dlm: reject messages from non-members

[linux-2.6-omap-h63xx.git] / fs / dlm / lock.c

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index d5e8ea1b4f75df225637cd4ab12a5b806cc1add9..c3b9fca17044f8eb8221691f3372fe042650ca5a 100644 (file)
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1,7 +1,7 @@
 /******************************************************************************
 *******************************************************************************
 **
-**  Copyright (C) 2005-2007 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -3643,6 +3643,13 @@ static void receive_lookup_reply(struct dlm_ls *ls, struct dlm_message *ms)
 
 static void _receive_message(struct dlm_ls *ls, struct dlm_message *ms)
 {
+       if (!dlm_is_member(ls, ms->m_header.h_nodeid)) {
+               log_debug(ls, "ignore non-member message %d from %d %x %x %d",
+                         ms->m_type, ms->m_header.h_nodeid, ms->m_lkid,
+                         ms->m_remid, ms->m_result);
+               return;
+       }
+
        switch (ms->m_type) {
 
        /* messages sent to a master node */