Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932380AbaKUQ1s (ORCPT ); Fri, 21 Nov 2014 11:27:48 -0500 Received: from mail-qg0-f42.google.com ([209.85.192.42]:38884 "EHLO mail-qg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758547AbaKUQ1q (ORCPT ); Fri, 21 Nov 2014 11:27:46 -0500 Date: Fri, 21 Nov 2014 11:27:42 -0500 From: Tejun Heo To: Andy Lutomirski Cc: Thomas Gleixner , Frederic Weisbecker , Linus Torvalds , Dave Jones , Don Zickus , Linux Kernel , the arch/x86 maintainers , Peter Zijlstra , Arnaldo Carvalho de Melo Subject: Re: frequent lockups in 3.18rc4 Message-ID: <20141121162742.GB15461@htj.dyndns.org> References: <20141119235033.GE11386@lerouge> <20141120122339.GA14877@htj.dyndns.org> <20141120221122.GA25393@htj.dyndns.org> <20141120230514.GB25393@htj.dyndns.org> <20141120233920.GC25393@htj.dyndns.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, Andy. On Thu, Nov 20, 2014 at 03:55:09PM -0800, Andy Lutomirski wrote: > That doesn't appear to have anything to with nmi though, right? I thought that was the main offender but, apparently, not any more. > Wouldn't this issue be fixed by moving the vmalloc_fault check into > do_page_fault before exception_enter? Can you please elaborate why that'd fix the issue? I'm not intimiately familiar with the fault handling so it'd be great if you can give me some pointers in terms of where to look at. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/