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Date: Wed, 3 Sep 2014 11:06:02 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Sasha Levin <sasha.levin@oracle.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>, Dave Jones <davej@redhat.com>,
        Oleg Nesterov <oleg@redhat.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Rik van Riel <riel@redhat.com>, Michel Lespinasse <walken@google.com>,
        Jerome Marchand <jmarchan@redhat.com>,
        Davidlohr Bueso <davidlohr@hp.com>,
        Andy Lutomirski <luto@amacapital.net>, Hugh Dickins <hughd@google.com>
Subject: Re: mm: kernel BUG at mm/mmap.c:446!
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On Wed, 03 Sep 2014 13:24:09 -0400 Sasha Levin <sasha.levin@oracle.com> wrote:

> Hi all,
> 
> While fuzzing with trinity inside a KVM tools guest running the latest -next
> kernel, I've stumbled on the following spew:
> 
> [ 8419.384997] kernel BUG at mm/mmap.c:446!
> 
> ...
>
> I'm not sure which one of the possible reasons for BUG() it was since the
> pr_info didn't end up getting printed

grr.

> (I'm sending a patch to make that code nicer).

pr_emerg(), please.