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    Subjectkernel panic on 2.6.24/iTCO_wdt not rebooting machine
    Date
    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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