From owner-freebsd-current@freebsd.org Wed Aug 15 13:55:43 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E483610857C4 for ; Wed, 15 Aug 2018 13:55:42 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 60CB68E107; Wed, 15 Aug 2018 13:55:42 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id w7FDtVNO021187 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 15 Aug 2018 16:55:34 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua w7FDtVNO021187 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id w7FDtVKJ021186; Wed, 15 Aug 2018 16:55:31 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 15 Aug 2018 16:55:31 +0300 From: Konstantin Belousov To: Michael Gmelin Cc: "freebsd-current@freebsd.org" , Matthias Apitz , jhb@freebsd.org Subject: Re: Fatal trap 12: page fault on Acer Chromebook 720 (peppy) Message-ID: <20180815135531.GA2340@kib.kiev.ua> References: <20180603215020.452a81d8@bsd64.grem.de> <20180603205340.GS3789@kib.kiev.ua> <20180604004632.56ca6afa@bsd64.grem.de> <20180604110654.GA2450@kib.kiev.ua> <20180604231756.2ed2adb9@bsd64.grem.de> <20180605131135.GH2450@kib.kiev.ua> <20180606010625.62632920@bsd64.grem.de> <20180815005106.69402d23@bsd64.grem.de> <20180815130447.GZ2340@kib.kiev.ua> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tom.home X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Aug 2018 13:55:43 -0000 On Wed, Aug 15, 2018 at 03:52:37PM +0200, Michael Gmelin wrote: > > > > On 15. Aug 2018, at 15:04, Konstantin Belousov wrote: > > > >> On Wed, Aug 15, 2018 at 12:51:06AM +0200, Michael Gmelin wrote: > >> Reviving this old thread, since I just updated to r337818 and a similar > >> problem is happening again. Since the fix in r334799 (review > >> https://reviews.freebsd.org/D15675) (mp_)machdep.c have been touched, > >> so maybe this is related > >> (https://svnweb.freebsd.org/base?view=revision&revision=334799). > >> > >> Please see the screenshot of the panic below: > >> https://gist.github.com/grembo/78d0f2a100dd4f16775b85a118769658 > >> > >> This is me not digging any deeper, hoping that this is something > >> obvious. Please let me know if you need more input. > > > > I do not see how recent mp_machdep.c changes could affect this. > > Can you try newest kernel but old loader ? > > I will try (but that will take a while). Oh, also, it still boots in save mode/with smp disabled. Right, this is because the access to that address through DMAP is only needed when configuring AP startup resources. Also, I think it is safe to suggest that the bisect is needed.