From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from webmail.newmedia-net.de (smtps.newmedia-net.de [IPv6:2a05:a1c0:0:de::167]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 1CFF33B29E; Thu, 22 Aug 2019 16:34:02 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=newmedia-net.de; s=mikd; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject; bh=RUgs/seA7s5fJLS7ZyMgJwNAONtdEDALeUojVi4of6M=; b=dixg9XvLjVMQcAcG+LS+8PtHtWP1PJnpLgC0vdxK57pmzemlC8xT2RL7LxJS7sIjqC9Qwp5vDY6rq8GsvgBLHPrWro/EoKSFD9Lmt02mwE58cgg1O+TxPqWKhfb8aU4/fbNcFSgt3T05pCq/o88A7A9+OwZfe6J+Qhy5HLqa2cc=; To: Dave Taht , =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vu?= =?UTF-8?Q?sen?= Cc: Dave Taht , Cake List , Battle of the Mesh Mailing List , Make-Wifi-fast References: <54438C64-C613-438E-9CB9-6C6D0C5EAFA0@gmail.com> <87sgpvflo4.fsf@taht.net> <87wof6rf7t.fsf@toke.dk> <7656FCDE-C590-4B0C-B191-B9FAC928A762@gmail.com> <5eb4c395-c718-2d28-65a7-9762cf8d5bea@newmedia-net.de> <47AD5102-B66F-44A5-AADE-D167ECB94A61@gmx.de> <1d772664-b6cc-a528-9725-96a431032875@newmedia-net.de> <87v9uqea3x.fsf@taht.net> <87tvaap57q.fsf@toke.dk> <5bbd2b81-9846-3a7a-130c-0f59e04fd2d1@newmedia-net.de> <87ftltdter.fsf@taht.net> <87pnkxnjo4.fsf@toke.dk> From: Sebastian Gottschall Message-ID: Date: Thu, 22 Aug 2019 22:32:58 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Received: from [212.111.244.1] (helo=[172.29.0.186]) by webmail.newmedia-net.de with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.72) (envelope-from ) id 1i0tma-0007Yf-K8; Thu, 22 Aug 2019 22:34:08 +0200 X-Mailman-Approved-At: Thu, 22 Aug 2019 16:36:28 -0400 Subject: [Make-wifi-fast] fq_codel_fast crash/lockup X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Aug 2019 20:34:02 -0000 if you mind. running on arm kernel htb+fq_codel_fast INFO: rcu_preempt self-detected stall on CPU         0-...: (1 GPs behind) idle=0ab/140000000000001/0 softirq=2280/2285 fqs=5984          (t=6000 jiffies g=211 c=210 q=565) Task dump for CPU 0: tc              R running      0  1024    890 0x00000002 Backtrace: [<8001b71c>] (dump_backtrace) from [<8001b9c0>] (show_stack+0x18/0x1c)  r7:8051ca40 r6:8050f908 r5:0000037a r4:87a8f400 [<8001b9a8>] (show_stack) from [<8005bad0>] (sched_show_task+0xe0/0xe8) [<8005b9f0>] (sched_show_task) from [<8005cf20>] (dump_cpu_task+0x40/0x44)  r5:00000000 r4:00000000 [<8005cee0>] (dump_cpu_task) from [<80078534>] (rcu_dump_cpu_stacks+0x74/0xac)  r5:00000000 r4:8051ca40 [<800784c0>] (rcu_dump_cpu_stacks) from [<8007ba20>] (rcu_check_callbacks+0x2e8/0x854)  r9:8051ca40 r8:8050e100 r7:068d8000 r6:00000235 r5:8050f9c0 r4:804fed40 [<8007b738>] (rcu_check_callbacks) from [<8007df44>] (update_process_times+0x44/0x6c)  r10:00000000 r9:00000000 r8:00000000 r7:0000001d r6:87a8f400 r5:00000000  r4:ffffe000 [<8007df00>] (update_process_times) from [<80089a08>] (tick_periodic+0xb0/0xb8)  r7:0000001d r6:7fffffff r5:86dd9800 r4:8050e144 [<80089958>] (tick_periodic) from [<80089a44>] (tick_handle_periodic+0x34/0xac)  