Ceph » RADOS

hello,
i've failed osd process few times by executing :
ceph tell osd.55 injectargs '--lockdep=false'

all times this lines was in log file:

2017-11-08 16:55:01.785087 7f729d069700 0 lockdep stop
2017-11-08 16:55:01.878548 7f7340877700 -1 ** Caught signal (Segmentation fault) *
in thread 7f7340877700 thread_name:ms_pipe_read

ceph version 10.2.5 (c461ee19ecbc0c5c330aca20f7392c9a00730367)
 1: (()+0x91a54a) [0x7f735563754a]
 2: (()+0xf370) [0x7f7353452370]
 3: (lockdep_will_lock(char const*, int, bool)+0x58) [0x7f73557b3c68]
 4: (Mutex::Lock(bool)+0xc0) [0x7f73556e5500]
 5: (OSD::handle_osd_ping(MOSDPing*)+0x46e) [0x7f73550a8d0e]
 6: (OSD::heartbeat_dispatch(Message*)+0x3cb) [0x7f73550aa40b]
 7: (DispatchQueue::fast_dispatch(Message*)+0x76) [0x7f73557f49d6]
 8: (Pipe::reader()+0x1dff) [0x7f735583168f]
 9: (Pipe::Reader::entry()+0xd) [0x7f73558391ad]
 10: (()+0x7dc5) [0x7f735344adc5]
 11: (clone()+0x6d) [0x7f7351ad576d]
 NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.

ceph version 10.2.5