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=-2.5 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT 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 826E8C04AB4 for ; Fri, 17 May 2019 14:38:20 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 473542083E for ; Fri, 17 May 2019 14:38:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 473542083E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A32AC6B0005; Fri, 17 May 2019 10:38:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9DFE26B0006; Fri, 17 May 2019 10:38:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8A77D6B0007; Fri, 17 May 2019 10:38:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by kanga.kvack.org (Postfix) with ESMTP id 351FF6B0005 for ; Fri, 17 May 2019 10:38:19 -0400 (EDT) Received: by mail-ed1-f71.google.com with SMTP id c26so10970006eda.15 for ; Fri, 17 May 2019 07:38:18 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:date:from:to :cc:subject:message-id:references:mime-version:content-disposition :in-reply-to:user-agent; bh=Hu4i0mDDC1ZPRzBSq6z0NH8TYj9tx5wj8BYhnI3jHLo=; b=FpN8drwtdWXTsbKqhb5VK0ej6VbvB3i0xLvvsfQHyFpJ8XMPF3X8ak2B+OmGNC9U7K T6ROHL2l3SYl07WKrQbmaPl+DHUqi+Zkt5nDnLCpXlqoDggoOstofdj+8nEnvwvn/2q7 68IC8FOLYOdCJPCu0cIE8HTcKqOvekkkhY9B1xsNUSWMdI+wp5Chdzrlu678ZJ99HyFf S1RFXLrG3oDPbEOixhWpSFxK7krLM9pcp4lbDItBamfJIYuvY6tRkIIWfGt8gBptsrQ2 dP8fqHuw9LiEi7PSZt0eNrZkuaEwwLs+yhhXjS8q1iIgtqlXgkZmYcuAgPrPh3j2L46O RqEg== X-Original-Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) smtp.mailfrom=mhocko@kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Gm-Message-State: APjAAAWbgW7M75z1zvYbpRkJlkapym8Xh9V5hxr/WlTbbsDVzlWX4tC9 OgoFsb4Ie7/u+VcB9Y7gKvxlsVh7dVV0HcHRXzsxyvaZNRQ/cutZWoGwPTHKE3M/ykVglyTeW/Y YAd3HhwV3ldnCnwU3ygrQzE1olElSLSnVHyYq+cAV4K8JGdhzGCdZ+qT8HQoefOw= X-Received: by 2002:a17:906:58c8:: with SMTP id e8mr33549846ejs.268.1558103898570; Fri, 17 May 2019 07:38:18 -0700 (PDT) X-Google-Smtp-Source: APXvYqwH/DdLnxxWm1xM+EOF23olD4avoWNRf8vzkuNn+RFp3mJTJJP3AEXxB83xkiWZurBl1JFm X-Received: by 2002:a17:906:58c8:: with SMTP id e8mr33549787ejs.268.1558103897850; Fri, 17 May 2019 07:38:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558103897; cv=none; d=google.com; s=arc-20160816; b=QEJDHbGJOjqTla2d+aq/KwVFV2pt9EdQgwMS6KrvriQ1bckzT9sjzUd8XI0KSu99Pw y+coP19r79cNCNH6fZt2gYrEy89sKc+9shlX3c8svV+QSCAjbTzzhKwiiXj+G9yN5vqZ jG9RakfjYFa0g1VaL6HtZQtca3fcmWywPrJjL5zud1WBVMR8+RDAnZmnP9S/Y08KzTy9 CrqewvCC+Ci3wja/Il5skWa5KALzrjpn422gWlH9FSRA4iq/4s+HCYBjaadmmrdTUYI9 DBgR0yklsPEKcikq2MtXN/dHYo3wFHyLi8l0sTt24y0u0oi2rGqSMp3wd+P/z9TDHqeo aweQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version:references :message-id:subject:cc:to:from:date; bh=Hu4i0mDDC1ZPRzBSq6z0NH8TYj9tx5wj8BYhnI3jHLo=; b=v1RWS+bUjI2MNhWHcjQh9Ep8hMsZOw4je0TGcqVpQeGDmiSFHhYicZtzYIEaPm9eZh 2X1MCPsEnN+yY0HxSscywfIUkWWub2BEAM7k9NZ2axpoYKO8uQBXhfnfb9Gm0IqJ5KVe XU0RSHhp8VN2oSy6UOppm6WjRLIs05ynMjdcf+IW7N60r6amJNwCaxi+2dkE+j0VGIv5 QVsDiTNg90Q0RKlGGe3fQzVDLZpxk6xL9ar3SrefI6G6Q/f5m9qKh8c9RtozpdnQ2BTN Sf3P0Wxt489I0zJbhG1UYLTat4TJ5OE9zz4+2FdKDMme8PR/5dMB8lhUWyLx7Gll0IhQ VN2g== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) smtp.mailfrom=mhocko@kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id j12si6046836eda.305.2019.05.17.07.38.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 17 May 2019 07:38:17 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) client-ip=195.135.220.15; Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning mhocko@kernel.org does not designate 195.135.220.15 as permitted sender) smtp.mailfrom=mhocko@kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 2CF3FAC31; Fri, 17 May 2019 14:38:17 +0000 (UTC) Date: Fri, 17 May 2019 16:38:16 +0200 From: Michal Hocko To: Pavel Tatashin Cc: "Verma, Vishal L" , "linux-kernel@vger.kernel.org" , "jmorris@namei.org" , "tiwai@suse.de" , "sashal@kernel.org" , "linux-mm@kvack.org" , "dave.hansen@linux.intel.com" , "david@redhat.com" , "bp@suse.de" , "akpm@linux-foundation.org" , "linux-nvdimm@lists.01.org" , "jglisse@redhat.com" , "zwisler@kernel.org" , "Jiang, Dave" , "bhelgaas@google.com" , "Busch, Keith" , "thomas.lendacky@amd.com" , "Huang, Ying" , "Wu, Fengguang" , "baiyaowei@cmss.chinamobile.com" Subject: Re: NULL pointer dereference during memory hotremove Message-ID: <20190517143816.GO6836@dhcp22.suse.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri 17-05-19 10:20:38, Pavel Tatashin wrote: > This panic is unrelated to circular lock issue that I reported in a > separate thread, that also happens during memory hotremove. > > xakep ~/x/linux$ git describe > v5.1-12317-ga6a4b66bd8f4 Does this happen on 5.0 as well? -- Michal Hocko SUSE Labs