#0  0x00007f0db9ae9965 in memcpy () from /lib/libc.so.6
#1  0x00007f0dba30cb36 in std::string::_Rep::_M_clone(std::allocator<char> const&, unsigned long) () from /usr/lib/libstdc++.so.6
#2  0x00007f0dba30d05c in std::string::reserve(unsigned long) ()
   from /usr/lib/libstdc++.so.6
#3  0x00007f0dba30d2d8 in std::string::append(char const*, unsigned long) ()
   from /usr/lib/libstdc++.so.6
#4  0x000000000082839a in leveldb::Block::Iter::Seek(leveldb::Slice const&) ()
#5  0x0000000000824123 in ?? ()
#6  0x0000000000824123 in ?? ()
#7  0x0000000000822203 in ?? ()
#8  0x0000000000813870 in ?? ()
#9  0x00000000007fce94 in LevelDBStore::LevelDBIteratorImpl::lower_bound(std::string const&) ()
#10 0x00000000007fbe03 in LevelDBStore::get(std::string const&, std::set<std::string, std::less<std::string>, std::allocator<std::string> > const&, std::map<std::string, ceph::buffer::list, std::less<std::string>, std::allocator<std::pair<std::string const, ceph::buffer::list> > >*) ()
#11 0x00000000007ef6f3 in DBObjectMap::check(std::ostream&) ()
#12 0x00000000007beedd in FileStore::sync_entry() ()
#13 0x00000000007d877d in FileStore::SyncThread::entry() ()
#14 0x00007f0dbb4b58ca in start_thread () from /lib/libpthread.so.0
#15 0x00007f0db9b3992d in clone () from /lib/libc.so.6