From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 0BEE13B2A4 for ; Sat, 5 Jan 2019 08:20:37 -0500 (EST) Received: by mail-wr1-x441.google.com with SMTP id z5so38868490wrt.11 for ; Sat, 05 Jan 2019 05:20:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=heistp.net; s=google; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=YvecHdIUg65FG0b29MhZ0moDzNUpvn5PIEto4DEZy78=; b=YoDu6mKNsEv4BQWJy0B75ueVKCfETYxw29QFrozuFlAIYbQWoqpELXvhXhQOzufLVY lfA5dEkWGH3rYOiVXetCwyG77lF8A7S87eNq/IBloYHoU/0X3PbV7PBIQ44Bs8wHn07x 4EOmF2gYTfYFBHYDZhHpjbFs5t/uoWugONl6gdSVZfwIUKcGmT2n+W+RdMYi3EnWJ9kf ajaMbftURxlJsPBMUSPUdIJ1xd5F1SVsL+bsMxxFNy6eTGJsY3NlHJE0bDFJ8zrHFv3X mNmq/4jrhES6jxGCy7uqM3Rc7clJ1PBwZAJu6fYEDRsfWg24NIQUSgac1RtVNygIBx2p jJHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=YvecHdIUg65FG0b29MhZ0moDzNUpvn5PIEto4DEZy78=; b=Rz7vey+YJYaYu2NgyLW5Nkum2a9zmwJ2rwK0/fWR3QA0uGATZu0v15jbA5tXI9jtmH jaAH3tmY44jY+OZm4ueUgCGPYsh4AinSLTKDcfuw5durSLB1zrpnWEBZt9ZM6Sr0ECvp kHtG9JAMvpAMWg/IcebkFNkj+TrmzAp/IDWvrwW8yoMKKusERHnlsK4jklnjELQusGOv jWSP6nBEqZMV9Tr4t08DmVlJEA1rX+6wPdXMsCvSRpVmVE5LqDfnoUWjZePqIUNZ1nBs 7HWgbYqKH4F6PQzRTtJ5gow/r55QHl1C1y3YTroneSxElTg5lhdJwEXMX5hnE9Ojpnyl aelw== X-Gm-Message-State: AJcUukeYlStlUf6g50ds7KBtCN/IWKeIyk9DGgqvbiYmqAQF1pNJXqlJ 2i0pIsgWxDli52ARJe1V36cj5A== X-Google-Smtp-Source: ALg8bN5Y8Un5XMyRF5Yo+xJAVtfY3SUIQYmrDeLyO/hzvHfjAKbQepVxWRoii8jVcgDf4Hjk4VMoIg== X-Received: by 2002:a5d:504f:: with SMTP id h15mr47441879wrt.83.1546694435944; Sat, 05 Jan 2019 05:20:35 -0800 (PST) Received: from tron.luk.heistp.net (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id l20sm103249674wrb.93.2019.01.05.05.20.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 05 Jan 2019 05:20:35 -0800 (PST) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Pete Heist In-Reply-To: <87r2drxnal.fsf@toke.dk> Date: Sat, 5 Jan 2019 14:20:34 +0100 Cc: Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <45D43135-318B-48AD-B09B-69BBB034CE12@heistp.net> References: <5482A3CA-9C36-4DDE-A858-24D8467F70C7@heistp.net> <8736q8yumt.fsf@toke.dk> <4C422792-7E51-4DBA-A229-FA7D3F987FB6@heistp.net> <87zhsgxdao.fsf@toke.dk> <87wonjxvss.fsf@toke.dk> <0077CC34-490F-4D76-82D3-BE37B27F2E1C@heistp.net> <49A6DCF8-BE98-47F4-9C66-6B4288390A58@heistp.net> <87tvinxos7.fsf@toke.dk> <87r2drxnal.fsf@toke.dk> To: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Cake] cake infinite loop(?) with hfsc on one-armed router X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jan 2019 13:20:37 -0000 > On Jan 5, 2019, at 2:10 PM, Toke H=C3=B8iland-J=C3=B8rgensen = wrote: >=20 > Hmm, that's odd. Could you try adding this debugging line in > adjust_parent_qlen(), right before the sch->q.qlen +=3D n line: >=20 > net_info_ratelimited("Adjusting parent qdisc %d with pkt = +=3D %d, len +=3D %d", > parentid, n, len); >=20 > And see if you actually get any of those lines in your dmesg? I do see the messages twice, then not after that in the rest of the = output... root@apu1a:~# [ 1740.883957] Adjusting parent qdisc 65537 with pkt +=3D = 3, len +=3D 0 [ 1740.889856] ------------[ cut here ]------------ [ 1740.894710] WARNING: CPU: 1 PID: 0 at net/sched/sch_hfsc.c:1427 = 0xf9fe74ef() [ 1740.901802] Modules linked in: em_meta cls_basic sch_hfsc sch_cake(O) = xt_ACCOUNT(O) ipt_Rn [ 1740.952881] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G O = 3.16.7-ckt9-voyage #1 [ 1740.960891] Hardware name: PC Engines APU/APU, BIOS 4.0 09/08/2014 [ 1740.967079] 00000000 00000000 f5c99d94 c13167e9 00000000 f5c99dac = c102a7dd f9fe74ef [ 1740.975032] f547a400 00000000 00000000 f5c99dbc c102a803 00000009 = 00000000 f5c99ddc [ 1740.982981] f9fe74ef f547a7c8 52ee0901 00000006 f547a400 00000000 = 00000040 f5c99df8 [ 1740.990936] Call Trace: [ 1740.993411] [] dump_stack+0x41/0x52 [ 1740.997870] [] warn_slowpath_common+0x5c/0x73 [ 1741.003196] [] ? 0xf9fe74ee [ 1741.006960] [] warn_slowpath_null+0xf/0x13 [ 1741.012018] [] 0xf9fe74ee [ 1741.015608] [] __qdisc_run+0x81/0xf0 [ 1741.020149] [] __dev_queue_xmit+0x23d/0x35f [ 1741.025296] [] dev_queue_xmit+0xa/0xc [ 1741.029927] [] ip_finish_output+0x345/0x73d [ 1741.035081] [] ip_output+0x73/0xaf [ 1741.039449] [] ip_forward_finish+0x66/0x6b [ 1741.044511] [] ip_forward+0x2b0/0x36d [ 1741.049138] [] ip_rcv_finish+0x267/0x29a [ 1741.054026] [] ip_rcv+0x2b4/0x338 [ 1741.058312] [] __netif_receive_skb_core+0x467/0x4b6 [ 1741.064159] [] __netif_receive_skb+0x48/0x59 [ 1741.069395] [] netif_receive_skb_internal+0x59/0x85 [ 1741.075244] [] napi_gro_complete+0x87/0x8c [ 1741.080305] [] napi_gro_flush+0x3e/0x53 [ 1741.085107] [] napi_complete+0x17/0x27 [ 1741.089823] [] 0xf81161a2 [ 1741.093420] [] net_rx_action+0x56/0x10e [ 1741.098230] [] __do_softirq+0x91/0x175 [ 1741.102953] [] ? __hrtimer_tasklet_trampoline+0x1a/0x1a [ 1741.109149] [] do_softirq_own_stack+0x1d/0x23 [ 1741.114463] [] irq_exit+0x34/0x75 [ 1741.119397] [] do_IRQ+0x92/0xa6 [ 1741.123509] [] common_interrupt+0x2c/0x40 [ 1741.128485] [] ? cpuidle_enter_state+0x37/0x96 [ 1741.133900] [] cpuidle_enter+0xf/0x12 [ 1741.138528] [] cpu_startup_entry+0x135/0x1e1 [ 1741.143764] [] start_secondary+0x1a6/0x1ab [ 1741.148830] ---[ end trace 88c72563cbf4d106 ]--- [ 1741.153570] Adjusting parent qdisc 65537 with pkt +=3D 5, len +=3D 0 [ 1741.159457] ------------[ cut here ]------------ [ 1741.164287] WARNING: CPU: 1 PID: 0 at net/sched/sch_hfsc.c:1427 = 0xf9fe74ef() [ 1741.171342] Modules linked in: em_meta cls_basic sch_hfsc sch_cake(O) = xt_ACCOUNT(O) ipt_Rn [ 1741.222421] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W O = 3.16.7-ckt9-voyage #1 [ 1741.230423] Hardware name: PC Engines APU/APU, BIOS 4.0 09/08/2014 [ 1741.236611] 00000000 00000000 f5c99d70 c13167e9 00000000 f5c99d88 = c102a7dd f9fe74ef [ 1741.244566] f547a400 00000000 00000000 f5c99d98 c102a803 00000009 = 00000000 f5c99db8 [ 1741.252512] f9fe74ef f547a7c8 532e51d6 00000006 f547a400 00000000 = 00000040 f5c99dd4 [ 1741.260462] Call Trace: [ 1741.262932] [] dump_stack+0x41/0x52 [ 1741.267394] [] warn_slowpath_common+0x5c/0x73 [ 1741.272719] [] ? 