909 	fd_set readfds, writefds, errorfds, zerofds;  in sktc_pump_ring_nslots_select()  local
918 	FD_ZERO(&errorfds);  in sktc_pump_ring_nslots_select()
948 			FD_SET(channelfd, &errorfds);  in sktc_pump_ring_nslots_select()
949 			error = select(channelfd + 1, &readfds, &writefds, &errorfds, NULL);  in sktc_pump_ring_nslots_select()
951 			assert(!memcmp(&zerofds, &errorfds, sizeof(zerofds)));  in sktc_pump_ring_nslots_select()
2186 	fd_set readfds, errorfds;  in sktu_utun_fd_rx_burst()  local
2190 	FD_ZERO(&errorfds);  in sktu_utun_fd_rx_burst()
2192 	FD_SET(utun_fd, &errorfds);  in sktu_utun_fd_rx_burst()
2194 	retval = select(utun_fd + 1, &readfds, NULL, &errorfds, &timeout);  in sktu_utun_fd_rx_burst()
2203 	assert(!FD_ISSET(utun_fd, &errorfds));  in sktu_utun_fd_rx_burst()
2236 	fd_set writefds, errorfds;  in sktu_utun_fd_tx_burst()  local
2240 	FD_ZERO(&errorfds);  in sktu_utun_fd_tx_burst()
2242 	FD_SET(utun_fd, &errorfds);  in sktu_utun_fd_tx_burst()
2244 	retval = select(utun_fd + 1, NULL, &writefds, &errorfds, &timeout);  in sktu_utun_fd_tx_burst()
2253 	assert(!FD_ISSET(utun_fd, &errorfds));  in sktu_utun_fd_tx_burst()