port-evbarm/48738: Upgrade of -current kernel on Raspberry Pi brakes running executables from previous version requiring reinstall

[joachim.thiemnn%gmail.com@localhost]

>Number:         48738
>Category:       port-evbarm
>Synopsis:       Upgrade of -current kernel on Raspberry Pi brakes running 
>executables from previous version requiring reinstall
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-evbarm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Apr 12 10:15:00 +0000 2014
>Originator:     Joachim Thiemann
>Release:        6.99.40
>Organization:
Carl-von-Ossietzky University Oldenburg
>Environment:
NetBSD rpi 6.99.40 NetBSD 6.99.40 (RPI) #3: Thu Apr 10 14:59:51 CEST 2014  
srcr@virt:/usr/obj/sys/arch/evbarm/compile/RPI evbarm
>Description:
Booting with a new kernel (6.99.38 or so; exact version unknown) resulted in a 
nonbooting system, even rescue binaries didn't work (init fails), using an 
userland around 6.99.28.

See thread "Current build of netbsd for rpi is unable to boot" on port-arm.

>How-To-Repeat:
Install a RPI system from March 2014, replace the kernel with one from at least 
Apr. 7th. Boot.
>Fix:
Either upgrade all of userland, or use kernel option COMPAT_NETBSD32.  The 
latter can still cause problems though, with dynamic libraries (I think).