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=-3.5 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 5D303C433DF for ; Sat, 11 Jul 2020 14:48:40 +0000 (UTC) Received: from shelob.surriel.com (shelob.surriel.com [96.67.55.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D9D612075F for ; Sat, 11 Jul 2020 14:48:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="DEaZK4dZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D9D612075F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernelnewbies-bounces@kernelnewbies.org Received: from localhost ([::1] helo=shelob.surriel.com) by shelob.surriel.com with esmtp (Exim 4.94) (envelope-from ) id 1juGnE-0006kP-FK; Sat, 11 Jul 2020 10:47:56 -0400 Received: from mail-qk1-x735.google.com ([2607:f8b0:4864:20::735]) by shelob.surriel.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94) (envelope-from ) id 1juGnA-0006kI-Ms for Kernelnewbies@kernelnewbies.org; Sat, 11 Jul 2020 10:47:52 -0400 Received: by mail-qk1-x735.google.com with SMTP id c30so8140087qka.10 for ; Sat, 11 Jul 2020 07:47:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=/CopPEGmY0ewft2W7d2Cl0jnOn/cNzmcaBmc8kppjo4=; b=DEaZK4dZvW9hH891TSF7C2vrO0h92sEiPxFEnek+dK79pq0LmyVmkB0KFNwvv+xs+z nb452z6e1QxJBU4KNGTyoIKVjHuTUlDPNPS3tUoeI6fpY+2ieC4UcrlLsUu+aG2MT9Pv 5wiK51hbAM/aSqNZRODbJQhrnGxUfIigpkUdQF/XdLFikaNEpz6UY4ea8t8R53sXkJUn p+xRbaIDtFbu7HGIsZBYowEaGFtNnjecUHYAaC6C9VAzEalARW14N7UbBTMi3szy3WFd wME1G0gM5lWE4/6AfR52rqgaYkh2nC7DYeNmMi9v6W61CgmVhlC+5DNX/jQHHm8gOMDO ujag== 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; bh=/CopPEGmY0ewft2W7d2Cl0jnOn/cNzmcaBmc8kppjo4=; b=Cemx4R9yBlq7cnXzDKGyzX/GzhnlYG98O0I6e6NmVREZIVLl5JUqYPdZaEW+t1WpQ8 cMJZk9FsSeCzG60QwSvqb2nL1z6xpsAksq9epgUzysMF8T1375LMKMjdxbKDEyOyzxq7 j+vUS1hVBI4wPSAmWI2LuzoJ+3FET4JcxOcRYb/xQke8uwy039nTRVQonnvYahYo0QZy GwFmrxCVuXpxPT/5YS4G0MxeZ/JxTGYaeT/mviWv7mu+JuiDp+ruWp4EsbkFT4xVsuK0 /ecIm+IMVYSDCQV9b1f6frA4+aXZLVV50jXUAbwPNXm0/1cDiO8NwEnAgbFlK6D1DB+n 4J4A== X-Gm-Message-State: AOAM531ffAaOTZru7wtLTGlClaG0SwZ8lA/USELVQtQxdJanUSTj0wK7 ALD9Mx0GBwVsogRxk0QkuU6NM+L6G0nVhp0hEnLVTJJ/9bo= X-Google-Smtp-Source: ABdhPJxmj5lK9EbSMFw6oYWwDuCobBED7tlnsMVJnVTR733axM0RpBERwj8qssAykKNfoFOJTnhpCC2NYZRcd6D6CDU= X-Received: by 2002:a37:6382:: with SMTP id x124mr64409592qkb.13.1594478809123; Sat, 11 Jul 2020 07:46:49 -0700 (PDT) MIME-Version: 1.0 From: =?UTF-8?B?5a2Z5LiW6b6ZIHN1bnNoaWxvbmc=?= Date: Sat, 11 Jul 2020 22:48:14 +0800 Message-ID: Subject: What are the major differences between soft lockup and hard lockup which are both detected by watchdog? To: kernelnewbies X-BeenThere: kernelnewbies@kernelnewbies.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Learn about the Linux kernel List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kernelnewbies-bounces@kernelnewbies.org What are the major differences between soft lockup and hard lockup which are both detected by watchdog? Here are some example logs: 1. Watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [cantest:1669] 2. NMI watchdog: Watchdog detected hard LOCKUP on CPU 0 Best regards. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@kernelnewbies.org https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies