From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934355AbdABWsq (ORCPT ); Mon, 2 Jan 2017 17:48:46 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:58468 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757042AbdABWse (ORCPT ); Mon, 2 Jan 2017 17:48:34 -0500 Date: Mon, 2 Jan 2017 23:48:30 +0100 From: Pavel Machek To: Tony Lindgren Cc: pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com Subject: Re: 4.10-rc1 on Nokia N900: regression, WARN_ON() omap_l3_smx.c Message-ID: <20170102224830.GB6817@amd> References: <20161229231411.GA6865@amd> <20170102181058.GF9325@atomide.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gj572EiMnwbLXET9" Content-Disposition: inline In-Reply-To: <20170102181058.GF9325@atomide.com> 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 --gj572EiMnwbLXET9 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > I forgot I had v4.10-rc1 running, and now I got warning on all the > > consoles (hand-copied). > >=20 > >=20 > > Unhandled fault: external abort on non-linefetch (0x1028) at > > 0xfa0ab060 > > ... > > Comm: kworker/0:0 Not tainted. > > Workqueue: events musb_irq_work > > ... > > PC is at musb_default_readb(). > > ... >=20 > This means the clocks are not enabled at that point. >=20 > > WARNING: CPU: 0 ... at drivers/bus/omap_l3_smx.c:166 > > omap3_l3_app_irq+0xcc/... > > Tainted: GDW. >=20 > If you comment out postcore_initcall_sync(omap3_l3_init); > in drivers/bus/omap_l3_smx.c you'll see the proper stack > trace instead of the l3 interrupt trace. The system will > hang at that point most likely. >=20 > > I do have patches to allow nfsroot over usb. But they worked ok in > > v4.9... Does anyone see it, too? >=20 > Hmm not much has changed since v4.9. Are you sure you > had v4.9 or some earlier v4.9-rc version? I believe v4.9 works. But... this may be tricky to reproduce. It happened once so far... after I reconnected N900 to computer when it was running for a while. I do have USB cable with power meter on it, thus "flakey". Lets see if it reappears... Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --gj572EiMnwbLXET9 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlhq2L4ACgkQMOfwapXb+vIX5gCeJdME2bP+Bp+uni1r1jpgpWjs oFQAn2SGiJShyDmfVcCLo6UF/8XLDVJM =FwpE -----END PGP SIGNATURE----- --gj572EiMnwbLXET9--