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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89171C433EF for ; Tue, 28 Dec 2021 21:55:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231416AbhL1Vz6 (ORCPT ); Tue, 28 Dec 2021 16:55:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231292AbhL1Vz6 (ORCPT ); Tue, 28 Dec 2021 16:55:58 -0500 Received: from mail.sf-mail.de (mail.sf-mail.de [IPv6:2a01:4f8:1c17:6fae:616d:6c69:616d:6c69]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78BA6C061574 for ; Tue, 28 Dec 2021 13:55:57 -0800 (PST) Received: (qmail 17590 invoked from network); 28 Dec 2021 21:56:15 -0000 Received: from p200300cf07194a002d44b0807b269561.dip0.t-ipconnect.de ([2003:cf:719:4a00:2d44:b080:7b26:9561]:51894 HELO daneel.sf-tec.de) (auth=eike@sf-mail.de) by mail.sf-mail.de (Qsmtpd 0.38dev) with (TLS_AES_256_GCM_SHA384 encrypted) ESMTPSA for ; Tue, 28 Dec 2021 22:56:15 +0100 From: Rolf Eike Beer To: linux-parisc@vger.kernel.org Subject: Re: pagefaults and hang with 5.15.11 Date: Tue, 28 Dec 2021 22:55:47 +0100 Message-ID: <3407744.iIbC2pHGDl@daneel.sf-tec.de> In-Reply-To: <12921974.uLZWGnKmhe@daneel.sf-tec.de> References: <11891682.O9o76ZdvQC@daneel.sf-tec.de> <12921974.uLZWGnKmhe@daneel.sf-tec.de> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart8872545.CDJkKcVGEf"; micalg="pgp-sha1"; protocol="application/pgp-signature" Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org --nextPart8872545.CDJkKcVGEf Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Am Montag, 27. Dezember 2021, 15:30:10 CET schrieb Rolf Eike Beer: > Am Sonntag, 26. Dezember 2021, 18:22:12 CET schrieb John David Anglin: > > On 2021-12-26 11:21 a.m., Rolf Eike Beer wrote: > > > [139181.966881] WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 > > > rcu_eqs_enter.constprop.0+0x8c/0x98 > > > > This is probably not reproducible. You might try this change from Sven > > At least this time the git testsuite has finished, but with some errors as > usual. > > > diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c > > index cf92ece20b75..0cd97fa004c5 100644 > > --- a/arch/parisc/kernel/smp.c > > +++ b/arch/parisc/kernel/smp.c > > @@ -228,11 +228,13 @@ static inline void > > > > send_IPI_allbutself(enum ipi_message_type op) > > { > > > > int i; > > > > - > > + > > + preempt_disable(); > > > > for_each_online_cpu(i) { > > > > if (i != smp_processor_id()) > > > > send_IPI_single(i, op); > > > > } > > > > + preempt_enable(); > > > > } > > > > #ifdef CONFIG_KGDB > > I'll add this and see what happens. The machine locked up again, but without many output: [13093.642353] INEQUIVALENT ALIASES 0x96000 and 0xf5bba000 in file xargs [13094.122900] INEQUIVALENT ALIASES 0x110000 and 0xf5a63000 in file find [13260.968430] INEQUIVALENT ALIASES 0x96000 and 0xf5bba000 in file xargs [16995.351108] ttyS ttyS1:[17649.655079] t[17650.739194] t[17658.174951] t[17659.307044] t[24039.432030] INEQUIVALENT ALIASES 0x113000 and 0xf5a66000 in file find And after reset it got trouble during boot: Configuration setting "allocation/zero_metadata" unknown. [ 76.490814] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [lvm:2612] Luckily it worked on the next attempt. > > and my "[PATCH v3] parisc: Rewrite light-weight syscall and futex code" > > change. Page faults in the LWS code can mess up scheduling. > > But that would be nothing new. At least the machine has been quite stable in > the last time. > > > I haven't found 5.15.11 to be stable. Neither do I. I assume it's some sort of backport, since 5.15.0 has been quite stable: reboot system boot 5.15.11-gentoo-p Sat Dec 25 00:18 still running reboot system boot 5.15.0-gentoo-pa Sun Dec 19 11:46 - 00:13 (5+12:27) reboot system boot 5.15.0-gentoo-pa Thu Nov 25 14:40 - 00:13 (29+09:33) reboot system boot 5.15.0-gentoo-pa Thu Nov 4 10:23 - 14:35 (21+04:11) Eike --nextPart8872545.CDJkKcVGEf Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part. Content-Transfer-Encoding: 7Bit -----BEGIN PGP SIGNATURE----- iF0EABECAB0WIQSaYVDeqwKa3fTXNeNcpIk+abn8TgUCYcuH4wAKCRBcpIk+abn8 ThZLAKCAFTyIyWQVgFurc0IzzGi7SyOR0wCfYCZ6yYHWqvQ/+fipI7Yl6Q73hfw= =n8Ah -----END PGP SIGNATURE----- --nextPart8872545.CDJkKcVGEf--