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Message-Id: <20080201151243.M2879@visp.net.lb>
Date:	Fri, 1 Feb 2008 17:12:42 +0200
From:	"Denys Fedoryshchenko" <denys@...p.net.lb>
To:	linux-kernel@...r.kernel.org
Cc:	wim@...ana.be, lenb@...nel.org
Subject: kernel panic on 2.6.24/iTCO_wdt not rebooting machine

Hi

I sent already report to netdev, but most interesting question i have, that 
machine is not rebooted (it was set over sysctl value to kernel.panic)  and 
watchdog didnt reboot it too.

I set:

kernel.panic = 10
kernel.panic_on_oops = 10

watchdog iTCO_wdt + watchdog from busybox, and still machine didn't came back 
online from panic! But after pressing reset button by guy on location (it is 
very far in mountains, roads is blocked by snow now, there is no keyboard/
screen even to check what's happening).

After testing i notice that iTCO_wdt not working on this motherboard.

in dmesg
Feb  1 19:34:17 10.184.184.1 kernel: [   58.112496] iTCO_wdt: Intel TCO 
WatchDog Timer Driver v1.02 (26-Jul-2007)
Feb  1 19:34:17 10.184.184.1 kernel: [   58.113114] iTCO_wdt: Found a ICH9R 
TCO device (Version=2, TCOBASE=0x0460)
Feb  1 19:34:17 10.184.184.1 kernel: [   58.113654] iTCO_wdt: initialized. 
heartbeat=30 sec (nowayout=0)

1)i launch busybox watchdog:
watchdog -t 5 /dev/watchdog
i can see it in processes

2)then i do
killall -9 watchdog
i can see in dmesg
Feb  2 00:55:23 10.184.184.1 kernel: [ 6400.419418] iTCO_wdt: Unexpected 
close, not stopping watchdog!

Machine is not rebooting. It is not rebooting also on panic (over sysctl 
value). Motherboard: Intel DP35DP

Here is panic message, just for information.

