linux-kernel - Re: [BUG 2.6.36-rc6] list corruption in module_bug

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Message-ID: <AANLkTinCgGDxhuUf1a+gO-xdVi9bU0Shmo-KejC+eU4o@mail.gmail.com>
Date:	Tue, 5 Oct 2010 10:17:48 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Arnd Bergmann <arnd@...db.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Kay Sievers <kay.sievers@...y.org>,
	Brandon Philips <brandon@...p.org>
Subject: Re: [BUG 2.6.36-rc6] list corruption in module_bug_finalize

On Tue, Oct 5, 2010 at 9:40 AM, Thomas Gleixner <tglx@...utronix.de> wrote:
>
> Hmm, with this patch the corruption triggers at every boot (5 of
> 5). Without it it's just happening randomly (1 of 10)
>
> Digging further. Dammit, I fear my evil plan fires back now due to
> some even more lazy person who doesn't use modules. :)

Sre you sure you used the second version? The first version missed the
cleanup at module unload time, and would have caused the symptoms you
see.

I just tried my own machine with modules (and list debugging), and it
seemed fine. And it show now all happen under the module mutex, so I
don't see how it would be timing-sensitive.

But hey, maybe I'm missing something really silly.

                           Linus
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