ceph: fix possible null-pointer dereference in ceph_mdsmap_decode()

[linux-2.6-microblaze.git] / fs / ceph / mdsmap.c

diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index abd9af7..3c444b9 100644 (file)
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -394,9 +394,11 @@ void ceph_mdsmap_destroy(struct ceph_mdsmap *m)
 {
        int i;
 
-       for (i = 0; i < m->possible_max_rank; i++)
-               kfree(m->m_info[i].export_targets);
-       kfree(m->m_info);
+       if (m->m_info) {
+               for (i = 0; i < m->possible_max_rank; i++)
+                       kfree(m->m_info[i].export_targets);
+               kfree(m->m_info);
+       }
        kfree(m->m_data_pg_pools);
        kfree(m);
 }