linux-kernel - [PATCH] Staging: comedi: fix memory leak in comedi

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Date:	Fri,  7 Feb 2014 23:02:27 -0600
From:	Chase Southwood <chase.southwood@...oo.com>
To:	gregkh@...uxfoundation.org
Cc:	abbotti@....co.uk, hsweeten@...ionengravers.com,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	Chase Southwood <chase.southwood@...oo.com>
Subject: [PATCH] Staging: comedi: fix memory leak in comedi_bond.c

We allocate bdev and then krealloc the devs pointer in order to add bdev
at the end of the devpriv->devs array list.  But if for some reason this
krealloc fails, we need to free bdev before returning an error otherwise
this memory is leaked.

Signed-off-by: Chase Southwood <chase.southwood@...oo.com>
---
 drivers/staging/comedi/drivers/comedi_bond.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/comedi/drivers/comedi_bond.c b/drivers/staging/comedi/drivers/comedi_bond.c
index 51a59e5..406aedb 100644
--- a/drivers/staging/comedi/drivers/comedi_bond.c
+++ b/drivers/staging/comedi/drivers/comedi_bond.c
@@ -254,6 +254,7 @@ static int do_dev_config(struct comedi_device *dev, struct comedi_devconfig *it)
 			if (!devs) {
 				dev_err(dev->class_dev,
 					"Could not allocate memory. Out of memory?\n");
+				kfree(bdev);
 				return -ENOMEM;
 			}
 			devpriv->devs = devs;
-- 
1.8.5.3

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