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Re: Regression? 2.6.27-rc3 segfault on cold boot; not on warm boot.

To: "Rafael J. Wysocki" <rjw@xxxxxxx>
Subject: Re: Regression? 2.6.27-rc3 segfault on cold boot; not on warm boot.
From: David Greaves <david@xxxxxxxxxxxx>
Date: Fri, 22 Aug 2008 13:38:31 +0100
Cc: "'linux-kernel@xxxxxxxxxxxxxxx'" <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Dave Chinner <david@xxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
In-reply-to: <200808212026.17590.rjw@xxxxxxx>
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Rafael J. Wysocki wrote:
> [Adding CCs]
> [The issue is probably present in 2.6.26 too]
> On Thursday, 21 of August 2008, David Greaves wrote:
>> I have a desktop system that has started having problems booting up in the 
>> morning.
>> It appears to just happen on more recent kernels.
>> I was having unrelated CDROM problems with a driver in an old kernel and 
>> decided
>> to test 2.6.27-rcX
>> The CDROM problem is fine now.
>> However I started having problems on -rc1. I found that the machine was 
>> hanging
>> soon after booting and needed a reboot. After a reboot it would work fine for
>> the rest of the day.
>> When -rc3 came out I tried that and the problem still appears to be there.
>> The normal process is now to boot to single-user, ctrl-alt-sysreq-SUB and 
>> then
>> reboot to multi-user. This isn't ideal.
>> If I cold boot the problem doesn't occur.
>> I will try different versions over the next few days.

As promised, I tried this morning and didn't have the problem. I will
try again a few times to confirm.
Nb Although the log had an XFS failure, I think the real issue is the segfaults;
I think XFS is a casuality, not a cause. Th problem almost always results in an
XFS crash at some point - but usually preceded by many segfaults in random 


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