[Bug 258196] Kernel panic on pf_free_state with HardenedBSD

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From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 22 Sep 2021 13:23:17 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258196

--- Comment #3 from Théo Bertin <theo.bertin@advens.fr> ---
I couldn't find a way to consistently reproduce the problem, either on
HardenedBSD or FreeBSD.
However, investigating a bit further the trace and commits related to parts of
the concerned code, the problem is certainly to be between commits bc6cf5a56
and 2f6dd4a29, and likely between 5372a43bf and 2f6dd4a29.

Our impacted systems are on (HardenedBSD) commits 4fc0cb929 (FreeBSD commit
eed85dd1a) and 1969e37a9 (FreeBSD commit 398bfe63e) which include pf code
changes.

However, some later changes are not applied and reported to a HardenedBSD
patch, like this particular commit : a37c697b8da9, which might be a possible
resolution to our problem.

Do you have any insight onto that ?

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