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