linux-kernel - Re: 4.1.28 is broken due to "mm/swap.c: flush lru pvecs on compound page arrival"

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Message-ID: <20160716145142.GA29738@bbox>
Date:	Sat, 16 Jul 2016 23:51:42 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Mikulas Patocka <mpatocka@...hat.com>
CC:	Lukasz Odzioba <lukasz.odzioba@...el.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Michal Hocko <mhocko@...e.com>,
	Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Ming Li <mingli199x@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	<stable@...r.kernel.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: 4.1.28 is broken due to "mm/swap.c: flush lru pvecs on compound
 page arrival"

On Sat, Jul 16, 2016 at 10:46:17AM -0400, Mikulas Patocka wrote:
> Hi
> 
> The patch c5ad33184354260be6d05de57e46a5498692f6d6 on the kernel v4.1.28 
> breaks the kernel. The kernel crashes when executing the boot scripts with 
> "kernel panic: Out of memory and no killable processes...". The machine 
> has 512MB ram and 1 core.
> 
> Note that the upstream kernel 4.7-rc4 with this patch works, but when the 
> patch is backported to the 4.1 branch, it makes the system unbootable.

It seems a bug was introduced at backport time, I think.
Please, look at http://marc.info/?l=linux-mm&m=146868046305014&w=2

> 
> Mikulas