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 87E83C32771 for ; Fri, 19 Aug 2022 16:26:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352540AbiHSQ0j (ORCPT ); Fri, 19 Aug 2022 12:26:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352498AbiHSQVH (ORCPT ); Fri, 19 Aug 2022 12:21:07 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17E6010FDA; Fri, 19 Aug 2022 09:02:37 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 404B5617A5; Fri, 19 Aug 2022 16:02:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 54AF1C433D6; Fri, 19 Aug 2022 16:02:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660924956; bh=L88j/vM4soCdE7vM4SQBpzrBszT1ntIHSWMlGAgHENk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oo8v68L9ozZrEu1BD0B7/sx8a4gZqEFkj7x55C4YCcHdvoiJP607j7FnbXaZ5CVyI PE2yx0Dm2A33DNptW6B0IXF+me4dtL3mTh+5D5eZiyLDWZ5I/saJkmo454+0sKx4Ew WF/M5Fvp3Y9efkQ6YWlPabCGsW4VfWr6qXiXa/cw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jianglei Nie , =?UTF-8?q?Michal=20Kalderon=C2=A0?= , Leon Romanovsky , Sasha Levin Subject: [PATCH 5.10 336/545] RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr() Date: Fri, 19 Aug 2022 17:41:46 +0200 Message-Id: <20220819153844.429343080@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220819153829.135562864@linuxfoundation.org> References: <20220819153829.135562864@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jianglei Nie [ Upstream commit b3236a64ddd125a455ef5b5316c1b9051b732974 ] __qedr_alloc_mr() allocates a memory chunk for "mr->info.pbl_table" with init_mr_info(). When rdma_alloc_tid() and rdma_register_tid() fail, "mr" is released while "mr->info.pbl_table" is not released, which will lead to a memory leak. We should release the "mr->info.pbl_table" with qedr_free_pbl() when error occurs to fix the memory leak. Fixes: e0290cce6ac0 ("qedr: Add support for memory registeration verbs") Link: https://lore.kernel.org/r/20220714061505.2342759-1-niejianglei2021@163.com Signed-off-by: Jianglei Nie Acked-by: Michal Kalderon  Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/hw/qedr/verbs.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index bffacb47ea0e..3543b9af10b7 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -3093,7 +3093,7 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd, else DP_ERR(dev, "roce alloc tid returned error %d\n", rc); - goto err0; + goto err1; } /* Index only, 18 bit long, lkey = itid << 8 | key */ @@ -3117,7 +3117,7 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd, rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr); if (rc) { DP_ERR(dev, "roce register tid returned an error %d\n", rc); - goto err1; + goto err2; } mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key; @@ -3126,8 +3126,10 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd, DP_DEBUG(dev, QEDR_MSG_MR, "alloc frmr: %x\n", mr->ibmr.lkey); return mr; -err1: +err2: dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid); +err1: + qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table); err0: kfree(mr); return ERR_PTR(rc); -- 2.35.1