From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EE99F522E for ; Sun, 9 Jul 2023 11:35:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 71B20C433C8; Sun, 9 Jul 2023 11:35:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1688902525; bh=XMuA7nh0BQwZUUMeFkOezyFXWyBpxIiuq4Q67HyTXfU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZuewMDDmQaPVcSTNV0Tkineg4RKz1+u1hXtZn5pOnUNl75K/qEHfG9DuRU+hV7QCI ZHus6pUHFqerX1Xrniib33NZZ+g/5nuhmy7UxXwNcMhntUyqQ7bpz4sofqnUZik3Il rQDemhLmgpsS81Mf0Q4J2bNnNia4Qpzlm+V1C3js= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hareshx Sankar Raj , Bolemx Sivanagaleela , Giovanni Cabiddu , Andy Shevchenko , Herbert Xu , Sasha Levin Subject: [PATCH 6.3 408/431] crypto: qat - unmap buffers before free for RSA Date: Sun, 9 Jul 2023 13:15:56 +0200 Message-ID: <20230709111500.750035139@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230709111451.101012554@linuxfoundation.org> References: <20230709111451.101012554@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Hareshx Sankar Raj [ Upstream commit d776b25495f2c71b9dbf1f5e53b642215ba72f3c ] The callback function for RSA frees the memory allocated for the source and destination buffers before unmapping them. This sequence is wrong. Change the cleanup sequence to unmap the buffers before freeing them. Fixes: 3dfaf0071ed7 ("crypto: qat - remove dma_free_coherent() for RSA") Signed-off-by: Hareshx Sankar Raj Co-developed-by: Bolemx Sivanagaleela Signed-off-by: Bolemx Sivanagaleela Reviewed-by: Giovanni Cabiddu Reviewed-by: Andy Shevchenko Signed-off-by: Giovanni Cabiddu Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/qat/qat_common/qat_asym_algs.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c index 8806242469a06..4128200a90329 100644 --- a/drivers/crypto/qat/qat_common/qat_asym_algs.c +++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c @@ -520,12 +520,14 @@ static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp) err = (err == ICP_QAT_FW_COMN_STATUS_FLAG_OK) ? 0 : -EINVAL; - kfree_sensitive(req->src_align); - dma_unmap_single(dev, req->in.rsa.enc.m, req->ctx.rsa->key_sz, DMA_TO_DEVICE); + kfree_sensitive(req->src_align); + areq->dst_len = req->ctx.rsa->key_sz; + dma_unmap_single(dev, req->out.rsa.enc.c, req->ctx.rsa->key_sz, + DMA_FROM_DEVICE); if (req->dst_align) { scatterwalk_map_and_copy(req->dst_align, areq->dst, 0, areq->dst_len, 1); @@ -533,9 +535,6 @@ static void qat_rsa_cb(struct icp_qat_fw_pke_resp *resp) kfree_sensitive(req->dst_align); } - dma_unmap_single(dev, req->out.rsa.enc.c, req->ctx.rsa->key_sz, - DMA_FROM_DEVICE); - dma_unmap_single(dev, req->phy_in, sizeof(struct qat_rsa_input_params), DMA_TO_DEVICE); dma_unmap_single(dev, req->phy_out, -- 2.39.2