linux-kernel - Re: bad rss-counter message in 3.14rc5

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Message-ID: <20140305175725.GB16335@redhat.com>
Date:	Wed, 5 Mar 2014 12:57:25 -0500
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: bad rss-counter message in 3.14rc5

On Wed, Mar 05, 2014 at 12:45:03PM -0500, Dave Jones wrote:
 > I just saw this on my box that's been running trinity..
 > 
 > [48825.517189] BUG: Bad rss-counter state mm:ffff880177921d40 idx:0 val:1 (Not tainted)
 > 
 > There's nothing else, no trace, nothing.  Any ideas where to begin with this?

ah, on the serial console there was also this truncated warning..

[48825.517189] BUG: Bad rss-counter state mm:ffff880177921d40 idx:0 val:1 (Not tainted)
[48924.133273] ------------[ cut here ]------------
[48924.133391] kernel BUG at include/linux/swapops.h:131!

	Dave

124 static inline struct page *migration_entry_to_page(swp_entry_t entry)
125 {
126         struct page *p = pfn_to_page(swp_offset(entry));
127         /*
128          * Any use of migration entries may only occur while the
129          * corresponding page is locked
130          */
131         BUG_ON(!PageLocked(p));
132         return p;
133 }

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