tree 8045873c76f120c3beca96a6db7d8fa316cf3eb2
parent 73d9f7eef3d98c3920e144797cc1894c6b005a1e
author Nathaniel Yazdani <n1ght.4nd.d4y@gmail.com> 1375675470 -0700
committer Sage Weil <sage@inktank.com> 1376095978 -0700

ceph: fix null pointer dereference

When register_session() is given an out-of-range argument for mds,
ceph_mdsmap_get_addr() will return a null pointer, which would be given to
ceph_con_open() & be dereferenced, causing a kernel oops. This fixes bug #4685
in the Ceph bug tracker <http://tracker.ceph.com/issues/4685>.

Signed-off-by: Nathaniel Yazdani <n1ght.4nd.d4y@gmail.com>
Reviewed-by: Sage Weil <sage@inktank.com>