[Bug 257195] [tcp] panic when RACK enabled

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 15 Jul 2021 07:34:08 UTC

--- Comment #6 from Michael Tuexen <tuexen@freebsd.org> ---
(In reply to iron.udjin from comment #5)

Interesting. I have seen a panic like in comment #4 on one of my arm64 servers
running FreeBSD main, but thought that it is related to arm64, since I haven't
seen it on amd64. So your report shows that it is platform independent.
Since we keep FreeBSD main and stable/13 in sync as much as possible, it is not
unexpected that you see the problem on stable/13 and I saw it on main.

Do you have steps that trigger the panic deterministically after the system has
come up? It would be helpful for me to be able to trigger the problem also on
an amd64 system.

Can you also provide the output of ifconfig? I'm wondering if LRO or TSO is

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