{"id":328,"date":"2013-04-14T23:21:18","date_gmt":"2013-04-14T17:51:18","guid":{"rendered":"http:\/\/askadmin.com\/?p=328"},"modified":"2015-04-07T14:45:01","modified_gmt":"2015-04-07T09:15:01","slug":"bug-soft-lockup-cpu-centos","status":"publish","type":"post","link":"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/","title":{"rendered":"BUG: Soft lockup CPU &#8211; CentOS"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>BUG: soft lockup &#8211; CPU#0 stuck for 67s! [migration\/0:5].<\/strong><\/p>\n<p>I got this error a couple of times on centos server just after restarting \u00a0it . It just \u00a0stuck at boot screen .<\/p>\n<p>I dont know what is the exact cause for this but \u00a0it booted normally when I did \u00a0powercycle the server at first time .<\/p>\n<p>I think \u00a0this error is something related to device driver or something like\u00a0\u00a0device driver uses spinlocks improperly.<\/p>\n<p>But \u00a0the second time when it happend , i logged in to the server by booting from the grub menu with \u00a0<em>acpi=off<\/em> \u00a0 switch at the end of kernel arguments<\/p>\n<p><a href=\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/s\/\" rel=\"attachment wp-att-329\"><img loading=\"lazy\" class=\"aligncenter size-full wp-image-329\" alt=\"s\" src=\"https:\/\/askadmin.com\/aa\/aa\/wp-content\/uploads\/2013\/04\/s.jpg\" width=\"774\" height=\"474\" srcset=\"https:\/\/askadmin.com\/aa\/wp-content\/uploads\/2013\/04\/s.jpg 774w, https:\/\/askadmin.com\/aa\/wp-content\/uploads\/2013\/04\/s-500x306.jpg 500w\" sizes=\"(max-width: 774px) 100vw, 774px\" \/><\/a><\/p>\n<p>We can also increase the \u00a0kernel.softlockup_thresh \u00a0. for this ,<\/p>\n<p>#sysctl -w kernel.softlockup_thresh=120<\/p>\n<p>or edit<\/p>\n<p>etc\/sysctl.conf \u00a0to make it active at next reboot.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp; BUG: soft lockup &#8211; CPU#0 stuck for 67s! [migration\/0:5]. I got this error a couple of times on centos server just after restarting \u00a0it . It just \u00a0stuck at boot screen . I dont know what is the exact cause for this but \u00a0it booted normally when I [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[7],"tags":[126,125,127],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v18.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Soft lockup CPU<\/title>\n<meta name=\"description\" content=\"Soft lockup CPU\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Soft lockup CPU\" \/>\n<meta property=\"og:description\" content=\"Soft lockup CPU\" \/>\n<meta property=\"og:url\" content=\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/\" \/>\n<meta property=\"og:site_name\" content=\"Ask Admin - A Lifelong Learner\" \/>\n<meta property=\"article:published_time\" content=\"2013-04-14T17:51:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-04-07T09:15:01+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/askadmin.com\/aa\/aa\/wp-content\/uploads\/2013\/04\/s.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"balu sreekanth\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebSite\",\"@id\":\"https:\/\/askadmin.com\/aa\/#website\",\"url\":\"https:\/\/askadmin.com\/aa\/\",\"name\":\"Ask Admin - A Lifelong Learner\",\"description\":\"Mobile App Development | IP Telephony | Linux\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/askadmin.com\/aa\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/askadmin.com\/aa\/aa\/wp-content\/uploads\/2013\/04\/s.jpg\",\"contentUrl\":\"https:\/\/askadmin.com\/aa\/aa\/wp-content\/uploads\/2013\/04\/s.jpg\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/#webpage\",\"url\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/\",\"name\":\"Soft lockup CPU\",\"isPartOf\":{\"@id\":\"https:\/\/askadmin.com\/aa\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/#primaryimage\"},\"datePublished\":\"2013-04-14T17:51:18+00:00\",\"dateModified\":\"2015-04-07T09:15:01+00:00\",\"author\":{\"@id\":\"https:\/\/askadmin.com\/aa\/#\/schema\/person\/e1ff95d4a91ea001e25af3273533a345\"},\"description\":\"Soft lockup CPU\",\"breadcrumb\":{\"@id\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/askadmin.com\/aa\/bug-soft-lockup-cpu-centos\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/askadmin.com\/aa\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"BUG: Soft lockup CPU &#8211; 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