Feb  1 09:08:50 SERVER [12380.067104] BUG: unable to handle kernel NULL 
pointer dereference
Feb  1 09:08:50 SERVER at virtual address 00000008
Feb  1 09:08:50 SERVER [12380.067140] printing eip: c01f10ed
Feb  1 09:08:50 SERVER *pde = 00000000
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067162] Oops: 0000 [#1]
Feb  1 09:08:50 SERVER SMP
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067181] Modules linked in:
Feb  1 09:08:50 SERVER netconsole
Feb  1 09:08:50 SERVER configfs
Feb  1 09:08:50 SERVER iTCO_wdt
Feb  1 09:08:50 SERVER nf_nat_pptp
Feb  1 09:08:50 SERVER nf_conntrack_pptp
Feb  1 09:08:50 SERVER nf_conntrack_proto_gre
Feb  1 09:08:50 SERVER nf_nat_proto_gre
Feb  1 09:08:50 SERVER sch_esfq
Feb  1 09:08:50 SERVER xt_tcpudp
Feb  1 09:08:50 SERVER ipt_TTL
Feb  1 09:08:50 SERVER ipt_ttl
Feb  1 09:08:50 SERVER xt_NOTRACK
Feb  1 09:08:50 SERVER iptable_raw
Feb  1 09:08:50 SERVER iptable_mangle
Feb  1 09:08:50 SERVER ifb
Feb  1 09:08:50 SERVER e1000e
Feb  1 09:08:50 SERVER em_nbyte
Feb  1 09:08:50 SERVER cls_tcindex
Feb  1 09:08:50 SERVER act_gact
Feb  1 09:08:50 SERVER cls_rsvp
Feb  1 09:08:50 SERVER sch_htb
Feb  1 09:08:50 SERVER cls_fw
Feb  1 09:08:50 SERVER act_mirred
Feb  1 09:08:50 SERVER em_u32
Feb  1 09:08:50 SERVER sch_red
Feb  1 09:08:50 SERVER sch_sfq
Feb  1 09:08:50 SERVER sch_tbf
Feb  1 09:08:50 SERVER sch_teql
Feb  1 09:08:50 SERVER cls_basic
Feb  1 09:08:50 SERVER act_police
Feb  1 09:08:50 SERVER sch_gred
Feb  1 09:08:50 SERVER act_pedit
Feb  1 09:08:50 SERVER sch_hfsc
Feb  1 09:08:50 SERVER cls_rsvp6
Feb  1 09:08:50 SERVER sch_ingress
Feb  1 09:08:50 SERVER em_meta
Feb  1 09:08:50 SERVER em_text
Feb  1 09:08:50 SERVER act_ipt
Feb  1 09:08:50 SERVER sch_dsmark
Feb  1 09:08:50 SERVER sch_prio
Feb  1 09:08:50 SERVER sch_netem
Feb  1 09:08:50 SERVER act_simple
Feb  1 09:08:50 SERVER cls_u32
Feb  1 09:08:50 SERVER em_cmp
Feb  1 09:08:50 SERVER sch_cbq
Feb  1 09:08:50 SERVER cls_route
Feb  1 09:08:50 SERVER xt_TCPMSS
Feb  1 09:08:50 SERVER iptable_nat
Feb  1 09:08:50 SERVER nf_conntrack_ipv4
Feb  1 09:08:50 SERVER ipt_LOG
Feb  1 09:08:50 SERVER ipt_MASQUERADE
Feb  1 09:08:50 SERVER ipt_REDIRECT
Feb  1 09:08:50 SERVER nf_nat
Feb  1 09:08:50 SERVER nf_conntrack
Feb  1 09:08:50 SERVER nfnetlink
Feb  1 09:08:50 SERVER iptable_filter
Feb  1 09:08:50 SERVER ip_tables
Feb  1 09:08:50 SERVER x_tables
Feb  1 09:08:50 SERVER 8021q
Feb  1 09:08:50 SERVER tun
Feb  1 09:08:50 SERVER tulip
Feb  1 09:08:50 SERVER r8169
Feb  1 09:08:50 SERVER sky2
Feb  1 09:08:50 SERVER via_velocity
Feb  1 09:08:50 SERVER via_rhine
Feb  1 09:08:50 SERVER sis900
Feb  1 09:08:50 SERVER ne2k_pci
Feb  1 09:08:50 SERVER 8390
Feb  1 09:08:50 SERVER skge
Feb  1 09:08:50 SERVER tg3
Feb  1 09:08:50 SERVER 8139too
Feb  1 09:08:50 SERVER e1000
Feb  1 09:08:50 SERVER e100
Feb  1 09:08:50 SERVER usb_storage
Feb  1 09:08:50 SERVER mtdblock
Feb  1 09:08:50 SERVER mtd_blkdevs
Feb  1 09:08:50 SERVER usbhid
Feb  1 09:08:50 SERVER uhci_hcd
Feb  1 09:08:50 SERVER ehci_hcd
Feb  1 09:08:50 SERVER ohci_hcd
Feb  1 09:08:50 SERVER usbcore
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067515]
Feb  1 09:08:50 SERVER [12380.067530] Pid: 0, comm: swapper Not tainted 
(2.6.24-build-0021 #26)
Feb  1 09:08:50 SERVER [12380.067550] EIP: 0060:[<c01f10ed>] EFLAGS: 00010086 
CPU: 0
