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From: Linus Torvalds <torvalds@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
	Jiri Slaby <jirislaby@gmail.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: GIT head no longer boots on x86-64
Date: Wed, 15 Oct 2008 08:06:13 -0700 (PDT)	[thread overview]
Message-ID: <alpine.LFD.2.00.0810150758310.3288@nehalem.linux-foundation.org> (raw)
In-Reply-To: <20081015115153.GA16413@elte.hu>


On Wed, 15 Oct 2008, Ingo Molnar wrote:
> 
> Queued the fix below up in tip/x86/urgent for a merge to Linus later 
> today. Thanks!

Please don't send this crap to me.

Guys, _look_ at the patch for one second. And then tell me it isn't crap. 

The question is: "Is this a vmalloc'ed area?". That's the name of the 
function. AND YOU JUST BROKE IT!

Fix the damn caller instead. Don't make x86-64-specific changes to a 
generic function that breaks the whole meaning of the function. I don't 
understand what the hell is wrong with you people - we don't fix bugs by 
introducing idiocies, we fix them by fixing the code.

EVEN YOUR COMMIT MESSAGE should have made this obvious.

The code in question already does

	VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) &&
                       !is_module_address(addr));

and look at that thing and ask yourself: where was the bug again.

And dammit, if you say it was in "is_vmalloc_addr()", I can only shake my 
head.

Please guys. Use some taste. 

		Linus

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  parent reply	other threads:[~2008-10-15 15:06 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <alpine.LFD.2.00.0810130752020.3288@nehalem.linux-foundation.org>
2008-10-13 15:11 ` Jiri Slaby
2008-10-13 15:47   ` Alan Cox
2008-10-15 11:51     ` Ingo Molnar
2008-10-15 13:19       ` Jiri Slaby
2008-10-15 15:06       ` Linus Torvalds [this message]
2008-10-15 15:33         ` Jiri Slaby
2008-10-15 16:01           ` Linus Torvalds
2008-10-15 20:31           ` Arjan van de Ven
2008-10-15 15:35         ` Linus Torvalds
2008-10-16 10:31           ` H. Peter Anvin

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