afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID

Fix the handling of the CB.InitCallBackState3 service call to find the
record of a server that we're using by looking it up by the UUID passed as
the parameter rather than by its address (of which it might have many, and
which may change).

Fixes: c35eccb1f614 ("[AFS]: Implement the CB.InitCallBackState3 operation.")
Signed-off-by: David Howells <dhowells@redhat.com>

diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 357de908df3ab258c6b0d2d3fbf8cdf94e7b1575..bcd13397bd59c85a2f54ff2100c2d9a451c5b42f 100644 (file)
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -341,7 +341,6 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call)
  */
 static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
 {
-       struct sockaddr_rxrpc srx;
        struct afs_server *server;
        struct afs_uuid *r;
        unsigned loop;
@@ -398,8 +397,9 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call)
 
        /* we'll need the file server record as that tells us which set of
         * vnodes to operate upon */
-       rxrpc_kernel_get_peer(call->net->socket, call->rxcall, &srx);
-       server = afs_find_server(call->net, &srx);
+       rcu_read_lock();
+       server = afs_find_server_by_uuid(call->net, call->request);
+       rcu_read_unlock();
        if (!server)
                return -ENOTCONN;
        call->cm_server = server;