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lguest: Fix a memory leak with the lg object during launcher close

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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@serialmonkey.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Mark Wallis 2009-01-26 17:32:35 +11:00 committed by Rusty Russell
parent b44d49ab09
commit 05dfdbbd67
1 changed files with 2 additions and 3 deletions
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5
drivers/lguest/lguest_user.c
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@ -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);