[Lguest] [PATCH] Fix a memory leak with the lg object during launcher close

[Mark Wallis]

From: Mark Wallis <mwallis at serialmonkey.com>

Fix a memory leak identified by Rusty Russell during LCA09 by
kfree'ing the lg object instead of just clearing it when the
launcher closes.

Signed-off-by: Mark Wallis <mwallis at serialmonkey.com>
---
 drivers/lguest/lguest_user.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/lguest/lguest_user.c b/drivers/lguest/lguest_user.c
index 34bc017..b8ee103 100644
--- a/drivers/lguest/lguest_user.c
+++ b/drivers/lguest/lguest_user.c
@@ -307,9 +307,8 @@ static int close(struct inode *inode, struct file *file)
 	 * kmalloc()ed string, either of which is ok to hand to kfree(). */
 	if (!IS_ERR(lg->dead))
 		kfree(lg->dead);
-	/* We clear the entire structure, which also marks it as free for the
-	 * next user. */
-	memset(lg, 0, sizeof(*lg));
+	/* Free the memory allocated to the lguest_struct */
+	kfree(lg);
 	/* Release lock and exit. */
 	mutex_unlock(&lguest_lock);
 
-- 
1.5.6.3