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;
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Colin Ian King <colin.king@canonical.com>,
        Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 012/118] test_firmware: fix error return getting clobbered
Date:   Tue, 11 Dec 2018 16:40:31 +0100
Message-Id: <20181211151644.726352191@linuxfoundation.org>
In-Reply-To: <20181211151644.216668863@linuxfoundation.org>
References: <20181211151644.216668863@linuxfoundation.org>
User-Agent: quilt/0.65
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit 8bb0a88600f0267cfcc245d34f8c4abe8c282713 ]

In the case where eq->fw->size > PAGE_SIZE the error return rc
is being set to EINVAL however this is being overwritten to
rc = req->fw->size because the error exit path via label 'out' is
not being taken.  Fix this by adding the jump to the error exit
path 'out'.

Detected by CoverityScan, CID#1453465 ("Unused value")

Fixes: c92316bf8e94 ("test_firmware: add batched firmware tests")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 lib/test_firmware.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index b984806d7d7b..7cab9a9869ac 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -837,6 +837,7 @@ static ssize_t read_firmware_show(struct device *dev,
 	if (req->fw->size > PAGE_SIZE) {
 		pr_err("Testing interface must use PAGE_SIZE firmware for now\n");
 		rc = -EINVAL;
+		goto out;
 	}
 	memcpy(buf, req->fw->data, req->fw->size);
 
-- 
2.19.1