With emacs24-dbg installed: 
0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
81	../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2cad05b72 in poll (__timeout=-1, __nfds=1, __fds=0x7fff7b15faa0)
    at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x2c8e930, cond=cond@entry=0x2c8e970, 
    vector=vector@entry=0x0, count=count@entry=0x0)
    at ../../src/xcb_conn.c:447
#3  0x00007fe2cad0764f in xcb_wait_for_event (c=0x2c8e930)
    at ../../src/xcb_in.c:622
#4  0x00007fe2d19b93a8 in _XReadEvents (dpy=dpy@entry=0x2c8b930)
    at ../../src/xcb_io.c:401
#5  0x00007fe2d19a1889 in XIfEvent (dpy=0x2c8b930, event=0x7fff7b15fcd0, 
    predicate=0x7fe2d19e7f70 <_CheckCMEvent>, 
    arg=0x2db7c00 "\240%\313\321\342\177") at ../../src/IfEvent.c:68
#6  0x00007fe2d19e86e7 in _XimXRead (im=0x2db7c00, 
    recv_buf=0x7fff7b1608e0 "", buf_len=2048, ret_len=0x7fff7b15fdfc)
    at ../../../../modules/im/ximcp/imTrX.c:476
#7  0x00007fe2d19e9317 in _XimReadData (im=im@entry=0x2db7c00, 
    len=len@entry=0x7fff7b15fe5e, buf=buf@entry=0x7fff7b1608e0 "", 
    buf_size=buf_size@entry=2048)
    at ../../../../modules/im/ximcp/imTransR.c:165
#8  0x00007fe2d19e95f1 in _XimRead (im=im@entry=0x2db7c00, 
    len=len@entry=0x7fff7b15feee, buf=buf@entry=0x7fff7b1608e0 "", 
---Type <return> to continue, or q <return> to quit---
    buf_size=buf_size@entry=2048, 
    predicate=predicate@entry=0x7fe2d19d74d0 <_XimSetICValuesCheck>, 
    arg=arg@entry=0x2ec0480 "@%\313\321\342\177")
    at ../../../../modules/im/ximcp/imTransR.c:235
#9  0x00007fe2d19d81a6 in _XimProtoSetICValues (xic=0x2ec0480, 
    arg=<optimized out>) at ../../../../modules/im/ximcp/imDefIc.c:778
#10 0x00007fe2d19c60ad in XSetICValues (ic=0x2ec0480)
    at ../../../src/xlibi18n/ICWrap.c:332
#11 0x00000000004cf585 in xic_set_preeditarea (w=<optimized out>, 
    x=<optimized out>, y=<optimized out>) at xfns.c:2107
#12 0x00000000004be352 in x_draw_window_cursor (w=0x1174ec8, 
    glyph_row=0xc8fcd0, x=0, y=361, cursor_type=FILLED_BOX_CURSOR, 
    cursor_width=50550864, on_p=true, active_p=true) at xterm.c:7331
#13 0x0000000000459c22 in display_and_set_cursor (w=0x1174ec8, 
    on=on@entry=true, hpos=0, vpos=19, x=0, y=361) at xdisp.c:27572
#14 0x00000000004bccdc in x_update_window_end (w=0x1174ec8, 
    cursor_on_p=<optimized out>, mouse_face_overwritten_p=<optimized out>)
    at xterm.c:582
#15 0x000000000041de46 in update_window (w=w@entry=0x1174ec8, 
    force_p=<optimized out>, force_p@entry=true) at dispnew.c:3535
#16 0x000000000041f11b in update_window_tree (w=w@entry=0x1174ec8, 
    force_p=force_p@entry=true) at dispnew.c:3210
---Type <return> to continue, or q <return> to quit---
#17 0x000000000042147d in update_frame (f=0x1173eb8, force_p=<optimized out>, 
    inhibit_hairy_id_p=<optimized out>) at dispnew.c:3099
#18 0x000000000045296c in redisplay_internal () at xdisp.c:14030
#19 0x0000000000452ef5 in redisplay () at xdisp.c:13207
#20 0x00000000004f5243 in read_char (commandflag=1, map=map@entry=54464966, 
    prev_event=12333362, 
    used_mouse_menu=used_mouse_menu@entry=0x7fff7b16268b, 
    end_time=end_time@entry=0x0) at keyboard.c:2752
#21 0x00000000004f615f in read_key_sequence (
    keybuf=keybuf@entry=0x7fff7b162760, prompt=12333362, 
    dont_downcase_last=dont_downcase_last@entry=false, 
    can_return_switch_frame=can_return_switch_frame@entry=true, 
    fix_current_buffer=fix_current_buffer@entry=true, 
    prevent_redisplay=prevent_redisplay@entry=false, bufsize=30)
    at keyboard.c:9088
#22 0x00000000004f7ed0 in command_loop_1 () at keyboard.c:1452
#23 0x000000000055aaa7 in internal_condition_case (
    bfun=bfun@entry=0x4f7cd0 <command_loop_1>, handlers=<optimized out>, 
