From patchwork Thu May 20 09:19:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 445730 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=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 D5F69C4360C for ; Thu, 20 May 2021 09:54:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B11F161C70 for ; Thu, 20 May 2021 09:54:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234118AbhETJ4I (ORCPT ); Thu, 20 May 2021 05:56:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:53284 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234672AbhETJxz (ORCPT ); Thu, 20 May 2021 05:53:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B615F610A1; Thu, 20 May 2021 09:36:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621503403; bh=8APKXRuvakIe0b/7cybuTVvzfs8YW/6wc5fHM9HTOAM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SFmetlKpnvEXHsTpZuUCw1xkBRpzyRQcs25hVwHFwY0jxiatXDyvaW8owbbREi/uh k2CnVE0k8GWV9OVH129Cq3DFY1GWaEJkU+tdRkZaentxia4525djfUfz95xPJGNUn/ 0DjZWGYeKV7Tb9WL0CMDW6qjsTROD2h332Np3IR4= 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 4.19 205/425] crypto: qat - Fix a double free in adf_create_ring Date: Thu, 20 May 2021 11:19:34 +0200 Message-Id: <20210520092138.149043617@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092131.308959589@linuxfoundation.org> References: <20210520092131.308959589@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@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 57d2622728a5..4c0067f8c079 100644 --- a/drivers/crypto/qat/qat_common/adf_transport.c +++ b/drivers/crypto/qat/qat_common/adf_transport.c @@ -197,6 +197,7 @@ 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; }