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[23.128.96.19]) by mx.google.com with ESMTPS id lw9-20020a17090b180900b001e675c62e3fsi5069360pjb.71.2022.06.05.20.46.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 05 Jun 2022 20:46:14 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=HSYW+fgP; spf=softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E5CBD5A5AB; Sun, 5 Jun 2022 20:40:03 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243154AbiFCJp3 (ORCPT + 99 others); Fri, 3 Jun 2022 05:45:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39052 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243209AbiFCJpK (ORCPT ); Fri, 3 Jun 2022 05:45:10 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6445F3A712 for ; Fri, 3 Jun 2022 02:45:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1654249508; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type; bh=rsKQEbWsef0bo2M/j5MGFrCZlYTFc+y8nkNtaE/+Xtw=; b=HSYW+fgPgMzWaF33CWzRvGuRkPmgz5hSX+VK2/j8vhkYsn6lX6T9bbgrwlPgdEDmHfoI6y 1tLcVTe76D0s9/62yzIDuqAP0ThivYI2gG5JAeVEPm8ViNSXDxkvvyHYPMjPE/6J8LMM8F BufYrXV0etb3YzQe5lDNXSg+nPUM4zE= Received: from mail-lf1-f71.google.com (mail-lf1-f71.google.com [209.85.167.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-516--f3xx-1YM3CGRoBgkhSAtA-1; Fri, 03 Jun 2022 05:45:07 -0400 X-MC-Unique: -f3xx-1YM3CGRoBgkhSAtA-1 Received: by mail-lf1-f71.google.com with SMTP id j4-20020a056512398400b0047866b0b823so3889419lfu.19 for ; Fri, 03 Jun 2022 02:45:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=rsKQEbWsef0bo2M/j5MGFrCZlYTFc+y8nkNtaE/+Xtw=; b=od66xCxT8B5qv8CbAb/+5LyG3Wo+8K/mlncS1WvQ049bNHt4LlXOklpo2v0JGJXuuF zRBuLfpVvLVvT5tdPjJCG5z5A3NBiZS+HO/5lEtpG1xam6qwtybUQ1tHS8r8AKNGSARj EmhkR91nUmUuY0CmgDyRQNfJw+FTQsCQFp1uCH87EYr7XrWMXcnLuD0YAahG7QpuJPYA UfL7FD8dzx8cxi0ZO3YbsYwuBMtjSPHa6YyVyitgIJvbCdknL9Dog8QkMFc/A+gpkNDk sUgRzB7AO7HDico1EnJGirF1UyhB1pq+8XRl97WaL7V/J9uj8UgiSZcm8LUCbqRm6mhp LGPw== X-Gm-Message-State: AOAM531M94ZJyyak5BrrAn7knlCnEb3CtOT2LDzFV46EILlSdrPYFjFL fCDsVw0D8uJb1ciNtsbfCce+KAK6WZHmRkAvStLXD+mG/0lcisrv8GmRIjI8TMrEqHXi+cQ5QmE KQkQbgyaKKWPrTWYDfpWmRQZKN376Iii9kkyte2ch X-Received: by 2002:a05:651c:c3:b0:255:6e3b:dfc3 with SMTP id 3-20020a05651c00c300b002556e3bdfc3mr6617830ljr.333.1654249505598; Fri, 03 Jun 2022 02:45:05 -0700 (PDT) X-Received: by 2002:a05:651c:c3:b0:255:6e3b:dfc3 with SMTP id 3-20020a05651c00c300b002556e3bdfc3mr6617820ljr.333.1654249505402; Fri, 03 Jun 2022 02:45:05 -0700 (PDT) MIME-Version: 1.0 From: Bruno Goncalves Date: Fri, 3 Jun 2022 11:44:54 +0200 Message-ID: Subject: [aarch64] INFO: rcu_sched detected expedited stalls on CPUs/tasks To: linux-arm-kernel@lists.infradead.org, LKML Cc: CKI Project Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-3.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, We recently started to hit this problem on some of our aarch64 machines. The stalls can happen even during boot. [ 1086.949484] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 23-... } 3 jiffies s: 3441 root: 0x2/. [ 1086.949510] rcu: blocking rcu_node structures (internal RCU debug): l=1:16-31:0x80/. [ 1086.949524] Task dump for CPU 23: [ 1086.949528] task:sugov:23 state:R running task stack: 0 pid: 2914 ppid: 2 flags:0x0000000a [ 1086.949543] Call trace: [ 1086.949546] __switch_to+0x104/0x19c [ 1086.949568] __schedule+0x410/0x67c [ 1086.949576] schedule+0x70/0xa8 [ 1086.949583] schedule_hrtimeout_range_clock+0x144/0x1d8 [ 1086.949592] schedule_hrtimeout_range+0x20/0x2c [ 1086.949598] usleep_range_state+0x5c/0x80 [ 1086.949603] check_pcc_chan+0x7c/0xf4 [ 1086.949615] send_pcc_cmd+0x130/0x2a8 [ 1086.949619] cppc_set_perf+0x12c/0x22c [ 1086.949624] cppc_cpufreq_set_target+0xf8/0x15c [cppc_cpufreq] [ 1086.949645] __cpufreq_driver_target+0x94/0xfc [ 1086.949658] sugov_work+0x98/0xe0 [ 1086.949675] kthread_worker_fn+0x124/0x2b8 [ 1086.949683] kthread+0xd4/0x558 [ 1086.949689] ret_from_fork+0x10/0x20 More logs: https://s3.us-east-1.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2022/06/02/553734635/redhat:553734635_aarch64/tests/Storage_block_filesystem_fio_test/12073991_aarch64_1_dmesg.log https://s3.us-east-1.amazonaws.com/arr-cki-prod-datawarehouse-public/datawarehouse-public/2022/06/02/553734635/redhat:553734635_aarch64/tests/Boot_test/12073991_aarch64_1_test_console.log CKI issue tracker: https://datawarehouse.cki-project.org/issue/1259 Thanks, Bruno Goncalves