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Date:      Fri, 22 Oct 2004 00:46:50 +0200
From:      "Tom Jensen" <tom@motd.dk>
To:        "'Robert Watson'" <rwatson@freebsd.org>
Cc:        freebsd-current@freebsd.org
Subject:   RE: Machine hangs(Beta7), only reset button works
Message-ID:  <20041021223131.3569762EF@bart.motd.dk>
In-Reply-To: <Pine.NEB.3.96L.1041021074346.10079K-100000@fledge.watson.org>

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Ok, I managed to break into the with a break over serial console, attached
is some info from KDB (please note that I have no knowledge about using the
debugger)

I also noticed that I don't have "makeoptions     DEBUG=-g" in my kernel
conf so I have no debug kernel. I rebuild my kernel ASAP so I'm able to
provide more info sometime tomorrow.

Please let me know if there is more info needed.

- Tom

-----Original Message-----
From: owner-freebsd-current@freebsd.org
[mailto:owner-freebsd-current@freebsd.org] On Behalf Of Robert Watson
Sent: 21. oktober 2004 13:46
To: Tom Jensen
Cc: freebsd-current@freebsd.org
Subject: Re: Machine hangs(Beta7), only reset button works


On Thu, 21 Oct 2004, Tom Jensen wrote:

> I've been seeing a pretty strange problem lately with my server. 
> 
> The box completely freeze typically when it's done running the first 
> part of my backup script, resulting in no possibility to login on the 
> console or by SSH, the freeze even happens when I'm sitting in a 
> terminal and working.
> 
> There is no indication in log files etc. about what's causing the 
> problem and it's not breaking into debugger either :-(

This should probably be in debugging lore somewhere, but I've observed that
it's often possible to break into the debugger using a break over serial
console when it's not possible to break in using syscons.  This is because
syscons requires the Giant lock, so if the freeze happens because a thread
is spinning while holding Giant, you can't get in.  This needs to be fixed,
but hasn't yet been fixed, so in the mean time often useful advice is to use
a serial console to generate the break.

If you still can't get into the debugger, you might try some of the various
watchdog drivers -- some hardware comes with built in watchdog parts, such
as ichwd(4), or you could try options MP_WATCHDOG on an SMP box if you're
willing to dedicate a CPU to running as a watchdog for the other cpu(s).

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Principal Research Scientist, McAfee Research


> 
> The backup script is really simple, creating a .tgz file of a given 
> directory, mounting a windows share (mount_smbfs) and copying the 
> file. The script is run by cron six times (start at the same time) in 
> six different directories, this results in the box freezes after the 
> tar processes finishes.
> 
> Attached is the dmesg.boot and the latest top, don't know if it's any 
> use but it's seems rather strange that a lot of processes are in a 
> STATE usf (not sure what this means but I don't sees this when the box 
> is running
> normally)
> 
> The kernel is mostly a generic with the following modifications:
> 
> options         IPFIREWALL
> options         IPFIREWALL_VERBOSE
> options         IPFIREWALL_VERBOSE_LIMIT=400
> options         IPDIVERT
> options         IPSEC
> options         IPSEC_ESP
> options         IPSEC_DEBUG
> device ath
> device ath_hal
> options         KDB
> options         DDB          
> 
> bash-2.05b# uname -a
> FreeBSD bart.motd.dk 5.3-BETA7 FreeBSD 5.3-BETA7 #6: Tue Oct 19 00:36:59
> CEST 2004     root@bart.motd.dk:/usr/obj/usr/src/sys/GW  i386
> 
> Any more info needed please let me know.
> 
> Best regards
> 
> - Tom
> 
> 

