Re: January 2026 stabilization week

From: Gleb Smirnoff <glebius_at_freebsd.org>
Date: Wed, 28 Jan 2026 20:49:26 UTC 
On Mon, Jan 26, 2026 at 01:00:25AM -0800, Gleb Smirnoff wrote:
T> This is an automated email to inform you that the January 2026 stabilization week
T> started with FreeBSD/main at main-n283376-8ef8c6abfadf, which was tagged as
T> main-stabweek-2026-Jan.

The snapshot underwent A/B performance testing at Netflix and several people upgraded
their laptops, desktops and home routers.

Following problems were identified in this snapshot:

1) INVARIANTSs panic when using ipfw(4) dynamic rules. ipfw(4) users are
   recommended to cherry-pick d8a78048a246 and 29c3350f395a.
2) The AMD CPPC switched on by default instead of Cool`n'Quiet caused problems on
   certain hardware.  For laptops see bug 292615.
   At Netflix A/B test we discovered that CPPC mode reports wrong frequency levels
   to powerd, which results in reduced performance.
   This problem is still not resolved.
3) Panic in vm_map code:  https://people.freebsd.org/~novel/misc/core20260128.txt
   Note that this was discovered on pre-stabweek CURRENT.  Only Roman seen this
   panic and there's no reproduce yet, so unresolved.

The advisory code freeze is over.

-- 
Gleb Smirnoff