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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 843AAC43334 for ; Wed, 20 Jul 2022 06:18:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239365AbiGTGSQ (ORCPT ); Wed, 20 Jul 2022 02:18:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53974 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239401AbiGTGSQ (ORCPT ); Wed, 20 Jul 2022 02:18:16 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 622474E623 for ; Tue, 19 Jul 2022 23:18:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=dUiIiMcRNV0/EisTLoCzK1N0eHx3Feg8TOv1fCz87j4=; b=iJ8NpjoMP9ePJb4J7tdv2wKFqb Nvv66qSj9hGA3hbIe7CDfv3lGkXGz1mExkfiRCsLgL7D+fJzvp+KL81UvqF+WNSiyF79zyZfIMdPb DsqEdWwQtdQ9x8fqdIh5grqB0vDcUC7D2mYKa33VDcwpvB8njYjFu6NTOjITxV0psJZWLlNO+PBY8 gUqT27qz3rIA4WzvAtOjyGXgfuiqHIvE1bAfIRkWdU7jISbHDqUxm1SphcgZPrSsO/BeSl4LduUse a/Ldc+JEYAgiD1P2vlDEIBUj6QE2I7j+LRikHsF6QdAASw4QzO6BdrKZZk0EI+GrOyDCCzSbANfhV NmnjyVmg==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1oE326-00176O-LJ; Wed, 20 Jul 2022 06:18:06 +0000 Date: Tue, 19 Jul 2022 23:18:06 -0700 From: Christoph Hellwig To: Sagi Grimberg Cc: Yi Zhang , linux-block , "open list:NVM EXPRESS DRIVER" Subject: Re: [bug report] blktests nvme/tcp triggered WARNING at kernel/workqueue.c:2628 check_flush_dependency+0x110/0x14c Message-ID: References: <5ce566fd-f871-48dc-1cb7-30b745c58f05@grimberg.me> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5ce566fd-f871-48dc-1cb7-30b745c58f05@grimberg.me> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Sun, Jul 10, 2022 at 12:41:33PM +0300, Sagi Grimberg wrote: > > > Hello > > > > I reproduced this issue on the linux-block/for-next, pls help check > > it, feel free to let me know if you need info/test, thanks. > > > These reports are making me tired... Should we just remove > MEM_RECLAIM from all nvme/nvmet workqueues are be done with > it? > > The only downside is that nvme reset/error-recovery will > also be susceptible for low-memory situation... We can't just do that. We need to sort out the dependency chains properly.