From patchwork Wed Jan 3 13:35:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gilad Ben-Yossef X-Patchwork-Id: 123312 Delivered-To: patch@linaro.org Received: by 10.140.22.227 with SMTP id 90csp10182430qgn; Wed, 3 Jan 2018 05:38:46 -0800 (PST) X-Google-Smtp-Source: ACJfBov6ANjIzX3ItVydS0c5uvX/o95s7M2lkb6raogRBHdbqoySR1ImhWWRAyD293hr5RR1W5YX X-Received: by 10.159.235.132 with SMTP id f4mr1454219plr.122.1514986725943; Wed, 03 Jan 2018 05:38:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1514986725; cv=none; d=google.com; s=arc-20160816; b=xBBcchLvVLADUWtRXHyIR575TCQgH9TB2Neq7LAVCTPdrDocMcOcOQSSMJi1qSpwec 6M2ou6Pjs6jLzlBD13d9v+6DayE2q3/2A0CYAAqDytFHo6mkOg2HSWDtIBpZRL9ebq+o VY/0aIGGuuXGG3ItdeFfu60t0ib8+DStxjKKchyfaJFMbjtACU5QUdjDYn6aL1PNi+MC EgUhPkaGvWdikX4n5W8Q4M2r9aNhCq1/Isa5y0i2HzROAhUsHvuKNSyotKdbjemaB7H1 N4sSIf8ozVvJY8wfMhLUyLpestDivkqvOhV77gORsaGysucKMVQKgQXHG+CCNoyuSEMg 4grw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=/cn+dhz0fVbZoifcX6Ya2sozgkPZs9GKxfsICBsNzUU=; b=fRmSuyAPF90hfRe9YXVRauiKayeVoC0hVHYlAvb+/QgOFskg8y46NWPT4abUR3+vKr 8w21T1D7Injw6yPYdweVj7aNTqFQJMp/CUe3Lr0SBGPk+ElLKPAZ9Bs6+0/dAPcyS8OM SohCaH4WL3RxnX5v9xhoKSDCv5lfcsnjPBUBqcIpvkiJKA3EgzI9taKgfHAq0ic71deU V9nSrS+DkZ0vNNYjzyNs2omT/MJ9EEQ4fQwi8ljBffiCqbW/OBEThK1gnUiqp6OZGM9+ qQIZbBqLnKGbzY2o9NTuvi1aqg2gJFv40Q5lv6u8tM+7B/Q6WEM8ccEutHi1IsMKHM5s Bvlw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p123si634086pga.747.2018.01.03.05.38.45; Wed, 03 Jan 2018 05:38:45 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753116AbeACNim (ORCPT + 28 others); Wed, 3 Jan 2018 08:38:42 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:50142 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752441AbeACNik (ORCPT ); Wed, 3 Jan 2018 08:38:40 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 09C2F1529; Wed, 3 Jan 2018 05:38:40 -0800 (PST) Received: from sugar.kfn.arm.com (unknown [10.45.48.137]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4AAAF3F24A; Wed, 3 Jan 2018 05:38:38 -0800 (PST) From: Gilad Ben-Yossef To: Greg Kroah-Hartman Cc: Ofir Drang , stable@vger.kernel.org, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, driverdev-devel@linuxdriverproject.org, devel@driverdev.osuosl.org Subject: [PATCH v2 14/27] staging: ccree: handle end of sg list gracefully Date: Wed, 3 Jan 2018 13:35:21 +0000 Message-Id: <1514986544-5888-15-git-send-email-gilad@benyossef.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1514986544-5888-1-git-send-email-gilad@benyossef.com> References: <1514986544-5888-1-git-send-email-gilad@benyossef.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If we are asked for number of entries of an offset bigger than the sg list we should not crash. Cc: stable@vger.kernel.org Signed-off-by: Gilad Ben-Yossef --- drivers/staging/ccree/ssi_buffer_mgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.7.4 diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c index 13cb062..9e3f557 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.c +++ b/drivers/staging/ccree/ssi_buffer_mgr.c @@ -94,7 +94,7 @@ static unsigned int cc_get_sgl_nents(struct device *dev, { unsigned int nents = 0; - while (nbytes) { + while (nbytes && sg_list) { if (sg_list->length) { nents++; /* get the number of bytes in the last entry */