[RndTbl] sshd: Corrupted MAC on input.
Gilbert E. Detillieux
gedetil at cs.umanitoba.ca
Mon Aug 10 10:57:14 CDT 2020
On 2020-08-04 1:28 p.m., Gilbert E. Detillieux wrote:
> On 2020-08-04 12:55 p.m., Adam Thompson wrote:
>> I can't remember, did you try disabling HW offload on both sending and
>> receiving ends already? (Either end could trigger the SSH abort.)
>
> I hadn't yet. (I was trying a few other things first, such as changing
> MAC algorithms, and rebooting with the older kernel, neither of which
> seemed to affect things.)
>
> I've now disabled both rx and tx checksum offloading. We'll see if that
> makes a difference.
So, after almost 6 days running with rx and tx checksum offloading
disabled, not a single "Corrupted MAC on input" error! My overnight
rsync now runs to completion.
I hope this isn't premature, but I think we found the problem! (Who
would have thought it could make such a difference?!)
It also doesn't seem to have caused a noticeable performance hit. I'm
thinking we were disk I/O bound on the remote (receiving) end, anyway,
so if the network I/O is a bit slower, we wouldn't see it.
Thanks, everyone, for your suggestions!
Gilbert
--
Gilbert E. Detillieux E-mail: <gedetil at cs.umanitoba.ca>
Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/
University of Manitoba Phone: (204)474-8161
Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609
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