kern/43817: current kernel breaks tcsh

[martin%NetBSD.org@localhost]

>Number:         43817
>Category:       kern
>Synopsis:       current kernel breaks tcsh
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 30 19:00:00 +0000 2010
>Originator:     Martin Husemann
>Release:        NetBSD 5.99.38
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD after-hours.aprisoft.de 5.99.38 NetBSD 5.99.38 (GENERIC) #10: 
Thu Jul 29 10:42:53 CEST 2010 
martin%emmas.aprisoft.de@localhost:/nelly/usr/src/sys/arch/sparc64/compile/GENERIC
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:

Updating the kernel on this machine to -current breaks tcsh (stock, from 
pkgsrc),
it dies with:

    16      1 tcsh     CALL  break(0x26b918)
    16      1 tcsh     RET   break -1 errno 12 Cannot allocate memory
    16      1 tcsh     CALL  break(0x26b919)
    16      1 tcsh     RET   break -1 errno 12 Cannot allocate memory
    16      1 tcsh     CALL  break(0x26c118)
    16      1 tcsh     RET   break -1 errno 12 Cannot allocate memory
    16      1 tcsh     NAMI  "tcsh.core"
...

>How-To-Repeat:
Boot a -current kernel, try to exec older tcsh (binary from June 1).

>Fix:
n/a