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 A3DBEC7EE2D for ; Mon, 15 May 2023 16:43:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242883AbjEOQnl (ORCPT ); Mon, 15 May 2023 12:43:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242645AbjEOQng (ORCPT ); Mon, 15 May 2023 12:43:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E23E46BD for ; Mon, 15 May 2023 09:43:26 -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 6AE786224B for ; Mon, 15 May 2023 16:43:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5BF4EC433D2; Mon, 15 May 2023 16:43:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1684169005; bh=UaVUNDuAd6sNyyicXipIYUf6FCxE9BpdtsRdu342S3w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ufc6crUrpo1QnSmrtfwAJxJA0tmvtDdxDDrAOkupQk0D9gSClSgIZhgGslz2S008C zotHpb8JOghC3kX8LhfPTGVqOavE+8vl7ctkyhVyfFiEoSitLCXmZ+Irm1EjCLy5Dm NWjxbEFNV13IeZT1bdvo0BjXF4X/0GhSh7/cWs70= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Natalia Petrova , Leon Romanovsky , Sasha Levin Subject: [PATCH 4.19 111/191] RDMA/rdmavt: Delete unnecessary NULL check Date: Mon, 15 May 2023 18:25:48 +0200 Message-Id: <20230515161711.299651018@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230515161707.203549282@linuxfoundation.org> References: <20230515161707.203549282@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: stable@vger.kernel.org From: Natalia Petrova [ Upstream commit b73a0b80c69de77d8d4942abb37066531c0169b2 ] There is no need to check 'rdi->qp_dev' for NULL. The field 'qp_dev' is created in rvt_register_device() which will fail if the 'qp_dev' allocation fails in rvt_driver_qp_init(). Overwise this pointer doesn't changed and passed to rvt_qp_exit() by the next step. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 0acb0cc7ecc1 ("IB/rdmavt: Initialize and teardown of qpn table") Signed-off-by: Natalia Petrova Link: https://lore.kernel.org/r/20230303124408.16685-1-n.petrova@fintech.ru Signed-off-by: Leon Romanovsky Signed-off-by: Sasha Levin --- drivers/infiniband/sw/rdmavt/qp.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c index fbc316775669c..c12fc2eace161 100644 --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -321,8 +321,6 @@ void rvt_qp_exit(struct rvt_dev_info *rdi) if (qps_inuse) rvt_pr_err(rdi, "QP memory leak! %u still in use\n", qps_inuse); - if (!rdi->qp_dev) - return; kfree(rdi->qp_dev->qp_table); free_qpn_table(&rdi->qp_dev->qpn_table); -- 2.39.2