Merge tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs (4e785e8d) · Commits · 戴 / test

Pull configfs update from Christoph Hellwig: - a fix for an error path use after free (YueHaibing) * tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs: configfs: fix possible use-after-free in configfs_register_group

fs/configfs/dir.c

+12 −5

Original line number	Diff line number	Diff line
		@@ -1757,12 +1757,19 @@ int configfs_register_group(struct config_group *parent_group,

		inode_lock_nested(d_inode(parent), I_MUTEX_PARENT);
		ret = create_default_group(parent_group, group);
		if (!ret) {
		if (ret)
		goto err_out;

		spin_lock(&configfs_dirent_lock);
		configfs_dir_set_ready(group->cg_item.ci_dentry->d_fsdata);
		spin_unlock(&configfs_dirent_lock);
		}
		inode_unlock(d_inode(parent));
		return 0;
		err_out:
		inode_unlock(d_inode(parent));
		mutex_lock(&subsys->su_mutex);
		unlink_group(group);
		mutex_unlock(&subsys->su_mutex);
		return ret;
		}
		EXPORT_SYMBOL(configfs_register_group);

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