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Date: Tue, 04 Feb 2003 01:07:58 -0800
From: Dave Hansen <haveblue@us.ibm.com>
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To: "Martin J. Bligh" <mbligh@aracnet.com>
CC: Andrew Morton <akpm@digeo.com>, linux-kernel@vger.kernel.org,
       linux-mm@kvack.org
Subject: Re: 2.5.59-mm8
References: <20030203233156.39be7770.akpm@digeo.com> <167540000.1044346173@[10.10.2.4]>
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Martin J. Bligh wrote:
>>http://www.zip.com.au/~akpm/linux/patches/2.5/2.5.59/2.5.59-mm8/
> 

> Booted to login prompt, then immediately oopsed 
> (16-way NUMA-Q, mm6 worked fine). At a wild guess, I'd suspect 
> irq_balance stuff.
> 
> Unable to handle kernel NULL pointer dereference at virtual address 0000013c
>  printing eip:
> c01ed768
> *pde = 2ecb7001
> *pte = 00000000
> Oops: 0002
> CPU:    2
> EIP:    0060:[<c01ed768>]    Not tainted
> EFLAGS: 00010046
> EIP is at isp1020_intr_handler+0x1f8/0x330
> eax: 00000000   ebx: ef67f080   ecx: 00000000   edx: 00000000
> esi: 00000000   edi: 00000003   ebp: ef6c589c   esp: f0199efc
> ds: 007b   es: 007b   ss: 0068
> Process swapper (pid: 0, threadinfo=f0198000 task=f019cc40)
> Stack: ef67f080 c02c7fe0 0360db40 f0199f40 00000003 ef6c5800 00000086
> f0199f7c 
>        00000013 c01ed556 00000013 ef6c5800 f0199f7c f01ef7e0 24000001
> c010b7c5 
>        00000013 ef6c5800 f0199f7c c02c3a60 00000260 00000013 f01ef7e0
> c010b9bd 
> Call Trace:
>  [<c01ed556>] do_isp1020_intr_handler+0x36/0x50
>  [<c010b7c5>] handle_IRQ_event+0x45/0x70
>  [<c010b9bd>] do_IRQ+0x8d/0x100
>  [<c0107080>] default_idle+0x0/0x50
>  [<c0107080>] default_idle+0x0/0x50
>  [<c010a070>] common_interrupt+0x18/0x20
>  [<c0107080>] default_idle+0x0/0x50
>  [<c0107080>] default_idle+0x0/0x50
>  [<c01070aa>] default_idle+0x2a/0x50
>  [<c010714a>] cpu_idle+0x3a/0x50
>  [<c0120294>] printk+0x164/0x1a0

This didn't include 4k/irqstack stuff did it?  That is in the path that
those patches touch.

-- 
Dave Hansen
haveblue@us.ibm.com

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