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SubjectRe: 2.6.17-mm5
On Sun, 02 Jul 2006 11:03:16 +0100
Andy Whitcroft <apw@shadowen.org> wrote:

> Seems that we have some kind of schedular balance panic, I want to say
> back as this seems very familiar. Seems to be affecting the multi-node
> NUMA-Q systems here. The single node ones appear unaffected.
>
> Nothing jumps out of the patch list. Any suggestions as to what to rip
> out :)
>
> -apw
>
> divide error: 0000 [#1]
> 8K_STACKS SMP
> last sysfs file:
> Modules linked in:
> CPU: 3
> EIP: 0060:[<c0112b6e>] Not tainted VLI
> EFLAGS: 00010046 (2.6.17-mm5-autokern1 #1)
> EIP is at find_busiest_group+0x1a3/0x47c
> eax: 00000000 ebx: 00000007 ecx: 00000000 edx: 00000000
> esi: 00000000 edi: e7677264 ebp: e74a3ec8 esp: e74a3e58
> ds: 007b es: 007b ss: 0068
> Process swapper (pid: 0, ti=e74a2000 task=e7485030 task.ti=e74a2000)
> Stack: e7677264 00000010 c0119020 00000000 00000000 00000000 00000000
> 00000000
> ffffffff 00000000 00000000 00000001 00000001 00000001 00000080
> 00000000
> 00000000 00000200 00000020 00000080 00000000 00000000 e7677260
> c13dc960
> Call Trace:
> [<c0119020>] vprintk+0x5f/0x213
> [<c0112efb>] load_balance+0x54/0x1d6
> [<c011332d>] rebalance_tick+0xc5/0xe3
> [<c01137a3>] scheduler_tick+0x2cb/0x2d3
> [<c01215b4>] update_process_times+0x51/0x5d
> [<c010c224>] smp_apic_timer_interrupt+0x5a/0x61
> [<c0102d5b>] apic_timer_interrupt+0x1f/0x24
> [<c01006c0>] default_idle+0x0/0x59
> [<c01006f1>] default_idle+0x31/0x59
> [<c0100791>] cpu_idle+0x64/0x79
> Code: 00 5b 83 f8 1f 89 c6 5f 0f 8e 63 ff ff ff 8b 45 e0 8b 55 e8 01 45
> dc 8b 4a 08 89 c2 01 4d d4 c1 e2 07 89 d0 31 d2 89 ce c1 ee 07 <f7> f1
> 83 7d 9c 00 89 45 e0 74 17 89 45 d8 8b 55 e8 8b 4d a4 8b
> EIP: [<c0112b6e>] find_busiest_group+0x1a3/0x47c SS:ESP 0068:e74a3e58
> <0>Kernel panic - not syncing: Fatal exception in interrupt

Well there are only a handful of divides in find_busiest_group(). Wanna
have a poke around in gdb and work out which one you're hitting?
-
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