    hfun=hfun@entry=0x4eede0 <cmd_error>) at eval.c:1348
#24 0x00000000004ea3ee in command_loop_2 (ignore=ignore@entry=12333362)
    at keyboard.c:1177
#25 0x000000000055a98b in internal_catch (tag=12380834, 
---Type <return> to continue, or q <return> to quit---
    func=func@entry=0x4ea3d0 <command_loop_2>, arg=12333362) at eval.c:1112
#26 0x00000000004ee9f7 in command_loop () at keyboard.c:1156
#27 recursive_edit_1 () at keyboard.c:777
#28 0x00000000004eed10 in Frecursive_edit () at keyboard.c:848
#29 0x0000000000418509 in main (argc=0, argv=0x7fff7b162ac8) at emacs.c:1646
(gdb) thread 2
[Switching to thread 2 (Thread 0x7fe2be987700 (LWP 30001))]
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
81	in ../sysdeps/unix/syscall-template.S
(gdb) bt
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2d212214c in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0x7fe2b00010c0, timeout=-1, context=0x2dc6430)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x2dc6430, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:3803
#3  0x00007fe2d212225c in g_main_context_iteration (context=0x2dc6430, 
    may_block=1) at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:3869
#4  0x00007fe2be98f27d in ?? ()
   from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5  0x00007fe2d2148b95 in g_thread_proxy (data=0x2e62850)
    at /build/buildd/glib2.0-2.43.2/./glib/gthread.c:764
#6  0x00007fe2ce5570a5 in start_thread (arg=0x7fe2be987700)
    at pthread_create.c:309
#7  0x00007fe2ce28490d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 3
[Switching to thread 3 (Thread 0x7fe2bffff700 (LWP 30000))]
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
81	in ../sysdeps/unix/syscall-template.S
(gdb) bt
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2d212214c in g_main_context_poll (priority=2147483647, n_fds=2, 
    fds=0x7fe2b80010c0, timeout=-1, context=0x2cc2b70)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:4103
#2  g_main_context_iterate (context=0x2cc2b70, block=block@entry=1, 
    dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:3803
#3  0x00007fe2d21224d2 in g_main_loop_run (loop=0x2cc2b00)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:4002
#4  0x00007fe2d2715d56 in gdbus_shared_thread_func (user_data=0x2cc2b40)
    at /build/buildd/glib2.0-2.43.2/./gio/gdbusprivate.c:273
#5  0x00007fe2d2148b95 in g_thread_proxy (data=0x13c0cf0)
    at /build/buildd/glib2.0-2.43.2/./glib/gthread.c:764
#6  0x00007fe2ce5570a5 in start_thread (arg=0x7fe2bffff700)
    at pthread_create.c:309
#7  0x00007fe2ce28490d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 4
[Switching to thread 4 (Thread 0x7fe2c4f05700 (LWP 29999))]
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
81	in ../sysdeps/unix/syscall-template.S
(gdb) bt
#0  0x00007fe2ce27a45d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe2d212214c in g_main_context_poll (priority=2147483647, n_fds=1, 
    fds=0x7fe2c00008e0, timeout=-1, context=0x13bfeb0)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:4103
#2  g_main_context_iterate (context=context@entry=0x13bfeb0, 
    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:3803
#3  0x00007fe2d212225c in g_main_context_iteration (context=0x13bfeb0, 
    may_block=may_block@entry=1)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:3869
#4  0x00007fe2d2122299 in glib_worker_main (data=<optimized out>)
    at /build/buildd/glib2.0-2.43.2/./glib/gmain.c:5614
#5  0x00007fe2d2148b95 in g_thread_proxy (data=0x13c0800)
    at /build/buildd/glib2.0-2.43.2/./glib/gthread.c:764
#6  0x00007fe2ce5570a5 in start_thread (arg=0x7fe2c4f05700)
    at pthread_create.c:309
#7  0x00007fe2ce28490d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) thread 5
Thread ID 5 not known.