From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f44.google.com (mail-pb0-f44.google.com [209.85.160.44]) by kanga.kvack.org (Postfix) with ESMTP id 0FE416B0035 for ; Sat, 31 May 2014 17:18:13 -0400 (EDT) Received: by mail-pb0-f44.google.com with SMTP id rq2so2900702pbb.31 for ; Sat, 31 May 2014 14:18:12 -0700 (PDT) Received: from mail-pd0-x22c.google.com (mail-pd0-x22c.google.com [2607:f8b0:400e:c02::22c]) by mx.google.com with ESMTPS id bv3si10949550pad.79.2014.05.31.14.18.11 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Sat, 31 May 2014 14:18:12 -0700 (PDT) Received: by mail-pd0-f172.google.com with SMTP id fp1so2116160pdb.17 for ; Sat, 31 May 2014 14:18:11 -0700 (PDT) Date: Sat, 31 May 2014 14:16:55 -0700 (PDT) From: Hugh Dickins Subject: Re: sleeping function warning from __put_anon_vma In-Reply-To: <538A43E0.5070706@suse.cz> Message-ID: References: <20140530000944.GA29942@redhat.com> <538A43E0.5070706@suse.cz> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Vlastimil Babka Cc: Dave Jones , Peter Zijlstra , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Sat, 31 May 2014, Vlastimil Babka wrote: > On 05/31/2014 10:33 PM, Hugh Dickins wrote: > > On Thu, 29 May 2014, Dave Jones wrote: > > > >> BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:47 > >> in_atomic(): 0, irqs_disabled(): 0, pid: 5787, name: trinity-c27 > >> Preemption disabled at:[] vtime_account_system+0x1e/0x50 > > Just wondering, since I'm not familiar with this kind of bug, is the line above > bogus or what does it mean? I don't see how the stack trace or the fix patch is > related to vtime_account_system? I know no more about it than you do, never noticed such a message before, and clearly not helpful here. I expect it's like those "last sysfs file" messages, occasionally useful but mostly noise. Hugh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org