Core was generated by `/usr/bin/cosd -i 2 -c /etc/ceph/ceph.conf'.
Program terminated with signal 6, Aborted.
#0  0x00007f0f664077bb in raise () from /lib/libpthread.so.0
(gdb) bt
#0  0x00007f0f664077bb in raise () from /lib/libpthread.so.0
#1  0x000000000061f20b in handle_fatal_signal (signum=6) at common/signal.cc:70
#2  <signal handler called>
#3  0x00007f0f64fd7a75 in raise () from /lib/libc.so.6
#4  0x00007f0f64fdb5c0 in abort () from /lib/libc.so.6
#5  0x00000000005a833d in SyncEntryTimeout::finish(int) ()
#6  0x0000000000601d70 in SafeTimer::timer_thread (this=0xe56560) at common/Timer.cc:102
#7  0x000000000060559d in SafeTimerThread::entry (this=<value optimized out>) at common/Timer.cc:38
#8  0x00000000004823aa in Thread::_entry_func (arg=0x80a) at ./common/Thread.h:41
#9  0x00007f0f663fe9ca in start_thread () from /lib/libpthread.so.0
#10 0x00007f0f6508a70d in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()
(gdb)