From: Greg KH <greg@kroah.com>
To: Yiyu Zhu <danielzeltar@gmail.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: kworker takes 100% core after unplugging usb c hub
Date: Thu, 11 Feb 2021 07:47:16 +0100 [thread overview]
Message-ID: <YCTS9I5xTVBDvwax@kroah.com> (raw)
In-Reply-To: <CAGv7gkgb12vGPvZcSE0aVOpu32zSgxaayYreLvWs+vJc5EkQrA@mail.gmail.com>
On Wed, Feb 10, 2021 at 06:31:56PM -0800, Yiyu Zhu wrote:
> Hi,
>
> I have an Anker A8383 USB C hub with power delivery. I use the hub for
> both charging and connecting to network. But when I unplug the hub, it
> sometimes causes two kworker processes to occupy 100 % cpu time.
> The issue will go away if I plug something back into the usbc port.
> And the issue seems to persist through reboot.
>
> I am running kernel version 5.8.0-43-generic #49~20.04.1-Ubuntu SMP
That is a very old kernel, and a distro-specific one. Please try the
latest 5.10.y release, or report the problem to Ubuntu as they are the
only ones that can support that unknown kernel.
good luck!
greg k-h
next prev parent reply other threads:[~2021-02-11 6:48 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 2:31 kworker takes 100% core after unplugging usb c hub Yiyu Zhu
2021-02-11 6:47 ` Greg KH [this message]
2021-02-11 10:10 ` Yiyu Zhu
2021-02-11 10:37 ` Greg KH
2021-02-11 22:11 ` Yiyu Zhu
2021-02-16 15:46 ` Mathias Nyman
2021-02-17 8:50 ` Yiyu Zhu
2021-02-19 9:44 ` Mathias Nyman
2021-03-02 6:25 ` Yiyu Zhu
2021-03-04 16:31 ` Mathias Nyman
2021-03-04 16:33 ` Alan Stern
2021-03-05 9:04 ` Mathias Nyman
2021-03-05 15:35 ` Alan Stern
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