r5:86dd9800 r4:ffffffff [<80089a10>] (tick_handle_periodic) from [<8001dc04>] (twd_handler+0x38/0x40)  r9:00000000 r8:86dd9800 r7:0000001d r6:87801cc0 r5:805214bc r4:00000001 [<8001dbcc>] (twd_handler) from [<80074c8c>] (handle_percpu_devid_irq+0x7c/0x94)  r5:805214bc r4:805036c0 [<80074c10>] (handle_percpu_devid_irq) from [<80071214>] (__handle_domain_irq+0xb8/0xd8)  r9:00000000 r8:87804800 r7:00000001 r6:804fcfc4 r5:00000000 r4:00000000 [<8007115c>] (__handle_domain_irq) from [<80009388>] (gic_handle_irq+0x50/0x7c)  r9:00000000 r8:b0101100 r7:b0100100 r6:b010010c r5:87147ac8 r4:8050fb20 [<80009338>] (gic_handle_irq) from [<80009ed4>] (__irq_svc+0x54/0x90) Exception stack(0x87147ac8 to 0x87147b10) 7ac0:                   8696e090 00000000 0000001f 00000020 86740000 87147b78 7ae0: 86680094 86680094 87147b78 00000000 00000000 87147b24 87147b28 87147b18 7b00: 7f4cb1ec 80017a28 20000013 ffffffff  r9:00000000 r8:87147b78 r7:87147afc r6:ffffffff r5:20000013 r4:80017a28 [<800179d8>] (_raw_spin_lock_bh) from [<7f4cb1ec>] (fq_codel_dump_stats+0x68/0xd8 [sch_fq_codel_fast]) [<7f4cb184>] (fq_codel_dump_stats [sch_fq_codel_fast]) from [<802786c0>] (tc_fill_qdisc+0x1d0/0x284)  r5:86740000 r4:870e0c00 [<802784f0>] (tc_fill_qdisc) from [<80278a78>] (qdisc_notify.isra.0+0xec/0x138)  r10:86740000 r9:869cb800 r8:870d6308 r7:870d6306 r6:8052b780 r5:00000400  r4:870e0c00 [<8027898c>] (qdisc_notify.isra.0) from [<80278afc>] (notify_and_destroy+0x38/0x50)  r10:8052b780 r9:00000000 r8:80285a50 r7:869cba00 r6:00000000 r5:8696e000  r4:869cb800 [<80278ac4>] (notify_and_destroy) from [<80278da8>] (qdisc_graft+0x294/0x360)  r4:86740000 [<80278b14>] (qdisc_graft) from [<8027a424>] (tc_modify_qdisc+0x4a0/0x4f4)  r10:8052b780 r9:00000000 r8:8696e000 r7:00010100 r6:870e1000 r5:870d6300  r4:86740000 [<80279f84>] (tc_modify_qdisc) from [<802688b0>] (rtnetlink_rcv_msg+0x16c/0x1e4)  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:870d7b00 r5:870d6300  r4:000000f0 [<80268744>] (rtnetlink_rcv_msg) from [<802a37e4>] (netlink_rcv_skb+0x64/0xc8)  r8:00000000 r7:870d7b00 r6:870d6300 r5:80268744 r4:870d7b00 [<802a3780>] (netlink_rcv_skb) from [<8026873c>] (rtnetlink_rcv+0x2c/0x34)  r7:870d7b00 r6:87224000 r5:0000003c r4:870d7b00 [<80268710>] (rtnetlink_rcv) from [<802a3218>] (netlink_unicast+0x158/0x20c)  r5:0000003c r4:878a8400 [<802a30c0>] (netlink_unicast) from [<802a3610>] (netlink_sendmsg+0x344/0x38c)  r8:024000c0 r7:87224000 r6:0000003c r5:870d7b00 r4:87147f4c [<802a32cc>] (netlink_sendmsg) from [<8023f680>] (___sys_sendmsg+0x1e8/0x22c)  r10:87147e28 r9:87147e28 r8:00000000 r7:00000000 r6:8751ae00 r5:00000000  r4:87147f4c [<8023f498>] (___sys_sendmsg) from [<8023fd88>] (__sys_sendmsg+0x44/0x68)  r10:00000000 r9:87146000 r8:80009724 r7:00000128 r6:00000000 r5:7e950ccc  r4:8751ae00 [<8023fd44>] (__sys_sendmsg) from [<8023fdbc>] (SyS_sendmsg+0x10/0x14)  r6:00000000 r5:00000000 r4:00000000 [<8023fdac>] (SyS_sendmsg) from [<80009560>] (ret_fast_syscall+0x0/0x48)