linux-kernel - [038/116] mqueue: fix mq_open() file descriptor leak on user-space processes

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Date:	Tue, 30 Mar 2010 15:55:16 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	AndrÃ© Goddard Rosa 
	<andre.goddard@...il.com>, Al Viro <viro@...iv.linux.org.uk>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [038/116] mqueue: fix mq_open() file descriptor leak on user-space processes

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: André Goddard Rosa <andre.goddard@...il.com>

commit 4294a8eedb17bbc45e1e7447c2a4d05332943248 upstream.

We leak fd on lookup_one_len() failure

Signed-off-by: André Goddard Rosa <andre.goddard@...il.com>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 ipc/mqueue.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -706,7 +706,7 @@ SYSCALL_DEFINE4(mq_open, const char __us
 	dentry = lookup_one_len(name, ipc_ns->mq_mnt->mnt_root, strlen(name));
 	if (IS_ERR(dentry)) {
 		error = PTR_ERR(dentry);
-		goto out_err;
+		goto out_putfd;
 	}
 	mntget(ipc_ns->mq_mnt);
 
@@ -744,7 +744,6 @@ out:
 	mntput(ipc_ns->mq_mnt);
 out_putfd:
 	put_unused_fd(fd);
-out_err:
 	fd = error;
 out_upsem:
 	mutex_unlock(&ipc_ns->mq_mnt->mnt_root->d_inode->i_mutex);


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