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Date: Fri, 10 Jun 2016 14:59:16 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: mhocko <mhocko@suse.de>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Christoph Lameter <cl@linux.com>, Michal Hocko <mhocko@kernel.org>,
        Vlastimil Babka <vbabka@suse.cz>,
        Stephen Rothwell <sfr@canb.auug.org.au>, linux-mm@kvack.org,
        linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
        linux-kernel-owner@vger.kernel.org
Subject: Re: [mmots-2016-06-09-16-49] sleeping function called from
 slab_alloc()
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On Fri, 10 Jun 2016 11:55:54 +0200 mhocko <mhocko@suse.de> wrote:

> On 2016-06-10 11:50, Sergey Senozhatsky wrote:
> > Hello,
> > 
> > forked from http://marc.info/?l=linux-mm&m=146553910928716&w=2
> > 
> > new_slab()->BUG->die()->exit_signals() can be called from atomic
> > context: local IRQs disabled in slab_alloc().
> 
> I have sent a patch to drop the BUG() from that path today. It
> is just too aggressive way to react to a non-critical bug.
> See 
> http://lkml.kernel.org/r/1465548200-11384-2-git-send-email-mhocko@kernel.org

Doesn't this simply mean that Sergey's workload will blurt a pr_warn()
rather than a BUG()?  That still needs fixing.  Confused.