Feb  1 09:08:50 SERVER [12380.067571] EIP is at rb_erase+0x110/0x22f
Feb  1 09:08:50 SERVER [12380.067589] EAX: f52bbea0 EBX: 00000000 ECX: 
00000000 EDX: f52bbea0
Feb  1 09:08:50 SERVER [12380.067608] ESI: f717df50 EDI: c1fed000 EBP: 
c1fecf80 ESP: c037fda8
Feb  1 09:08:50 SERVER [12380.067628]  DS: 007b ES: 007b FS: 00d8 GS: 0000 
SS: 0068
Feb  1 09:08:50 SERVER [12380.067647] Process swapper (pid: 0, ti=c037e000 
task=c03533a0 task.ti=c037e000)
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067668] Stack:
Feb  1 09:08:50 SERVER 00000001
Feb  1 09:08:50 SERVER c1fed000
Feb  1 09:08:50 SERVER c1fecf78
Feb  1 09:08:50 SERVER 00000002
Feb  1 09:08:50 SERVER 00000001
Feb  1 09:08:50 SERVER c0134663
Feb  1 09:08:50 SERVER c1fed000
Feb  1 09:08:50 SERVER c1fecf78
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067714]
Feb  1 09:08:50 SERVER c1fecf40
Feb  1 09:08:50 SERVER c013515b
Feb  1 09:08:50 SERVER 00000000
Feb  1 09:08:50 SERVER 4f3f473e
Feb  1 09:08:50 SERVER 000002d0
Feb  1 09:08:50 SERVER ffffffff
Feb  1 09:08:50 SERVER 7fffffff
Feb  1 09:08:50 SERVER 4f3f473e
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067760]
Feb  1 09:08:50 SERVER 000002d0
Feb  1 09:08:50 SERVER 00000000
Feb  1 09:08:50 SERVER c1fec120
Feb  1 09:08:50 SERVER c037ff84
Feb  1 09:08:50 SERVER c037fe70
Feb  1 09:08:50 SERVER f76ae880
Feb  1 09:08:50 SERVER c0113963
Feb  1 09:08:50 SERVER c1ff5f78
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.067806] Call Trace:
Feb  1 09:08:50 SERVER [12380.067839]  [<c0134663>]
Feb  1 09:08:50 SERVER __remove_hrtimer+0x5d/0x64
Feb  1 09:08:50 SERVER [12380.067861]  [<c013515b>]
Feb  1 09:08:50 SERVER hrtimer_interrupt+0x10c/0x19a
Feb  1 09:08:50 SERVER [12380.067883]  [<c0113963>]
Feb  1 09:08:50 SERVER smp_apic_timer_interrupt+0x6f/0x80
Feb  1 09:08:50 SERVER [12380.067905]  [<c0105838>]
Feb  1 09:08:50 SERVER apic_timer_interrupt+0x28/0x30
Feb  1 09:08:50 SERVER [12380.067928]  [<c02be6d7>]
Feb  1 09:08:50 SERVER _spin_lock_irqsave+0x13/0x27
Feb  1 09:08:50 SERVER [12380.067949]  [<c0134bc7>]
Feb  1 09:08:50 SERVER lock_hrtimer_base+0x15/0x2f
Feb  1 09:08:50 SERVER [12380.067970]  [<c0134ca0>]
Feb  1 09:08:50 SERVER hrtimer_start+0x16/0xf4
Feb  1 09:08:50 SERVER [12380.067991]  [<c027ec43>]
Feb  1 09:08:50 SERVER qdisc_watchdog_schedule+0x1e/0x21
Feb  1 09:08:50 SERVER [12380.068013]  [<f89f8fe6>]
Feb  1 09:08:50 SERVER htb_dequeue+0x6ef/0x6fb [sch_htb]
Feb  1 09:08:50 SERVER [12380.068036]  [<c028ac4d>]
Feb  1 09:08:50 SERVER ip_rcv+0x1fc/0x237
Feb  1 09:08:50 SERVER [12380.068057]  [<c0135297>]
Feb  1 09:08:50 SERVER hrtimer_get_next_event+0xae/0xbb
Feb  1 09:08:50 SERVER [12380.068078]  [<c0135297>]
Feb  1 09:08:50 SERVER hrtimer_get_next_event+0xae/0xbb
Feb  1 09:08:50 SERVER [12380.068099]  [<c0136e26>]
Feb  1 09:08:50 SERVER getnstimeofday+0x2b/0xb5
Feb  1 09:08:50 SERVER [12380.068118]  [<c0138d70>]
Feb  1 09:08:50 SERVER clockevents_program_event+0xe0/0xee
Feb  1 09:08:50 SERVER [12380.068140]  [<c027da0e>]
Feb  1 09:08:50 SERVER __qdisc_run+0x2a/0x163
Feb  1 09:08:50 SERVER [12380.068161]  [<c02722d8>]
Feb  1 09:08:50 SERVER net_tx_action+0xa8/0xcc
Feb  1 09:08:50 SERVER [12380.068180]  [<c027ec65>]
Feb  1 09:08:50 SERVER qdisc_watchdog+0x0/0x1b
Feb  1 09:08:50 SERVER [12380.068199]  [<c027ec7d>]
Feb  1 09:08:50 SERVER qdisc_watchdog+0x18/0x1b
