linux-kernel - Re: [PATCH] x86, hweight: Fix UML boot crash

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Message-Id: <201006141544.59500.toralf.foerster@gmx.de>
Date:	Mon, 14 Jun 2010 15:44:58 +0200
From:	Toralf Förster <toralf.foerster@....de>
To:	Borislav Petkov <bp@...64.org>
Cc:	Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	"user-mode-linux-devel@...ts.sourceforge.net" 
	<user-mode-linux-devel@...ts.sourceforge.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86, hweight: Fix UML boot crash


Borislav Petkov wrote at 15:00:39

> Linus' tree doesn't contain the fix yet - rather it is in -tip:
> http://git.kernel.org/tip/055c47272b8f5679d08ccc57efea3cb4aaeb5fc6
> 
> You can easily cherry-pick it from there and retest.
Issue solved works with that patch.

FWIW : This command sequence produced a linux executable which crashed too:

$> ~/devel/linux-2.6 $ patch -p1 < ../linux-2.6-
tip.git-055c47272b8f5679d08ccc57efea3cb4aaeb5fc6.patch patching file 
arch/um/include/asm/arch_hweight.h

$> ~/devel/linux-2.6 $ make ARCH=um CC="ccache gcc"
make[1]: `arch/um/sys-i386/user-offsets.s' is up to date.
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  LINK linux
$> start_uml.sh
...

But after I compiled it w/o ccache

$> ~/devel/linux-2.6 $ make ARCH=um

linux executable works (!?!)

Anyway thx for the fix
:-)

-- 
MfG/Kind regards
Toralf Förster

pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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