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KDB: enter: Line break on console
[thread 100003]
Stopped at      kdb_enter+0x2b: nop

db> ps
  pid   proc     uarea   uid  ppid  pgrp  flag   stat  wmesg    wchan  =
cmd
 1138 c1ac0a98 ced58000    0   966  1138 4000002 [SLPQ ufs =
0xc15bfd0c][SLP] bash
 1137 c182954c cee3e000    0  1097  1080 0004000 [SLPQ ufs =
0xc1f33e14][SLP] mount_smbfs
 1133 c1839c5c cee4b000    0  1096  1084 0004000 [SLPQ ufs =
0xc1f74e14][SLP] mount_smbfs
 1132 c1ac0c5c ced59000    0  1091  1079 0004000 [SLPQ ufs =
0xc2069afc][SLP] mount_smbfs
 1131 c15a7000 ce568000    0  1118  1118 0004100 [SLPQ piperd =
0xc1bc3780][SLP] postdrop
 1130 c1bf51c4 cedcd000    0  1115  1115 0004100 [SLPQ piperd =
0xc1bc3900][SLP] postdrop
 1129 c1839388 cee46000    0  1116  1116 0004100 [SLPQ piperd =
0xc1bc3a80][SLP] postdrop
 1128 c1bf5710 cedd0000    0  1114  1114 0004100 [SLPQ piperd =
0xc1bc3d80][SLP] postdrop
 1127 c18291c4 cee00000    0  1117  1117 0004100 [SLPQ piperd =
0xc1bc3c00][SLP] postdrop
 1126 c1bf254c ced8a000    0  1113  1113 0004100 [SLPQ piperd =
0xc182f480][SLP] postdrop
 1118 c1ac3c5c ced62000    0  1070  1118 0004000 [SLPQ piperd =
0xc182f600][SLP] sendmail
 1117 c18391c4 cee45000    0  1068  1117 0004000 [SLPQ piperd =
0xc184cc00][SLP] sendmail
 1116 c1bf21c4 ced88000    0  1071  1116 0004000 [SLPQ piperd =
0xc184cd80][SLP] sendmail
 1115 c1829388 cee3d000    0  1072  1115 0004000 [SLPQ piperd =
0xc184ca80][SLP] sendmail
 1114 c1839000 cee44000    0  1069  1114 0004000 [SLPQ piperd =
0xc184c780][SLP] sendmail
 1113 c1839710 cee48000    0  1073  1113 0004000 [SLPQ piperd =
0xc184c900][SLP] sendmail
 1097 c1ac3a98 ced61000    0  1080  1080 0004000 [SLPQ wait =
0xc1ac3a98][SLP] sh
 1096 c1829a98 cee41000    0  1084  1084 0004000 [SLPQ wait =
0xc1829a98][SLP] sh
 1094 c1829e20 cee43000    0  1085  1085 0004000 [SLPQ ufs =
0xc15bfd0c][SLP] sh
 1091 c1ac3e20 ced63000    0  1079  1079 0004000 [SLPQ wait =
0xc1ac3e20][SLP] sh
 1090 c1bf5000 cedcc000    0  1077  1077 0004000 [SLPQ ufs =
0xc15bfd0c][SLP] sh
 1088 c1ec8000 ced70000    0  1078  1078 0004000 [SLPQ ufs =
0xc15bfd0c][SLP] sh
 1085 c17ef8d4 cec88000    0  1073  1085 0004000 [SLPQ wait =
0xc17ef8d4][SLP] sh
 1084 c1bf2e20 cedcb000    0  1068  1084 0004000 [SLPQ wait =
0xc1bf2e20][SLP] sh
 1080 c1bf2c5c cedca000    0  1071  1080 0004000 [SLPQ wait =
0xc1bf2c5c][SLP] sh
 1079 c1bf5c5c cedd3000    0  1072  1079 0004000 [SLPQ wait =
0xc1bf5c5c][SLP] sh
 1078 c1829c5c cee42000    0  1070  1078 0004000 [SLPQ wait =
0xc1829c5c][SLP] sh
 1077 c1ac0000 cec56000    0  1069  1077 0004000 [SLPQ wait =
0xc1ac0000][SLP] sh
 1073 c1ec8c5c ceeac000    0   586   586 0000000 [SLPQ piperd =
0xc184c000][SLP] cron
 1072 c1ec8a98 ceeab000    0   586   586 0000000 [SLPQ piperd =
0xc15db900][SLP] cron
 1071 c1ec88d4 ceeaa000    0   586   586 0000000 [SLPQ piperd =
0xc15db480][SLP] cron
 1070 c1ec8388 cee87000    0   586   586 0000000 [SLPQ piperd =
0xc1bb8780][SLP] cron
 1069 c1ec854c cee89000    0   586   586 0000000 [SLPQ piperd =
0xc1bb8480][SLP] cron
 1068 c1ec8710 ceea9000    0   586   586 0000000 [SLPQ piperd =
0xc15db780][SLP] cron
 1067 c1ec81c4 cee85000    0   876  1067 0004002 [SLPQ select =
0xc091b304][SLP] top
  998 c1bf2388 ced89000    0   996   998 0004002 [SLPQ ttyin =
0xc152ba10][SLP] bash
  996 c1bf5a98 cedd2000    0   995   996 0004002 [SLPQ pause =
0xc1bf5ad0][SLP] csh
  995 c18298d4 cee40000 1001   994   995 0004102 [SLPQ wait =
