From: "Alex Xu (Hello71)" <alex_y_xu@yahoo.ca>
To: "Jason A. Donenfeld" <Jason@zx2c4.com>,
Wang Jian <larkwang@gmail.com>,
wireguard@lists.zx2c4.com
Subject: Re: soft lockup - may be related to wireguard (backported)
Date: Mon, 04 May 2020 09:49:43 -0400 [thread overview]
Message-ID: <1588599653.habtnvnvne.none@localhost> (raw)
In-Reply-To: <CAHmME9oNus499EVFHVfLNjbOhU+vOV4P7R7USCm1ycNH2e0apA@mail.gmail.com>
Excerpts from Jason A. Donenfeld's message of May 4, 2020 1:26 am:
> Are you routing wireguard over wireguard, or something interesting like that?
>
> Is ipsec being used?
>
This "DN2800MT" looks like an Atom board from 2012; are you trying to
run a very large bandwidth through it? I think it's plausible that
buffering could cause a large enough chunk of work for a slow CPU that
the kernel could erroneously think that the code is stuck. I don't know
why that would happen on the tx thread though, or why it would result in
an RCU stall, seeing as only a single access is made under an RCU lock
in this function...
next prev parent reply other threads:[~2020-05-04 13:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 3:55 Wang Jian
2020-05-04 5:26 ` Jason A. Donenfeld
2020-05-04 12:49 ` Wang Jian
2020-05-04 13:49 ` Alex Xu (Hello71) [this message]
2020-05-04 16:51 ` Wang Jian
2020-05-04 10:47 ` Serge Belyshev
2020-05-04 22:55 ` Jason A. Donenfeld
2020-05-04 22:28 ` Jason A. Donenfeld
2020-05-05 6:54 ` Wang Jian
2020-05-05 0:05 ` Jason A. Donenfeld
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