From: Eric Paris <eparis@redhat.com>
Date: Tue, 23 Nov 2010 23:18:37 +0000 (-0500)
Subject: inotify: stop kernel memory leak on file creation failure
X-Git-Tag: firefly_0821_release~9833^2~71^2^2~64
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=51b491044a371635e678255f525117751b09ffb9;p=firefly-linux-kernel-4.4.55.git

inotify: stop kernel memory leak on file creation failure

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@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index bf7f6d776c31..5b7c6fe7fb61 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -751,6 +751,7 @@ 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);