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[2620:137:e000::1:20]) by mx.google.com with ESMTP id dp21-20020a170906c15500b007830e41ed56si14834354ejc.431.2022.11.08.08.37.24; Tue, 08 Nov 2022 08:37:47 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=pqxQDRy5; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233979AbiKHPqM (ORCPT + 91 others); Tue, 8 Nov 2022 10:46:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35418 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233737AbiKHPqL (ORCPT ); Tue, 8 Nov 2022 10:46:11 -0500 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4321853EFF; Tue, 8 Nov 2022 07:46:10 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 8E06FCE1BD8; Tue, 8 Nov 2022 15:46:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0AA77C433C1; Tue, 8 Nov 2022 15:46:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1667922366; bh=DZsjrJI0/NXHowKMtK9SYTyubsi9Lc1SR872ceeBNU0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=pqxQDRy5bGuQgAuXXCGJcdX85KKTp8Q8RzXYVTmmQpXCz7DjZXcaqcG0JAXIUznMa eBtdRyLhgzsCcKhw0n+gfMiVN0E9GxzILMJD6f3BNJ0Cbn15NFsexe8HAB5o67cHZf DxzJpycPhig+vI5bADAn5MSoYKTZDmhu/850Isz8/phlCgeQ1lkio0FMvDeiL5zA5a ClUOW8u08P0BvMBLLa1sx70MMAFDyy/4xNCV6+e4tkL1D3cNogZfsInooH1B04pcFs vj/8IZGkIY99oO8efAlllg0wdmebiSvYmp/yQ04VolzXFWvTOk4fAQPjsKkuote4mo uY7i/cUlQudmQ== Date: Tue, 8 Nov 2022 08:46:03 -0700 From: Keith Busch To: Chaitanya Kulkarni Cc: Gerd Bayer , Jens Axboe , Christoph Hellwig , Sagi Grimberg , Niklas Schnelle , "linux-kernel@vger.kernel.org" , "linux-next@vger.kernel.org" , "linux-nvme@lists.infradead.org" Subject: Re: nvme-pci: NULL pointer dereference in nvme_dev_disable() on linux-next Message-ID: References: <7a14c467-e67e-eede-4ebc-d8105cc3bcd5@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7a14c467-e67e-eede-4ebc-d8105cc3bcd5@nvidia.com> X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 On Tue, Nov 08, 2022 at 03:50:33AM +0000, Chaitanya Kulkarni wrote: > On 11/7/22 09:28, Gerd Bayer wrote: > > > We believe this to be a race-condition somewhere, since this sequence does not produce the panic > > when executed interactively. > > > > You can try and bisect the code to point out at exact commit. Bisect doesn't work without a known good commit point.