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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 708AAC636C8 for ; Sun, 18 Jul 2021 21:03:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 07FE761179 for ; Sun, 18 Jul 2021 21:03:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 07FE761179 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=natalenko.name Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5416B6B00F2; Sun, 18 Jul 2021 17:03:58 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 518996B00F3; Sun, 18 Jul 2021 17:03:58 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3E15D6B00F4; Sun, 18 Jul 2021 17:03:58 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0133.hostedemail.com [216.40.44.133]) by kanga.kvack.org (Postfix) with ESMTP id 185556B00F2 for ; Sun, 18 Jul 2021 17:03:58 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 7FD431F21B for ; Sun, 18 Jul 2021 21:03:56 +0000 (UTC) X-FDA: 78376935672.16.5B34C36 Received: from vulcan.natalenko.name (vulcan.natalenko.name [104.207.131.136]) by imf01.hostedemail.com (Postfix) with ESMTP id 45E065010FC0 for ; Sun, 18 Jul 2021 21:03:55 +0000 (UTC) Received: from spock.localnet (unknown [151.237.229.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by vulcan.natalenko.name (Postfix) with ESMTPSA id A0E67B3DDCA; Sun, 18 Jul 2021 23:03:53 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=natalenko.name; s=dkim-20170712; t=1626642233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3YxVoLczERTUjugGi6wK+E4gG/09EfnBSgLqn9WMb98=; b=Aiu27/VlrN8YToAjQ6uuksEVNriJJ2eFy6sBUD+S57Q+xiLltfeERcmGwu9IXpq7nwTdoi AqmMmFU5szOP+/s115EwfADw+sWwQI1pi5TMPzq9NKXJg7Ztld9RH+X8lhw87i58iLWu7H xRD4/41XkdE0hoVLoVy+eOFZhs2i0mY= From: Oleksandr Natalenko To: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org, Chris Clayton , Chris Rankin , "Paul E. McKenney" , Josh Triplett , Steven Rostedt , Mathieu Desnoyers , Lai Jiangshan , Joel Fernandes , rcu@vger.kernel.org, Andrew Morton , linux-mm@kvack.org Subject: Re: linux-5.13.2: warning from kernel/rcu/tree_plugin.h:359 Date: Sun, 18 Jul 2021 23:03:51 +0200 Message-ID: <6698965.kvI7vG0SvZ@natalenko.name> In-Reply-To: <2245518.LNIG0phfVR@natalenko.name> References: <2245518.LNIG0phfVR@natalenko.name> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=natalenko.name header.s=dkim-20170712 header.b="Aiu27/Vl"; spf=pass (imf01.hostedemail.com: domain of oleksandr@natalenko.name designates 104.207.131.136 as permitted sender) smtp.mailfrom=oleksandr@natalenko.name; dmarc=pass (policy=reject) header.from=natalenko.name X-Rspamd-Server: rspam02 X-Stat-Signature: gupbu673pt53zzwx1by41xcuwroas3u1 X-Rspamd-Queue-Id: 45E065010FC0 X-HE-Tag: 1626642235-318175 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: + stable@vger.kernel.org On ned=C4=9Ble 18. =C4=8Dervence 2021 23:01:24 CEST Oleksandr Natalenko wro= te: > Hello. >=20 > On sobota 17. =C4=8Dervence 2021 22:22:08 CEST Chris Clayton wrote: > > I checked the output from dmesg yesterday and found the following warni= ng: > >=20 > > [Fri Jul 16 09:15:29 2021] ------------[ cut here ]------------ > > [Fri Jul 16 09:15:29 2021] WARNING: CPU: 11 PID: 2701 at > > kernel/rcu/tree_plugin.h:359 rcu_note_context_switch+0x37/0x3d0 [Fri Jul > > 16 > > 09:15:29 2021] Modules linked in: uas hidp rfcomm bnep xt_MASQUERADE > > iptable_nat nf_nat xt_LOG nf_log_syslog xt_limit xt_multiport xt_conntr= ack > > iptable_filter btusb btintel wmi_bmof uvcvideo videobuf2_vmalloc > > videobuf2_memops videobuf2_v4l2 videobuf2_common coretemp hwmon > > snd_hda_codec_hdmi x86_pkg_temp_thermal snd_hda_codec_realtek > > snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg > > snd_hda_codec snd_hwdep snd_hda_core i2c_i801 i2c_smbus iwlmvm mac80211 > > iwlwifi i915 mei_me mei cfg80211 intel_lpss_pci intel_lpss wmi > > nf_conntrack_ftp xt_helper nf_conntrack nf_defrag_ipv4 tun > > [Fri Jul 16 09:15:29 2021] CPU: 11 PID: 2701 Comm: lpqd Not tainted 5.1= 3.2 > > #1 [Fri Jul 16 09:15:29 2021] Hardware name: Notebook > >=20 > > NP50DE_DB /NP50DE_DB , BIOS 1.07.04 02/17/2020 > >=20 > > [Fri Jul 16 09:15:29 2021] RIP: 0010:rcu_note_context_switch+0x37/0x3d0 > > [Fri Jul 16 09:15:29 2021] Code: 02 00 e8 ec a0 6c 00 89 c0 65 4c 8b 2c= 25 > > 00 6d 01 00 48 03 1c c5 80 56 e1 b6 40 84 ed 75 0d 41 8b 95 04 03 00 00= 85 > > d2 7e 02 <0f> 0b 65 48 8b 04 25 00 6d 01 00 8b 80 04 03 00 00 85 c0 7e = 0a > > 41 [Fri Jul 16 09:15:29 2021] RSP: 0000:ffffb5d483837c70 EFLAGS: 000100= 02 > > [Fri Jul 16 09:15:29 2021] RAX: 000000000000000b RBX: ffff9b77806e1d80 > > RCX: > > 0000000000000100 [Fri Jul 16 09:15:29 2021] RDX: 0000000000000001 RSI: > > ffffffffb6d82ead RDI: ffffffffb6da5e4e [Fri Jul 16 09:15:29 2021] RBP: > > 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [Fri Jul 16 > > 09:15:29 2021] R10: 000000067bce4fff R11: 0000000000000000 R12: > > ffff9b77806e1100 [Fri Jul 16 09:15:29 2021] R13: ffff9b734a833a00 R14: > > ffff9b734a833a00 R15: 0000000000000000 [Fri Jul 16 09:15:29 2021] FS: > > 00007fccbfc5fe40(0000) GS:ffff9b77806c0000(0000) knlGS:0000000000000000 > > [Fri Jul 16 09:15:29 2021] CS: 0010 DS: 0000 ES: 0000 CR0: > > 0000000080050033 [Fri Jul 16 09:15:29 2021] CR2: 00007fccc2db7290 CR3: > > 00000003fb0b8002 CR4: 00000000007706e0 [Fri Jul 16 09:15:29 2021] PKRU: > > 55555554 > > [Fri Jul 16 09:15:29 2021] Call Trace: > > [Fri Jul 16 09:15:29 2021] __schedule+0x86/0x810 > > [Fri Jul 16 09:15:29 2021] schedule+0x40/0xe0 > > [Fri Jul 16 09:15:29 2021] io_schedule+0x3d/0x60 > > [Fri Jul 16 09:15:29 2021] wait_on_page_bit_common+0x129/0x390 > > [Fri Jul 16 09:15:29 2021] ? __filemap_set_wb_err+0x10/0x10 > > [Fri Jul 16 09:15:29 2021] __lock_page_or_retry+0x13f/0x1d0 > > [Fri Jul 16 09:15:29 2021] do_swap_page+0x335/0x5b0 > > [Fri Jul 16 09:15:29 2021] __handle_mm_fault+0x444/0xb20 > > [Fri Jul 16 09:15:29 2021] handle_mm_fault+0x5c/0x170 > > [Fri Jul 16 09:15:29 2021] ? find_vma+0x5b/0x70 > > [Fri Jul 16 09:15:29 2021] exc_page_fault+0x1ab/0x610 > > [Fri Jul 16 09:15:29 2021] ? fpregs_assert_state_consistent+0x19/0x40 > > [Fri Jul 16 09:15:29 2021] ? asm_exc_page_fault+0x8/0x30 > > [Fri Jul 16 09:15:29 2021] asm_exc_page_fault+0x1e/0x30 > > [Fri Jul 16 09:15:29 2021] RIP: 0033:0x7fccc2d3c520 > > [Fri Jul 16 09:15:29 2021] Code: 68 4c 00 00 00 e9 20 fb ff ff ff 25 7a= ad > > 07 00 68 4d 00 00 00 e9 10 fb ff ff ff 25 72 ad 07 00 68 4e 00 00 00 e9= 00 > > fb ff ff 25 6a ad 07 00 68 4f 00 00 00 e9 f0 fa ff ff ff 25 62 ad = 07 > > 00 [Fri Jul 16 09:15:29 2021] RSP: 002b:00007ffebd529048 EFLAGS: 000102= 93 > > [Fri Jul 16 09:15:29 2021] RAX: 0000000000000001 RBX: 00007fccc46e2890 > > RCX: > > 0000000000000010 [Fri Jul 16 09:15:29 2021] RDX: 0000000000000010 RSI: > > 0000000000000000 RDI: 00007fccc46e2890 [Fri Jul 16 09:15:29 2021] RBP: > > 000056264f1dd4a0 R08: 000056264f21aba0 R09: 000056264f1f58a0 [Fri Jul 16 > > 09:15:29 2021] R10: 0000000000000007 R11: 0000000000000246 R12: > > 000056264f21ac00 [Fri Jul 16 09:15:29 2021] R13: 000056264f1e0a30 R14: > > 00007ffebd529080 R15: 00000000000dd87b [Fri Jul 16 09:15:29 2021] ---[ = end > > trace c8b06e067d8b0fc2 ]--- > >=20 > > At the time the warning was issued I was creating a (weekly) backup of = my > > linux system (home-brewed based on the guidance from Linux From Scratch= ). > > My backup routine is completed by copying the archive files (created wi= th > > dar) and a directory that contains about 7000 source and binary rpm fil= es > > to an external USB drive. I didn't spot the warning until later in the > > day, > > so I'm not sure exactly where I was in my backup process. > >=20 > > I haven't seen this warning before. Consequently, I don;t know how easy > > (or > > otherwise) it is to reproduce. > >=20 > > Let me know if I can provide any additional diagnostics, but please cc = me > > as I'm not subscribed. >=20 > Confirming the same for me with v5.13.2, and cross-referencing another > report [1] against v5.12.17. >=20 > Also Cc'ing relevant people on this. >=20 > Thanks. >=20 > [1] > https://lore.kernel.org/lkml/CAK2bqVK0Q9YcpakE7_Rc6nr-E4e2GnMOgi5jJj=3D_E= h_1k > EHLHA@mail.gmail.com/ =2D-=20 Oleksandr Natalenko (post-factum)