[Bug 296498] ktls broken in 15.0-RELEASE-p10

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Jul 2026 14:35:09 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296498

            Bug ID: 296498
           Summary: ktls broken in  15.0-RELEASE-p10
           Product: Base System
           Version: Unspecified
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: freebsd.68fba@nospam.spacesurfer.com

I recently upgraded from  15.0-RELEASE-p9 to 15.0-RELEASE-p10 and a ktls test I
have running as part of a software build for several years stopped working.
This test simply creates a local TLS connection and sends some data to and from
the peers. The test uses openssl (base) with  SSL_OP_ENABLE_KTLS such that ktls
is used if enabled (which it has been for several years).

Since the kernel upgrade I get a EBADMSG error in the server when reading the
initial data sent from the client.

Note that if I dont set SSL_OP_ENABLE_KTLS on either end of the connection the
test works fine. It also works fine for kern.ipc.tls.enable=0

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