From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: v4.13 on nokia n900: oops during tethering Date: Mon, 19 Feb 2018 20:04:54 +0100 Message-ID: <20180219190454.GB19366@amd> References: <20180212201000.GA25608@amd> <20180213222412.GA1116@mara.localdomain> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0439843160307421337==" Return-path: In-Reply-To: <20180213222412.GA1116@mara.localdomain> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Sakari Ailus Cc: ivo.g.dimitrov.75@gmail.com, khilman@kernel.org, tony@atomide.com, aaro.koskinen@iki.fi, kernel list , sre@kernel.org, martijn@brixit.nl, Filip =?utf-8?Q?Matijevi=C4=87?= , abcloriens@gmail.com, pali.rohar@gmail.com, clayton@craftyguy.net, linux-omap@vger.kernel.org, patrikbachan@gmail.com, linux-arm-kernel , serge@hallyn.com List-Id: linux-omap@vger.kernel.org --===============0439843160307421337== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="cPi+lWm09sJ+d57q" Content-Disposition: inline --cPi+lWm09sJ+d57q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > On Mon, Feb 12, 2018 at 09:10:00PM +0100, Pavel Machek wrote: > > Hi! > >=20 > > During tethering, I got oops in ssi_stop_tx(), followed by failure of > > GPRS. I used GPRS tethering a lot with some older kernel, and it was > > stable for hours. > >=20 > > It seems v4.12 has the same problem. In v4.15 usb networking does not > > work at all, so I can't test... v4.10 seems to have similar problem. (T= esting is > > slighlty tricky, as my internet connection is ... tethering using > > N900.) >=20 > Based on a quick look ssi_stop_tx() is called too many times (i.e. once > more than ssi_start_tx()). This would appear to be an interal problem > with the SSI codebase (or whatever lies there; I don't know the current > codebase). If I change BUG_ON in ssi_stop_tx() to warning and return, I see the warning and system survives it. > Did this work in the past? When? There appear to have been changes in IRQ > handling some time in 2016... Actually, I'm not sure any more :-(. I did have tethering running overnight some time ago, but it was on slower mobile data, and over wifi. Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --cPi+lWm09sJ+d57q Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlqLH9YACgkQMOfwapXb+vIHsACdHeFJXa7lW8T4XvB/Fmk9W9xp 0v0AniVhg8FnM63kPy+jXVlcHtH0eGvO =dZOh -----END PGP SIGNATURE----- --cPi+lWm09sJ+d57q-- --===============0439843160307421337== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0439843160307421337==--