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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 ABA99C4363F for ; Thu, 20 May 2021 11:34:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9CA7C61279 for ; Thu, 20 May 2021 11:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241926AbhETLft (ORCPT ); Thu, 20 May 2021 07:35:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:38292 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240283AbhETLPS (ORCPT ); Thu, 20 May 2021 07:15:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 1FA2961D5A; Thu, 20 May 2021 10:09:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621505344; bh=ObWEKhK3JfLwNLg2zfemR0Fj48iEmfyClSJdsclVNaA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jsWiGmoN3A/AkDdLLyTavw1AWYG/DjKfRguZmyXWsqzjou5znCUlBWF1StKZN5KKm 5Dnhkgg2thPWK5NowBxM4IOqXKRFCtdmCOENhQTdxbnkXn/EGyRTIO2LYWn0Q3Pbjd KK4uqaOpkg46U+lCJMZwQ8metZiokR9VCXtBabpA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lv Yunlong , Herbert Xu , Sasha Levin Subject: [PATCH 4.4 092/190] crypto: qat - Fix a double free in adf_create_ring Date: Thu, 20 May 2021 11:22:36 +0200 Message-Id: <20210520092105.248912575@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092102.149300807@linuxfoundation.org> References: <20210520092102.149300807@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lv Yunlong [ Upstream commit f7cae626cabb3350b23722b78fe34dd7a615ca04 ] In adf_create_ring, if the callee adf_init_ring() failed, the callee will free the ring->base_addr by dma_free_coherent() and return -EFAULT. Then adf_create_ring will goto err and the ring->base_addr will be freed again in adf_cleanup_ring(). My patch sets ring->base_addr to NULL after the first freed to avoid the double free. Fixes: a672a9dc872ec ("crypto: qat - Intel(R) QAT transport code") Signed-off-by: Lv Yunlong Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/qat/qat_common/adf_transport.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/crypto/qat/qat_common/adf_transport.c b/drivers/crypto/qat/qat_common/adf_transport.c index 3865ae8d96d9..78f0942a3270 100644 --- a/drivers/crypto/qat/qat_common/adf_transport.c +++ b/drivers/crypto/qat/qat_common/adf_transport.c @@ -198,6 +198,7 @@ static int adf_init_ring(struct adf_etr_ring_data *ring) dev_err(&GET_DEV(accel_dev), "Ring address not aligned\n"); dma_free_coherent(&GET_DEV(accel_dev), ring_size_bytes, ring->base_addr, ring->dma_addr); + ring->base_addr = NULL; return -EFAULT; } -- 2.30.2