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Date:      Wed, 05 Aug 2020 03:08:29 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 247647] if_vmx(4): Page fault when opening netmap port (IFLIB/DMA)
Message-ID:  <bug-247647-7501-RLOfm2WY5f@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-247647-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-247647-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D247647

--- Comment #17 from Zhenlei Huang <zlei.huang@gmail.com> ---
(In reply to Murat from comment #16)
> I can also confirm that patch fixes the kernel crash. PINGs are also ok.
> However, if you try to do secure copy, you start getting DUP packets; and=
 connection stalls.

For
> PINGs are also ok
, do you mean after the fix there's no duplicated ICMP replies ?

For the duplicated TCP acks, there's a known regression
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D236999 . Can you please
disable TSO ('ifconfig vmx0 -tso') and test again ?

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