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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,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 3372FC282CE for ; Mon, 11 Feb 2019 16:07:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 029B721A80 for ; Mon, 11 Feb 2019 16:07:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549901251; bh=a6TPrb6TInwE1Lu8PJL7WVUz3lh+FUr4fohOjbp55fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=wHKRIIMlXpZwy3W5iuc7Mbk4uFRKiyvLQWxKWK99/3Tpb+UBddMLCPOhsdAeWP9Lp xbslMQk2dJUxiFwu87tf68U6/SWEd7Pzpi6Y0NEDXfTdG0LXcB+2fAXa5Kbm0OFGGX B+ccG1NBcpdQaYDtAi5Ke6cI5JbKU88KHe2x0IZ0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729949AbfBKQH3 (ORCPT ); Mon, 11 Feb 2019 11:07:29 -0500 Received: from mail.kernel.org ([198.145.29.99]:60432 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727863AbfBKO0e (ORCPT ); Mon, 11 Feb 2019 09:26:34 -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 EEB5E20821; Mon, 11 Feb 2019 14:26:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549895193; bh=a6TPrb6TInwE1Lu8PJL7WVUz3lh+FUr4fohOjbp55fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VYNT/fKTY8FRiUzE6w3eDjmEO0DLYiSB2EQFvWuei6rsA7om8TJYQorcmM6PGO76f FhGOmdVsnvjMmjoYzmDFx3rEh6pu1iM/+TRvyROQURJGoBcM+nxIzflSnZemUs+xsO qndmaBhpLgxv63RrSAKue0xCkFtB6Cye4I6fL5GI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mike Marciniszyn , Kaike Wan , Dennis Dalessandro , Jason Gunthorpe , Sasha Levin Subject: [PATCH 4.20 125/352] IB/hfi1: Unreserve a reserved request when it is completed Date: Mon, 11 Feb 2019 15:15:52 +0100 Message-Id: <20190211141854.280655948@linuxfoundation.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190211141846.543045703@linuxfoundation.org> References: <20190211141846.543045703@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. ------------------ [ Upstream commit ca95f802ef5139722acc8d30aeaab6fe5bbe939e ] Currently, When a reserved operation is completed, its entry in the send queue will not be unreserved, which leads to the miscalculation of qp->s_avail and thus the triggering of a WARN_ON call trace. This patch fixes the problem by unreserving the reserved operation when it is completed. Fixes: 856cc4c237ad ("IB/hfi1: Add the capability for reserved operations") Reviewed-by: Mike Marciniszyn Signed-off-by: Kaike Wan Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe Signed-off-by: Sasha Levin --- drivers/infiniband/hw/hfi1/rc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c index 188aa4f686a0..ea3aac264df9 100644 --- a/drivers/infiniband/hw/hfi1/rc.c +++ b/drivers/infiniband/hw/hfi1/rc.c @@ -1157,6 +1157,7 @@ void hfi1_rc_send_complete(struct rvt_qp *qp, struct hfi1_opa_header *opah) if (cmp_psn(wqe->lpsn, qp->s_sending_psn) >= 0 && cmp_psn(qp->s_sending_psn, qp->s_sending_hpsn) <= 0) break; + rvt_qp_wqe_unreserve(qp, wqe); s_last = qp->s_last; trace_hfi1_qp_send_completion(qp, wqe, s_last); if (++s_last >= qp->s_size) @@ -1209,6 +1210,7 @@ static struct rvt_swqe *do_rc_completion(struct rvt_qp *qp, u32 s_last; rvt_put_swqe(wqe); + rvt_qp_wqe_unreserve(qp, wqe); s_last = qp->s_last; trace_hfi1_qp_send_completion(qp, wqe, s_last); if (++s_last >= qp->s_size) -- 2.19.1