From: Al Viro <viro@zeniv.linux.org.uk>
Date: Fri, 9 May 2025 03:38:01 +0000 (-0400)
Subject: securityfs: don't pin dentries twice, once is enough...
X-Git-Tag: v6.12.43~349
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a24ed0e8ce7d6213c9a73f86e1f45b41693160df;p=thirdparty%2Fkernel%2Fstable.git

securityfs: don't pin dentries twice, once is enough...

[ Upstream commit 27cd1bf1240d482e4f02ca4f9812e748f3106e4f ]

incidentally, securityfs_recursive_remove() is broken without that -
it leaks dentries, since simple_recursive_removal() does not expect
anything of that sort.  It could be worked around by dput() in
remove_one() callback, but it's easier to just drop that double-get
stuff.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/security/inode.c b/security/inode.c
index da3ab44c8e571..58cc60c50498d 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -159,7 +159,6 @@ static struct dentry *securityfs_create_dentry(const char *name, umode_t mode,
 		inode->i_fop = fops;
 	}
 	d_instantiate(dentry, inode);
-	dget(dentry);
 	inode_unlock(dir);
 	return dentry;
 
@@ -306,7 +305,6 @@ void securityfs_remove(struct dentry *dentry)
 			simple_rmdir(dir, dentry);
 		else
 			simple_unlink(dir, dentry);
-		dput(dentry);
 	}
 	inode_unlock(dir);
 	simple_release_fs(&mount, &mount_count);