linux-kernel - Re: BUG: Bad rss-counter state

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Message-ID: <20120621095024.GA10745@tiehlicka.suse.cz>
Date:	Thu, 21 Jun 2012 11:50:24 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Nick Bowler <nbowler@...iptictech.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: BUG: Bad rss-counter state

On Wed 20-06-12 15:49:08, Nick Bowler wrote:
> Hi folks,
> 
> I just noticed the following couple lines in my kernel log for Linux
> 3.4.2:
> 
>   Jun 20 14:57:54 emergent kernel: BUG: Bad rss-counter state mm:ffff88000ff1f400 idx:1 val:-2
>   Jun 20 14:57:54 emergent kernel: BUG: Bad rss-counter state mm:ffff88000ff1f400 idx:2 val:2
> 
> I have no idea what these messages mean, nor what I was doing exactly
> at 14:57:54 today, nor whether they've been fixed in newer kernels.
> Regardless, they appear to be telling me that there's a kernel problem
> since they contain the word "BUG", so I figured I had better report them
> nonetheless.  Other than the fact that these messages were printed, the
> system is operating normally.

The issue is known and the fix can be found at
https://lkml.org/lkml/2012/6/9/47
 
> This happened about a week after bootup, so it's probably not easy to
> reproduce.
> 
> Let me know if you need any more info,
> -- 
> Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)
> 
> --
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-- 
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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