0xc18298d4][SLP] su
  994 c1829000 ced65000 1001   993   994 0004002 [SLPQ wait =
0xc1829000][SLP] bash
  993 c1829710 cee3f000 1001   991   991 0000100 [SLPQ select =
0xc091b304][SLP] sshd
  991 c1bf28d4 cedc8000    0   571   991 0000100 [SLPQ sbwait =
0xc15bb974][SLP] sshd
  966 c1bf2a98 cedc9000    0   964   966 0004002 [SLPQ wait =
0xc1bf2a98][SLP] bash
  964 c17ef54c cec86000    0   854   964 0004002 [SLPQ pause =
0xc17ef584][SLP] csh
  918 c1bf554c cedcf000 1001   909   713 0004000 [SLPQ select =
0xc091b304][SLP] imapd
  909 c1bf5388 cedce000    0   713   713 0004001 [SLPQ select =
0xc091b304][SLP] couriertls
  876 c175654c cec38000    0   874   876 0004002 [SLPQ wait =
0xc175654c][SLP] bash
  874 c1ac0710 ced27000    0   873   874 0004002 [SLPQ pause =
0xc1ac0748][SLP] csh
  873 c1ac01c4 cec5a000 1001   872   873 0004102 [SLPQ wait =
0xc1ac01c4][SLP] su
  872 c17ef710 cec87000 1001   871   872 0004002 [SLPQ wait =
0xc17ef710][SLP] bash
  871 c1991e20 ced07000 1001   803   803 0000100 [SLPQ select =
0xc091b304][SLP] sshd
  854 c1ac3710 ced5f000    0     1   854 0004102 [SLPQ wait =
0xc1ac3710][SLP] login
  853 c1ac38d4 ced60000    0     1   853 0004002 [SLPQ ttyin =
0xc1529010][SLP] getty
  852 c1ac31c4 ced5c000    0     1   852 0004002 [SLPQ ttyin =
0xc1529210][SLP] getty
  851 c14ad54c ca43a000    0     1   851 0004002 [SLPQ ttyin =
0xc1529410][SLP] getty
  850 c1ac354c ced5e000    0     1   850 0004002 [SLPQ ttyin =
0xc1529610][SLP] getty
  849 c1ac054c ced00000    0     1   849 0004002 [SLPQ ttyin =
0xc1529810][SLP] getty
  848 c1ac3388 ced5d000    0     1   848 0004002 [SLPQ ttyin =
0xc1529a10][SLP] getty
  847 c17efc5c cec8a000    0     1   847 0004002 [SLPQ ttyin =
0xc1490c10][SLP] getty
  846 c1ac0388 cecff000    0     1   846 0004002 [SLPQ ttyin =
0xc1490410][SLP] getty
  828 c1756c5c cec3c000    0     1   828 0000000 [SLPQ select =
0xc091b304][SLP] inetd
  803 c1ac08d4 ced39000    0   571   803 0000100 [SLPQ sbwait =
0xc1bbae84][SLP] sshd
  753 c17ed54c cec7d000 1012     1   753 0000100 [SLPQ select =
0xc091b304][SLP] dhcpd
  728 c1752c5c cec33000    0     1   726 0004002 [SLPQ piperd =
0xc15dbd80][SLP] courierlogger
  726 c17ef1c4 cec84000    0     1   726 0000003 [SLPQ select =
0xc091b304][SLP] couriertcpd
  717 c17ef388 cec85000    0     1   713 0004002 [SLPQ piperd =
0xc182f300][SLP] courierlogger
  713 c17efa98 cec89000    0     1   713 0000003 [SLPQ select =
0xc091b304][SLP] couriertcpd
  711 c17efe20 cecc7000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  710 c1991000 cec51000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  709 c19911c4 cece5000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  708 c1991388 ced01000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  707 c199154c ced02000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  706 c1991710 ced03000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  705 c19918d4 ced04000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  704 c1991a98 ced05000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  703 c1991c5c ced06000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  701 c1756e20 cec3d000    0   698   697 0000002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  698 c1756a98 cec3b000    0   697   697 0004002 [SLPQ select =
0xc091b304][SLP] authdaemond.plain
  697 c17ed388 cec7c000    0     1   697 0000003 [SLPQ piperd =
0xc182f000][SLP] courierlogger
