GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /usr/bin/ceph-mds...(no debugging symbols found)...done.
[New LWP 21160]
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warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/ceph-mds -i b --pid-file /var/run/ceph/mds.b.pid -c /tmp/ceph.conf.244'.
Program terminated with signal 6, Aborted.
#0  0xb7778424 in __kernel_vsyscall ()
(gdb) bt
#0  0xb7778424 in __kernel_vsyscall ()
#1  0xb75fadde in raise () from /lib/i386-linux-gnu/libpthread.so.0
#2  0x08486670 in ?? ()
#3  <signal handler called>
#4  0xb7778424 in __kernel_vsyscall ()
#5  0xb72d41df in raise () from /lib/i386-linux-gnu/libc.so.6
#6  0xb72d7825 in abort () from /lib/i386-linux-gnu/libc.so.6
#7  0xb754813d in __gnu_cxx::__verbose_terminate_handler() ()
   from /usr/lib/i386-linux-gnu/libstdc++.so.6
#8  0xb7545ed3 in ?? () from /usr/lib/i386-linux-gnu/libstdc++.so.6
#9  0xb7545f0f in std::terminate() ()
   from /usr/lib/i386-linux-gnu/libstdc++.so.6
#10 0xb754605e in __cxa_throw () from /usr/lib/i386-linux-gnu/libstdc++.so.6
#11 0x080d1a8a in ?? ()
#12 0x0811a3b9 in EMetaBlob::replay(MDS*, LogSegment*) ()
#13 0x081215de in EUpdate::replay(MDS*) ()
#14 0x08310e77 in MDLog::_replay_thread() ()
#15 0x08102432 in MDLog::ReplayThread::entry() ()
#16 0x083ff3ff in Thread::_entry_func(void*) ()
#17 0xb75f2d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb7394d3e in clone () from /lib/i386-linux-gnu/libc.so.6
(gdb)