linux-kernel - [PATCH] uio: uio_pruss: Fix potential NULL pointer dereference

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Date:	Thu,  6 Jun 2013 15:55:28 +0200
From:	Emil Goode <emilgoode@...il.com>
To:	hjk@...sjkoch.de, gregkh@...uxfoundation.org
Cc:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Emil Goode <emilgoode@...il.com>
Subject: [PATCH] uio: uio_pruss: Fix potential NULL pointer dereference

In function pruss_probe we free gdev and try to use
it on the next line. I have moved the dereference to
above the kfree of gdev.

Signed-off-by: Emil Goode <emilgoode@...il.com>
---
 drivers/uio/uio_pruss.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/uio/uio_pruss.c b/drivers/uio/uio_pruss.c
index 6e2ab00..21f7a72 100644
--- a/drivers/uio/uio_pruss.c
+++ b/drivers/uio/uio_pruss.c
@@ -136,9 +136,9 @@ static int pruss_probe(struct platform_device *dev)
 	gdev->pruss_clk = clk_get(&dev->dev, "pruss");
 	if (IS_ERR(gdev->pruss_clk)) {
 		dev_err(&dev->dev, "Failed to get clock\n");
+		ret = PTR_ERR(gdev->pruss_clk);
 		kfree(gdev->info);
 		kfree(gdev);
-		ret = PTR_ERR(gdev->pruss_clk);
 		return ret;
 	} else {
 		clk_enable(gdev->pruss_clk);
-- 
1.7.10.4

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