linux-kernel - Re: Crash during vmcore

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Date:	Wed, 16 Nov 2011 10:20:47 -0800
From:	Tim Hartrick <tim@...ecast.com>
To:	Dave Young <dyoung@...hat.com>
Cc:	tj@...nel.org, WANG Cong <xiyou.wangcong@...il.com>,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: Crash during vmcore_init


Dave,

On Wed, 2011-11-16 at 10:22 +0800, Dave Young wrote:
> On 11/16/2011 06:32 AM, Tim Hartrick wrote:
> 
> > 
> > Dave,
> > 
> > I tested with
> > 
> > linux-image-3.1.1-030101-generic_3.1.1-030101.201111111651_amd64.deb
> > 
> > which, as far as I know, is the Ubuntu build of the latest stable.
> > Below are the results.
> > 
> > [    1.427457] ioremap: invalid physical address 5800000000000
> 
> 
> Hi, thanks for the testing
> 
> Can you applied the debug patch to see if it's per cpu problem?
> 
> Don't need test kdump, just
> cd /sys/devices/system/cpu
> cat cpu[x]/crash_notes
> 
> probably cat crash notes of cpu number other than 0 will get the invalid
> address
> 

Using 3.1.1 stable with your patch.  See below.


tim

# for i in /sys/devices/system/cpu/cpu[0-9]*/crash_notes; do cat $i; done
5800000000000
5800000000000
5800000000000
5800000000000
5800000000000
5800000000000
5800000000000
5800000000000

dmesg:

[  277.276349] per cpu addr ffff880c7fc19ad0
[  277.276352] addr is not in vmalloc area
[  277.277545] per cpu addr ffff880667c19ad0
[  277.277548] addr is not in vmalloc area
[  277.278832] per cpu addr ffff880c7fc39ad0
[  277.278835] addr is not in vmalloc area
[  277.280175] per cpu addr ffff880667c39ad0
[  277.280178] addr is not in vmalloc area
[  277.281406] per cpu addr ffff880c7fc59ad0
[  277.281409] addr is not in vmalloc area
[  277.282592] per cpu addr ffff880667c59ad0
[  277.282594] addr is not in vmalloc area
[  277.284019] per cpu addr ffff880c7fc79ad0
[  277.284022] addr is not in vmalloc area
[  277.285251] per cpu addr ffff880667c79ad0
[  277.285254] addr is not in vmalloc area








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