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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 C8B9AC2D0DB for ; Wed, 22 Jan 2020 09:43:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 958A52468B for ; Wed, 22 Jan 2020 09:43:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579686231; bh=a05LJki7/JjRwAFxjy9uKz+C9AjD8lWYO8aJVVSFOVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lYicOu8Puq5eacREkXxLRm6mJWfbEvF8xMoml7zCgCw02SwryJUyArdVc8nzyHCMv Vvm0ze/6j6O7b4mhgshTD13QLESZ8aSnbVauTkZDh3wZMCRTfNCbBEClBrmFRdDcue vkmjWQCyU8tMyzbbVKpiGhfFDn5JUFNz2bc2hyXo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387949AbgAVJnu (ORCPT ); Wed, 22 Jan 2020 04:43:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:36480 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387932AbgAVJnq (ORCPT ); Wed, 22 Jan 2020 04:43:46 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C3E022468C; Wed, 22 Jan 2020 09:43:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579686226; bh=a05LJki7/JjRwAFxjy9uKz+C9AjD8lWYO8aJVVSFOVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ngxCaAk4kdUJMGvJXJ67ELmgi89ps+kn7d7CYqllwbO5ahDHo7A7o10pstd23GO+o Zwjz+Ip9sTFZS53TwKxjM/2cZXAYlGrRJ+GyTqULI8/rFtQjxCAt+NbRIuBFmYzHaI Je7u16r+FP5nr8wHTaLMTxjKk/J3k2Uu+G8ADODg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pan Bian , Manish Rangankar , "Martin K. Petersen" Subject: [PATCH 4.19 094/103] scsi: qla4xxx: fix double free bug Date: Wed, 22 Jan 2020 10:29:50 +0100 Message-Id: <20200122092816.077967082@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200122092803.587683021@linuxfoundation.org> References: <20200122092803.587683021@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pan Bian commit 3fe3d2428b62822b7b030577cd612790bdd8c941 upstream. The variable init_fw_cb is released twice, resulting in a double free bug. The call to the function dma_free_coherent() before goto is removed to get rid of potential double free. Fixes: 2a49a78ed3c8 ("[SCSI] qla4xxx: added IPv6 support.") Link: https://lore.kernel.org/r/1572945927-27796-1-git-send-email-bianpan2016@163.com Signed-off-by: Pan Bian Acked-by: Manish Rangankar Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/qla4xxx/ql4_mbx.c | 3 --- 1 file changed, 3 deletions(-) --- a/drivers/scsi/qla4xxx/ql4_mbx.c +++ b/drivers/scsi/qla4xxx/ql4_mbx.c @@ -640,9 +640,6 @@ int qla4xxx_initialize_fw_cb(struct scsi if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma) != QLA_SUCCESS) { - dma_free_coherent(&ha->pdev->dev, - sizeof(struct addr_ctrl_blk), - init_fw_cb, init_fw_cb_dma); goto exit_init_fw_cb; }