linux-kernel - Re: Boot failure with ext2 and initrds

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Message-ID: <Pine.LNX.4.64.0611141858210.11956@blonde.wat.veritas.com>
Date:	Tue, 14 Nov 2006 19:11:22 +0000 (GMT)
From:	Hugh Dickins <hugh@...itas.com>
To:	Mel Gorman <mel@...net.ie>
cc:	Andrew Morton <akpm@...l.org>,
	"Martin J. Bligh" <mbligh@...igh.org>, linux-kernel@...r.kernel.org
Subject: Re: Boot failure with ext2 and initrds

On Tue, 14 Nov 2006, Mel Gorman wrote:
> 2.6.19-rc5-mm2
> 
> Am seeing errors with systems using ext2. First machine is a plan old x86
> using initramfs. Console output looks like;
> ...
> Configuring network interfaces...BUG: soft lockup detected on CPU#3!
> ...
>  [<c01b3b80>] ext2_try_to_allocate+0xdb/0x152
>  [<c01b3e72>] ext2_try_to_allocate_with_rsv+0x4b/0x1b2
> 
> I've not investigated yet what patches might be at fault.

I expect you'll find it's
ext2-reservations-bring-ext2-reservations-code-in-line-with-latest-ext3.patch
which gets stuck in a loop there for me too: back it out and all seems fine.

It's not obvious which part of the patch is to blame: mostly it's
cleanup, but a few variables do change size: I'm currently narrowing
down to where a fix is needed.

Hugh
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