  687 c17ed8d4 cec7f000 1009     1   687 0008180 (threaded)  clamd
   thread 0xc183a000 ksegrp 0xc14acbd0 [SLPQ kserel 0xc14acc10][SLP]
   thread 0xc18374b0 ksegrp 0xc14acbd0 [SLPQ accept 0xc17fe03a][SLP]
   thread 0xc183a7d0 ksegrp 0xc18380e0 [SLPQ ksesigwait 0xc17ed9d4][SLP]
  685 c17ef000 cec83000   80   673   673 0000100 [SLPQ lockf =
0xc1723340][SLP] httpd
  684 c1752388 cebf2000   80   673   673 0000100 [SLPQ lockf =
0xc1723440][SLP] httpd
  683 c14adc5c ca47a000   80   673   673 0000100 [SLPQ lockf =
0xc17233c0][SLP] httpd
  682 c14ada98 ca479000   80   673   673 0000100 [SLPQ select =
0xc091b304][SLP] httpd
  681 c15a7c5c ce56f000   80   673   673 0000100 [SLPQ lockf =
0xc150b940][SLP] httpd
  677 c17ed710 cec7e000 1009   666   666 0000100 [SLPQ select =
0xc091b304][SLP] perl
  676 c17eda98 cec80000 1009   666   666 0000100 [SLPQ lockf =
0xc1977080][SLP] perl
  673 c17ede20 cec82000    0     1   673 0000001 [SLPQ select =
0xc091b304][SLP] httpd
  666 c17edc5c cec81000 1009     1   666 0000100 [SLPQ select =
0xc091b304][SLP] perl
  640 c17ed1c4 cec7b000   80     1   639 0004002 [SLPQ pause =
0xc17ed1fc][SLP] java
  617 c1756710 cec39000   70   616   612 0000000 [SLPQ select =
0xc091b304][SLP] postgres
  616 c17568d4 cec3a000   70   612   612 0000000 [SLPQ select =
0xc091b304][SLP] postgres
  612 c17ed000 cebf0000   70     1   612 0000000 [SLPQ select =
0xc091b304][SLP] postgres
  586 c1756388 cec37000    0     1   586 0000000 [SLPQ ufs =
0xc15bfd0c][SLP] cron
  571 c17561c4 cec36000    0     1   571 0000100 [SLPQ select =
0xc091b304][SLP] sshd
  548 c15a7a98 ce56e000 1004   541   527 0004102 [SLPQ sbwait =
0xc162f830][SLP] tinydns
  546 c15a7e20 ce570000 1006   540   527 0004002 [SLPQ piperd =
0xc15db000][SLP] multilog
  545 c1752000 cebde000 1006   542   527 0004002 [SLPQ piperd =
0xc15dac00][SLP] multilog
  544 c17521c4 cebe6000 1005   539   527 0004102 [SLPQ select =
0xc091b304][SLP] dnscache
  542 c175254c cec2f000    0   536   527 0004002 [SLPQ select =
0xc091b304][SLP] supervise
  541 c1752710 cec30000    0   536   527 0004002 [SLPQ select =
0xc091b304][SLP] supervise
  540 c17528d4 cec31000    0   536   527 0004002 [SLPQ select =
0xc091b304][SLP] supervise
  539 c1752a98 cec32000    0   536   527 0004002 [SLPQ select =
0xc091b304][SLP] supervise
  537 c1752e20 cec34000    0   527   527 0004002 [SLPQ piperd =
0xc15dad80][SLP] readproctitle
  536 c1756000 cec35000    0   527   527 0004002 [SLPQ ufs =
0xc15bfd0c][SLP] svscan
  527 c14ad8d4 ca43c000    0     1   527 0004002 [SLPQ wait =
0xc14ad8d4][SLP] sh
  444 c14ad388 ca439000    0     1   444 0000000 [SLPQ select =
0xc091b304][SLP] syslogd
  424 c14ade20 ca47b000    0     1   424 0000000 [SLPQ select =
0xc091b304][SLP] devd
  384 c14ad710 ca43b000    0     1   384 0000000 [SLPQ select =
0xc091b304][SLP] natd
  188 c14ad1c4 ca438000    0     1   188 0000000 [SLPQ pause =
0xc14ad1fc][SLP] adjkerntz
   51 c15a71c4 ce569000    0     0     0 0000204 [SLPQ - =
0xca45ad14][SLP] schedcpu
   50 c15a7388 ce56a000    0     0     0 0000204 [SLPQ - =
0xc092492c][SLP] nfsiod 3
   49 c15a754c ce56b000    0     0     0 0000204 [SLPQ - =
0xc0924928][SLP] nfsiod 2
   48 c15a7710 ce56c000    0     0     0 0000204 [SLPQ - =
0xc0924924][SLP] nfsiod 1
   47 c15a78d4 ce56d000    0     0     0 0000204 [SLPQ - =
0xc0924920][SLP] nfsiod 0
   46 c13f8a98 ca409000    0     0     0 0000204 [SLPQ vlruwt =
0xc13f8a98][SLP] vnlru
   45 c13f8c5c ca40a000    0     0     0 0000204 [SLPQ syncer =
