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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 6C1B8C433DB for ; Tue, 22 Dec 2020 01:35:44 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 829B822B3B for ; Tue, 22 Dec 2020 01:35:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 829B822B3B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=internode.on.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8DA646B005D; Mon, 21 Dec 2020 20:35:42 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 88BAA6B0085; Mon, 21 Dec 2020 20:35:42 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7536D6B0087; Mon, 21 Dec 2020 20:35:42 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0200.hostedemail.com [216.40.44.200]) by kanga.kvack.org (Postfix) with ESMTP id 50A726B005D for ; Mon, 21 Dec 2020 20:35:42 -0500 (EST) Received: from smtpin11.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 1C8D13642 for ; Tue, 22 Dec 2020 01:35:42 +0000 (UTC) X-FDA: 77619201324.11.loss97_4d17d782745c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin11.hostedemail.com (Postfix) with ESMTP id E2600180F8B87 for ; Tue, 22 Dec 2020 01:35:41 +0000 (UTC) X-HE-Tag: loss97_4d17d782745c X-Filterd-Recvd-Size: 6436 Received: from ipmail03.adl6.internode.on.net (ipmail03.adl6.internode.on.net [150.101.137.143]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Tue, 22 Dec 2020 01:35:40 +0000 (UTC) X-SMTP-MATCH: 1 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: =?us-ascii?q?A2BzSQAsTOFfAMTFfAFiGwEBAQE8AQE?= =?us-ascii?q?BAwMBAQECAQEBBQEBARUHgUqBPAIBATOBK1iFIYkEjEqYDQsBNgcDBAEBSYN?= =?us-ascii?q?+AQICgXYmOBMCEAEBBgEBAQEBBgQQATiGCYYABiNCJAgBDw0CJgICV4M/AYM?= =?us-ascii?q?GD5NbmxJ2gTIahCUBgRiDW4E8BoEOKAIBAQEBjSU1gU0/gTgMAw2DFIJdAoE?= =?us-ascii?q?9AQGDNzSCLASDE1cQV5FmimSdFSwHgneBFwQLh36SKx+DJoophUUDikmEZi2?= =?us-ascii?q?RGI1TmDWBejMaLm8Bgj9PjlMXg06Kay4+LAIGAQkBAQMJdBoLihYBAQ?= Received: from unknown (HELO [100.68.110.198]) ([1.124.197.196]) by ipmail03.adl6.internode.on.net with ESMTP; 22 Dec 2020 12:05:39 +1030 Date: Tue, 22 Dec 2020 12:05:34 +1030 User-Agent: K-9 Mail for Android In-Reply-To: <9902a12387ac00e4c8a5a74736104c58941f40ba@webmail.internode.on.net> References: <9902a12387ac00e4c8a5a74736104c58941f40ba@webmail.internode.on.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: rcu: INFO: rcu_sched self-detected stall on CPU To: linux-mm@kvack.org From: Arthur Marsh Message-ID: <143FBD2C-2AAB-4221-9D1D-F8A30719B456@internode.on.net> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, still getting kswapd going to 100 percent CPU load on current Linus git= head when loading Firefox with enough tabs to exhaust physical memory=2E Tried bisecting but results were inconclusive, last reproducable good kern= el was after: https://github=2Ecom/torvalds/linux/commit/3644e2d2dda78e21edd8f5415b6d7ab= 03f5f54f3 mm/filemap: fix infinite loop in generic_file_buffered_read() With current Linus git head 22nd December 2020 1:35 UTC: 202012221117-dmesg=2Elog:[ 1765=2E483421] rcu: INFO: rcu_sched self-detect= ed stall on CPU 202012221117-dmesglog:[ 1765=2E483425] rcu:=C2=A00-=2E=2E=2E=2E: (5249 tic= ks this GP) idle=3D6fa/1/0x4000000000000000 softirq=3D43076/43076 fqs=3D259= 0=C2=A0 202012221117-dmesg=2Elog:[ 1765=2E483431]=C2=A0(t=3D5250 jiffies g=3D79277= q=3D13726) 202012221117-dmesg=2Elog:[ 1765=2E483434] NMI backtrace for cpu 0 202012221117-dmesg=2Elog:[ 1765=2E483436] CPU: 0 PID: 69 Comm: kswapd0 Tai= nted: G=C2=A0 =C2=A0 =C2=A0 =C2=A0 W=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A05=2E1= 0=2E0+ #4215 202012221117-dmesg=2Elog:[ 1765=2E483438] Hardware name: System manufactur= er System Product Name/M3A78 