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 9627311706 for ; Mon, 11 Sep 2023 14:59:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 15D60C433C7; Mon, 11 Sep 2023 14:59:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694444383; bh=Q2iiDv4pBmYHnY68pFdnb+lGC4oC45tZWZIYTMAbmcs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=o0xcbAdUeZLg4XvUoB9FVkxvEd8AvUI5foEEPaxdlQtJibY47tlx1PXvUbKR1/SWU wyRTmf6BdZ9h2jq4za/5pw64VFKsdpNf7j8+M8Tb8yrOmXtYM5i8WKTJP8RG+e9XLh tWgw0UmL3lmtOXPoCmVW1XhSho43w/obJ6niduak= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Bourgoin , Herbert Xu Subject: [PATCH 6.4 711/737] crypto: stm32 - fix loop iterating through scatterlist for DMA Date: Mon, 11 Sep 2023 15:49:30 +0200 Message-ID: <20230911134710.383439975@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.286315610@linuxfoundation.org> References: <20230911134650.286315610@linuxfoundation.org> User-Agent: quilt/0.67 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 6.4-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 @@ -627,9 +627,9 @@ 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);