From patchwork Fri Dec 16 13:32:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Colin Ian King X-Patchwork-Id: 706442 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3tgBBl0mDrz9t2b for ; Sat, 17 Dec 2016 00:35:11 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1cHsdv-0005wy-Nl; Fri, 16 Dec 2016 13:33:47 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1cHsds-0005hN-Mn for linux-mtd@lists.infradead.org; Fri, 16 Dec 2016 13:33:45 +0000 Received: from 1.general.cking.uk.vpn ([10.172.193.212] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.76) (envelope-from ) id 1cHsdR-0005Za-B1; Fri, 16 Dec 2016 13:33:17 +0000 From: Colin King To: Richard Weinberger , Artem Bityutskiy , Adrian Hunter , linux-mtd@lists.infradead.org Subject: [PATCH] ubifs: ensure zero err is returned on successful return Date: Fri, 16 Dec 2016 13:32:39 +0000 Message-Id: <20161216133239.21547-1-colin.king@canonical.com> X-Mailer: git-send-email 2.10.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161216_053344_969369_6EA27E44 X-CRM114-Status: UNSURE ( 8.08 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.6 (-----) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-5.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [91.189.89.112 listed in list.dnswl.org] -1.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Colin Ian King err is no longer being set on a successful return path, causing a garbage value being returned. Fix this by setting err to zero for the successful return path. Found with static analysis by CoverityScan, CID 1389473 Fixes: 7799953b34d18 ("ubifs: Implement encrypt/decrypt for all IO") Signed-off-by: Colin Ian King --- fs/ubifs/journal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c index a459211..b75f1a6 100644 --- a/fs/ubifs/journal.c +++ b/fs/ubifs/journal.c @@ -1319,6 +1319,7 @@ static int truncate_data_node(const struct ubifs_info *c, const struct inode *in dn->compr_type = cpu_to_le16(compr_type); dn->size = cpu_to_le32(*new_len); *new_len = UBIFS_DATA_NODE_SZ + out_len; + err = 0; out: kfree(buf); return err;