PRO, BIOS 1701=C2=A0 =C2=A0 01/27/2011 202012221117-dmesg=2Elog:[ 1765=2E483440] Call Trace: 202012221117-dmesg=2Elog:[ 1765=2E483442]=C2=A0 202012221117-dmesg=2Elog:[ 1765=2E483443]=C2=A0 dump_stack+0x57/0x6a 202012221117-dmesg=2Elog:[ 1765=2E483447]=C2=A0 nmi_cpu_backtrace=2Ecold+0= x32/0x69 202012221117-dmesg=2Elog:[ 1765=2E483450]=C2=A0 ? lapic_can_unplug_cpu+0xa= 0/0xa0 202012221117-dmesg=2Elog:[ 1765=2E483459]=C2=A0 nmi_trigger_cpumask_backtr= ace+0x80/0xa0 202012221117-dmesg=2Elog:[ 1765=2E483463]=C2=A0 rcu_dump_cpu_stacks+0x9a/0= xc8 202012221117-dmesg=2Elog:[ 1765=2E483466]=C2=A0 rcu_sched_clock_irq=2Ecold= +0x202/0x3bb 202012221117-dmesg=2Elog:[ 1765=2E483469]=C2=A0 update_process_times+0x8c/= 0xc0 202012221117-dmesg=2Elog:[ 1765=2E483474]=C2=A0 tick_sched_handle+0x21/0x7= 0 202012221117-dmesg=2Elog:[ 1765=2E483479]=C2=A0 tick_sched_timer+0x94/0xb0 202012221117-dmesg=2Elog:[ 1765=2E483482]=C2=A0 ? tick_nohz_handler+0xe0/0= xe0 202012221117-dmesg=2Elog:[ 1765=2E483485]=C2=A0 __hrtimer_run_queues+0x115= /0x250 202012221117-dmesg=2Elog:[ 1765=2E483488]=C2=A0 hrtimer_interrupt+0x10d/0x= 290 202012221117-dmesg=2Elog:[ 1765=2E483492]=C2=A0 __sysvec_apic_timer_interr= upt+0x5f/0xd0 202012221117-dmesg=2Elog:[ 1765=2E483495]=C2=A0 asm_call_irq_on_stack+0x12= /0x20 202012221117-dmesg=2Elog:[ 1765=2E483500]=C2=A0 202012221117-dmesg=2Elog:[ 1765=2E483501]=C2=A0 sysvec_apic_timer_interrup= t+0x69/0x80 202012221117-dmesg=2Elog:[ 1765=2E483504]=C2=A0 asm_sysvec_apic_timer_inte= rrupt+0x12/0x20 202012221117-dmesg=2Elog:[ 1765=2E483507] RIP: 0010:ttm_pool_type_take+0xe= /0xb0 [ttm] 202012221117-dmesg=2Elog:[ 1765=2E483515] Code: 0f 1f 40 00 5b 31 c0 5d 41= 5c 41 5d c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1f 44 00 00 48= 83 ec 20 4c 89 64 24 10 <4c> 8d 67 20 48 89 1c 24 48 89 6c 24 08 48 89 fb = 4c 89 6c 24 18 4c 202012221117-dmesg=2Elog:[ 1765=2E483517] RSP: 0018:ffffb12840197bf8 EFLAG= S: 00000282 202012221117-dmesg=2Elog:[ 1765=2E483520] RAX: 0000000000000000 RBX: fffff= fffc0bf8e00 RCX: 0000000000000027 202012221117-dmesg=2Elog:[ 1765=2E483522] RDX: 0000000000000001 RSI: fffff= fffc0bf9080 RDI: ffffffffc0bf8df0 202012221117-dmesg=2Elog:[ 1765=2E483524] RBP: 0000000000000080 R08: fffff= fffc0bf8ba0 R09: ffffffffc0bf8ba0 202012221117-dmesg=2Elog:[ 1765=2E483525] R10: ffffffff99ab6280 R11: fffff= fff99a4b440 R12: 0000000000000000 202012221117-dmesg=2Elog:[ 1765=2E483527] R13: 0000000000000000 R14: 00000= 00000000084 R15: ffffffffc0bf8b60 202012221117-dmesg=2Elog:[ 1765=2E483531]=C2=A0 ? ttm_pool_type_take+0x2b/= 0xb0 [ttm] 202012221117-dmesg=2Elog:[ 1765=2E483537]=C2=A0 ttm_pool_shrink+0x28/0xb0 = [ttm] 202012221117-dmesg=2Elog:[ 1765=2E483544]=C2=A0 ttm_pool_shrinker_scan+0xa= /0x20 [ttm] 202012221117-dmesg=2Elog:[ 1765=2E483550]=C2=A0 do_shrink_slab+0x144/0x240 202012221117-dmesglog:[ 1765=2E483554]=C2=A0 shrink_slab+0x9c/0x270 202012221117-dmesg=2Elog:[ 1765=2E483557]=C2=A0 shrink_node+0x2d8/0x6e0 202012221117-dmesg=2Elog:[ 1765=2E483560]=C2=A0 balance_pgdat+0x2d8/0x5d0 202012221117-dmesg=2Elog:[ 1765=2E483563]=C2=A0 kswapd+0x1c5/0x340 202012221117-dmesg=2Elog:[ 1765=2E483565]=C2=A0 ? finish_wait+0xb0/0xb0 202012221117-dmesg=2Elog:[ 1765=2E483568]=C2=A0 ? balance_pgdat+0x5d0/0x5d= 0 202012221117-dmesg=2Elog:[ 1765=2E483570]=C2=A0 kthread+0x126/0x150 202012221117-dmesg=2Elog:[ 1765=2E483572]=C2=A0 ? kthread_associate_blkcg+= 0xc0/0xc0 202012221117-dmesg=2Elog:[ 1765=2E483575]=C2=A0 ret_from_fork+0x22/0x30 End=2E=20 AMD Athlon II X4 640, gcc 11, can supply config and build information if a= nyone wants it=2E=20 Arthur=2E=20 --=20 Sent from my Android device with K-9 Mail=2E Please excuse my brevity=2E