From patchwork Wed Feb 15 10:10:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Natalia Petrova X-Patchwork-Id: 13141503 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 86BAAC636CC for ; Wed, 15 Feb 2023 10:11:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233525AbjBOKLC (ORCPT ); Wed, 15 Feb 2023 05:11:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229536AbjBOKLC (ORCPT ); Wed, 15 Feb 2023 05:11:02 -0500 Received: from exchange.fintech.ru (e10edge.fintech.ru [195.54.195.159]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F5A3BBBB; Wed, 15 Feb 2023 02:10:58 -0800 (PST) Received: from Ex16-01.fintech.ru (10.0.10.18) by exchange.fintech.ru (195.54.195.169) with Microsoft SMTP Server (TLS) id 14.3.498.0; Wed, 15 Feb 2023 13:10:48 +0300 Received: from KANASHIN1.fintech.ru (10.0.253.125) by Ex16-01.fintech.ru (10.0.10.18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.4; Wed, 15 Feb 2023 13:10:48 +0300 From: Natalia Petrova To: Jason Gunthorpe CC: Natalia Petrova , Leon Romanovsky , , , Subject: [PATCH] ocrdma: Fix potential null-ptr-deref in ocrdma_is_qp_in_rq_flushlist() Date: Wed, 15 Feb 2023 13:10:45 +0300 Message-ID: <20230215101045.476291-1-n.petrova@fintech.ru> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.0.253.125] X-ClientProxiedBy: Ex16-01.fintech.ru (10.0.10.18) To Ex16-01.fintech.ru (10.0.10.18) Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org The 'qp->rq_cq' pointer can be equal to null in ocrdma_destroy_qp() function. That's why 'qp->rq_cq' should be checked for null in ocrdma_del_flush_qp() before it will be dereferenced in ocrdma_is_qp_in_rq_flushlist(). Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: fe2caefcdf58 ("RDMA/ocrdma: Add driver for Emulex OneConnect IBoE RDMA adapter") Signed-off-by: Natalia Petrova --- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index dd4021b11963..a3d994ee178c 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -1660,7 +1660,7 @@ void ocrdma_del_flush_qp(struct ocrdma_qp *qp) found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp); if (found) list_del(&qp->sq_entry); - if (!qp->srq) { + if (!qp->srq && qp->rq_cq) { found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp); if (found) list_del(&qp->rq_entry);