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=0.8 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 69BC1C47082 for ; Mon, 7 Jun 2021 11:45:11 +0000 (UTC) Received: from mail02.groups.io (mail02.groups.io [66.175.222.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D239F6105A for ; Mon, 7 Jun 2021 11:45:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D239F6105A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmx.at Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=bounce+64572+6498+4520388+8129055@lists.cip-project.org X-Received: by 127.0.0.2 with SMTP id IHvcYY4521723xVfChm7JXON; Mon, 07 Jun 2021 04:45:10 -0700 X-Received: from mout.gmx.net (mout.gmx.net [212.227.17.21]) by mx.groups.io with SMTP id smtpd.web11.31864.1623040297143356681 for ; Sun, 06 Jun 2021 21:31:37 -0700 X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c X-Received: from [178.190.128.91] ([178.190.128.91]) by web-mail.gmx.net (3c-app-gmx-bap15.server.lan [172.19.172.85]) (via HTTP); Mon, 7 Jun 2021 06:31:35 +0200 MIME-Version: 1.0 Message-ID: From: rainer.kloud@gmx.at To: cip-dev@lists.cip-project.org Subject: Re: [cip-dev] BUG: using smp_processor_id() in preemptible [00000000] code: TCPTSK/1809 Date: Mon, 7 Jun 2021 06:31:35 +0200 Importance: normal Sensitivity: Normal In-Reply-To: <20210606191433.GA18130@amd> References: <20210606191433.GA18130@amd> X-UI-Message-Type: mail X-Priority: 3 X-Provags-ID: V03:K1:IeZ1ucSceFvr5z1hsrYiTR18nBToKO7jYDBLrvw7M6skFPdeWWVXhs4BFHZ9Krzk6Scqf r8TvRl7hdooySW2zP5YQFbyIyy2fXo85PZMT8mW1/iSD2cP7tpZNWsd3UOpildtYyQZ9eSn31qf5 uB/UbNTWsS1xYSXV9dwF4MNZLHfv4JVBzzQySZdwCbvBdpEQOYhmRKQuAYpNWMZSVBoNcHyDD3Hx RpihSQellkiE/YRRKxx/d7dQUtDKvDK663mIuO+v0L2ZBceceVcinLydcAIlR06ufRHm289sUz5k K8= X-UI-Out-Filterresults: notjunk:1;V03:K0:fvGOKMDLGnU=:dlMtUHeLqMyaVZ8eFGIPZQ i2RW9QzycfROspgvk0WaWEMIS5n4673FojYD9NZbmv/h1dZPm93i8FPp59rOG0p9jw/262Lc4 01HTEtB/OWWPzeOjOFzn/q9a5NBpE44c5Con6pe1goJ1/owdOVzVsViMXqMmhUqOIqj/avzZa aIDmyvO7IGJpBx9Y/oRWd5wKb491WZEM7u60FAyf03VQSWMmH6J9SozWBb4dYfeSiWxpSyb63 T2XuYySs287hiNwv7XiNEeWj2WkhnZO/dFR92hSjpMufZotITZgzBqBMORisWyJUcTi99LaFB 7eKD3PUvvyZ5cKXmWmv2VbZJetpqQlCiOlkJSPDTu0AxLEaUEDOYjQfuWq/NqwQ+Q+RMpKucT f9zT/VhwAkkDZNaN29WJ+paEyU8YyCJridRJWFbttp4PoPvztE/WmoDvgJBspf9MY8UqtmYii JWesRt4VnZ8ZDoPM8UigQImrjEn8kE58umv2P8+U1cX8XbR66qxjI4+d09VQ6bJXVQ1xyZy3r GHCv26H+E6OOnT7KjPqmpy4Fx1fakvD8h2HC4YuDR2Gr06aT0K6YA8VynAl331Iy1W4+veBt1 WglJpgiPcurInTbLQXV3eSKRjcDS5VOXJNPrimrJdey4lRRAZxlJSg2TnaKcDg6Ppl8gvacFK j6My/OQ7a+9KB+CTCoAkHS8fVlsjmhmgkM/JGOphdEeU7f25ObeOkFa3r1vx+QNh6HQefkZX9 2AZlTgE+G4CzxbLlLwynMzUDKvs6GGwjD4Q4FYVZGM8B7pl0XCg7qsH3QqQ19udjlVyTmlt+S sSa96oyHExzcYtRouZjp6ls9l+CjA== Precedence: Bulk List-Unsubscribe: List-Subscribe: List-Help: Sender: cip-dev@lists.cip-project.org List-Id: Mailing-List: list cip-dev@lists.cip-project.org; contact cip-dev+owner@lists.cip-project.org Reply-To: cip-dev@lists.cip-project.org X-Gm-Message-State: dT1kdrgRPeP4t7giuHsfV0bQx4520388AA= Content-Type: multipart/mixed; boundary="skSlsODNy64ESaANZ9xD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lists.cip-project.org; q=dns/txt; s=20140610; t=1623066310; bh=xweHeOLg2hm8IdMsFPFSwHZvOozro7yrcF9i8KLvwLw=; h=Content-Type:Date:From:Reply-To:Subject:To; b=w8XfSrmycy7GnVgDN0cRtZS4n4T0wAyrtWkDzkiRwgXNpQhcx+EH2juUiyOzE/ov99q