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 301CA253954; Mon, 13 Oct 2025 15:11:06 +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=1760368266; cv=none; b=eWzVTs+IRlozVAUTUpVwLI9SX10kTjiJcECqtG/H9FWrtcdPOHYqidaAedrMUSFzb9PKZmOQGVomooFI5n5AisZ8UjEWyfroxX+u1WwZ4Uh7Op1W70zge0bILEsdDMdB0Tt6/xUR7IZ48ZBTtxHXy9NufJthT4s9ypsa6ot9g7s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760368266; c=relaxed/simple; bh=uXMTvqsI2n/tBXURiBCa5WEMX/rk0DbmwtBSWCgPc5A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VYecrsPyEHC1Ei0bLfXY82Q1vFjXbx1ULqzGQGtMgfyj/ssq/1z0QvqfDH7pU37+1fEoIR9zuqVUuTAevsYHUEIzqL5TGsbqKE8fegupSwyd+enUHbPGFJVSTqyxpRUun1IYq21d9ny3dvsPLBb8Xg4qBaz+KW3iuCosIVruFpg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VsUu80ii; 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="VsUu80ii" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B0827C4CEE7; Mon, 13 Oct 2025 15:11:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760368266; bh=uXMTvqsI2n/tBXURiBCa5WEMX/rk0DbmwtBSWCgPc5A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VsUu80ii8fO1iwqi7Lkk5bPbmutagabHH+z2guBmd/2nriXlufjl2QNL4UJPrcN3L cjUWtV9vdNVE2P1GF0Fchr014NDKfeZ8NmtE8iQa0ZPhhv55Ab/YKFIEwaNq6QEn2o oiIBqHZr0GH18s/GbaZR+p2ftVvjmo2fuva3X2O8= 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 6.12 100/262] crypto: keembay - Add missing check after sg_nents_for_len() Date: Mon, 13 Oct 2025 16:44:02 +0200 Message-ID: <20251013144329.732448155@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144326.116493600@linuxfoundation.org> References: <20251013144326.116493600@linuxfoundation.org> User-Agent: quilt/0.69 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 4e53be21dd0315c00eaf40cc8f8c0facd4d9a6b2 ] sg_nents_for_len() returns an int which is negative in case of error. 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 | 5 ++++- 1 file changed, 4 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 fdeca861933cb..903f31dc663e9 100644 --- a/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c +++ b/drivers/crypto/intel/keembay/keembay-ocs-hcu-core.c @@ -232,7 +232,7 @@ static int kmb_ocs_dma_prepare(struct ahash_request *req) struct device *dev = rctx->hcu_dev->dev; unsigned int remainder = 0; unsigned int total; - size_t nents; + int nents; size_t count; int rc; int i; @@ -253,6 +253,9 @@ static int kmb_ocs_dma_prepare(struct ahash_request *req) /* Determine the number of scatter gather list entries to process. */ nents = sg_nents_for_len(req->src, rctx->sg_data_total - remainder); + if (nents < 0) + return nents; + /* If there are entries to process, map them. */ if (nents) { rctx->sg_dma_nents = dma_map_sg(dev, req->src, nents, -- 2.51.0