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,URIBL_BLOCKED,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 E436FC3A59F for ; Thu, 29 Aug 2019 18:16:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6DF92339E for ; Thu, 29 Aug 2019 18:16:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567102572; bh=YaV+f0950vjRD5TeumxAXpgg2lCSSecBsPFAdte19FQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=tVfugufTKQ0B2+p3XokHPiwl62xqZBzyLmcv8KNuKdohhC5xVLnZl8dZXVCJvvMsf qwu1h4ZSGgTDl0YxoztjftZHCr1o9Ixs45Y1kaP/zHmhPMsODO2QSTBa7tAR79Ak+V 2ugLVBVDBx8fO2h0tvnZ4j9FWxVCJ54Euv9Myhdk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729638AbfH2SQM (ORCPT ); Thu, 29 Aug 2019 14:16:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:58172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728236AbfH2SQL (ORCPT ); Thu, 29 Aug 2019 14:16:11 -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 6228F23404; Thu, 29 Aug 2019 18:16:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567102570; bh=YaV+f0950vjRD5TeumxAXpgg2lCSSecBsPFAdte19FQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RQPmj9J474XRAC57GsCmWTPer88hbCdzU0vS0+HGGCulwmEOUUsNwjsMvq5tcPfmF hnNxwt2yQt5y2QVS2PvmLEmjIR6R6dr9TwKF5KIBo0bEZKGVBFb6TVvxVIVjyg2p7e LELgrXkkyRX+8uMt0ffdhBjlUczJtYRMniD8vA2g= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Bill Kuzeja , Bill Kuzeja , Himanshu Madhani , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 16/45] scsi: qla2xxx: Fix gnl.l memory leak on adapter init failure Date: Thu, 29 Aug 2019 14:15:16 -0400 Message-Id: <20190829181547.8280-16-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190829181547.8280-1-sashal@kernel.org> References: <20190829181547.8280-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Bill Kuzeja [ Upstream commit 26fa656e9a0cbccddf7db132ea020d2169dbe46e ] If HBA initialization fails unexpectedly (exiting via probe_failed:), we may fail to free vha->gnl.l. So that we don't attempt to double free, set this pointer to NULL after a free and check for NULL at probe_failed: so we know whether or not to call dma_free_coherent. Signed-off-by: Bill Kuzeja Acked-by: Himanshu Madhani Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_attr.c | 2 ++ drivers/scsi/qla2xxx/qla_os.c | 11 ++++++++++- 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index f8f4d3ea67f3f..15d493f30810f 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -2191,6 +2191,8 @@ qla24xx_vport_delete(struct fc_vport *fc_vport) dma_free_coherent(&ha->pdev->dev, vha->gnl.size, vha->gnl.l, vha->gnl.ldma); + vha->gnl.l = NULL; + vfree(vha->scan.l); if (vha->qpair && vha->qpair->vp_idx == vha->vp_idx) { diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 42b8f0d3e580d..02fa81f122c22 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -3395,6 +3395,12 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) return 0; probe_failed: + if (base_vha->gnl.l) { + dma_free_coherent(&ha->pdev->dev, base_vha->gnl.size, + base_vha->gnl.l, base_vha->gnl.ldma); + base_vha->gnl.l = NULL; + } + if (base_vha->timer_active) qla2x00_stop_timer(base_vha); base_vha->flags.online = 0; @@ -3624,7 +3630,7 @@ qla2x00_remove_one(struct pci_dev *pdev) if (!atomic_read(&pdev->enable_cnt)) { dma_free_coherent(&ha->pdev->dev, base_vha->gnl.size, base_vha->gnl.l, base_vha->gnl.ldma); - + base_vha->gnl.l = NULL; scsi_host_put(base_vha->host); kfree(ha); pci_set_drvdata(pdev, NULL); @@ -3663,6 +3669,8 @@ qla2x00_remove_one(struct pci_dev *pdev) dma_free_coherent(&ha->pdev->dev, base_vha->gnl.size, base_vha->gnl.l, base_vha->gnl.ldma); + base_vha->gnl.l = NULL; + vfree(base_vha->scan.l); if (IS_QLAFX00(ha)) @@ -4602,6 +4610,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht, "Alloc failed for scan database.\n"); dma_free_coherent(&ha->pdev->dev, vha->gnl.size, vha->gnl.l, vha->gnl.ldma); + vha->gnl.l = NULL; scsi_remove_host(vha->host); return NULL; } -- 2.20.1