linux-kernel - Re: mm: kernel BUG at mm/mmap.c:446!

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Message-Id: <20140903110602.a369cc8efaab5c55b66e8a42@linux-foundation.org>
Date:	Wed, 3 Sep 2014 11:06:02 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Sasha Levin <sasha.levin@...cle.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>, Oleg Nesterov <oleg@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Michel Lespinasse <walken@...gle.com>,
	Jerome Marchand <jmarchan@...hat.com>,
	Davidlohr Bueso <davidlohr@...com>,
	Andy Lutomirski <luto@...capital.net>,
	Hugh Dickins <hughd@...gle.com>
Subject: Re: mm: kernel BUG at mm/mmap.c:446!

On Wed, 03 Sep 2014 13:24:09 -0400 Sasha Levin <sasha.levin@...cle.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.
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