Commit b338cc82 authored by Dan Carpenter's avatar Dan Carpenter Committed by James Morris
Browse files

security: testing the wrong variable in create_by_name() 



There is a typo here.  We should be testing "*dentry" instead of
"dentry".  If "*dentry" is an ERR_PTR, it gets dereferenced in either
mkdir() or create() which would cause an OOPs.

Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
Signed-off-by: default avatarJames Morris <jmorris@namei.org>
parent e134d200

security/inode.c

+2 −2
Original line number Diff line number Diff line
@@ -161,13 +161,13 @@ static int create_by_name(const char *name, mode_t mode, 


	mutex_lock(&parent->d_inode->i_mutex);

	*dentry = lookup_one_len(name, parent, strlen(name));

	if (!IS_ERR(dentry)) {

	if (!IS_ERR(*dentry)) {

		if ((mode & S_IFMT) == S_IFDIR)

			error = mkdir(parent->d_inode, *dentry, mode);

		else

			error = create(parent->d_inode, *dentry, mode);

	} else

		error = PTR_ERR(dentry);

		error = PTR_ERR(*dentry);

	mutex_unlock(&parent->d_inode->i_mutex);



	return error;