Hello All. Please help cassify bug to report to bugzilla it!

Look to my sysctl:

# sysctl -a | grep panic
kernel.panic = 3
kernel.panic_on_oops = 1
kernel.unknown_nmi_panic = 1
kernel.panic_on_unrecovered_nmi = 1
vm.panic_on_oom = 0
# sysctl -a | grep nmi
kernel.unknown_nmi_panic = 1
kernel.nmi_watchdog = 1
kernel.panic_on_unrecovered_nmi = 1

# sysctl -a | grep rq
kernel.sysrq = 1

But computer do not reboot and ALT+SysRQ+B don't work...

This i get by netconsole and on the screen:


[ 2251.728719] BUG: NMI Watchdog detected LOCKUP on CPU3, ip c01fafd4,
registers:
[ 2251.728719] Modules linked in: netconsole i2c_i801 i2c_core e1000e e1000
[ 2251.728719]
[ 2251.728719] Pid: 0, comm: swapper Not tainted (2.6.26.5-fw #1)
[ 2251.728719] EIP: 0060:[<c01fafd4>] EFLAGS: 00000082 CPU: 3
[ 2251.728719] EIP is at rb_insert_color+0x24/0xc0
[ 2251.728719] EAX: f6c134a4 EBX: f6c134a4 ECX: f6c134a4 EDX: f6c134a4
[ 2251.728719] ESI: f6c134a4 EDI: f6c134a4 EBP: c202d0d4 ESP: f7c5fcac
[ 2251.728719]  DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 2251.728719] Process swapper (pid: 0, ti=f7c5e000 task=f7c32940
task.ti=f7c5e000)
[ 2251.728719] Stack: f6c134a4 00000000 c202d0cc c202d0d4 c013a8ff
f6c134a4 c202d0cc c20230cc
[ 2251.728719]        c04450a0 c013adea 00000000 f7c5fcfc 392e7c00
0000020c 00000001 00000286
[ 2251.728719]        f6c13000 ffffffff 00000000 00000000 c02d15fe
00000000 f6c13000 c02d6da6
[ 2251.728719] Call Trace:
[ 2251.728719]  [<c013a8ff>] enqueue_hrtimer+0x5f/0x80
[ 2251.728719]  [<c013adea>] hrtimer_start+0xaa/0x130
[ 2251.728719]  [<c02d15fe>] qdisc_watchdog_schedule+0x1e/0x30
[ 2251.728719]  [<c02d6da6>] htb_dequeue+0x6a6/0x810
[ 2251.728719]  [<c02d047c>] __qdisc_run+0x19c/0x1d0
[ 2251.728719]  [<c02d71c0>] htb_enqueue+0x0/0x1e0
[ 2251.728719]  [<c02c4cb7>] dev_queue_xmit+0x267/0x380
[ 2251.728719]  [<c02e6040>] ip_forward_finish+0x0/0x40
[ 2251.728719]  [<c02e8bef>] ip_finish_output+0x11f/0x280
[ 2251.728719]  [<c02e630f>] ip_forward+0x28f/0x2d0
[ ...
[ message continues ]

At a guess I'd say that the hrtimer data structures got wrecked.

If possible, please see if we fixed it in 2.6.27-rc8.  If so, there
might be a patch we need to backport (although is might have been
backported into later 2.6.25.x's as well).

--

[ message continues ]

We have 10 equal server what do Trafiic Shape (tc (htb, u32, sfq) and
iptables) only. Few of them halt one times in week.
Timer settings in config:
HZ=300
NO_HZ=n
Ok. I will try. Only one question - iTCO watchdog don't work on this
platform (but chip have it... ICH9R). How i can reboot server remotely
if it halt?

Thanks!
--

[ message continues ]