Ceph

 ceph version 0.37-237-gb3b45bf (commit:b3b45bf98109a70162401b47c880f046dfac1c61)
 1: /usr/bin/ceph-osd() [0x5fc719]
 2: (()+0xef60) [0x7f3c98154f60]
 3: (std::_Rb_tree_increment(std::_Rb_tree_node_base*)+0x13) [0x7f3c97171173]
 4: (OSD::update_heartbeat_peers()+0x900) [0x53ca80]
 5: (OSD::handle_pg_log(MOSDPGLog*)+0x41d) [0x5594cd]
 6: (OSD::_dispatch(Message*)+0x57d) [0x55a00d]
 7: (OSD::ms_dispatch(Message*)+0x101) [0x55ab91]
 8: (SimpleMessenger::dispatch_entry()+0x869) [0x5a30a9]
 9: (SimpleMessenger::DispatchThread::entry()+0x1c) [0x4a857c]
 10: (()+0x68ba) [0x7f3c9814c8ba]
 11: (clone()+0x6d) [0x7f3c969d502d]

Core was generated by `/usr/bin/ceph-osd -i 34 -c /etc/ceph/ceph.conf'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f3c98154e2b in raise () from /lib/libpthread.so.0
(gdb) bt
#0  0x00007f3c98154e2b in raise () from /lib/libpthread.so.0
#1  0x00000000005fc428 in reraise_fatal (signum=30992) at global/signal_handler.cc:59
#2  0x00000000005fc951 in handle_fatal_signal (signum=<value optimized out>) at global/signal_handler.cc:106
#3  <signal handler called>
#4  0x00007f3c97171173 in std::_Rb_tree_increment(std::_Rb_tree_node_base*) () from /usr/lib/libstdc++.so.6
#5  0x000000000053ca80 in std::_Rb_tree_iterator<std::pair<int const, PG::Info> >::operator++ (this=0x24aa000) at /usr/include/c++/4.4/bits/stl_tree.h:184
#6  OSD::update_heartbeat_peers (this=0x24aa000) at osd/OSD.cc:1476
#7  0x00000000005594cd in OSD::handle_pg_log (this=0x24aa000, m=0x28de200) at osd/OSD.cc:4413
#8  0x000000000055a00d in OSD::_dispatch (this=0x24aa000, m=0x28de200) at osd/OSD.cc:2863
#9  0x000000000055ab91 in OSD::ms_dispatch (this=0x24aa000, m=<value optimized out>) at osd/OSD.cc:2676
#10 0x00000000005a30a9 in Messenger::ms_deliver_dispatch (this=0x2497a00) at msg/Messenger.h:102
#11 SimpleMessenger::dispatch_entry (this=0x2497a00) at msg/SimpleMessenger.cc:356
#12 0x00000000004a857c in SimpleMessenger::DispatchThread::entry (this=0x2497e88) at msg/SimpleMessenger.h:549
#13 0x00007f3c9814c8ba in start_thread () from /lib/libpthread.so.0
#14 0x00007f3c969d502d in clone () from /lib/libc.so.6

osd.34 on benjamin