For details see: http://sourceware.org/bugzilla/show_bug.cgi?id=5379 Index: glibc-2.20/sunrpc/clnt_udp.c =================================================================== --- glibc-2.20.orig/sunrpc/clnt_udp.c +++ glibc-2.20/sunrpc/clnt_udp.c @@ -308,6 +308,7 @@ clntudp_call (cl, proc, xargs, argsp, xr XDR *xdrs; int outlen = 0; int inlen; + int pollresult; socklen_t fromlen; struct pollfd fd; int milliseconds = (cu->cu_wait.tv_sec * 1000) + @@ -378,37 +379,39 @@ send_again: anyup = 0; for (;;) { - switch (__poll (&fd, 1, milliseconds)) + switch (pollresult = __poll (&fd, 1, milliseconds)) { - case 0: - if (anyup == 0) + case -1: + if (pollresult == 0 || errno == EINTR) { - anyup = is_network_up (cu->cu_sock); - if (!anyup) - return (cu->cu_error.re_status = RPC_CANTRECV); + if (anyup == 0) + { + anyup = is_network_up (cu->cu_sock); + if (!anyup) + return (cu->cu_error.re_status = RPC_CANTRECV); + } + + time_waited.tv_sec += cu->cu_wait.tv_sec; + time_waited.tv_usec += cu->cu_wait.tv_usec; + while (time_waited.tv_usec >= 1000000) + { + time_waited.tv_sec++; + time_waited.tv_usec -= 1000000; + } + if ((time_waited.tv_sec < timeout.tv_sec) || + ((time_waited.tv_sec == timeout.tv_sec) && + (time_waited.tv_usec < timeout.tv_usec))) + { + if (pollresult == 0) + goto send_again; + else + continue; + } + return (cu->cu_error.re_status = RPC_TIMEDOUT); } - time_waited.tv_sec += cu->cu_wait.tv_sec; - time_waited.tv_usec += cu->cu_wait.tv_usec; - while (time_waited.tv_usec >= 1000000) - { - time_waited.tv_sec++; - time_waited.tv_usec -= 1000000; - } - if ((time_waited.tv_sec < timeout.tv_sec) || - ((time_waited.tv_sec == timeout.tv_sec) && - (time_waited.tv_usec < timeout.tv_usec))) - goto send_again; - return (cu->cu_error.re_status = RPC_TIMEDOUT); - - /* - * buggy in other cases because time_waited is not being - * updated. - */ - case -1: - if (errno == EINTR) - continue; + /* errno != EINTR */ cu->cu_error.re_errno = errno; return (cu->cu_error.re_status = RPC_CANTRECV); }