0> 2015-01-30 08:00:15.644464 7f3229507700 -1 *** Caught signal (Segmentation fault) **
 in thread 7f3229507700

 ceph version 0.91 (725d66098c98c2008b5fa07538325cc6816ca4a1)
 1: /usr/bin/ceph-mon() [0x8ea1a5]
 2: /lib64/libc.so.6() [0x316e4329a0]
 3: (CryptoKey::encrypt(CephContext*, ceph::buffer::list const&, ceph::buffer::list&, std::string&) const+0x41) [0x6c2c51]
 4: (void encode_encrypt_enc_bl<CephXServiceTicketInfo>(CephContext*, CephXServiceTicketInfo const&, CryptoKey const&, ceph::buffer::list&, std::string&)+0x26a) [0x6bf8ea]
 5: (cephx_build_service_ticket_blob(CephContext*, CephXSessionAuthInfo&, CephXTicketBlob&)+0x2b2) [0x6bb002]
 6: (Monitor::ms_get_authorizer(int, AuthAuthorizer**, bool)+0x39d) [0x57755d]
 7: (SimpleMessenger::get_authorizer(int, bool)+0x4b) [0x8b3e5b]
 8: (Pipe::connect()+0x1975) [0x8d8625]
 9: (Pipe::writer()+0x9f3) [0x8db713]
 10: (Pipe::Writer::entry()+0xd) [0x8de4ed]
 11: /lib64/libpthread.so.0() [0x316ec079d1]
 12: (clone()+0x6d) [0x316e4e8b7d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.