linux-kernel - Re: Linux 2.6.30.2: does not boot

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Date:	Mon, 20 Jul 2009 22:31:03 +0200
From:	Damien Wyart <damien.wyart@...e.fr>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Greg KH <gregkh@...e.de>,
	Wolfgang Walter <wolfgang.walter@...m.de>,
	linux-kernel@...r.kernel.org
Subject: Re: Linux 2.6.30.2: does not boot

> > I am seeing a similar problem (no hang but an immediate reboot) on the
> > same distro. I tried to bisect but got no good kernel in the end.

> > To clarify things I recompiled again 2.6.30.1 with the orginial .config
> > and it also failed to boot (I was happy to have renamed it so the
> > working kernel was still available). I suspected a recent gcc 4.3
> > upgrade so downgraded gcc, but no luck, still getting the same problem.
> > So for now I am quite stuck, but there is clearly a bad problem
> > somewhere...

* Linus Torvalds <torvalds@...ux-foundation.org> [2009-07-20 11:16]:
> Hmm. So you _had_ a working self-compiled 2.6.30 kernel at some point?

Yes, my case is very similar to the one described by Kiko Piris, and
I also think this is getting off topic.

> One thing to look out for is that a compiler upgrade/downgrade will be
> invisible to the kernel build system, so if you downgrade the compiler
> and recompile, you may not actually recompile things at all.

I tried the bisect with the same compiler and then for other tests
I recompiled from scratch each time on a tmpfs to make sure I was not
messing things up. On this machine, ccache is not used.

So I am suspecting a recent glibc or binutils upgrade (gcc downgrade did
not solve the problem) and even if some people noticed problems with
2.6.30.2, my issue seems different and only distro-related.

-- 
Damien Wyart
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