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 AAB8930ACF8; Mon, 13 Oct 2025 15:01:50 +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=1760367710; cv=none; b=ddJsZcWfQMM2gtppa+04nT8CQS+kUgJhRkVH5mHJ6AtP/jpNJPqmA+GVxE2Pt64V2VDH/9RNm02yY+6O6S7urjG+gVpCjGsKtk8sZviNnn1TcifgxBBQ0qFum3Qd7j+fqN9ROSYJMreWqq1pH67x10aLMl9dYGhJrSTM4WtSAyg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367710; c=relaxed/simple; bh=SkEMIjjaBoH2/etsIEx0CHFH3rTCDRcOxvVmtpQNwDo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=adjF0MfFrfEiEPR3MXPlc+aDWx6Z6ur1CAvX0yn7OV7l3QCVdQO07/rStw5ae4rW649PGyHAsEauY3kmmH9jnApY8BcbsI99zh0fUvO5Zb8IgXuxo7cnDQu92hLKyo0gflLvbieTneUYCazyFel9ZIOGHzJ1wuIm9rm2lZmvO5M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ErlTGxRo; 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="ErlTGxRo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C6BEC4CEE7; Mon, 13 Oct 2025 15:01:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760367710; bh=SkEMIjjaBoH2/etsIEx0CHFH3rTCDRcOxvVmtpQNwDo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ErlTGxRoNyrp6DuxKEQu5xG5HXXD09UClEUFFq9hpPPjZXIgEf/QiHx9YcYy7ubeN kardLurm0Xl/RKH0aaNN0PYDkDFIL4w/Nn8QK3k26Y5aOn8qRy0gRMCHlo9cjumbgu vKUMquj8jYCCoMNOmt9l2CsnRN+RCI080Medwm5g= 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 6.6 072/196] crypto: keembay - Add missing check after sg_nents_for_len() Date: Mon, 13 Oct 2025 16:44:23 +0200 Message-ID: <20251013144317.796284023@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144315.184275491@linuxfoundation.org> References: <20251013144315.184275491@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 6.6-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 b732223035399..3b5d5b64e1414 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