in_len
diff mbox series

Message ID 20170124075538.050639734@linuxfoundation.org
State New, archived
Headers show
Series
  • 4.9.6-stable review
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Commit Message

Greg Kroah-Hartman Jan. 24, 2017, 7:55 a.m. UTC
4.9-stable review patch.  If anyone has any objections, please let me know.

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

From: Ilya Dryomov <idryomov@gmail.com>

commit 36721ece1e84a25130c4befb930509b3f96de020 upstream.

Pass what's going to be encrypted - that's msg_b, not ticket_blob.
ceph_x_encrypt_buflen() returns the upper bound, so this doesn't change
the maxlen calculation, but makes it a bit clearer.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 net/ceph/auth_x.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

Patch
diff mbox series

--- a/net/ceph/auth_x.c
+++ b/net/ceph/auth_x.c
@@ -308,8 +308,8 @@  static int ceph_x_build_authorizer(struc
 	if (ret)
 		goto out_au;
 
-	maxlen = sizeof(*msg_a) + sizeof(msg_b) +
-		ceph_x_encrypt_buflen(ticket_blob_len);
+	maxlen = sizeof(*msg_a) + ticket_blob_len +
+		ceph_x_encrypt_buflen(sizeof(msg_b));
 	dout("  need len %d\n", maxlen);
 	if (au->buf && au->buf->alloc_len < maxlen) {
 		ceph_buffer_put(au->buf);
@@ -350,11 +350,12 @@  static int ceph_x_build_authorizer(struc
 			     p, end - p);
 	if (ret < 0)
 		goto out_au;
+
 	p += ret;
+	WARN_ON(p > end);
 	au->buf->vec.iov_len = p - au->buf->vec.iov_base;
 	dout(" built authorizer nonce %llx len %d\n", au->nonce,
 	     (int)au->buf->vec.iov_len);
-	BUG_ON(au->buf->vec.iov_len > maxlen);
 	return 0;
 
 out_au: