From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1E7DAC433B4 for ; Thu, 22 Apr 2021 08:25:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CAB3E6144A for ; Thu, 22 Apr 2021 08:25:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230270AbhDVIZk (ORCPT ); Thu, 22 Apr 2021 04:25:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40574 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229655AbhDVIZj (ORCPT ); Thu, 22 Apr 2021 04:25:39 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25B2CC06174A for ; Thu, 22 Apr 2021 01:25:05 -0700 (PDT) Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=bjornoya.blackshift.org) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lZUdz-0000jT-Oc; Thu, 22 Apr 2021 10:25:03 +0200 Received: from pengutronix.de (unknown [IPv6:2a03:f580:87bc:d400:621c:4946:3355:86a4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: mkl-all@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id A1BA5613930; Thu, 22 Apr 2021 08:25:02 +0000 (UTC) Date: Thu, 22 Apr 2021 10:25:01 +0200 From: Marc Kleine-Budde To: Daniel =?utf-8?B?R2zDtmNrbmVy?= Cc: netdev@vger.kernel.org, linux-can@vger.kernel.org Subject: Re: Softirq error with mcp251xfd driver Message-ID: <20210422082501.mvi5x6seiokglf4e@pengutronix.de> References: <20210310064626.GA11893@homes.emlix.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="pwalfuj3rnpezbql" Content-Disposition: inline In-Reply-To: <20210310064626.GA11893@homes.emlix.com> X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-can@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org --pwalfuj3rnpezbql Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 10.03.2021 07:46:26, Daniel Gl=C3=B6ckner wrote: > Hi, >=20 > the mcp251xfd driver uses a threaded irq handler to queue skbs with the > can_rx_offload_* helpers. I get the following error on every packet until > the rate limit kicks in: >=20 > NOHZ tick-stop error: Non-RCU local softirq work is pending, handler > #08!!! FYI: echo 1 > /sys/class/net/can0/threaded Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | --pwalfuj3rnpezbql Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEK3kIWJt9yTYMP3ehqclaivrt76kFAmCBMtsACgkQqclaivrt 76kHFwgArWeDl80non1JVFQMICOkPLGBeGX4Vs6cuxnf0uZOEJV1ZDbHzFwpzcd8 lKcEjns/uEialSe7agov5XQHPbLB2iqyAA8uAPtlkFCUml/T8KsXBTw2aNsV6Ss0 +Q5sabQnVHCbVYRgR9POiQVHXWFMGw45dyA46tRCGbo8e8P3Ufo9GQYzM74GbGqE wuY4ervyoGkCFkyfAPgWiRU1XXFihiMvsji1MorRuSl3TMzGul0HuYMp9t3fPiZ4 a+wpfKiiLvCYCPYjNglGBeWTQDA+BDxsd0CK6N4rlYy1elkSfAMU+B+VyXgVepEA bEaiCF2UINuYeVdfiLLSJgzS88c4kQ== =gbye -----END PGP SIGNATURE----- --pwalfuj3rnpezbql--