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Date:      Mon, 06 Mar 2023 14:54:51 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 268400] Page fault kernel panic with KTLS enabled
Message-ID:  <bug-268400-227-6ZxlY8NwMY@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-268400-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-268400-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D268400

--- Comment #3 from Daniel Ponte <amigan@gmail.com> ---
My interface configuration and pf policy are rather large and complex and it
would take some time to sanitize them. Could I send directly to someone?

That said, I can confirm this is still happening in 13.2-STABLE FreeBSD
13.2-STABLE #17 stable/13-n254582-c0e7e1848360: Thu Feb 16 15:19:52 EST 202=
3.

Digging deeper, the panic appears to be caused by a pf rule with
route-to/reply-to rerouting to an IPv6 gif(4) interface with MTU of only 12=
80.
It is caused by KTLS trying to send a packet that gets rerouted by pf (like=
ly
by reply-to) that results in ICMPv6 type 2 (Packet Too Big).

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