ceph: release old ticket_blob buffer

Release the old ticket_blob buffer when we get an updated service ticket
from the monitor.  Previously these were getting leaked.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/ceph/auth_x.c b/fs/ceph/auth_x.c
index 96e7aaa77678..33d3ad4dc456 100644
--- a/fs/ceph/auth_x.c
+++ b/fs/ceph/auth_x.c
@@ -156,6 +156,7 @@ static int ceph_x_proc_ticket_reply(struct ceph_auth_client *ac,
                 struct timespec validity;
                 struct ceph_crypto_key old_key;
                 void *tp, *tpend;
+                struct ceph_buffer *new_ticket_blob;
 
                 ceph_decode_need(&p, end, sizeof(u32) + 1, bad);
 
@@ -223,9 +224,12 @@ static int ceph_x_proc_ticket_reply(struct ceph_auth_client *ac,
                 ceph_decode_need(&tp, tpend, 1 + sizeof(u64), bad);
                 struct_v = ceph_decode_8(&tp);
                 th->secret_id = ceph_decode_64(&tp);
-                ret = ceph_decode_buffer(&th->ticket_blob, &tp, tpend);
+                ret = ceph_decode_buffer(&new_ticket_blob, &tp, tpend);
                 if (ret)
                         goto out;
+                if (th->ticket_blob)
+                        ceph_buffer_put(th->ticket_blob);
+                th->ticket_blob = new_ticket_blob;
                 dout(" got ticket service %d (%s) secret_id %lld len %d\n",
                      type, ceph_entity_type_name(type), th->secret_id,
                      (int)th->ticket_blob->vec.iov_len);