Received: by 2002:a05:6a10:6744:0:0:0:0 with SMTP id w4csp370812pxu; Tue, 6 Oct 2020 08:21:19 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyn3TW28eQRru89q29h6G7Msdkf/+qCDyUDz46u5l3bCiJ3MkS51Vl+fe5uFh+qBbJWr71j X-Received: by 2002:a05:6402:b91:: with SMTP id cf17mr6039053edb.130.1601997679313; Tue, 06 Oct 2020 08:21:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1601997679; cv=none; d=google.com; s=arc-20160816; b=ddtLGvyaGizRszXvN3ZTE4N5JubPRYKFHd7tx5cUq5dWpi6JENMjVa+OS6WUgUlV39 nW9nMTKfnCIwSWQNde0P/R0UGO38h9if4QfVWj5AGSTDaSIf7VMjDQUbShNplkv2PTkH GX1Y1JDZucjhDz0c6Ppvp3d2ucIombC4D5Uwlddsmn/htKk2DKpbpV+VrIzbWfzvIr+/ q4QpPrW2/3Zjb7ION3khBHWXWrz4R8aFEpY8l28fh7ucWmZdw3wCcBJJmKRELqeuqJMd AaMiuOi1YJmNcwJdz4gjSPQ4q6gpZU7EhSxbey6rGOtngUG7QesC3Zc+3Z9FqpQjSJG5 TLHA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :user-agent:organization:references:in-reply-to:date:cc:to:from :subject:message-id; bh=5EJII3HxProp8Qxu82WcZ9tiNKQF5twCPk20OEb5CPw=; b=0BaIl6rzjeyVFhMmLmV376Ed2LJjezWTEuUOt+QxjySFZ1IS+wWgXYGp9/Z/UPGMSF cgibSJ/VDrx6vvK/8vz6raxrFz9WgJvrqnylYLigl2i0AN4JTisMA6mhhKJjWXq1UBMn ODJ5CaxRuFt/LPPzHpnt4p/1XzHdIRnr1Ca+U+uocWx4A6rr3QucV4bkLk/UTwW6ULgC 6xGva5J3UMRlOP/ljwDYxFx2+e6jLU4XKNPycWQ94Pwc/3EeKaN3DxkuU40gy+FpEvvH TENmMiTOIte1niCiedFNSii7ZgJ6q3rUNEhtHjzfIC/L9z0K3d6pSogsZpL0VaZ5d1Mr 9wlw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id s20si2724684eji.711.2020.10.06.08.20.55; Tue, 06 Oct 2020 08:21:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726299AbgJFPSq (ORCPT + 99 others); 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