linux-kernel - Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c

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Message-ID: <alpine.LFD.1.10.0808290909020.3300@nehalem.linux-foundation.org>
Date:	Fri, 29 Aug 2008 09:14:44 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jes Sorensen <jes@....com>
cc:	David Miller <davem@...emloft.net>, travis@....com, mingo@...e.hu,
	Alan.Brunelle@...com, tglx@...utronix.de, rjw@...k.pl,
	linux-kernel@...r.kernel.org, kernel-testers@...r.kernel.org,
	akpm@...ux-foundation.org, arjan@...ux.intel.com,
	rusty@...tcorp.com.au
Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c -
 bisected



On Fri, 29 Aug 2008, Jes Sorensen wrote:
> 
> I have only tested this on ia64, but it boots, so it's obviously
> perfect<tm> :-)

Well, it probably boots because it doesn't really seem to _change_ much of 
anything.

Things like this:

	-static inline void arch_send_call_function_ipi(cpumask_t mask)
	+static inline void arch_send_call_function_ipi(cpumask_t *mask)
	 {
	-       smp_ops.send_call_func_ipi(mask);
	+       smp_ops.send_call_func_ipi(*mask);
	 }

will still do that stack allocation at the time of the call. You'd have to 
pass the thing all the way down as a pointer..

			Linus


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