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Message-ID: <alpine.LFD.1.10.0804250759260.2779@woody.linux-foundation.org>
Date: Fri, 25 Apr 2008 08:03:27 -0700 (PDT)
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Jiri Slaby <jirislaby@...il.com>
cc: David Miller <davem@...emloft.net>, zdenek.kabelac@...il.com,
rjw@...k.pl, paulmck@...ux.vnet.ibm.com, akpm@...ux-foundation.org,
linux-ext4@...r.kernel.org, herbert@...dor.apana.org.au,
penberg@...helsinki.fi, clameter@....com,
linux-kernel@...r.kernel.org,
Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
Andi Kleen <andi@...stfloor.org>, pageexec@...email.hu,
"H. Peter Anvin" <hpa@...or.com>,
Jeremy Fitzhardinge <jeremy@...p.org>,
Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 1/1] x86: fix text_poke
On Mon, 28 Apr 2008, Jiri Slaby wrote:
>
> Thanks. Bisected mm down to git-x86.patch, bisected git-x86-latest down to
> x86: enhance DEBUG_RODATA support - alternatives
> The patch below fixes the problem for me. Comments welcome.
You're a hero, Jiri.
And that also explains why I didn't see it - I don't do modules.
Thanks a heap.
> The 0xf0 pattern comes from alternatives_smp_lock:
> text_poke(*ptr, ((unsigned char []){0xf0}), 1);
And we should really add a lot more sanity checking there.
Linus
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