port-sparc64/59314: t_memfd_create:seal_grow is failing

[campbell+netbsd%mumble.net@localhost]

>Number:         59314
>Category:       port-sparc64
>Synopsis:       t_memfd_create:seal_grow is failing
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-sparc64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 17 14:30:00 +0000 2025
>Originator:     Taylor R Campbell
>Release:        current
>Organization:
The SparcBSD Memfdation
>Environment:
>Description:
FAILED: /tmp/build/2025.04.16.12.05.52-sparc64/src/tests/kernel/t_memfd_create.c:270: Mmap failed unexpectedly (Invalid argument)

https://releng.netbsd.org/b5reports/sparc64/2025/2025.04.16.12.05.52/test.html#kernel_t_memfd_create_seal_grow
>How-To-Repeat:
cd /usr/tests/kernel
atf-run t_memfd_create:seal_grow | atf-report
>Fix:
Yes, please!