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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 1E5C8CA9EB9 for ; Wed, 23 Oct 2019 16:37:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 E3F0D20650 for ; Wed, 23 Oct 2019 16:37:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="pGndv8be" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E3F0D20650 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=deltatee.com 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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Subject:MIME-Version:References: In-Reply-To:Message-Id:Date:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=luKMCHxwfF82dXSROFk0viVFXa6yS9UWFj8uA6u2/cU=; b=pGndv8be0dWG26 TVtbSO7/qJzhCxeK6kB1lqKq6oJWamVY2/aZzwvMSt6Vn41/Ab1YvXeNk2jdw3s5Su8I6uMyFo4XQ c4SnIgYWL7irV5VJh6HVNuEbCkn1zLeM74JLZ9XkQOtyX2eIgMJJvJYMLLF6TDeXgTuL9wgj3ufeO phKTK1jePvCML+8qSjvKpWDbQPBvbyFxbiw9xuUzpqeR4TXrDAb80mqxB6Xe3g1ge6VuxCK+sI9UB yfjbZs5uoCFNpa1StLbU6cVjSMPwSjaBAJzVaCLT5OsdGJ8I+X8J7TMVqCK5yHPjkLaqnywgPrn2/ Khp5XlmpCalc9tZPc1yQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iNJdB-00005l-9G; Wed, 23 Oct 2019 16:37:05 +0000 Received: from ale.deltatee.com ([207.54.116.67]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iNJcA-0007dx-IS for linux-nvme@lists.infradead.org; Wed, 23 Oct 2019 16:36:04 +0000 Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1iNJc4-0006Vs-8H; Wed, 23 Oct 2019 10:36:01 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.92) (envelope-from ) id 1iNJc2-00016V-Is; Wed, 23 Oct 2019 10:35:54 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org Date: Wed, 23 Oct 2019 10:35:39 -0600 Message-Id: <20191023163545.4193-2-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191023163545.4193-1-logang@deltatee.com> References: <20191023163545.4193-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, hch@lst.de, sagi@grimberg.me, Chaitanya.Kulkarni@wdc.com, maxg@mellanox.com, sbates@raithlin.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH 1/7] nvmet-tcp: Don't check data_len in nvmet_tcp_map_data() X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191023_093602_956132_A3BB21B5 X-CRM114-Status: GOOD ( 11.87 ) 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 , Chaitanya Kulkarni , Stephen Bates , Max Gurtovoy , Logan Gunthorpe , 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 None of the other transports check data_len which is verified in core code. The function should instead check that the sgl length is non-zero. Signed-off-by: Logan Gunthorpe Reviewed-by: Sagi Grimberg --- drivers/nvme/target/tcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index d535080b781f..1e2d92f818ad 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -320,7 +320,7 @@ static int nvmet_tcp_map_data(struct nvmet_tcp_cmd *cmd) struct nvme_sgl_desc *sgl = &cmd->req.cmd->common.dptr.sgl; u32 len = le32_to_cpu(sgl->length); - if (!cmd->req.data_len) + if (!len) return 0; if (sgl->type == ((NVME_SGL_FMT_DATA_DESC << 4) | -- 2.20.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme