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Date:      Thu, 18 Jul 2024 01:40:55 +0000
From:      bugzilla-noreply@freebsd.org
To:        pf@FreeBSD.org
Subject:   [Bug 279899] pf_unlink_state mutex unlock page fault panic
Message-ID:  <bug-279899-16861-bBjMXgfVTO@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-279899-16861@https.bugs.freebsd.org/bugzilla/>
References:  <bug-279899-16861@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D279899

--- Comment #14 from Zhenlei Huang <zlei@FreeBSD.org> ---
(In reply to Franco Fichtner from comment #13)
> Bisecting this is a little tricky due to the random nature but I think it=
's the
> backport of
>
> https://cgit.freebsd.org/src/commit/?id=3D2671bde99295d9
>
> which now runs pfsync_drop() which is what happens when you don't use pfs=
ync which
> didn't happen before as the commit suggests.

Yes, your analysis is right.

> INVARIANTS appears to trip over:
>=20
> panic: pfsync_drop: st->sync_state =3D=3D q
>=20
> without INVARIANTS it just continues and let's this crash at pf_unlink_st=
ate() later on.

Yes. Exactly.

> Maybe it's wrong but I also don't appreciate the lack of enthusiasm looki=
ng into
> fixing regressions on stable branches. At least there is enough informati=
on on the
> table already to do something but I don't see any engagement.
>
> Cheers,
> Franco

Sorry for that. I have busy days. I tried to repeat but failed. Maybe I have
wrong configuration of if_pfsync.

May Daniel, Gyver, or you share a minimal setup? This should be repeated al=
so
on main IMO.

--=20
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