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Date: Tue, 21 Jul 2009 02:42:33 +0200 From: Wolfgang Walter <wolfgang.walter@...m.de> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Kiko Piris <kernel@...ispons.net>, Damien Wyart <damien.wyart@...e.fr>, Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org Subject: Re: Linux 2.6.30.2: does not boot On Tuesday 21 July 2009, Linus Torvalds wrote: > > On Mon, 20 Jul 2009, Kiko Piris wrote: > > > Just to clarify: > > > > > > - you literally have a _working_ 2.6.30.1 that you compiled yourself a > > > few days ago. > > > > That’s correct. > > > > > - But when you try to compile that same kernel _now_, it fails with an > > > immediate reboot? And not just 2.6.30.2, but 2.6.30.1 does that too? > > > > Also correct. > > > > > That certainly implies something else than just the -fwrapv vs > > > -fno-strict-overflow thing. > > > > Yes, as Marcel Beister pointed, it resulted some binutils bug. > > Downgrading the package produced a perfectly bootable 2.6.30.2. > > Ok, so it's been narrowed down to binutils. Good. > > > > But we may be looking at two different issues, so maybe your "unable to > > > compile a working kernel" issue is different from the other reports. > > > > Totally unrelated to other reports, and not a kernel bug, in fact. > > Well, it's still not entirely clear that it's unrelated. > > It seems that all the people involved are running Debian/sid, and I don't > think we have any firm confirmation yet that it's the compiler flag for > anybody. It was certainly the primary suspect, but maybe that was always > just a red herring guess. > > Wolfgang hasn't actually tried to compile without the -fno-strict-overflow > flag yet, and maybe his hang is the same binutils bug. Yes, it is. I built with -fwrapv instead of -fno-strict-overflow and without either, both fail to boot. Downgrading binutils to those of debian/testing and the unmodified 2.6.30.2 works. So this seems to be indeed a problem with binutils in debian/sids. Regards, -- Wolfgang Walter Studentenwerk München Anstalt des öffentlichen Rechts Leiter EDV Leopoldstraße 15 80802 München Tel: +49 89 38196-276 Fax: +49 89 38196-144 wolfgang.walter@...m.de http://www.studentenwerk-muenchen.de/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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