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 E87BB2F5E; Tue, 12 Aug 2025 18:17:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755022622; cv=none; b=nShjKgBkaC7NuLrV5Llq2Nuwyj5gYXM+HM/O+bBJmYm3BrFWFwxud2evLV7yiJRgQx8ZPysPe4eNhWmToApQesnUvwr8uqc9csVlBMLhShZ7tRQLFBgsM2ULYE7zRCu2VglGjg8Yvjn5vO9hOu+zyqowoe6H5z1uYt+4RkvuBnA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755022622; c=relaxed/simple; bh=ttZmpxW7LtnJwe1cjkPtnLA6wFwb0wSMpValMHPl7sw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DIe9Lx1BWslInAh7J5QVGG5r66W3ltzsJdSrXd3hwWK8R0QxWMWWhaV1Ifmh6W1FFfpRr21GCMOWfRQCMQRe1nqizvp2VdIP98AZqHgK/TXahhPsejvo56RQeKqr3MNktJmVWflwg1Gj1wJc/uFEhRTxxcbjCrbDvjryDYBXOLQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=vrDvhGLb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="vrDvhGLb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5576CC4CEF0; Tue, 12 Aug 2025 18:17:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755022621; bh=ttZmpxW7LtnJwe1cjkPtnLA6wFwb0wSMpValMHPl7sw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vrDvhGLbzqb1wuBQrKhsf2NEE16kt57na1TdOPT80DUj0z5NlihrONqYRf0Zweb01 ea+bczonRarQq6Edm8wa/JaZF2kucnN4Po0AmmznOPvZR1sDxpexszKUlqg1DvALTi Lttlubwgsmq3lzz9MaCVuAZ9pD5XmaQ90eoqqojY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Herbert Xu , Sasha Levin Subject: [PATCH 6.12 208/369] crypto: keembay - Fix dma_unmap_sg() nents value Date: Tue, 12 Aug 2025 19:28:25 +0200 Message-ID: <20250812173022.585640330@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250812173014.736537091@linuxfoundation.org> References: <20250812173014.736537091@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier [ Upstream commit 01951a7dc5ac1a37e5fb7d86ea7eb2dfbf96e8b6 ] The dma_unmap_sg() functions should be called with the same nents as the dma_map_sg(), not the value the map function returned. Fixes: 472b04444cd3 ("crypto: keembay - Add Keem Bay OCS HCU driver") Signed-off-by: Thomas Fourier Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c b/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c index e54c79890d44..fdeca861933c 100644 --- a/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c +++ b/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c @@ -68,6 +68,7 @@ struct ocs_hcu_ctx { * @sg_data_total: Total data in the SG list at any time. * @sg_data_offset: Offset into the data of the current individual SG node. * @sg_dma_nents: Number of sg entries mapped in dma_list. + * @nents: Number of entries in the scatterlist. */ struct ocs_hcu_rctx { struct ocs_hcu_dev *hcu_dev; @@ -91,6 +92,7 @@ struct ocs_hcu_rctx { unsigned int sg_data_total; unsigned int sg_data_offset; unsigned int sg_dma_nents; + unsigned int nents; }; /** @@ -199,7 +201,7 @@ static void kmb_ocs_hcu_dma_cleanup(struct ahash_request *req, /* Unmap req->src (if mapped). */ if (rctx->sg_dma_nents) { - dma_unmap_sg(dev, req->src, rctx->sg_dma_nents, DMA_TO_DEVICE); + dma_unmap_sg(dev, req->src, rctx->nents, DMA_TO_DEVICE); rctx->sg_dma_nents = 0; } @@ -260,6 +262,10 @@ static int kmb_ocs_dma_prepare(struct ahash_request *req) rc = -ENOMEM; goto cleanup; } + + /* Save the value of nents to pass to dma_unmap_sg. */ + rctx->nents = nents; + /* * The value returned by dma_map_sg() can be < nents; so update * nents accordingly. -- 2.39.5