Ceph » CephFS

Core was generated by `./ceph-syn --syn makedirs 3 3 3'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f745ea57efb in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:41
41      ../nptl/sysdeps/unix/sysv/linux/pt-raise.c: No such file or directory.
(gdb) bt
#0  0x00007f745ea57efb in raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:41
#1  0x00000000009c0184 in reraise_fatal (signum=11) at global/signal_handler.cc:58
#2  0x00000000009c041d in handle_fatal_signal (signum=11) at global/signal_handler.cc:104
#3  <signal handler called>
#4  0x000000000077849a in Client::got_mds_push (this=0x184d010, mds=1) at client/Client.cc:1699
#5  0x000000000078484f in Client::handle_caps (this=0x184d010, m=0x18a85c0) at client/Client.cc:2917
#6  0x00000000007766e0 in Client::ms_dispatch (this=0x184d010, m=0x18a85c0) at client/Client.cc:1513
#7  0x00000000008d025a in Messenger::ms_deliver_dispatch (this=0x184b410, m=0x18a85c0) at msg/Messenger.h:504
#8  0x00000000008b6e04 in SimpleMessenger::DispatchQueue::entry (this=0x184b4f0) at msg/SimpleMessenger.cc:367
#9  0x00000000008b7090 in SimpleMessenger::dispatch_entry (this=0x184b410) at msg/SimpleMessenger.cc:384
#10 0x000000000086fb6e in SimpleMessenger::DispatchThread::entry (this=0x184b638) at msg/SimpleMessenger.h:807
#11 0x00000000008da0d1 in Thread::_entry_func (arg=0x184b638) at common/Thread.cc:41
#12 0x00007f745ea4fb50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#13 0x00007f745d4f26dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()
(gdb) f 4
#4  0x000000000077849a in Client::got_mds_push (this=0x184d010, mds=1) at client/Client.cc:1699
1699      s->seq++;
(gdb) p s
$1 = (MetaSession *) 0x0
(gdb) list
1694
1695    void Client::got_mds_push(int mds)
1696    {
1697      MetaSession *s = mds_sessions[mds];
1698
1699      s->seq++;
1700      ldout(cct, 10) << " mds." << mds << " seq now " << s->seq << dendl;
1701      if (s->closing)
1702        messenger->send_message(new MClientSession(CEPH_SESSION_REQUEST_CLOSE, s->seq),
1703                                s->inst);
(gdb) p mds
$2 = 1
(gdb) up
#5  0x000000000078484f in Client::handle_caps (this=0x184d010, m=0x18a85c0) at client/Client.cc:2917
2917      got_mds_push(mds);