0xf9fe74ee [ 1741.276487] [] warn_slowpath_null+0xf/0x13 [ 1741.281552] [] 0xf9fe74ee [ 1741.285141] [] __qdisc_run+0x81/0xf0 [ 1741.289682] [] __dev_queue_xmit+0x23d/0x35f [ 1741.294829] [] dev_queue_xmit+0xa/0xc [ 1741.299485] [] ip_finish_output+0x345/0x73d [ 1741.304644] [] ip_output+0x73/0xaf [ 1741.309028] [] ip_forward_finish+0x66/0x6b [ 1741.314097] [] ip_forward+0x2b0/0x36d [ 1741.318735] [] ip_rcv_finish+0x267/0x29a [ 1741.323628] [] ip_rcv+0x2b4/0x338 [ 1741.327922] [] __netif_receive_skb_core+0x467/0x4b6 [ 1741.333781] [] __netif_receive_skb+0x48/0x59 [ 1741.339034] [] netif_receive_skb_internal+0x59/0x85 [ 1741.344891] [] napi_gro_complete+0x87/0x8c [ 1741.349968] [] dev_gro_receive+0x1d1/0x271 [ 1741.355040] [] napi_gro_receive+0x19/0x6d [ 1741.360033] [] ? text_poke_bp+0xa0/0xa0 [ 1741.364850] [] 0xf8116049 [ 1741.368460] [] net_rx_action+0x56/0x10e [ 1741.373273] [] __do_softirq+0x91/0x175 [ 1741.377998] [] ? __hrtimer_tasklet_trampoline+0x1a/0x1a [ 1741.384203] [] do_softirq_own_stack+0x1d/0x23 [ 1741.389533] [] irq_exit+0x34/0x75 [ 1741.394480] [] do_IRQ+0x92/0xa6 [ 1741.398598] [] common_interrupt+0x2c/0x40 [ 1741.403590] [] ? cpuidle_enter_state+0x37/0x96 [ 1741.409013] [] cpuidle_enter+0xf/0x12 [ 1741.413652] [] cpu_startup_entry+0x135/0x1e1 [ 1741.418905] [] start_secondary+0x1a6/0x1ab [ 1741.423977] ---[ end trace 88c72563cbf4d107 ]--- [ 1741.428715] ------------[ cut here ]------------ [ 1741.433361] WARNING: CPU: 1 PID: 0 at net/sched/sch_hfsc.c:1427 = 0xf9fe74ef() [ 1741.440425] Modules linked in: em_meta cls_basic sch_hfsc sch_cake(O) = xt_ACCOUNT(O) ipt_Rn [ 1741.491884] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W O = 3.16.7-ckt9-voyage #1 [ 1741.499897] Hardware name: PC Engines APU/APU, BIOS 4.0 09/08/2014 [ 1741.506091] 00000000 00000000 f5c99dbc c13167e9 00000000 f5c99dd4 = c102a7dd f9fe74ef [ 1741.514083] f547a400 00000000 00000000 f5c99de4 c102a803 00000009 = 00000000 f5c99e04 [ 1741.522074] f9fe74ef f547a7c8 536e858e 00000006 f547a400 00000000 = 00000040 f5c99e20 [ 1741.530073] Call Trace: [ 1741.532550] [] dump_stack+0x41/0x52 [ 1741.537022] [] warn_slowpath_common+0x5c/0x73 [ 1741.542348] [] ? 0xf9fe74ee [ 1741.546121] [] warn_slowpath_null+0xf/0x13 [ 1741.551187] [] 0xf9fe74ee [ 1741.554785] [] __qdisc_run+0x81/0xf0 [ 1741.559337] [] __dev_queue_xmit+0x23d/0x35f [ 1741.564495] [] dev_queue_xmit+0xa/0xc [ 1741.569137] [] ip_finish_output+0x6be/0x73d [ 1741.574298] [] ip_output+0x73/0xaf [ 1741.578680] [] ip_forward_finish+0x66/0x6b [ 1741.583750] [] ip_forward+0x2b0/0x36d [ 1741.588389] [] ip_rcv_finish+0x267/0x29a [ 1741.593284] [] ip_rcv+0x2b4/0x338 [ 1741.597577] [] __netif_receive_skb_core+0x467/0x4b6 [ 1741.603435] [] __netif_receive_skb+0x48/0x59 [ 1741.608677] [] netif_receive_skb_internal+0x59/0x85 [ 1741.614529] [] napi_gro_receive+0x31/0x6d [ 1741.619520] [] ? text_poke_bp+0xa0/0xa0 [ 1741.624338] [] 0xf8116049 [ 1741.627935] [] net_rx_action+0x56/0x10e [ 1741.632743] [] __do_softirq+0x91/0x175 [ 1741.637468] [] ? __hrtimer_tasklet_trampoline+0x1a/0x1a [ 1741.643664] [] do_softirq_own_stack+0x1d/0x23 [ 1741.648989] [] irq_exit+0x34/0x75 [ 1741.653931] [] do_IRQ+0x92/0xa6 [ 1741.658052] [] common_interrupt+0x2c/0x40 [ 1741.663045] [] ? cpuidle_enter_state+0x37/0x96 [ 1741.668469] [] cpuidle_enter+0xf/0x12 [ 1741.673105] [] cpu_startup_entry+0x135/0x1e1 [ 1741.678351] [] start_secondary+0x1a6/0x1ab [ 1741.683423] ---[ end trace 88c72563cbf4d108 ]---