Re: All ISC programs dumping core after update to netbsd-10 stable

[Greg Troxel <gdt%lexort.com@localhost>]

Martin Husemann <martin%duskware.de@localhost> writes:

> On Tue, Oct 27, 2026 at 08:27:17PM -0400, Greg Troxel wrote:
>> I rolled back the kernel, and am working on libs, but it seems something
>> has gone wrong.
>
> It is libc, and has been fixed on the -10 branch:
>
> https://mail-index.netbsd.org/source-changes/2026/10/26/msg164819.html

Thanks.

This incident to me is a really big deal.  For as long as I can
remember, going back to 2010ish, updating sources along a stable branch,
and then if it built, updating and rebooting, has been 100% reliable.  I
do updates on my pkg builder domUs first anyway, but as those don't run
named I didn't notice.  This resulted in over an hour of service
downtime.

I realize that when people submit pullups they think everything is fine,
and it's probably too hard to run anita every time.  I don't even know
if our atf tests would have caught this.

I didn't notice discussion that there was a system-breaking bug in the
branch.  It would be good to send a note with the Big Scary Subject to
netbsd-users when this sort of thing is first discovered, so people who
have done a cvs update, and then are in the process of build, sync,
update can be warned.  As in "netbsd-10 branch is broken; don't update!".

Also, it feels to me like the rate of changes that seem kind of big for
the branch has increased.  That could be because of a higher rate of
vulnerability discovery, but overall the stable branch feels less
stable.  But looking at CHANGES, it seems this particular case was
fixing a real problem on other arches, and the pulled-up fix was just
incomplete.