-bash-3.00$ pstack core
core 'core' of 3279:    ldtp
-----------------  lwp# 1 / thread# 1  --------------------
 d0ba5b15 __pollsys (80f17e0, 2, 0, 0) + 15
 d0b5c4e7 poll     (80f17e0, 2, ffffffff) + 52
 d1d7ab61 g_main_context_iterate (809aaa8, 1, 1, 8093c68) + 399
 d1d7b19e g_main_loop_run (80a2000) + 1ba
 d24bf3b2 bonobo_main (d2580050, d25903d8, 8047208, d256c00c, d27fb7c0, 804724c) + 5e
 d256e9a4 cspi_main (d27fb7c0, 804724c, d27fdbf0, 804724c, 8055fa7, 1) + 18
 d256c00c SPI_event_main (1, 0, d1d20018, 1, d0ba7be5, d0b3331d) + 18
 08055fa7 main     (1, 8047278, 8047280) + 20b
 080553d4 _start   (1, 80473d0, 0, 80473d5, 8047409, 804741c) + 80
-----------------  lwp# 2 / thread# 2  --------------------
 d0ba5b15 __pollsys (d0aebfb4, 2, 0, 0) + 15
 d0b5c4e7 poll     (d0aebfb4, 2, ffffffff, d0ba3e3f) + 52
 08055c11 ldtp_server_thread (0) + b8
 d0ba482f _thr_setup (d0b02400) + 51
 d0ba4a80 _lwp_start (d0b02400, 0, 0, 0, 0, 0)
-----------------  lwp# 3 / thread# 3  --------------------
 0805a958 handle_client(), exit value = 0x00000001
        ** zombie (exited, not detached, not yet joined) **
-----------------  lwp# 4 / thread# 4  --------------------
 d0ba5b15 __pollsys (80a0158, 8, 0, 0) + 15
 d0b5c4e7 poll     (80a0158, 8, ffffffff) + 52
 d1d7ab61 g_main_context_iterate (80fb700, 1, 1, 80efec0) + 399
 d1d7b19e g_main_loop_run (80f6dc0) + 1ba
 d2147772 link_io_thread_fn (0) + 1e
 d1d94383 g_thread_create_proxy (80efec0) + 11b
 d0ba482f _thr_setup (d0860400) + 51
 d0ba4a80 _lwp_start (d0860400, 0, 0, 0, 0, 0)
-----------------  lwp# 5 / thread# 5  --------------------
 d0b35f30 strlen   (80818e6, d097df08, d097de10, 0) + 30
 d0b73a15 vsnprintf (d097de60, 1, 80818bc, d097df08) + 70
 d1d81f14 g_printf_string_upper_bound (80818bc, d097df08) + 28
 d1d9f4fb g_vasprintf (d097dec0, 80818bc, d097df08) + 2f
 d1d8fa57 g_strdup_vprintf (80818bc, d097df08) + 2b
 d1d81c51 g_print  (80818bc, 0, 8a, d1de4b4c) + 2d
 0807979c record_main (81014d0, 8a, 96, d097df9c) + 26
 0805a50c handle_request (81014d0, 80fdeb0, d097df9c, d097df9c) + 15a0
 0805acab handle_client (80fdf50) + 353
 d0ba482f _thr_setup (d0860000) + 51
 d0ba4a80 _lwp_start (d0860000, 0, 0, 0, 0, 0)

--------From dbx(gdb)
=>[1] __pollsys(0x80f17e0, 0x2, 0x0, 0x0), at 0xd0ba5b15
  [2] _pollsys(0x80f17e0, 0x2, 0x0, 0x0), at 0xd0b99519
  [3] _poll(0x80f17e0, 0x2, 0xffffffff), at 0xd0b5c4e7
  [4] g_main_context_iterate(0x809aaa8, 0x1, 0x1, 0x8093c68), at 0xd1d7ab61
  [5] g_main_loop_run(0x80a2000), at 0xd1d7b19e
  [6] bonobo_main(0xd2580050, 0xd25903d8, 0x8047208, 0xd256c00c, 0xd27fb7c0, 0x804724c), at 0xd24bf3b2
  [7] cspi_main(0xd27fb7c0, 0x804724c, 0xd27fdbf0, 0x804724c, 0x8055fa7, 0x1), at 0xd256e9a4
  [8] SPI_event_main(0x1, 0x0, 0xd1d20018, 0x1, 0xd0ba7be5, 0xd0b3331d), at 0xd256c00c
  [9] main(0x1, 0x8047278, 0x8047280), at 0x8055fa7