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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A644CCE79CF for ; Wed, 20 Sep 2023 12:37:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235915AbjITMhL (ORCPT ); Wed, 20 Sep 2023 08:37:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55032 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235917AbjITMhL (ORCPT ); Wed, 20 Sep 2023 08:37:11 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 65A4FC2 for ; Wed, 20 Sep 2023 05:37:05 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AEF74C433CB; Wed, 20 Sep 2023 12:37:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1695213425; bh=xXmzX8DXdK4TkydRFc4JNe4mnRT9Wfn+UIw7ZZUUEyM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eyNDlCGPyTxqiqNKe5KeI84i8QI/m3h6uonQmoPKDh71i9mLGICLMKXbqQ4Ev9h9z hryoy0vwMsQFPBXP4SoTO7MAie/FY2+iY6XEl/hpifSHt4hc4gRVl0Q7zMb4jndXlu xLtP9+k2iqn8R4qHqeh+HOxlsIZn45nihyqB4TRA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Bourgoin , Herbert Xu Subject: [PATCH 5.4 232/367] crypto: stm32 - fix loop iterating through scatterlist for DMA Date: Wed, 20 Sep 2023 13:30:09 +0200 Message-ID: <20230920112904.583156501@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230920112858.471730572@linuxfoundation.org> References: <20230920112858.471730572@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Bourgoin commit d9c83f71eeceed2cb54bb78be84f2d4055fd9a1f upstream. We were reading the length of the scatterlist sg after copying value of tsg inside. So we are using the size of the previous scatterlist and for the first one we are using an unitialised value. Fix this by copying tsg in sg[0] before reading the size. Fixes : 8a1012d3f2ab ("crypto: stm32 - Support for STM32 HASH module") Cc: stable@vger.kernel.org Signed-off-by: Thomas Bourgoin Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- drivers/crypto/stm32/stm32-hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -562,9 +562,9 @@ static int stm32_hash_dma_send(struct st } for_each_sg(rctx->sg, tsg, rctx->nents, i) { + sg[0] = *tsg; len = sg->length; - sg[0] = *tsg; if (sg_is_last(sg)) { if (hdev->dma_mode == 1) { len = (ALIGN(sg->length, 16) - 16);