From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sat, 29 Dec 2012 00:38:00 +0100 (CET) Received: from qmta03.westchester.pa.mail.comcast.net ([76.96.62.32]:58939 "EHLO qmta03.westchester.pa.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S6817293Ab2L1Xh7IZwIK (ORCPT ); Sat, 29 Dec 2012 00:37:59 +0100 Received: from omta22.westchester.pa.mail.comcast.net ([76.96.62.73]) by qmta03.westchester.pa.mail.comcast.net with comcast id hAj11k0071ap0As53Bds6m; Fri, 28 Dec 2012 23:37:52 +0000 Received: from [192.168.1.13] ([76.106.69.86]) by omta22.westchester.pa.mail.comcast.net with comcast id hBdr1k0051rgsis3iBdrMA; Fri, 28 Dec 2012 23:37:52 +0000 Message-ID: <50DE2D49.1000603@gentoo.org> Date: Fri, 28 Dec 2012 18:37:45 -0500 From: Joshua Kinard User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Ralf Baechle CC: Linux MIPS List Subject: Re: Unhandled kernel unaligned access on IP32 w/ network I/O && 3.7.1? References: <50DD1FB9.6060707@gentoo.org> <20121228215225.GC6786@linux-mips.org> In-Reply-To: <20121228215225.GC6786@linux-mips.org> X-Enigmail-Version: 1.4.6 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig765BB01665E1675B9B7159D6" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20121106; t=1356737872; bh=MCC5oo/Fv7bhoHdgZGXN0W2GfI1dDZFDP5ap8u/59PA=; h=Received:Received:Message-ID:Date:From:MIME-Version:To:Subject: Content-Type; b=XyVh+EqcvXtgIiyySZINcNzf8DCPY7I8eGuYyJqxafNX5eOSH2U59PYdlLXFlGsRn 2Hs4z5oH9xOsFGYWE1v3OQZirY3cTiunQATVX4NOUv7QDObR5SjxHNH09HtVurbmu+ fP8AdQhubbDmGHaPT5zVVlTbn4a81VLpxtzYb9Byfcr7nNB8QO/ztLwhvtBudMvnKD 8DSty9szcLxUDTLKgZSCGVkFmMJ0coZn7pelHmhmJSENV+86SqgRC5I132xqCknjYh YGS0f+m/tjwHrQEESmQcEfhCcJWvORyCLGK5+yt096PUbdAeLi+qPlqMq+KLoFRjIT fF7+Cp2eOx70w== X-archive-position: 35348 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 Return-Path: This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig765BB01665E1675B9B7159D6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 12/28/2012 4:52 PM, Ralf Baechle wrote: > On Thu, Dec 27, 2012 at 11:27:37PM -0500, Joshua Kinard wrote: >=20 >> Has anyone run into an unhandled kernel unaligned access under 3.7.1? = I've >> triggered it twice w/ network I/O on an SGI IP32 machine, however, the= stack >> trace does not appear to be specific to any of IP32's own drivers. 3.= 6.7 >> was very stable, and the two oopses I've triggered so far both happene= d >> under 3.7.1. >> >> It looks like the culprit is in sk_stream_alloc_skb or tcp_sendmsg, ho= wever, >> I have little experience in the higher-level networking stack within L= inux >> and wanted to see if anyone else has triggered this on other MIPS syst= ems. >> >> Seems to happen when I am logged in via SSH (on IPv6) and generating a= burst >> of console output. >> >> Unhandled kernel unaligned access[#3]: >> Cpu 0 >> $ 0 : 0000000000000000 0000000000000010 0000000000000000 bfffff00567= 1271c >> $ 4 : 0000000000000000 0000000000000000 0000000000000000 00000000000= 00000 >> $ 8 : 980000005c24e000 0000000000000000 980000005c24e000 00000000000= 000cc >> $12 : ffffffff9001fce1 000000001000001e fffffffffffff000 00000000000= 0001f >> $16 : 980000005c00fa40 ffffffffde0300b8 ffffff0000000000 00000000000= 00005 >> $20 : 000000007f875700 00000000000005a8 0000000000000008 00000000000= 00005 >> $24 : 0000000000000001 00000000000003f0 >> $28 : 980000005c00c000 980000005c00fa10 0000000000000000 ffffffff800= 059a0 >> Hi : 0000000007a11c93 >> Lo : b645a1cac992645e >> epc : ffffffff8000b700 do_ade+0x1b0/0x480 >> Tainted: G D > ^^^ >=20 > This kernel has already oopsed before. Which means this oops message i= s > pretty much worthless. >=20 > Ralf I'll try to recapture it over the weekend. This was the only output left= in the serial console buffer when I reattached, as I had the console disconnected when it happened. Thanks! --=20 Joshua Kinard Gentoo/MIPS kumba@gentoo.org 4096R/D25D95E3 2011-03-28 "The past tempts us, the present confuses us, the future frightens us. A= nd our lives slip away, moment by moment, lost in that vast, terrible in-bet= ween." --Emperor Turhan, Centauri Republic --------------enig765BB01665E1675B9B7159D6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) iQIcBAEBAgAGBQJQ3i1PAAoJENsjoH7SXZXjdt0P/j9y7PNKPeYBF+Ipjwj16JDt iCLZk0yVEo1LfqJr8zlaC5MNxP3grYpFZs+WRsj0l82hh7HOH10lSGr5qGocS2Eu tyafodoAaR5mdYauj/H31F7A0uJiZRUBVMEEK8agL5BaUlu0hvyw5pcPFSepFNLS Cgy5GFnQHoi3Fa+Gh/VBlRR06TFfvCdh42MzF0lGDgPgwArpG1ew0IIHJR03hKhG Prai0DmqkjvP6AmY0QSbOrgcCAWmWXfBpPQ1N0NND5lsrW92iOyJSgS/ex2awk3a oP/NiG0zNinTnmyR8bAcQmrD6zmBywHFN92z+Qjl4Sk4YAdIWGfi5JJVvcqhPIRV yNb7rejoIwAfsL9r/DdTQnGfY+N1J0PDrHFsuF7aTd+drMSL9L+1o50Ilrmqd5+r vQLOnrhBr6xji+DFWZ2I69c3rNhKzyxxuyImEQD4EAm4Yk7qlG910cFoEiddADAU 3euG3uVk6x1FRunWo5C/M7zo9s/7nEQUlIu/0/reCU+MAmJYHe+LfVJckHDHp6K3 QlROS+0BdpVnkQC5vnM5E2meFtxRK5IJMVRkCo4vFGKjrrJUa3BJrzqJeO0Yes1I qUNAdvHfL1ZFjXnE1ztHSe5i9QWEeFGWI7W/fz6Job8QLZWPDHiWJFi5kDozT5bl q7C2BQkbvnekSFSqM6DV =4DXn -----END PGP SIGNATURE----- --------------enig765BB01665E1675B9B7159D6--