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Message-ID: <54AEB25E.9050205@redhat.com>
Date:	Thu, 08 Jan 2015 10:37:50 -0600
From:	Mark Langsdorf <mlangsdo@...hat.com>
To:	Michal Hocko <mhocko@...e.cz>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-mm@...ck.org,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Marek Szyprowski <m.szyprowski@...sung.com>
Subject: Re: Linux 3.19-rc3

On 01/08/2015 09:08 AM, Michal Hocko wrote:
> [CCing linux-mm and CMA people]
> [Full message here:
> http://article.gmane.org/gmane.linux.ports.arm.kernel/383669]

>> [ 1054.095277] DMA: 109*64kB (UR) 53*128kB (R) 8*256kB (R) 0*512kB 0*1024kB
>> 0*2048kB 1*4096kB (R) 0*8192kB 0*16384kB 1*32768kB (R) 0*65536kB = 52672kB
>> [ 1054.108621] Normal: 191*64kB (MR) 0*128kB 0*256kB 0*512kB 0*1024kB
>> 0*2048kB 0*4096kB 0*8192kB 0*16384kB 0*32768kB 0*65536kB = 12224kB
> [...]
>> [ 1054.142545] Free swap  = 6598400kB
>> [ 1054.145928] Total swap = 8388544kB
>> [ 1054.149317] 262112 pages RAM
>> [ 1054.152180] 0 pages HighMem/MovableOnly
>> [ 1054.155995] 18446744073709544361 pages reserved
>> [ 1054.160505] 8192 pages cma reserved
>
> Besides underflow in the reserved pages accounting mentioned in other
> email the free lists look strange as well. All free blocks with some memory
> are marked as reserved. I would suspect something CMA related.

I get the same failure with CMA turned off entirely. I assume that means
CMA is not the culprit.

--Mark Langsdorf

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