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Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten

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From: Evgeniy Polyakov
Subject: Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison overwritten
Date: Thursday, July 17, 2008 - 10:46 pm

Hi Ingo.

On Thu, Jul 17, 2008 at 11:42:22PM +0200, Ingo Molnar (mingo@elte.hu) wrote:

Out of curiosity, why does it scream at allocation time?
Does SLUB have a debug check at freeing time? If so, how does it work
and why didn't it caught use after free there?

-- 
	Evgeniy Polyakov
--
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Messages in current thread:
[bug, netconsole, SLUB] BUG skbuff_head_cache: Poison over ..., Ingo Molnar, (Thu Jul 17, 2:42 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Thu Jul 17, 2:45 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 3:06 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Thu Jul 17, 3:09 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 3:43 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Thu Jul 17, 4:15 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Thu Jul 17, 4:27 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Thu Jul 17, 4:35 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 4:52 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 4:56 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 5:01 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Thu Jul 17, 5:05 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Thu Jul 17, 5:16 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Thu Jul 17, 7:03 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Thu Jul 17, 7:13 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Thu Jul 17, 10:46 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Fri Jul 18, 12:03 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Fri Jul 18, 12:12 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka J Enberg, (Fri Jul 18, 2:00 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka Enberg, (Fri Jul 18, 2:02 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Fri Jul 18, 2:05 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Fri Jul 18, 2:09 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Fri Jul 18, 2:11 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka Enberg, (Fri Jul 18, 2:15 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka Enberg, (Fri Jul 18, 2:16 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Fri Jul 18, 3:16 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Christoph Lameter, (Fri Jul 18, 6:54 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Christoph Lameter, (Fri Jul 18, 6:55 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka Enberg, (Fri Jul 18, 7:44 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Christoph Lameter, (Fri Jul 18, 7:48 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Fri Jul 18, 9:07 am)
Re: [bug] Attempt to release alive inet socket f6fac040, Ingo Molnar, (Fri Jul 18, 12:10 pm)
Re: [bug] Attempt to release alive inet socket f6fac040, Ingo Molnar, (Fri Jul 18, 12:55 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 2:41 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Pekka Enberg, (Mon Jul 21, 2:52 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Mon Jul 21, 3:06 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 3:50 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Mon Jul 21, 4:03 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 4:13 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Mon Jul 21, 4:25 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Mon Jul 21, 4:41 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 4:55 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Mon Jul 21, 5:57 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 7:01 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Christoph Lameter, (Mon Jul 21, 9:19 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Christoph Lameter, (Mon Jul 21, 9:22 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 12:21 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Mon Jul 21, 12:57 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Mon Jul 21, 1:05 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Mon Jul 21, 1:22 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Vegard Nossum, (Mon Jul 21, 1:23 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Evgeniy Polyakov, (Mon Jul 21, 2:24 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Mon Jul 21, 4:33 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Tue Jul 22, 12:50 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Ingo Molnar, (Tue Jul 22, 6:34 am)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., David Miller, (Wed Jul 23, 3:31 pm)
Re: [bug, netconsole, SLUB] BUG skbuff_head_cache: Poison ..., Jeff Kirsher, (Wed Jul 23, 3:40 pm)