bin/49023: rcp(1) hangs in rcmd(1)

[Takeshi Nakayama <nakayama%NetBSD.org@localhost>]

>Number:         49023
>Category:       bin
>Synopsis:       rcp(1) hangs in rcmd(1)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 19 22:35:00 +0000 2014
>Originator:     Takeshi Nakayama
>Release:        NetBSD 6.99.47
>Organization:
Private
>Environment:
System: NetBSD lethe 6.99.47 NetBSD 6.99.47 (LETHE) #218:
 Sun Jul 20 05:35:18 JST 2014 takeshi@lethe:/sys/arch/i386/compile/LETHE i386
Architecture: i386
Machine: i386
>Description:
When copying files from/to remote host with rcp(1), it hangs and
doesn't complete.

>How-To-Repeat:

pts/0% rcp -p /etc/motd nyx:/tmp
(hang)

(see processes from other terminal)
pts/1% ps
  PID TTY   STAT    TIME COMMAND
   34 pts/0 Is   0:00.05 zsh 
11768 pts/0 I+   0:00.00 rcmd -l takeshi nyx rcp -p -t /tmp 
12014 pts/0 S+   0:00.00 rcmd -l takeshi nyx rcp -p -t /tmp 
15726 pts/0 I+   0:00.00 rcp -p /etc/motd nyx 
14863 pts/1 O+   0:00.00 ps 
20244 pts/1 Ss   0:00.02 zsh 

>Fix:
Reverting revision 1.36 of src/usr.bin/rsh/rsh.c temporary fixes
the problem.