linux-kernel - Re: linux-next: slab shrinkers: BUG at mm/list

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Message-ID: <20130619140234.GB4031@localhost.localdomain>
Date:	Wed, 19 Jun 2013 18:02:34 +0400
From:	Glauber Costa <glommer@...il.com>
To:	Michal Hocko <mhocko@...e.cz>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Dave Chinner <david@...morbit.com>, linux-mm@...ck.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: slab shrinkers: BUG at mm/list_lru.c:92

On Wed, Jun 19, 2013 at 03:57:16PM +0200, Michal Hocko wrote:
> On Wed 19-06-13 11:35:27, Glauber Costa wrote:
> [...]
> > Sorry if you said that before Michal.
> > 
> > But given the backtrace, are you sure this is LRU-related?
> 
> No idea. I just know that my mm tree behaves correctly after the whole
> series has been reverted (58f6e0c8fb37e8e37d5ac17a61a53ac236c15047) and
> before the latest version of the patchset has been applied.
> 
> > You mentioned you bisected it but found nothing conclusive.
> 
> Yes, but I was interested in crashes and not hangs so I will try it
> again.
> 
> I really hope this is not just some stupidness in my tree.
> 
Okay. Just looking at the stack trace you provided me it would be hard
to implicate us. But it is not totally unreasonable either since we touch
things around this. I would right now assign more probability to a tricky
bug than to some misconfiguration on your side.
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