linux-kernel - Re: [regression?] 2.6.26 floppy boot failure with kernel packed using 'upx'

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Message-Id: <200807101125.34275.elendil@planet.nl>
Date:	Thu, 10 Jul 2008 11:25:32 +0200
From:	Frans Pop <elendil@...net.nl>
To:	Ian Campbell <ijc@...lion.org.uk>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [regression?] 2.6.26 floppy boot failure with kernel packed using 'upx'

On Thursday 10 July 2008, Ian Campbell wrote:
> On Thu, 2008-07-10 at 06:54 +0200, Frans Pop wrote:
> > The issue can also be reproduced using qemu without booting the
> > floppy itself. For the "bad" image:
> > # Boots correctly (but fails when mounting root fs):
> > $ qemu -kernel vmlinuz -hda /dev/zero
> > # Fails:
> > $ qemu -kernel vmlinuz.upx -hda /dev/zero
>
> I can repro this.
>
> All in all I'd say it should be treated as a new subtype/variant which
> UPX should support. I'd say adding support for bzImage v2.08 to UPX
> would be pretty easy for someone who knows the code base (I couldn't
> even find the decompressor code, but then it's pre-coffee time here..).

Thanks for the quick and complete reply Ian. I already expected this but 
thought it would at least be useful to inform people here of the issue 
(and get it indexed for search engines).

I have no problems with it not being treated as a bug/regression.

I've now filed a bug report against upx:
http://sourceforge.net/tracker/?func=detail&aid=2014835&group_id=2331&atid=102331

Cheers,
FJP
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