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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 EE80FC282C4 for ; Mon, 4 Feb 2019 10:56:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4E312082E for ; Mon, 4 Feb 2019 10:56:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549277771; bh=jdKFL+yh5JYy86+uGO0CEyr1a8pijX88zUyNYzUQoIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VErgQCpemkFaDanNDIB3imGVszCM8DlqJ4rmLTovOtasu5usF10Wm4zn+K50T4reh cSMA/Q95ZXjBBvWyKGWofYpdASCxuNlEPWLeD8BPvo6/9cRnC6nLj4TmuuifSlVlSo Es4xAKV7VU5sn/vY/Nc0e5HrgYuLh1VWud403Rkk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732734AbfBDK4K (ORCPT ); Mon, 4 Feb 2019 05:56:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:50778 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732312AbfBDKxM (ORCPT ); Mon, 4 Feb 2019 05:53:12 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 42FC5217D6; Mon, 4 Feb 2019 10:53:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549277591; bh=jdKFL+yh5JYy86+uGO0CEyr1a8pijX88zUyNYzUQoIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BoRAC2Gkgk5zDVr6aXCYnVF/rc/91Sq+Uab642qxLv2DXHTxsLAZMn0hePz/iWTrY kb3FYuE1qv45zZORJFs0EntHDYzAGLdWmr0Fd9P7TwuwGGqPiOT/G463aE1XM+1twX HZWNYBwjPKtqgdWNYQVGiLWcug++++7+6KLU8JOY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Michael J. Ruhl" , Mike Marciniszyn , Dennis Dalessandro , Jason Gunthorpe Subject: [PATCH 4.20 63/80] IB/hfi1: Add limit test for RC/UC send via loopback Date: Mon, 4 Feb 2019 11:37:23 +0100 Message-Id: <20190204103628.896596005@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190204103620.287366543@linuxfoundation.org> References: <20190204103620.287366543@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.20-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mike Marciniszyn commit 09ce351dff8e7636af0beb72cd4a86c3904a0500 upstream. Fix potential memory corruption and panic in loopback for IB_WR_SEND variants. The code blindly assumes the posted length will fit in the fetched rwqe, which is not a valid assumption. Fix by adding a limit test, and triggering the appropriate send completion and putting the QP in an error state. This mimics the handling for non-loopback QPs. Fixes: 15703461533a ("IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt") Cc: #v4.20+ Reviewed-by: Michael J. Ruhl Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/sw/rdmavt/qp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -2903,6 +2903,8 @@ send: goto op_err; if (!ret) goto rnr_nak; + if (wqe->length > qp->r_len) + goto inv_err; break; case IB_WR_RDMA_WRITE_WITH_IMM: @@ -3071,7 +3073,10 @@ op_err: goto err; inv_err: - send_status = IB_WC_REM_INV_REQ_ERR; + send_status = + sqp->ibqp.qp_type == IB_QPT_RC ? + IB_WC_REM_INV_REQ_ERR : + IB_WC_SUCCESS; wc.status = IB_WC_LOC_QP_OP_ERR; goto err;