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Description of problem:
I run Fedora 8 64bit and also tested on RH-ES-R3 with kernel 2.4.21-15.ELsmp on an i386. A select() call would return indicating a file descriptor is ready for reading if I had only one file descriptor and it is for a listening socket.

Create a server socket (socket())
Bind to localhost and port (bind())
Do select() for reading on socket (instead of listen())
select() returns immediately even when no process tries to connect to it.
listen() would wait until a connection request comes in. The error fd set does not indicate an error.

If using poll() instead of select(), poll() also returns immediately but revents indicate POLLHUP is set.

Solaris works properly on the select().

Version-Release number of selected component (if applicable):


How reproducible:
Always


Steps to Reproduce:
1. sin.sin_family = AF_INET;
   sin.sin_addr.s_addr = inet_addr("127.0.0.1");
   sin.sin_port = htons(22222);
   tv.tv_sec = 60;
   tv.tv_usec = 0;

2. s = socket( AF_INET, SOCK_STREAM, 0 )
3. FD_ZERO( &rdset );
   FD_ZERO( &errset );
   FD_SET( s, &rdset );
   FD_SET( s, &errset );
4. bind( s, (struct sockaddr*) &sin, sizeof(sin))
5. n = select( nfds, &rdset, NULL, &errset, &tv ))
6. FD_ISSET( s, &rdset )
7. listen( s, 6 )

select() returns 1 immediately with FD_ISSET(s, &rdset)being true even when no process tries to connect to it. A listen(s,6) would wait until a connect comes in.



Actual Results:
Select() returns immediately indicating socket reading for reading and error fd set does not indicate an error.

Poll() returns immediately indicating POLLHUP in revents.

Expected Results:
With listening sockets, select() should only return when there is an inbound connection request (when listen() would return with connection indication).

Poll() should return when there is an inbound connection request. Why did it return with POLLHUP anyway?

Additional info: