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Thread 2 (Thread 1476):
#0  0x00007f283c92d2a2 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f283c926d89 in memmove () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007f28392bc5cc in ChertTable::add_item_to_block(unsigned char*, Item_wr, int) () from /usr/lib/libxapian.so.22
No symbol table info available.
#3  0x00007f28392be052 in ChertTable::add_item(Item_wr, int) () from /usr/lib/libxapian.so.22
No symbol table info available.
#4  0x00007f28392c1ebb in ChertTable::add_kt(bool) () from /usr/lib/libxapian.so.22
No symbol table info available.
#5  0x00007f28392c2590 in ChertTable::add(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >, bool) () from /usr/lib/libxapian.so.22
No symbol table info available.
#6  0x00007f28392b401e in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#7  0x00007f283929f7aa in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#8  0x00007f283929f8ae in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#9  0x00007f283921727f in Xapian::Database::allterms_begin(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const () from /usr/lib/libxapian.so.22
No symbol table info available.
#10 0x00007f2839361190 in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#11 0x00007f2839363d32 in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#12 0x00007f283936758e in Xapian::QueryParser::Internal::parse_query(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () from /usr/lib/libxapian.so.22
No symbol table info available.
#13 0x00007f283935e1d4 in Xapian::QueryParser::parse_query(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) () from /usr/lib/libxapian.so.22
No symbol table info available.
#14 0x00007f28396406d8 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so
No symbol table info available.
#15 0x000000000049b3a8 in PyEval_EvalFrameEx ()
No symbol table info available.
#16 0x000000000049d325 in PyEval_EvalCodeEx ()
No symbol table info available.
#17 0x0000000000496a92 in PyEval_EvalFrameEx ()
No symbol table info available.
#18 0x000000000049d325 in PyEval_EvalCodeEx ()
No symbol table info available.
#19 0x00000000004c46f8 in ?? ()
No symbol table info available.
#20 0x000000000045d864 in PyObject_Call ()
No symbol table info available.
#21 0x0000000000498461 in PyEval_EvalFrameEx ()
No symbol table info available.
#22 0x000000000049d885 in PyEval_EvalCodeEx ()
No symbol table info available.
#23 0x00000000004c4526 in ?? ()
No symbol table info available.
#24 0x000000000045d864 in PyObject_Call ()
No symbol table info available.
#25 0x000000000045f43f in ?? ()
No symbol table info available.
#26 0x000000000045ddf2 in PyObject_CallFunctionObjArgs ()
No symbol table info available.
#27 0x00007f283ac29595 in ?? () from /usr/lib/pymodules/python2.7/_dbus_bindings.so
No symbol table info available.
#28 0x00007f283ac2a215 in ?? () from /usr/lib/pymodules/python2.7/_dbus_bindings.so
No symbol table info available.
#29 0x00007f283a9f8a01 in ?? () from /lib/x86_64-linux-gnu/libdbus-1.so.3
No symbol table info available.
#30 0x00007f283a9eab10 in dbus_connection_dispatch () from /lib/x86_64-linux-gnu/libdbus-1.so.3
No symbol table info available.
#31 0x00007f2839f7d655 in ?? () from /usr/lib/libdbus-glib-1.so.2
No symbol table info available.
#32 0x00007f283b6fabcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#33 0x00007f283b6fb3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#34 0x00007f283b6fb9f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#35 0x00007f283c00f051 in ?? () from /usr/lib/python2.7/dist-packages/glib/_glib.so
No symbol table info available.
#36 0x00000000004970ef in PyEval_EvalFrameEx ()
No symbol table info available.
#37 0x000000000049d325 in PyEval_EvalCodeEx ()
No symbol table info available.
#38 0x00000000004ecb02 in PyEval_EvalCode ()
No symbol table info available.
#39 0x00000000004fdc74 in ?? ()
No symbol table info available.
#40 0x000000000042c182 in PyRun_FileExFlags ()
No symbol table info available.
#41 0x000000000042cb4a in PyRun_SimpleFileExFlags ()
No symbol table info available.
#42 0x0000000000418c9e in Py_Main ()
No symbol table info available.
#43 0x00007f283c8c0eff in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#44 0x00000000004c62b1 in _start ()
No symbol table info available.
.
Thread 1 (Thread 1585):
#0  0x00007f28392bc759 in ChertTable::form_key(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) const () from /usr/lib/libxapian.so.22
No symbol table info available.
#1  0x00007f28392c20d9 in ChertTable::get_exact_entry(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&) const () from /usr/lib/libxapian.so.22
No symbol table info available.
#2  0x00007f28392aedb6 in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#3  0x00007f28392b3e23 in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#4  0x00007f283929f7aa in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#5  0x00007f283929f991 in ?? () from /usr/lib/libxapian.so.22
No symbol table info available.
#6  0x00007f28396222a9 in ?? () from /usr/lib/python2.7/dist-packages/xapian/_xapian.so
No symbol table info available.
#7  0x000000000049b3a8 in PyEval_EvalFrameEx ()
No symbol table info available.
#8  0x000000000049d325 in PyEval_EvalCodeEx ()
No symbol table info available.
#9  0x00000000004c46f8 in ?? ()
No symbol table info available.
#10 0x000000000045d864 in PyObject_Call ()
No symbol table info available.
#11 0x0000000000498461 in PyEval_EvalFrameEx ()
No symbol table info available.
#12 0x0000000000496dbf in PyEval_EvalFrameEx ()
No symbol table info available.
#13 0x0000000000496dbf in PyEval_EvalFrameEx ()
No symbol table info available.
#14 0x000000000049d325 in PyEval_EvalCodeEx ()
No symbol table info available.
#15 0x00000000004c4526 in ?? ()
No symbol table info available.
#16 0x000000000045d864 in PyObject_Call ()
No symbol table info available.
#17 0x000000000045f43f in ?? ()
No symbol table info available.
#18 0x000000000045d864 in PyObject_Call ()
No symbol table info available.
#19 0x0000000000495d46 in PyEval_CallObjectWithKeywords ()
No symbol table info available.
#20 0x00000000005046f2 in ?? ()
No symbol table info available.
#21 0x00007f283dac2d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#22 0x00007f283c98804d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#23 0x0000000000000000 in ?? ()
No symbol table info available.