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Date:      Thu, 29 Jun 2017 13:12:55 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 220217] deadlock on enc and pf
Message-ID:  <bug-220217-8-2sKc2Uzx6z@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-220217-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-220217-8@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D220217

Andrey V. Elsukov <ae@FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |ae@FreeBSD.org

--- Comment #4 from Andrey V. Elsukov <ae@FreeBSD.org> ---
(In reply to Kristof Provost from comment #3)
> I'm not quite sure how to fix this though. In fact, right now I don't
> understand how this ever works.

I think we can extend ipsec_ctx_data structure by adding inpcb pointer. It =
will
be initialized for IPSEC_ENC_BEFORE+HHOOK_TYPE_IPSEC_OUT case, and will be =
NULL
for other cases. Then pass this pointer to the pfil_run_hooks(). In this ca=
se,
I think, pf_test_rule() will not invoke pf_socket_lookup() due to
pd->lookup.done =3D 1. And for other cases pf_socket_lookup() can be called,
because we don't hold any inpcbs.

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