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[23.128.96.19]) by mx.google.com with ESMTPS id p14-20020a170902a40e00b00158e566366dsi3107873plq.366.2022.06.01.12.10.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Jun 2022 12:10:06 -0700 (PDT) Received-SPF: softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) client-ip=23.128.96.19; Authentication-Results: mx.google.com; dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=SbweQnXK; spf=softfail (google.com: domain of transitioning linux-kernel-owner@vger.kernel.org does not designate 23.128.96.19 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id F14591257A7; Wed, 1 Jun 2022 11:50:24 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350176AbiFAHEp (ORCPT + 99 others); Wed, 1 Jun 2022 03:04:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348130AbiFAHEk (ORCPT ); Wed, 1 Jun 2022 03:04:40 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9FCA98BD3F for ; Wed, 1 Jun 2022 00:04:39 -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=KYbdBtVVDGcmnK4PU+VMDFfZ6GKxbpQfLKErQkJk4D8=; b=SbweQnXKdT/sczeuAinciZhi07 e9c5igZa03bIvcPB2Y6l/6m/SxFe2DzS7Kpz5CBgRnjTp4D6KUmuAnqqs7XdoO3PCuY6Cf/DrGAy4 2kMCj0Mx/QVswOssTjtDQbfrdMqVGuiekEWC4ZOOIrHqKJwdAuEtYisPNbfFvPQte5/x9j45n48UP nvgpi1q54Mmi+E4RRdTEWJFf3IslQovv6j3ycXhVyTAi3kMx8lOOlBosgqu6NlFTUfuA8B2hX3NFx gOJjSpBLUqyn2X3cD0Uo5L6otg6TfvGH6Kx0+dGikqBa7XET02f/Rmax426swFM5lUYJ0J55n3S3q 3lSKO+dA==; Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nwIPA-00EJXM-18; Wed, 01 Jun 2022 07:04:32 +0000 Date: Wed, 1 Jun 2022 00:04:32 -0700 From: Christoph Hellwig To: Hillf Danton Cc: Christoph Hellwig , Dan Carpenter , syzbot , linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] WARNING in dma_map_sgtable (2) Message-ID: References: <00000000000011e14605e03a125d@google.com> <20220530144542.4382-1-hdanton@sina.com> <20220530151044.GQ2146@kadam> <20220531090418.4552-1-hdanton@sina.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220531090418.4552-1-hdanton@sina.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no 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, May 31, 2022 at 05:04:18PM +0800, Hillf Danton wrote: > You are right. Thanks for taking a look. > > And IMO we can do less on the exporter side as the udmabuf misc device > is different from those that for instance are dma capable on the PCI bus. > Regular dma games go only on the importer side. I think you need the relevant maintainers here, this is above my paygrade.