fHPo/fL5dcQEMvcc+qWuPWEZkatDxjZ62Ru9llyMRHtx1XWAm604Q2B4ccB2i9LTU84Ik 9V5gRFEDetYuSyuaYKl1cvVQ/MHTpsuh7ek= --skSlsODNy64ESaANZ9xD Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hello Pavel, =C2=A0 > I notice you are using -rt kernel=2E Do you actually need realtime > features? Yes, I actually need the realtime feature=2E I have one task which needts to run periodically in realtime (every 10ms)=2E > Can you try to reproduce the problem on 4=2E19=2E193? This is only a problem with the realtime patch=2E The patch introduces migrate_enable which is part of the callstack: Jun 1 09:11:46 sicam kernel: [46802=2E944165] BUG: using smp_processor_id= () in preemptible [00000000] code: TCPTSK/1809 Jun 1 09:11:46 sicam kernel: [46802=2E944210] caller is migrate_enable+0x= 40/0x488 Jun 1 09:11:46 sicam kernel: [46802=2E944221] CPU: 0 PID: 1809 Comm: TI4S= DTSK#135 Tainted: G W 4=2E19=2E165-cip41-rt18 #1 Jun 1 09:11:46 sicam kernel: [46802=2E944225] Hardware name: Altera SOCFP= GA Jun 1 09:11:46 sicam kernel: [46802=2E944252] [] (unwind_backtr= ace) from [] (show_stack+0x10/0x14) Jun 1 09:11:46 sicam kernel: [46802=2E944272] [] (show_stack) f= rom [] (dump_stack+0x94/0xa8) Jun 1 09:11:46 sicam kernel: [46802=2E944299] [] (dump_stack) f= rom [] (check_preemption_disabled+0x110/0x114) Jun 1 09:11:46 sicam kernel: [46802=2E944316] [] (check_preempt= ion_disabled) from [] (migrate_enable+0x40/0x488) Jun 1 09:11:46 sicam kernel: [46802=2E944338] [] (migrate_enabl= e) from [] (ip_finish_output2+0x21c/0x460) Jun 1 09:11:46 sicam kernel: [46802=2E944353] [] (ip_finish_out= put2) from [] (ip_output+0x140/0x184) Jun 1 09:11:46 sicam kernel: [46802=2E944364] [] (ip_output) fr= om [] (__ip_queue_xmit+0x134/0x40c) Jun 1 09:11:46 sicam kernel: [46802=2E944381] [] (__ip_queue_xm= it) from [] (__tcp_transmit_skb+0x53c/0xb20) Jun 1 09:11:46 sicam kernel: [46802=2E944392] [] (__tcp_transmi= t_skb) from [] (tcp_write_xmit+0x27c/0xfd0) Jun 1 09:11:46 sicam kernel: [46802=2E944403] [] (tcp_write_xmi= t) from [] (__tcp_push_pending_frames+0x34/0xa8) Jun 1 09:11:46 sicam kernel: [46802=2E944413] [] (__tcp_push_pe= nding_frames) from [] (tcp_sendmsg_locked+0x66c/0xc40) Jun 1 09:11:46 sicam kernel: [46802=2E944422] [] (tcp_sendmsg_l= ocked) from [] (tcp_sendmsg+0x28/0x3c) Jun 1 09:11:46 sicam kernel: [46802=2E944441] [] (tcp_sendmsg) = from [] (sock_sendmsg+0x14/0x24) Jun 1 09:11:46 sicam kernel: [46802=2E944455] [] (sock_sendmsg)= from [] (__sys_sendto+0xc4/0x104) Jun 1 09:11:46 sicam kernel: [46802=2E944467] [] (__sys_sendto)= from [] (sys_send+0x18/0x20) Jun 1 09:11:46 sicam kernel: [46802=2E944479] [] (sys_send) fro= m [] (ret_fast_syscall+0x0/0x5c) Jun 1 09:11:46 sicam kernel: [46802=2E944484] Exception stack(0xda337fa8 = to 0xda337ff0) Jun 1 09:11:46 sicam kernel: [46802=2E944493] 7fa0: 001= c6f2c 00000001 00000037 0020ae40 00000006 00000000 Jun 1 09:11:46 sicam kernel: [46802=2E944502] 7fc0: 001c6f2c 00000001 000= 00001 00000121 001651c8 001ea378 ffff0000 00000006 Jun 1 09:11:46 sicam kernel: [46802=2E944508] 7fe0: 00000000 b3efea18 000= 00000 b6a2ff40 Best Regards, Rainer --skSlsODNy64ESaANZ9xD Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Links: You receive all messages sent to this group. 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