bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext)
{
	bool ret =  __f2fs_init_extent_tree(inode, i_ext);

	if (!F2FS_I(inode)->extent_tree)
		set_inode_flag(inode, FI_NO_EXTENT);

	return ret;
}
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.