linux-kernel - Re: [PATCH -next-20080709] fixup stop

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Message-ID: <20080711074602.GB27849@elte.hu>
Date:	Fri, 11 Jul 2008 09:46:03 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Milton Miller <miltonm@....com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	Rusty Russell <rusty@...tcorp.com.au>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH -next-20080709] fixup stop_machine use cpu mask vs
	ftrace


* Milton Miller <miltonm@....com> wrote:

> Hi Rusty, Ingo.
> 
> Rusty's patch [PATCH 3/3] stop_machine: use cpu mask rather than magic 
> numbers didn't find kernel/trace/ftrace.c in -next, causing an 
> immediate almost NULL pointer dereference in ftrace_dynamic_init.

Rusty - what's going on here? Please do not change APIs like that, which 
cause code to crash. Either do a compatible API change, or change it 
over in a way that causes clear build failures, not crashes.

	Ingo
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