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Date:      Mon, 23 Aug 2021 14:46:08 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 254695] Hyper-V + TCP_BBR: Kernel Panic: Assertion in_epoch(net_epoch_preempt) failed at netinet/tcp_lro.c:1180
Message-ID:  <bug-254695-7501-7ykRu0clp2@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-254695-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-254695-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254695

--- Comment #35 from Michael Tuexen <tuexen@freebsd.org> ---
We need something along the lines of your proposed fix. However, the number=
 of
entries/exist of the epoch should be kept minimal. So we might want to have=
 the
author of the driver to have a look.

But first we need to get the contracts of the TCP LRO code nailed down.
Especially in the case when the HPTS is used. Let me come up with a patch f=
or
that first to get the contract fixed. Then we can propose a functional, may=
be
performance wise not optimal fix for the MS specific drive. Hopefully some
people with expertise on the drive can help out.

--=20
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