linux-kernel - [v2.6.34-stable 16/77] inotify: stop kernel memory leak on file creation failure

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Message-ID: <1357688156-25387-17-git-send-email-paul.gortmaker@windriver.com>
Date:	Tue, 8 Jan 2013 18:34:55 -0500
From:	Paul Gortmaker <paul.gortmaker@...driver.com>
To:	<stable@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	Eric Paris <eparis@...hat.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>
Subject: [v2.6.34-stable 16/77] inotify: stop kernel memory leak on file creation failure

From: Eric Paris <eparis@...hat.com>

                   -------------------
    This is a commit scheduled for the next v2.6.34 longterm release.
    http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
    If you see a problem with using this for longterm, please comment.
                   -------------------

commit a2ae4cc9a16e211c8a128ba10d22a85431f093ab upstream.

If inotify_init is unable to allocate a new file for the new inotify
group we leak the new group.  This patch drops the reference on the
group on file allocation failure.

Reported-by: Vegard Nossum <vegard.nossum@...il.com>
Signed-off-by: Eric Paris <eparis@...hat.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
---
 fs/notify/inotify/inotify_user.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 0c6bbc0..72f8825 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -674,6 +674,7 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
 	if (ret >= 0)
 		return ret;
 
+	fsnotify_put_group(group);
 	atomic_dec(&user->inotify_devs);
 out_free_uid:
 	free_uid(user);
-- 
1.7.12.1

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