0xc08f0e6c][SLP] syncer
   44 c13f8e20 ca40b000    0     0     0 0000204 [SLPQ psleep =
0xc091b8cc][SLP] bufdaemon
   43 c14aa000 ca410000    0     0     0 000020c [SLPQ pgzero =
0xc092b290][SLP] pagezero
   42 c14aa1c4 ca42f000    0     0     0 0000204 [SLPQ psleep =
0xc092b2e4][SLP] vmdaemon
   41 c14aa388 ca430000    0     0     0 0000204 [SLPQ psleep =
0xc092b2a0][SLP] pagedaemon
   40 c14aa54c ca431000    0     0     0 0000204 [IWAIT] swi0: sio
   39 c14aa710 ca432000    0     0     0 0000204 [SLPQ - =
0xc14a573c][SLP] fdc0
   38 c14aa8d4 ca433000    0     0     0 0000204 [SLPQ usbtsk =
0xc08e8ff8][SLP] usbtask
   37 c14aaa98 ca434000    0     0     0 0000204 [SLPQ usbevt =
0xc14c0210][SLP] usb0
    9 c14aac5c ca435000    0     0     0 0000204 [SLPQ actask =
0xc0a5ba2c][SLP] acpi_task2
    8 c14aae20 ca436000    0     0     0 0000204 [SLPQ actask =
0xc0a5ba2c][SLP] acpi_task1
    7 c14ad000 ca437000    0     0     0 0000204 [SLPQ actask =
0xc0a5ba2c][SLP] acpi_task0
   36 c13e854c ca3df000    0     0     0 0000204 [IWAIT] swi6:+
   35 c13e8710 ca3e0000    0     0     0 0000204 [IWAIT] swi6: task =
queue
   34 c13e88d4 ca3e1000    0     0     0 0000204 [IWAIT] swi6: acpitaskq
    6 c13e8a98 ca400000    0     0     0 0000204 [SLPQ - =
0xc1445d00][SLP] kqueue taskq
   33 c13e8c5c ca401000    0     0     0 0000204 [IWAIT] swi3: cambio
   32 c13e8e20 ca402000    0     0     0 0000204 [IWAIT] swi2: camnet
   31 c13f8000 ca403000    0     0     0 0000204 [IWAIT] swi6:+
    5 c13f81c4 ca404000    0     0     0 0000204 [SLPQ - =
0xc146e080][SLP] thread taskq
   30 c13f8388 ca405000    0     0     0 0000204 [SLPQ - =
0xc08e6c60][SLP] yarrow
    4 c13f854c ca406000    0     0     0 0000204 [SLPQ - =
0xc08eb688][SLP] g_down
    3 c13f8710 ca407000    0     0     0 0000204 [SLPQ - =
0xc08eb684][SLP] g_up
    2 c13f88d4 ca408000    0     0     0 0000204 [SLPQ - =
0xc08eb67c][SLP] g_event
   29 c13cc1c4 c9bec000    0     0     0 0000204 [IWAIT] swi4: vm
   28 c13cc388 c9bed000    0     0     0 000020c [IWAIT] swi5: clock sio
   27 c13cc54c c9c0c000    0     0     0 0000204 [IWAIT] swi1: net
   26 c13cc710 c9c0d000    0     0     0 0000204 [IWAIT] irq15: ata1
   25 c13cc8d4 c9c0e000    0     0     0 0000204 [IWAIT] irq14: ata0
   24 c13cca98 c9c0f000    0     0     0 0000204 [IWAIT] irq13:
   23 c13ccc5c c9c10000    0     0     0 0000204 [IWAIT] irq12:
   22 c13cce20 c9c11000    0     0     0 0000204 [IWAIT] irq11: xl0
   21 c13e8000 ca3dc000    0     0     0 0000204 [IWAIT] irq10: xl1
   20 c13e81c4 ca3dd000    0     0     0 0000204 [IWAIT] irq9: ath0 =
uhci0+
   19 c13e8388 ca3de000    0     0     0 0000204 [IWAIT] irq8: rtc
   18 c13c3000 c9ba6000    0     0     0 0000204 [IWAIT] irq7: ppc0
   17 c13c31c4 c9be3000    0     0     0 0000204 [IWAIT] irq6: fdc0
   16 c13c3388 c9be4000    0     0     0 0000204 [IWAIT] irq5:
   15 c13c354c c9be5000    0     0     0 0000204 [IWAIT] irq4: sio0
   14 c13c3710 c9be6000    0     0     0 0000204 [IWAIT] irq3:
   13 c13c38d4 c9be7000    0     0     0 0000204 [IWAIT] irq1: atkbd0
   12 c13c3a98 c9be8000    0     0     0 0000204 [IWAIT] irq0: clk
   11 c13c3c5c c9be9000    0     0     0 000020c [CPU 0] idle: cpu0
    1 c13c3e20 c9bea000    0     0     1 0004200 [SLPQ wait =
0xc13c3e20][SLP] init
   10 c13cc000 c9beb000    0     0     0 0000204 [SLPQ ktrace =
0xc08ef078][SLP] ktrace
    0 c08eb780 c0c1f000    0     0     0 0000200 [SLPQ sched =
0xc08eb780][SLP] swapper

db> trace
kdb_enter(c084774c) at kdb_enter+0x2b
siointr1(c1487800,c092d860,0,c0847510,6ad) at siointr1+0xce
siointr(c1487800) at siointr+0x21
intr_execute_handlers(c08cec60,c9bb2ca4,0,c14a5000,c14a5018) at =
intr_execute_handlers+0xa9
atpic_handle_intr(4) at atpic_handle_intr+0x92
Xatpic_intr4() at Xatpic_intr4+0x20
--- interrupt, eip =3D 0xc0a4b531, esp =3D 0xc9bb2ce8, ebp =3D =
0xc9bb2ce8 ---
acpi_cpu_c1(c08ef600,1,1,1,c06006ac) at acpi_cpu_c1+0x5
acpi_cpu_idle(c9bb2d1c,c0600709,c13c3c5c,c9bb2d34,c06004ec) at =
acpi_cpu_idle+0xd9
cpu_idle(c13c3c5c,c9bb2d34,c06004ec,0,c9bb2d48) at cpu_idle+0x28
idle_proc(0,c9bb2d48,0,c06006ac,0) at idle_proc+0x5d
fork_exit(c06006ac,0,c9bb2d48) at fork_exit+0xa4
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip =3D 0, esp =3D 0xc9bb2d7c, ebp =3D 0 ---

