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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 3072FC4727D for ; Tue, 6 Oct 2020 15:18:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EF000206DD for ; Tue, 6 Oct 2020 15:18:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726335AbgJFPSq (ORCPT ); Tue, 6 Oct 2020 11:18:46 -0400 Received: from imap2.colo.codethink.co.uk ([78.40.148.184]:59606 "EHLO imap2.colo.codethink.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725902AbgJFPSn (ORCPT ); Tue, 6 Oct 2020 11:18:43 -0400 X-Greylist: delayed 1758 seconds by postgrey-1.27 at vger.kernel.org; Tue, 06 Oct 2020 11:18:43 EDT Received: from shadbolt.e.decadent.org.uk ([88.96.1.126] helo=xylophone) by imap2.colo.codethink.co.uk with esmtpsa (Exim 4.92 #3 (Debian)) id 1kPoHH-0004bn-TJ; Tue, 06 Oct 2020 15:49:19 +0100 Message-ID: <9f395cf46fc5edef55ac1d053d0203c5d39a44cf.camel@codethink.co.uk> Subject: Re: [PATCH 5.4 00/57] 5.4.70-rc1 review From: Ben Hutchings To: Naresh Kamboju , Greg Kroah-Hartman Cc: open list , Shuah Khan , patches@kernelci.org, lkft-triage@lists.linaro.org, linux- stable , pavel@denx.de, Andrew Morton , Linus Torvalds , Guenter Roeck , Arnd Bergmann Date: Tue, 06 Oct 2020 15:49:19 +0100 In-Reply-To: References: <20201005142109.796046410@linuxfoundation.org> Organization: Codethink Ltd. Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.30.5-1.1 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2020-10-06 at 13:55 +0530, Naresh Kamboju wrote: [...] > NOTE: > While running LTP containers test suite, > I noticed this kernel panic on arm64 Juno-r2 devices. > Not easily reproducible and not seen on any other arm64 devices. > > steps to reproduce: > --------------------------- > # boot stable rc 5.4.70 kernel on juno-r2 machine > # cd /opt/ltp > # ./runltp -f containers > > Crash log, > --------------- > pidns13 0 TINFO : cinit2: writing some data in pipe > pidns13 0 TINFO : cinit1: setup handler for async I/O on pipe > pidns13 1 TPASS : cinit1: si_fd is 6, si_code is 1 > [ 122.275627] Internal error: synchronous external abort: 96000210 > [#1] PREEMPT SMP [...] > [ 122.399545] Call trace: > [ 122.401995] sil24_interrupt+0x28/0x5f0 [...] > [ 122.467321] Code: d503201f f9400ac0 f9400014 91011294 (b9400294) [...] This corresponds to the statement: status = readl(host_base + HOST_IRQ_STAT); So it looks like the PCI device stopped responding to MMIO for some reason. It could be faulty hardware. I don't see any sign of run-time power management in that driver that might explain it. Ben. -- Ben Hutchings, Software Developer Codethink Ltd https://www.codethink.co.uk/ Dale House, 35 Dale Street Manchester, M1 2HF, United Kingdom