smb_ofile_flush(struct smb_request *sr, struct smb_ofile *of)
{
	switch (of->f_ftype) {
	case SMB_FTYPE_DISK:
		if ((of->f_node->flags & NODE_FLAGS_WRITE_THROUGH) == 0)
			(void) smb_fsop_commit(sr, of->f_cr, of->f_node);
		break;
	default:
		break;
	}
}
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.