db> show locks

db> show pcpu=20
cpuid        =3D 0
curthread    =3D 0xc13c44b0: pid 11 "idle: cpu0"
curpcb       =3D 0xc9bb2da0
fpcurthread  =3D none
idlethread   =3D 0xc13c44b0: pid 11 "idle: cpu0"
APIC ID      =3D 0
currentldt   =3D 0x28
spin locks held:

db> trace 1137
sched_switch(c182bc80,0,1) at sched_switch+0x16f
mi_switch(1,0) at mi_switch+0x264
sleepq_switch(c1f33e14,cee1b7f0,c0618889,c1f33e14,0) at =
sleepq_switch+0xe0
sleepq_wait(c1f33e14,0,0,0,c1f33d68) at sleepq_wait+0x30
msleep(c1f33e14,c08ef740,50,c082edd2,0) at msleep+0x2f1
acquire(cee1b848,1000040,600,c182bc80,0) at acquire+0x9e
lockmgr(c1f33e14,1010002,c1f33d68,c182bc80,10002) at lockmgr+0x3a2
ufs_lock(cee1b874,cee1b890,c066c3d9,cee1b874,c08d1640) at ufs_lock+0x3c
ufs_vnoperate(cee1b874) at ufs_vnoperate+0x13
vn_lock(c1f33d68,10002,c182bc80,c15bfc60,c15bfc60) at vn_lock+0xc5
vget(c1f33d68,2,c182bc80,1085c,c182bc80) at vget+0xc9
vfs_cache_lookup(cee1b94c,cee1b968,c065c52b,cee1b94c,c182bc80) at =
vfs_cache_lookup+0x1c9
ufs_vnoperate(cee1b94c) at ufs_vnoperate+0x13
lookup(cee1bc18,c182bc80,c08fe260,0,0) at lookup+0x2cf
namei(cee1bc18,0,c182bc80,0,0) at namei+0x204
vn_open_cred(cee1bc18,cee1baf4,0,c1bbb980,ffffffff) at =
vn_open_cred+0x238
vn_open(cee1bc18,cee1baf4,0,ffffffff) at vn_open+0x1e
linker_hints_lookup(c0887360,c,c1508000,5,0) at =
linker_hints_lookup+0x109
linker_search_module(c1508000,5,0,400,0) at linker_search_module+0x43
linker_load_module(0,c1508000,0,0,cee1bcdc) at linker_load_module+0x80
kldload(c182bc80,cee1bd14,1,3,292) at kldload+0xcb
syscall(2f,2f,2f,bfbfed98,bfbfed7c) at syscall+0x213
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (304, FreeBSD ELF32, kldload), eip =3D 0x280cc257, esp =3D =
0xbfbfe28c, ebp =3D 0xbfbfed34 ---

db> watchdog
panic: blockable sleep lock (sleep mutex) eventhandler @ =
/usr/src/sys/kern/subr_eventhandler.c:213
cpuid =3D 0
Uptime: 22m50s
Dumping 192 MB
 16 32 48 64 80 96 112 128 144 160 176
Dump complete
Shutting down ACPI
Automatic reboot in 15 seconds - press a key on the console to abort
------=_NextPart_000_0025_01C4B7D0.9E37BCB0--



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