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=-6.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 18604C4363D for ; Wed, 23 Sep 2020 05:06:59 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 2B98321941 for ; Wed, 23 Sep 2020 05:06:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="I+JGRs5C" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2B98321941 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=4jDv7/xaRb3nPD6QLfy0uQTgRfc0gs9Pmd93i08QFaM=; b=I+JGRs5CoS14Q9CngHiXrsEcI BqnFkGfy/I9jKBigX5/d8SuUel0ZNXS8u7zN4EmCXSkYo48QaaCsnJfysTSYOSwqSiUiBI/l+mCsR w/F2bsCH/SGxyQ9glFbGjk/TecQcNAJ+QHo3igFCvfEQuFiQ4FQIra6perYYgQiBTaIc+c1Mm2k1U kyikAHOfKLwy77jmYBmfPHm0473RRNAZiBQdIwVUbQ6AZl3b0P0UyM42Lioq/6XxaEKWH9IHUgyZY hrNv2wcVbQR7jJSZT0tOoehnx8DRPkEVBjE0+zEZ0k0Y6SOCqFcX/tnGPuGihFhxJINSJZoDpmewd /OFkEtvyQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKwzS-0004GV-JN; Wed, 23 Sep 2020 05:06:50 +0000 Received: from verein.lst.de ([213.95.11.211]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKwzP-0004G7-UR for linux-nvme@lists.infradead.org; Wed, 23 Sep 2020 05:06:48 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 9B53767373; Wed, 23 Sep 2020 07:06:41 +0200 (CEST) Date: Wed, 23 Sep 2020 07:06:41 +0200 From: Christoph Hellwig To: Tong Zhang Subject: Re: [PATCH] nvme: fix use-after-free during booting Message-ID: <20200923050641.GA14878@lst.de> References: <20200916153605.5253-1-ztong0001@gmail.com> <20200922135956.GA23437@lst.de> <20200922164154.GA1894@lst.de> <61E8905E-E3FE-46EB-8283-9B35B4F069E1@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <61E8905E-E3FE-46EB-8283-9B35B4F069E1@gmail.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200923_010648_089130_A922CBEE X-CRM114-Status: GOOD ( 12.36 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagi Grimberg , linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Jens Axboe , Keith Busch , Christoph Hellwig Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Tue, Sep 22, 2020 at 04:34:45PM -0400, Tong Zhang wrote: > Hi Christoph, > I modified the patch a bit and now it works. So you're still hitting the WARN_ON_ONCE? I think we need to fix that as well, but all the ideas I have will turn into a bigger project, so I think I'll submit this one to Jens, and then do things incrementally. Can you share your reproducer? _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme