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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 E4F32C2BA19 for ; Sat, 11 Apr 2020 23:50:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C07EA206F7 for ; Sat, 11 Apr 2020 23:50:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586649026; bh=WC5mlF3RZoMAhnfZdMrvYguSUQNy45NeVegxFt7B9y0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=rogbFNZPiDQHqww+agReDwIThM3cqRRYAESp4MJcS0MZMN6Btj4Lv7jbWKJOGm6Jd La1mPIJeVtx9K5zaNbww4lPalJ7fRqsLeCmj6PpsvecxGWHP93LJuhZqS5/LK3UmF+ iMhphT0M3lCOJJg52rOROhR7Q1Eqe13nSDslWxYM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726994AbgDKXEE (ORCPT ); Sat, 11 Apr 2020 19:04:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:36832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726980AbgDKXEC (ORCPT ); Sat, 11 Apr 2020 19:04:02 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9D76420CC7; Sat, 11 Apr 2020 23:04:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586646242; bh=WC5mlF3RZoMAhnfZdMrvYguSUQNy45NeVegxFt7B9y0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CuLcr9ru8vvy7xQ0ctNJ7xXUoROelR0az9lKCpEpzbos0Z88VeWwyha4mRj59Unbg D95gCFTQEUD0hQbO4qGmzXSpUt9Fy1NeqS8Bpel4JAYjOshv/50lvtz7RBLKE1lig6 YjcDzL5WpliwoXW73PHDNgFeNi6DIBeKVgpzVcec= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Shannon Nelson , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 5.6 011/149] ionic: check for NULL structs on teardown Date: Sat, 11 Apr 2020 19:01:28 -0400 Message-Id: <20200411230347.22371-11-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200411230347.22371-1-sashal@kernel.org> References: <20200411230347.22371-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Shannon Nelson [ Upstream commit a4674f34711b96b65bdc4d54eca88d2fd123bbc6 ] Make sure the queue structs exist before trying to tear them down to make for safer error recovery. Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Shannon Nelson Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- .../net/ethernet/pensando/ionic/ionic_lif.c | 26 ++++++++++--------- .../net/ethernet/pensando/ionic/ionic_main.c | 7 ++++- 2 files changed, 20 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c index 938e19ee0bcd2..1a569d9b0c3a0 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c @@ -318,19 +318,21 @@ static void ionic_qcqs_free(struct ionic_lif *lif) lif->adminqcq = NULL; } - for (i = 0; i < lif->nxqs; i++) - if (lif->rxqcqs[i].stats) - devm_kfree(dev, lif->rxqcqs[i].stats); - - devm_kfree(dev, lif->rxqcqs); - lif->rxqcqs = NULL; - - for (i = 0; i < lif->nxqs; i++) - if (lif->txqcqs[i].stats) - devm_kfree(dev, lif->txqcqs[i].stats); + if (lif->rxqcqs) { + for (i = 0; i < lif->nxqs; i++) + if (lif->rxqcqs[i].stats) + devm_kfree(dev, lif->rxqcqs[i].stats); + devm_kfree(dev, lif->rxqcqs); + lif->rxqcqs = NULL; + } - devm_kfree(dev, lif->txqcqs); - lif->txqcqs = NULL; + if (lif->txqcqs) { + for (i = 0; i < lif->nxqs; i++) + if (lif->txqcqs[i].stats) + devm_kfree(dev, lif->txqcqs[i].stats); + devm_kfree(dev, lif->txqcqs); + lif->txqcqs = NULL; + } } static void ionic_link_qcq_interrupts(struct ionic_qcq *src_qcq, diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c index a8e3fb73b4650..ee690f8f381ca 100644 --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -240,11 +240,16 @@ static void ionic_adminq_cb(struct ionic_queue *q, static int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx) { - struct ionic_queue *adminq = &lif->adminqcq->q; + struct ionic_queue *adminq; int err = 0; WARN_ON(in_interrupt()); + if (!lif->adminqcq) + return -EIO; + + adminq = &lif->adminqcq->q; + spin_lock(&lif->adminq_lock); if (!ionic_q_has_space(adminq, 1)) { err = -ENOSPC; -- 2.20.1