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From Ishita Kapadiya <ishim...@gmail.com>
Subject [users@httpd] Segmentation fault error
Date Tue, 29 May 2012 22:11:06 GMT
Hi All,

I am using this configurations -

Solaris sparc 10/apache 2.2.22/openssl 1.0.0g/simteminder sso/mod-jk 1.30

we are curently running multiple apache servers from the apache's root dir.

Only one of the those instances throwing below errors in error_log :

[Tue May 19 16:14:06 2012] [notice] child pid 15729 exit signal Bus error (10)

[Tue May 19 17:46:24 2012] [notice] child pid 17114 exit signal
Segmentation fault (11), possible coredump in /tmp/core

we had recently upgraded apache to 2.2.22 version and since then we
are seeing above errors. I am not sure what could be the reason. the
other instances don't have any problems whereas all instances are
using the same modules!

So i have enabled core dump and here is the o/p -

pstack core.httpd.17114

core 'core.httpd.17114' of 17114:       /abc/apache-2.2.22/bin/httpd
-f /abc/apache-2.2.22/<instance name>/co
-----------------  lwp# 1 / thread# 1  --------------------
 fef45874 _read    (6, ffbff5e3, 1, 0, 10b4, fef73ac0) + c
 0006b714 ap_mpm_pod_check (d6800, 68764, 68f8c, 1b7ec0, 0, 1) + 18
 000697b4 child_main (0, 682dc, 0, fee58000, fef73700, fedf2a00) + 2d4
 00069930 make_child (9bc00, 0, 1, 9cc00, 9b400, 9c800) + 128
 0006a160 ap_mpm_run (fe720058, 4, 0, a, 1, 0) + 740
 00029bc8 main     (a7810, 99c00, 9bc00, 9bc00, a5808, 0) + 77c
 00028f7c _start   (0, 0, 0, 0, 0, 0) + 5c
-----------------  lwp# 2 / thread# 2  --------------------
 ff221518 ????????(), exit value = 0x00000000
        ** zombie (exited, not detached, not yet joined) **
-----------------  lwp# 3 / thread# 3  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fdf7bf1c, fdf7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8170, 0, 0, 9c800, 9c800, 0) + 10c
 ff221524 ???????? (1b8170, fdf7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 4 / thread# 4  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fde7bf1c, fde7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8190, 0, 0, 9c800, 9c800, 4) + 10c
 ff221524 ???????? (1b8190, fde7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 5 / thread# 5  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2f5af0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fdd7bf1c, fdd7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b81b0, 0, 0, 9c800, 9c800, 8) + 10c
 ff221524 ???????? (1b81b0, fdd7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 6 / thread# 6  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2e7ab8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fdc7bf1c, fdc7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b81d0, 0, 0, 9c800, 9c800, c) + 10c
 ff221524 ???????? (1b81d0, fdc7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 7 / thread# 7  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2e7ab8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fdb7bf1c, fdb7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b81f0, 0, 0, 9c800, 9c800, 10) + 10c
 ff221524 ???????? (1b81f0, fdb7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 8 / thread# 8  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fda7bf1c, fda7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8210, 0, 0, 9c800, 9c800, 14) + 10c
 ff221524 ???????? (1b8210, fda7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 9 / thread# 9  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2e7ab8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd97bf1c, fd97bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8230, 0, 0, 9c800, 9c800, 18) + 10c
 ff221524 ???????? (1b8230, fd97c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 10 / thread# 10  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd87bf1c, fd87bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8250, 0, 0, 9c800, 9c800, 1c) + 10c
 ff221524 ???????? (1b8250, fd87c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 11 / thread# 11  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd77bf1c, fd77bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8270, 0, 0, 9c800, 9c800, 20) + 10c
 ff221524 ???????? (1b8270, fd77c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 12 / thread# 12  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd67bf1c, fd67bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8290, 0, 0, 9c800, 9c800, 24) + 10c
 ff221524 ???????? (1b8290, fd67c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 13 / thread# 13  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd57bf1c, fd57bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b82b0, 0, 0, 9c800, 9c800, 28) + 10c
 ff221524 ???????? (1b82b0, fd57c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 14 / thread# 14  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd47bf1c, fd47bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b82d0, 0, 0, 9c800, 9c800, 2c) + 10c
 ff221524 ???????? (1b82d0, fd47c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 15 / thread# 15  --------------------
 0002e26c ap_escape_logitem (30f4f8, 76370, 309450, 1, 2000, 0) + 80
 00050068 config_log_transaction (336768, d4b18, 0, 9ce78, d2450, d3210) + 16c
 00050198 multi_log_transaction (336768, 30f478, c40, 0, 9bf54, d65c8) + 4c
 00030b80 ap_run_log_transaction (336768, c, 6, 336768, 0, 2e7d70) + 3c
 0005558c ap_process_request (336768, 30f478, 4, 336768, 9c818, 2e7dd0) + dc
 0005269c ap_process_http_connection (2e7d70, 2e7ac0, 2e7ac0, c,
9c818, d6680) + 10c
 000434e8 ap_run_process_connection (2e7d70, 2e7ac0, 2e7ac0, c,
2e7d68, 2eba88) + 3c
 00068edc worker_thread (1b82f0, 0, 0, 9c800, 9c800, 30) + 20c
 ff221524 ???????? (1b82f0, fd37c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 16 / thread# 16  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2e7ab8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd27bf1c, fd27bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8310, 0, 0, 9c800, 9c800, 34) + 10c