Feb  1 09:08:50 SERVER [12380.068218]  [<c0135007>]
Feb  1 09:08:50 SERVER run_hrtimer_softirq+0x4e/0x96
Feb  1 09:08:50 SERVER [12380.068241]  [<c0126a82>]
Feb  1 09:08:50 SERVER __do_softirq+0x5d/0xc1
Feb  1 09:08:50 SERVER [12380.068260]  [<c0126b18>]
Feb  1 09:08:50 SERVER do_softirq+0x32/0x36
Feb  1 09:08:50 SERVER [12380.068279]  [<c0126d6a>]
Feb  1 09:08:50 SERVER irq_exit+0x38/0x6b
Feb  1 09:08:50 SERVER [12380.068298]  [<c0113968>]
Feb  1 09:08:50 SERVER smp_apic_timer_interrupt+0x74/0x80
Feb  1 09:08:50 SERVER [12380.068319]  [<c0105838>]
Feb  1 09:08:50 SERVER apic_timer_interrupt+0x28/0x30
Feb  1 09:08:50 SERVER [12380.068343]  [<c0103243>]
Feb  1 09:08:50 SERVER mwait_idle_with_hints+0x3c/0x40
Feb  1 09:08:50 SERVER [12380.068365]  [<c0103247>]
Feb  1 09:08:50 SERVER mwait_idle+0x0/0xa
Feb  1 09:08:50 SERVER [12380.068384]  [<c010357e>]
Feb  1 09:08:50 SERVER cpu_idle+0x98/0xb9
Feb  1 09:08:50 SERVER [12380.068403]  [<c03848c2>]
Feb  1 09:08:50 SERVER start_kernel+0x2d7/0x2df
Feb  1 09:08:50 SERVER [12380.068422]  [<c03840e0>]
Feb  1 09:08:50 SERVER unknown_bootoption+0x0/0x195
Feb  1 09:08:50 SERVER [12380.068444]  =======================
Feb  1 09:08:50 SERVER [12380.068460] Code:
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER 00
Feb  1 09:08:50 SERVER 00
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 4e
Feb  1 09:08:50 SERVER 08
Feb  1 09:08:50 SERVER 39
Feb  1 09:08:50 SERVER d9
Feb  1 09:08:50 SERVER 0f
Feb  1 09:08:50 SERVER 85
Feb  1 09:08:50 SERVER 85
Feb  1 09:08:50 SERVER 00
Feb  1 09:08:50 SERVER 00
Feb  1 09:08:50 SERVER 00
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 4e
Feb  1 09:08:50 SERVER 04
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER a8
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER 75
Feb  1 09:08:50 SERVER 14
Feb  1 09:08:50 SERVER 83
Feb  1 09:08:50 SERVER c8
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER 89
Feb  1 09:08:50 SERVER ea
Feb  1 09:08:50 SERVER 89
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER 89
Feb  1 09:08:50 SERVER f0
Feb  1 09:08:50 SERVER 83
Feb  1 09:08:50 SERVER 26
Feb  1 09:08:50 SERVER fe
Feb  1 09:08:50 SERVER e8
Feb  1 09:08:50 SERVER 1e
Feb  1 09:08:50 SERVER fd
Feb  1 09:08:50 SERVER ff
Feb  1 09:08:50 SERVER ff
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 4e
Feb  1 09:08:50 SERVER 04
Feb  1 07:08:49 SERVER unparseable log message: "<8b> "
Feb  1 09:08:50 SERVER 59
Feb  1 09:08:50 SERVER 08
Feb  1 09:08:50 SERVER 85
Feb  1 09:08:50 SERVER db
Feb  1 09:08:50 SERVER 74
Feb  1 09:08:50 SERVER 06
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 03
Feb  1 09:08:50 SERVER a8
Feb  1 09:08:50 SERVER 01
Feb  1 09:08:50 SERVER 74
Feb  1 09:08:50 SERVER 15
Feb  1 09:08:50 SERVER 8b
Feb  1 09:08:50 SERVER 41
Feb  1 09:08:50 SERVER 04
Feb  1 09:08:50 SERVER 85
Feb  1 09:08:50 SERVER c0
Feb  1 09:08:50 SERVER 0f
Feb  1 09:08:50 SERVER 84
Feb  1 09:08:50 SERVER c6
Feb  1 09:08:50 SERVER
Feb  1 09:08:50 SERVER [12380.068753] EIP: [<c01f10ed>]
Feb  1 09:08:50 SERVER rb_erase+0x110/0x22f
Feb  1 09:08:50 SERVER SS:ESP 0068:c037fda8
Feb  1 09:08:50 SERVER [12380.068978] Kernel panic - not syncing: Fatal 
exception in interrupt


--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.

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