kern/55338: rump threxec test broken

[martin%NetBSD.org@localhost]

>Number:         55338
>Category:       kern
>Synopsis:       rump threxec test broken
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jun 02 15:40:00 +0000 2020
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.64
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 9.99.64 NetBSD 9.99.64 (GENERIC) #83: Tue Jun 2 14:51:23 CEST 2020 martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/evbarm/compile/GENERIC evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:

After updating to todays -current on this machine (this is a CubieTruck,
dmesg at: https://netbsd.org/~martin/evbearmv7hf-atf/dmesg.txt)
atf tests hang here:

lib/librumpclient/t_exec (442/847): 5 test cases
    cloexec: [1.106553s] Passed.
    exec: [1.120590s] Passed.
    noexec: [1.108296s] Passed.
    threxec: 

... indefinitely untill the rump_server process is killed with -9.


>How-To-Repeat:

Not sure:	cd /usr/test/lib/librumpclient && atf-run t_exec

>Fix:
n/a