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=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 A626FC56201 for ; Tue, 10 Nov 2020 07:41:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A8B621D46 for ; Tue, 10 Nov 2020 07:41:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="lDUDdRM2" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727991AbgKJHla (ORCPT ); Tue, 10 Nov 2020 02:41:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727711AbgKJHl3 (ORCPT ); Tue, 10 Nov 2020 02:41:29 -0500 Received: from mail-ej1-x633.google.com (mail-ej1-x633.google.com [IPv6:2a00:1450:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C35EDC0613CF for ; Mon, 9 Nov 2020 23:41:27 -0800 (PST) Received: by mail-ej1-x633.google.com with SMTP id 7so16068980ejm.0 for ; Mon, 09 Nov 2020 23:41:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:from:date:message-id:subject:to:cc; bh=+A/E+HuPe8v8u2I+5nMtlhsi5h/+K+qNfUiEOaq1bTk=; b=lDUDdRM2q5FQtDdjFccn5estlbFnIjXGztAxp+jUmqZa2wyTCM+MxKYmy83RbFkNSI l4jLQOBUtEmB9/vxYHCCw6AtfbBtdxCsCLLqTOAJQwK3Flh98dbXcEKr31AY7MnB3ucB PQhB1cx9fOCKIwh+dAczhL0neA/e+5Jvy9AoZs4fu/W6smABo6ikUT1ARllmOAIAT7BL rhZ2UnAW+072TKVdoUaQGDRSVzFf3DzA1mRkcZifvaIPcvaCEG0W45flQ5SlizD3RcdE k3lTIjLNSCYlA90teJA0xkLL+LIcs2Y1N2vWFN5STW5/rgAN6eQkogiupdBxeKmLZoh5 2MHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=+A/E+HuPe8v8u2I+5nMtlhsi5h/+K+qNfUiEOaq1bTk=; b=AKfnFe5zKqalo+gZcoMyjoPI7ll48IvoUQJt7ktqwz4wwXTRofTD0y/vLYspPKE8YF HTE39d+14szLJM79djDlAe2/3zlfHJQQ/BmsxYxMkm7CdCiHQ5e7kWDpckTThYFOJo45 0Jz4TCUxMcGVWX5lO/bUkJbMLraqjUF24+aNXgD/uox26nfd9Ptepb9seuqtsLqji6bd V1xJ4vaaAnc00ZkgTlCOvsyuhvxSKRDroc62nIicKYM6UP66iT01OVs0bIpYD1vLIVnf DpHsNr681GwwwYebUFZqyM2G/QgfSFe9NQksAlTAc2rMJHHGXpOrWoEhGMrksz29TEjB MHsw== X-Gm-Message-State: AOAM533PlY/KC+IJkDEYhVmrdFC7Esq6upPl7o7Ad8OmsjBEC56fpxjW REeS2Pf3H9dOX8b8+CtbD8Dcx8+u0cjAx3f/kbKID89QYeDGNlBH X-Google-Smtp-Source: ABdhPJxDLllAmYwP42N/vmNhFsCbl5VuuE4DFUVNZoDQxhQLzlWKKq7QZr79p5EoITlaqKYN144sMUbYsl13mDoI+rk= X-Received: by 2002:a17:906:4742:: with SMTP id j2mr18476362ejs.247.1604994086125; Mon, 09 Nov 2020 23:41:26 -0800 (PST) MIME-Version: 1.0 From: Naresh Kamboju Date: Tue, 10 Nov 2020 13:11:14 +0530 Message-ID: Subject: WARNING: CPU: 2 at kernel/workqueue.c:4762 workqueue_online_cpu To: open list , lkft-triage@lists.linaro.org, linux- stable , Linux PM Cc: Greg Kroah-Hartman , Sasha Levin , Tejun Heo , jiangshanlai@gmail.com, Viresh Kumar , Stephan Gerhold , Thomas Gleixner , Peter Zijlstra Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org While running CPU hotplug testing on arm64 db410c device the following kernel warning noticed on linux stable-rc 4.19 branch. I did not bisect this problem yet. Kernel Warning log: ------------------------------ [ 290.463053] CPU1: shutdown [ 290.463107] psci: CPU1 killed (polled 0 ms) [ 290.527026] CPU2: shutdown [ 290.527072] psci: CPU2 killed (polled 0 ms) [ 290.579064] CPU3: shutdown [ 290.579098] psci: CPU3 killed (polled 0 ms) [ 290.612295] Detected VIPT I-cache on CPU1 [ 290.612361] CPU1: Booted secondary processor 0x0000000001 [0x410fd030] [ 290.684091] Detected VIPT I-cache on CPU2 [ 290.684158] CPU2: Booted secondary processor 0x0000000002 [0x410fd030] [ 290.684464] WARNING: CPU: 2 PID: 20 at /usr/src/kernel/kernel/workqueue.c:4762 workqueue_online_cpu+0x18c/0x428 [ 290.697731] Modules linked in: sch_ingress algif_hash test_bpf snd_soc_hdmi_codec crc32_ce adv7511 cec rfkill msm snd_soc_msm8916_analog snd_soc_lpass_apq8016 mdt_loader snd_soc_lpass_cpu snd_soc_msm8916_digital snd_soc_apq8016_sbc drm_kms_helper snd_soc_lpass_platform drm drm_panel_orientation_quirks fuse [last unloaded: test_bpf] [ 290.714992] CPU: 2 PID: 20 Comm: cpuhp/2 Tainted: G D 4.19.156-rc1 #1 [ 290.737221] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [ 290.745033] pstate: 40000005 (nZcv daif -PAN -UAO) [ 290.751718] pc : workqueue_online_cpu+0x18c/0x428 [ 290.756316] lr : workqueue_online_cpu+0x140/0x428 [ 290.761086] sp : ffff00000a90bc90 [ 290.765774] x29: ffff00000a90bc90 x28: ffff00000989bfc8 [ 290.769074] x27: ffff80003ac81a00 x26: ffff000009914a00 [ 290.774456] x25: ffff00000989c068 x24: ffff00000a90bd24 [ 290.779752] x23: 0000000000000002 x22: ffff80003fe7a4d0 [ 290.785047] x21: ffff000009914000 x20: ffff00000989bf68 [ 290.790341] x19: ffff80003fe7a1c0 x18: ffffffffffffffff [ 290.795636] x17: 0000000000000000 x16: 0000000000000000 [ 290.800932] x15: ffff00000987fa48 x14: ffff00000a69c530 [ 290.806227] x13: 0000000000000040 x12: 0000000000000228 [ 290.811522] x11: 0000000000000000 x10: ffff00000987fa48 [ 290.816816] x9 : ffff000009914000 x8 : ffff00000987fa48 [ 290.822112] x7 : ffff00000812d338 x6 : 0000000000000000 [ 290.827407] x5 : 0000000000000000 x4 : ffff80003c59ad00 [ 290.832702] x3 : ffff000009880000 x2 : 8b427f82388e4a00 [ 290.837997] x1 : 0000000000000000 x0 : 00000000ffffffea [ 290.843293] Call trace: [ 290.848588] workqueue_online_cpu+0x18c/0x428 [ 290.850762] cpuhp_invoke_callback+0xe8/0xd18 [ 290.855274] cpuhp_thread_fun+0x1a8/0x250 [ 290.859613] smpboot_thread_fn+0x1c4/0x2d0 [ 290.863606] kthread+0x150/0x168 [ 290.867600] ret_from_fork+0x10/0x1c [ 290.870983] irq event stamp: 158 [ 290.874546] hardirqs last enabled at (157): [] _raw_spin_unlock_irqrestore+0x74/0xb0 [ 290.877765] hardirqs last disabled at (158): [] __schedule+0xc0/0xbc0 [ 290.886878] softirqs last enabled at (0): [] copy_process.isra.5.part.6+0x490/0x1b20 [ 290.894861] softirqs last disabled at (0): [<0000000000000000>] (null) [ 290.904233] ---[ end trace 7a9cb6558129244f ]--- steps to reproduce: ---------------------------------- Total number of CPU[0-3] offline each CPU 1, 2 and 3 online each CPU 1, 2 and 3 echo 0 > /sys/devices/system/cpu/cpu1/online echo 0 > /sys/devices/system/cpu/cpu2/online echo 0 > /sys/devices/system/cpu/cpu3/online echo 1 > /sys/devices/system/cpu/cpu1/online echo 1 > /sys/devices/system/cpu/cpu2/online echo 1 > /sys/devices/system/cpu/cpu3/online Reported-by: Naresh Kamboju metadata: git branch: linux-4.19.y git repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git describe: v4.19.155-72-g4d10cdd4ac50 kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/dragonboard-410c/lkft/linux-stable-rc-4.19/666/config ref: https://lkft.validation.linaro.org/scheduler/job/1927553#L3876 https://qa-reports.linaro.org/lkft/linux-stable-rc-linux-4.19.y/build/v4.19.155-72-g4d10cdd4ac50/testrun/3416766/suite/linux-log-parser/test/check-kernel-warning-1925672/log -- Linaro LKFT https://lkft.linaro.org