linux-kernel - Re: Kernel bug with MPX?

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Date:   Wed, 13 Mar 2019 15:00:28 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Richard Biener <rguenther@...e.de>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: Kernel bug with MPX?

On 3/7/19 11:41 PM, Michal Hocko wrote:
> And this seems real leak because I just hit some bugons later
> 
> [112423.206497] BUG: Bad rss-counter state mm:000000007aa9c8a7 idx:1 val:25593
> [113601.595093] page:ffffea00041a07c0 count:2 mapcount:1 mapping:ffff88818d70e9a1 index:0x7f821adf6
> [113601.595102] anon 

FWIW, I was able to reproduce this.  No idea what the problem is, yet,
but I'm looking at it.