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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_GIT 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 4738AC4361B for ; Sat, 19 Dec 2020 15:05:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0FA38233FC for ; Sat, 19 Dec 2020 15:05:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726799AbgLSPEz (ORCPT ); Sat, 19 Dec 2020 10:04:55 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:46315 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726578AbgLSPEy (ORCPT ); Sat, 19 Dec 2020 10:04:54 -0500 X-UUID: 6534e6a8078f4023a85528671528bead-20201219 X-UUID: 6534e6a8078f4023a85528671528bead-20201219 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw02.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 955308409; Sat, 19 Dec 2020 23:04:08 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs08n1.mediatek.inc (172.21.101.55) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sat, 19 Dec 2020 23:04:05 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 19 Dec 2020 23:04:04 +0800 From: Lecopzer Chen To: CC: , , , , , , , , , , Subject: Re: [PATCH] kernel/watchdog_hld.c: Fix access percpu in preemptible context Date: Sat, 19 Dec 2020 23:04:06 +0800 Message-ID: <20201219150406.16925-1-lecopzer.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20201219135917.GA26344@xsang-OptiPlex-9020> References: <20201219135917.GA26344@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Thanks a lot, I'll try to fix this in anthoer way(patch v2) to avoid regreesion other than arm64 BRs, Lecopzer > Greeting, > > FYI, we noticed the following commit (built with gcc-9): > > commit: 6e37d53a67753bcb12a0b9102cac85d98f8a0453 ("[PATCH] kernel/watchdog_hld.c: Fix access percpu in preemptible context") > url: https://github.com/0day-ci/linux/commits/Lecopzer-Chen/kernel-watchdog_hld-c-Fix-access-percpu-in-preemptible-context/20201217-211549 > base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git accefff5b547a9a1d959c7e76ad539bf2480e78b > > in testcase: boot > > on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): > > If you fix the issue, kindly add following tag > Reported-by: kernel test robot >