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From: Daeseok Youn <daeseok.youn@gmail.com>
To: martyn.welch@ge.com, manohar.vanga@gmail.com, gregkh@linuxfoundation.org
Cc: asierra@xes-inc.com, lisa@xenapiadmin.com,
	yongjun_wei@trendmicro.com.cn, devel@driverdev.osuosl.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] staging: vme: fix memory leak in vme_user_probe()
Date: Wed, 26 Mar 2014 12:01:48 +0900	[thread overview]
Message-ID: <3217679.sqG7Yrhs8H@daeseok-laptop.cloud.net> (raw)


If vme_master_request() returns NULL when it failed,
it need to free buffers for master.

And also removes unreachable code in vme_user_probe().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
---
 drivers/staging/vme/devices/vme_user.c |    9 +++------
 1 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/vme/devices/vme_user.c b/drivers/staging/vme/devices/vme_user.c
index 7927927..ffb4eee 100644
--- a/drivers/staging/vme/devices/vme_user.c
+++ b/drivers/staging/vme/devices/vme_user.c
@@ -776,7 +776,8 @@ static int vme_user_probe(struct vme_dev *vdev)
 		image[i].kern_buf = kmalloc(image[i].size_buf, GFP_KERNEL);
 		if (image[i].kern_buf == NULL) {
 			err = -ENOMEM;
-			goto err_master_buf;
+			vme_master_free(image[i].resource);
+			goto err_master;
 		}
 	}
 
@@ -819,8 +820,6 @@ static int vme_user_probe(struct vme_dev *vdev)
 
 	return 0;
 
-	/* Ensure counter set correcty to destroy all sysfs devices */
-	i = VME_DEVS;
 err_sysfs:
 	while (i > 0) {
 		i--;
@@ -830,12 +829,10 @@ err_sysfs:
 
 	/* Ensure counter set correcty to unalloc all master windows */
 	i = MASTER_MAX + 1;
-err_master_buf:
-	for (i = MASTER_MINOR; i < (MASTER_MAX + 1); i++)
-		kfree(image[i].kern_buf);
 err_master:
 	while (i > MASTER_MINOR) {
 		i--;
+		kfree(image[i].kern_buf);
 		vme_master_free(image[i].resource);
 	}
 
-- 
1.7.4.4



             reply	other threads:[~2014-03-26  3:01 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-26  3:01 Daeseok Youn [this message]
2014-03-26 18:51 ` Aaron Sierra
2014-03-27  1:47   ` DaeSeok Youn
2014-03-27 14:30     ` Aaron Sierra
2014-03-27 23:53       ` DaeSeok Youn

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