linux-kernel - Re: kernel BUG at mm/slab.c:601

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Message-ID: <19f34abd0811211725s169dc42ao195c61b6dac3e975@mail.gmail.com>
Date:	Sat, 22 Nov 2008 02:25:33 +0100
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Brian Phelps" <lm317t@...il.com>,
	"Mauro Carvalho Chehab" <mchehab@...urbo.com.br>
Cc:	linux-kernel@...r.kernel.org, "Al Viro" <viro@...iv.linux.org.uk>,
	"Mikael Pettersson" <mikpe@...uu.se>,
	"Alexander Shaduri" <ashaduri@...il.com>,
	"Alexey Dobriyan" <adobriyan@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: kernel BUG at mm/slab.c:601

On Sat, Nov 22, 2008 at 2:10 AM, Vegard Nossum <vegard.nossum@...il.com> wrote:
>> [  527.562373]  ffffffff8043b157 0000000000200200 ffffffffa02810d4
>> ffff88001e13c600
>
> LIST_POISON2 on the stack:
>
> include/linux/poison.h:#define LIST_POISON2  ((void *) 0x00200200)

So looking at bttv source code, I wonder what the codes like these are
trying to do:

                        if (set->top->vb.queue.next)
                                list_del(&set->top->vb.queue);

Code is ancient, I'll ask Mauro.


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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