permanent per month panic on 5.4-p4

[Oleg Palij]

Approximately once per month or two this server panics.
We use it for InterSystems Cache` (under linux emulation) and as samba-server (not heavy-loaded).

# dmesg -a 
can be found at http://www.dp.uz.gov.ua/dmesg.isc-cache
kernel config - http://www.dp.uz.gov.ua/kernel.isc-cache

# uname -a
FreeBSD isc-cache.dp.uz.gov.ua 5.4-RELEASE-p4 FreeBSD 5.4-RELEASE-p4 #1: Fri Nov  4 11:37:34 EET 2005     root at isc-cache.dp.uz.gov.ua:/usr/obj/usr/src/sys/ISC-CACHE_KERNEL  i386

# kgdb kernel.debug_5.4-p4_2005-11-04 vmcore.6 
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
#0  doadump () at pcpu.h:159
159     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) where
#0  doadump () at pcpu.h:159
#1  0xc050a102 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:410
#2  0xc050a3c8 in panic (fmt=0xc0656ebc "%s") at /usr/src/sys/kern/kern_shutdown.c:566
#3  0xc063ca14 in trap_fatal (frame=0xcbe69ae4, eva=0) at /usr/src/sys/i386/i386/trap.c:817
#4  0xc063c141 in trap (frame=
      {tf_fs = 24, tf_es = -1061093360, tf_ds = -1050869744, tf_edi = -1052353024, tf_esi = -1053737324, tf_ebp = -874079452, tf_isp = -874079472, tf_ebx = 0, tf_edx = -1057524608, tf_ecx = -1053737324, tf_eax = 0, tf_trapno = 12, tf_err = 0, tf_eip = -1068333178, tf_cs = 8, tf_eflags = 65606, tf_esp = -874079428, tf_ss = -1068492228}) at /usr/src/sys/i386/i386/trap.c:255
#5  0xc062f0fa in calltrap () at /usr/src/sys/i386/i386/exception.s:140
#6  0x00000018 in ?? ()
#7  0xc0c10010 in ?? ()
#8  0xc15d0010 in ?? ()
#9  0xc1465e00 in ?? ()
#10 0xc1313e94 in ?? ()
#11 0xcbe69b24 in ?? ()
#12 0xcbe69b10 in ?? ()
#13 0x00000000 in ?? ()
#14 0xc0f77480 in ?? ()
#15 0xc1313e94 in ?? ()
#16 0x00000000 in ?? ()
#17 0x0000000c in ?? ()
#18 0x00000000 in ?? ()
#19 0xc0528786 in turnstile_head (ts=0x0) at /usr/src/sys/kern/subr_turnstile.c:763
#20 0xc0501a3c in _mtx_unlock_sleep (m=0xc1313e94, opts=0, 
    file=0xc1db7ec2 "/usr/src/sys/modules/smbfs/../../netsmb/smb_iod.c", line=97)
    at /usr/src/sys/kern/kern_mutex.c:659
#21 0xc050188a in _mtx_unlock_flags (m=0x0, opts=0, 
    file=0xc1db7ec2 "/usr/src/sys/modules/smbfs/../../netsmb/smb_iod.c", line=97)
    at /usr/src/sys/kern/kern_mutex.c:364
#22 0xc1dabe27 in ?? ()
#23 0xc1313e94 in ?? ()
#24 0x00000000 in ?? ()
#25 0xc1db7ec2 in ?? ()
#26 0x00000061 in ?? ()
#27 0xc1465e00 in ?? ()
#28 0xc1a14800 in ?? ()
#29 0xc1313e00 in ?? ()
---Type <return> to continue, or q <return> to quit--- 
#30 0xcbe69b8c in ?? ()
#31 0xc1dabef6 in ?? ()
#32 0xc1465e00 in ?? ()
#33 0xc1465e00 in ?? ()
#34 0xc1465e00 in ?? ()
#35 0xcbe69ba4 in ?? ()
#36 0xc1dac766 in ?? ()
#37 0xc1465e00 in ?? ()
#38 0xc19abe00 in ?? ()
#39 0xc19abe88 in ?? ()
#40 0xc1313e00 in ?? ()
#41 0xcbe69bbc in ?? ()
#42 0xc1daa261 in ?? ()
#43 0xc1313e00 in ?? ()
#44 0xc1313e00 in ?? ()
#45 0x00000000 in ?? ()
#46 0xc1a14800 in ?? ()
#47 0xcbe69bd4 in ?? ()
#48 0xc1daa202 in ?? ()
#49 0xc1313e00 in ?? ()
#50 0xc1313e18 in ?? ()
#51 0xc19ff9e0 in ?? ()
#52 0xc1a14800 in ?? ()
#53 0xcbe69ce4 in ?? ()
#54 0xc1da8f12 in ?? ()
#55 0xc1313e00 in ?? ()
#56 0xc1313e00 in ?? ()
#57 0xc1313e18 in ?? ()
#58 0xc1a14800 in ?? ()
#59 0xc1db7cd9 in ?? ()
#60 0x00000000 in ?? ()
#61 0x00000000 in ?? ()
#62 0x00000001 in ?? ()
#63 0x00000000 in ?? ()
#64 0x00000000 in ?? ()
#65 0xc1313e00 in ?? ()
#66 0xc1da79c3 in ?? ()
#67 0xc15da288 in ?? ()
---Type <return> to continue, or q <return> to quit---
#68 0x00000000 in ?? ()
#69 0xcbe69c30 in ?? ()
#70 0x00000000 in ?? ()
#71 0xcbe69c2c in ?? ()
#72 0xc0519e6a in sched_choose () at /usr/src/sys/kern/sched_4bsd.c:1137
Previous frame inner to this frame (corrupt stack?)

What additional information can I provide?

Thanks!
-- 
Best regards,
Palij Oleg, ISC (Pridn railway) 
xmpp://malik@jabber.te.ua