port-sparc/59907: sparc install regression

["Andreas Gustafsson via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         59907
>Category:       port-sparc
>Synopsis:       sparc install regression
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-sparc-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jan 11 12:30:00 +0000 2026
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date >= 2026.01.09.09.38.33
>Organization:
>Environment:
System: NetBSD
Architecture: sparc
Machine: sparc
>Description:

The sparc testbed fails at the installation stage since this recent commit:

   2026.01.09.09.38.33 skrll src/libexec/ld.elf_so/xmalloc.c 1.17

Sysinst prints "Command ended on signal" both when it runs "certctl rehash"
and when it attempts to set the root password.

For logs, see:

  https://releng.netbsd.org/b5reports/sparc/commits-2026.01.html#2026.01.09.09.38.33

>How-To-Repeat:

>Fix: