linux-kernel - Re: [PATCH] x86: Unify mmap

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Date:	Tue, 11 Dec 2007 13:05:45 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Ingo Molnar <mingo@...e.hu>
cc:	Harvey Harrison <harvey.harrison@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: Unify mmap_{32|64}.c

On Tue, 11 Dec 2007, Ingo Molnar wrote:

> > > mmap_is_ia32 always true for X86_32, or while emulating IA32 on X86_64
> > > Randomization not supported on X86_32 in legacy layout.  Both layouts 
> > > allow randomization on X86_64.
> > thanks for sorting this out - this looks really clean now. I've added 
> > your patch to x86.git.
> hm, it fails to boot on Fedora 8:
>  Freeing unused kernel memory: 296k freed
>  Write protecting the kernel read-only data: 1500k
>  mount[623]: segfault at 0000000b ip 4d681ab6 sp bf9a1b94 error 6
>  modprobe[625]: segfault at 0000000b ip 4d681ab6 sp bffd9994 error 6
>  consoletype[629]: segfault at 0000000b ip 4d681ab6 sp bfb6ad14 error 6
>  awk[632]: segfault at 0000000b ip 4d681ab6 sp bffe68c4 error 6
>  fstab-decode[633]: segfault at 0000000b ip 4d681ab6 sp bff1c8c4 error 6
>  setsysfont[634]: segfault at 0000000b ip 4d681ab6 sp bfdd0f74 error 6
>  hwclock[637]: segfault at 0000000b ip 4d681ab6 sp bf963304 error 6
>  touch[642]: segfault at 0000000b ip 4d681ab6 sp bf98cb34 error 6
>  modprobe[651]: segfault at 0000000b ip 4d681ab6 sp bfbc0564 error 6
>  rhgb-client[654]: segfault at 0000000b ip 4d681ab6 sp bfe9c024 error 6

Ingo,

just for clarification -- this happens with Harvery's merged code (haven't 
looked at it yet), but not with the original code, do I understand it 
correctly?

Thanks,

-- 
Jiri Kosina
SUSE Labs
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