From owner-freebsd-arm@freebsd.org Fri Oct 6 16:25:58 2017 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 827FCE3B011 for ; Fri, 6 Oct 2017 16:25:58 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (www.zefox.net [69.239.235.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "www.zefox.org", Issuer "www.zefox.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 3850164F5E for ; Fri, 6 Oct 2017 16:25:58 +0000 (UTC) (envelope-from fbsd@www.zefox.net) Received: from www.zefox.net (localhost [127.0.0.1]) by www.zefox.net (8.15.2/8.15.2) with ESMTPS id v96Fwt3Z040202 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Fri, 6 Oct 2017 08:58:56 -0700 (PDT) (envelope-from fbsd@www.zefox.net) Received: (from fbsd@localhost) by www.zefox.net (8.15.2/8.15.2/Submit) id v96Fwtsv040201; Fri, 6 Oct 2017 08:58:55 -0700 (PDT) (envelope-from fbsd) Date: Fri, 6 Oct 2017 08:58:54 -0700 From: bob prohaska To: freebsd-arm@freebsd.org Subject: pmap fault during buildworld on rpi2 Message-ID: <20171006155854.GA40189@www.zefox.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.24 (2015-08-30) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Oct 2017 16:25:58 -0000 For about one month now, buildworld has been crashing with a pmap error. Rebooting an older kernel always seems to solve the problem, but on rebooting the newly-compiled system the pmap fault happens again on the next buildworld. There seems to be no such problem during other compilations. A top window freezes with cc and ld as the dominant processes. The last kernel I have which works is r322520. Since nobody else seems to be reporting this behavior it's tempting to think the problem is local. Can anyone suggest where I might look? Console, top and log are at: http://www.zefox.net/~fbsd/rpi2/crashes/crash_10_6_17/ Thanks for reading, bob prohaska