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From: NeilBrown <neilb@suse.de>
To: Manish Katiyar <mkatiyar@gmail.com>
Cc: linux-raid@vger.kernel.org, Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PANIC] : kernel BUG at drivers/md/raid5.c:2756!
Date: Tue, 1 Nov 2011 17:29:46 +1100	[thread overview]
Message-ID: <20111101172946.1bf765f4@notabene.brown> (raw)
In-Reply-To: <CAE0An6em5crdkSJOLHSB85fQ95Br5HRmu3pa-E4O10X5y7vr9g@mail.gmail.com>

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On Mon, 31 Oct 2011 23:09:04 -0700 Manish Katiyar <mkatiyar@gmail.com> wrote:

> > I think you were quite unlucky to hit this and that you will find it hard to
> > reproduce. :-(
> 
> Well, its always reproducible on my ubuntu when I run that script.
> 

Excellent!!   That means you can reliably see if the patch fixes it. :-)

I guess I was thinking of 'real' devices which are slower than XOR.  You were
using loop back device on files in /tmp which are presumably always in memory.
I guess it would be a lot easier to hit in that case.

Thanks,
NeilBrown

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  reply	other threads:[~2011-11-01  6:29 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-31 21:29 [PANIC] : kernel BUG at drivers/md/raid5.c:2756! Manish Katiyar
2011-11-01  5:39 ` NeilBrown
2011-11-01  6:09   ` Manish Katiyar
2011-11-01  6:29     ` NeilBrown [this message]
2011-11-04 18:25       ` Manish Katiyar
2011-11-06 22:00         ` NeilBrown
2011-11-04 19:03   ` Williams, Dan J
2011-11-06 22:12     ` NeilBrown

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