 ff221524 ???????? (1b8310, fd27c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 17 / thread# 17  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd17bf1c, fd17bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8330, 0, 0, 9c800, 9c800, 38) + 10c
 ff221524 ???????? (1b8330, fd17c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 18 / thread# 18  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fd07bf1c, fd07bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8350, 0, 0, 9c800, 9c800, 3c) + 10c
 ff221524 ???????? (1b8350, fd07c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 19 / thread# 19  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fcf7bf1c, fcf7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8370, 0, 0, 9c800, 9c800, 40) + 10c
 ff221524 ???????? (1b8370, fcf7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 20 / thread# 20  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fce7bf1c, fce7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8390, 0, 0, 9c800, 9c800, 44) + 10c
 ff221524 ???????? (1b8390, fce7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 21 / thread# 21  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fcd7bf1c, fcd7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b83b0, 0, 0, 9c800, 9c800, 48) + 10c
 ff221524 ???????? (1b83b0, fcd7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 22 / thread# 22  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fcc7bf1c, fcc7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b83d0, 0, 0, 9c800, 9c800, 4c) + 10c
 ff221524 ???????? (1b83d0, fcc7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 23 / thread# 23  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 2efad8) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fcb7bf1c, fcb7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b83f0, 0, 0, 9c800, 9c800, 50) + 10c
 ff221524 ???????? (1b83f0, fcb7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 24 / thread# 24  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fca7bf1c, fca7bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8410, 0, 0, 9c800, 9c800, 54) + 10c
 ff221524 ???????? (1b8410, fca7c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 25 / thread# 25  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc97bf1c, fc97bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8430, 0, 0, 9c800, 9c800, 58) + 10c
 ff221524 ???????? (1b8430, fc97c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 26 / thread# 26  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc87bf1c, fc87bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8450, 0, 0, 9c800, 9c800, 5c) + 10c
 ff221524 ???????? (1b8450, fc87c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 27 / thread# 27  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc77bf1c, fc77bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8470, 0, 0, 9c800, 9c800, 60) + 10c
 ff221524 ???????? (1b8470, fc77c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 28 / thread# 28  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc67bf1c, fc67bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8490, 0, 0, 9c800, 9c800, 64) + 10c
 ff221524 ???????? (1b8490, fc67c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 29 / thread# 29  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc57bf1c, fc57bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b84b0, 0, 0, 9c800, 9c800, 68) + 10c
 ff221524 ???????? (1b84b0, fc57c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 30 / thread# 30  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc47bf1c, fc47bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b84d0, 0, 0, 9c800, 9c800, 6c) + 10c
 ff221524 ???????? (1b84d0, fc47c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 31 / thread# 31  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc37bf1c, fc37bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b84f0, 0, 0, 9c800, 9c800, 70) + 10c
 ff221524 ???????? (1b84f0, fc37c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 32 / thread# 32  --------------------
 fef44a34 __lwp_park (1b7f58, 1b7f28, 0, 0, 0, 0) + 14
 fef3ea7c cond_wait_queue (1b7f58, 1b7f28, 0, 0, 0, 0) + 28
 fef3effc cond_wait (1b7f58, 1b7f28, 0, 2, 1, 34e1d0) + 10
 fef3f038 pthread_cond_wait (1b7f58, 1b7f28, 0, 1000, 0, 0) + 8
 0006b5e8 ap_queue_pop (1b7f08, fc27bf1c, fc27bf18, 0, 0, 1b80f8) + 64
 00068ddc worker_thread (1b8510, 0, 0, 9c800, 9c800, 74) + 10c
 ff221524 ???????? (1b8510, fc27c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 33 / thread# 33  --------------------
 fef44e94 _portfs  (11, 126998, 2, fc17bdf4, 0, 126a10) + 8
 ff21c860 call_port_getn (0, 126998, 2, fc17bdf4, ffffffff, ffffffff) + 7c
 ff21ce48 impl_pollset_poll (126928, ffffffff, ffffffff, fc17befc,
fc17bef8, 0) + 10c
 ff21c738 apr_pollset_poll (126928, ffffffff, ffffffff, fc17befc,
fc17bef8, a6378) + 1c
 000688b8 listener_thread (9c800, 0, 9c800, 9bc00, 85400, 1) + 14c
 ff221524 ???????? (1b8530, fc17c000, 0, 0, ff221518, 1)
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 35 / thread# 35  --------------------
 fef45760 __pollsys (fe07bdf8, 0, fe07be60, 0, 0, 0) + 8
 feee6cc0 pselect  (fe07bdf8, fef72528, fef72528, 0, fe07be60, 0) + 1c8
 feee7038 select   (0, 0, 0, 0, fe07bee8, 0) + a0
 fe5ead5c __1cIcm_sleep6FLl_v_ (1, 0, 0, 0, 0, 0) + 5c
 fe5ec020 ConnectionService (318810, b20c, a9c4, ade8, 318a38, fe6a70dc) + 350
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)
-----------------  lwp# 36 / thread# 36  --------------------
 fef45760 __pollsys (fab7be28, 0, fab7be90, 0, 0, 0) + 8
 feee6cc0 pselect  (fab7be28, fef72528, fef72528, 0, fab7be90, 0) + 1c8
 feee7038 select   (0, 0, 0, 0, fab7bf18, fab7bef0) + a0
 fe5d72d8 __1cPCSmWorkerThreadFSleep6MLl_v_ (0, 1, 0, 0, 0, 0) + 5c
 fe5a1b40 __1cPCSmAdminManagerRManageAgentThread6Fpv_1_ (0, 31a858, 1,
31a858, fe5a1af0, 33abd0) + 50
 fef44990 _lwp_start (0, 0, 0, 0, 0, 0)

could anybody please point me to the right direction and possible root
cause of the error? (I don't know how to use mdb which is installed on
our server)

Thanks

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