openssh unix dev - Mar 2010 - sshd version OpenSSH_5.4p1 fails on OpenBSD 4.2 GENERIC macppc

Because OpenSSH_5.4 doesn't build on my OpenBSD 4.2 box, I tried 
OpenSSH_5.4p1 which builds and installs fine.

After starting server with sudo /opt/sbin/sshd -p 2222 -d,  my ssh 
client can connect, but the session is closed by server as soon as it is 
started:

[...]
User child is on pid 10318
debug1: Entering interactive session for SSH2.
debug1: server_init_dispatch_20
debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max 
16384
debug1: input_session_request
debug1: channel 0: new [server-session]
debug1: session_new: session 0
debug1: session_open: channel 0
debug1: session_open: session 0: link with channel 0
debug1: server_input_channel_open: confirm session
debug1: server_input_global_request: rtype no-more-sessions at openssh.com 
want_reply 0
debug1: server_input_channel_req: channel 0 request pty-req reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req pty-req
debug1: Allocating pty.
debug1: session_new: session 0
mm_send_fd: sendmsg(7): Invalid argument
mm_answer_pty: send fds failed
debug1: do_cleanup
debug1: session_pty_cleanup: session 0 release /dev/ttyp2

I acknowledge that OpenSSH_5.4p1 is for every thing but OpenBSD and that 
I'd better upgrade to last OpenBSD version.

Ph.L.

On Tue, 9 Mar 2010, Philippe Lel?dy wrote:
> Because OpenSSH_5.4 doesn't build on my OpenBSD 4.2 box, I tried
OpenSSH_5.4p1
> which builds and installs fine.
> 
> After starting server with sudo /opt/sbin/sshd -p 2222 -d,  my ssh client
can
> connect, but the session is closed by server as soon as it is started:
> 
> [...]
> User child is on pid 10318
> debug1: Entering interactive session for SSH2.
> debug1: server_init_dispatch_20
> debug1: server_input_channel_open: ctype session rchan 0 win 1048576 max
16384
> debug1: input_session_request
> debug1: channel 0: new [server-session]
> debug1: session_new: session 0
> debug1: session_open: channel 0
> debug1: session_open: session 0: link with channel 0
> debug1: server_input_channel_open: confirm session
> debug1: server_input_global_request: rtype no-more-sessions at openssh.com
> want_reply 0
> debug1: server_input_channel_req: channel 0 request pty-req reply 1
> debug1: session_by_channel: session 0 channel 0
> debug1: session_input_channel_req: session 0 req pty-req
> debug1: Allocating pty.
> debug1: session_new: session 0
> mm_send_fd: sendmsg(7): Invalid argument
> mm_answer_pty: send fds failed
Older OpenBSD have a kernel bug in fd passing, you might try this patch
to work around it:

ftp://ftp.openbsd.org/pub/OpenBSD/OpenSSH/openbsd43_4.9.patch

-d