From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 26 Aug 2014 15:17:06 +0200 (CEST) Received: from qmta05.westchester.pa.mail.comcast.net ([76.96.62.48]:54643 "EHLO qmta05.westchester.pa.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S27006877AbaHZNREkAkXt (ORCPT ); Tue, 26 Aug 2014 15:17:04 +0200 Received: from omta12.westchester.pa.mail.comcast.net ([76.96.62.44]) by qmta05.westchester.pa.mail.comcast.net with comcast id jQBp1o0040xGWP855RGyXw; Tue, 26 Aug 2014 13:16:58 +0000 Received: from [192.168.1.13] ([50.190.84.14]) by omta12.westchester.pa.mail.comcast.net with comcast id jRGx1o0100JZ7Re3YRGy0s; Tue, 26 Aug 2014 13:16:58 +0000 Message-ID: <53FC88C8.6000209@gentoo.org> Date: Tue, 26 Aug 2014 09:16:56 -0400 From: Joshua Kinard User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.0 MIME-Version: 1.0 To: Ralf Baechle CC: linux-mips@linux-mips.org Subject: Re: 16k or 64k PAGE_SIZE and "illegal instruction" (signal -4) errors References: <53FC5300.4070902@gentoo.org> <20140826102004.GA22221@linux-mips.org> <53FC6A50.9090709@gentoo.org> <20140826120326.GB24146@linux-mips.org> In-Reply-To: <20140826120326.GB24146@linux-mips.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20140121; t=1409059018; bh=7gp1G6u+QgQQ0fxh7XnDNCs3uwuZFkDZFuiYlCjs+IU=; h=Received:Received:Message-ID:Date:From:MIME-Version:To:Subject: Content-Type; b=o04sf6UzO85cynPOKfH6eYKrp5OHUPReI9+02Ooex/4TVY99zw3somRFNr7+GnzM2 Of7tBWwWnZTgKfEhFFJ+Nu7f5KuCqjTO3HGSuH+23WsS0nuDrwgtZOfdYw2k6ZeZAx hUBWqsZFmiTdBPJooJKhvobFQiE6E3GB14hhrECvWnIlga4fp4273qrff5+fISv4G1 avITkjkjevdPS/tHELSSmFFAqdJrAVTKt9x2Xqtga9tE9G/d5fozSgW2QhgX/evNFS GmWdmW8FvyyP5H+2lXKc50+kIhJUmX9Wkec9mLepszjf1262EeHUylRzxqb42dZMAV VC/N+toDBJXTw== Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 42259 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: kumba@gentoo.org Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On 08/26/2014 08:03, Ralf Baechle wrote: > On Tue, Aug 26, 2014 at 07:06:56AM -0400, Joshua Kinard wrote: > >> o32 userland is the primary on both systems. However, the last SIGILL was >> under the 64k PAGE_SIZE kernel inside of an n32 chroot compiling the 'boost' >> package on the Octane, which I restarted that and it's not complained since. >> Also got SIGILL on the 16k PAGE_SIZE kernel when I booted 16k PAGE_SIZE the >> first time and ran 'ps'. Subsequent runs of 'ps' didn't reproduce the >> error. Also saw SIGILLs in the bootlog of the 16k PAGE_SIZE kernel when >> "rm" was ran once (couldn't reproduce) and when mdadm tried to put one of >> the arrays back together. Subsequent runs using similar argument lines >> don't reproduce once I got to a root shell. >> >> Being it's a Gentoo install...the o32 userland is pretty fresh. Especially >> on the Octane, where I literally rebuilt the old userland over 2-3 times >> just to make sure all the old 5-year cruft was gone. The n32 userland >> chroot is brand-spanking new. gcc-4.7.x only for now on both, because of >> PR61538 in gcc. Latest binutils. >> >> The O2 is chugging away happily so far in updating a bunch of packages. So >> I am leaning towards this being another quirk I have to hunt down in the >> Octane's code again. There isn't much in the Octane-specific code that >> deals with memory, though -- it seems the higher-level MIPS memory code >> handles most things just fine. > > Can you enable core dumps? I'm wondering about the EPC of the crashed > process. If it's at a function entry or the beginning of a page that > might indicate there is an issue with flushing caches after the containing > page got loaded. Also interesting to know if this possibly happened in a > signal trampoline or VDSO. > > These are just the usual suspects - nothing indicates this case is actually > related. (Missed the reply all on the last one) Enabled coredumps and got the 'shash' program to fail a second time (first program to do so)...so I'll rebuild that with debugging symbols and try to trip it up again later on. Is a core file from a binary w/o debugging of any value? -- Joshua Kinard Gentoo/MIPS kumba@gentoo.org 4096R/D25D95E3 2011-03-28 "The past tempts us, the present confuses us, the future frightens us. And our lives slip away, moment by moment, lost in that vast, terrible in-between." --Emperor Turhan, Centauri Republic