port-vax/41139: pipe(2) seems broken on VAX

[tsutsui%ceres.dti.ne.jp@localhost]

>Number:         41139
>Category:       port-vax
>Synopsis:       pipe(2) seems broken on VAX
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-vax-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 04 13:25:00 +0000 2009
>Originator:     Izumi Tsutsui
>Release:        NetBSD 5.0_RC3
>Organization:
>Environment:
System: NetBSD 5.0_RC3 (GENERIC) #0: Fri Apr  3 08:50:02 UTC 2009  \
builds%b6.netbsd.org@localhost:/home/builds/ab/netbsd-5/vax/200904020000Z-obj/\
home/builds/ab/netbsd-5/src/sys/arch/vax/compile/GENERIC vax
Architecture: vax
Machine: vax
Running on simh-vax
>Description:
pipe(2) seems broken on vax.
"tar xzvf /tmp/bast.tgz" causes the following error
---
# tar xzpf base.tgz
tar: Cannot identify format. Searching...
---
as noted in this thread:
http://mail-index.NetBSD.org/port-vax/2009/03/31/msg000641.html

5.0_RC1 and -current GENERIC kernels have the same problem.

>How-To-Repeat:
Install NetBSD/vax 5.0_RC3 onto simh, then try the following command:

---
 :
NetBSD 5.0_RC3 (GENERIC) #0: Fri Apr 3 08:50:02 UTC 2009

Welcome to NetBSD!
 :
Terminal type? [unknown] 
Terminal type is unknown.
We recommend creating a non-root account and using su(1) for root access.
# gzip -c /netbsd > /tmp/test
# gunzip -t < /tmp/test
# gzip -c /netbsd | gunzip -t
gunzip: unknown compression format
# 
---

5.0_RC1 GENERIC says:

---
 :
NetBSD 5.0_RC1 (GENERIC) #0: Wed Jan 28 14:22:28 PST 2009

Welcome to NetBSD!
 :
Terminal type? [unknown] 
Terminal type is unknown.
We recommend creating a non-root account and using su(1) for root access.
# gzip -c /netbsd > /tmp/test
# gunzip -t < /tmp/test
# gzip -c /netbsd | gunzip -t
gunzip: data stream error
# 
---       

>Fix:
Unknown, but GENERIC kernel compiled with "options PIPE_SOCKETPAIR"
works fine.
(so INSTALL kernel doesn't have the problem on extracting binary sets)

---
Izumi Tsutsui