linux-kernel - Re: kworker/0:3+pm hogging CPU

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200720143213.GJ4074@dhcp22.suse.cz>
Date:   Mon, 20 Jul 2020 16:32:13 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Alan Stern <stern@...land.harvard.edu>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, "Rafael J. Wysocki" <rjw@...ysocki.net>
Subject: Re: kworker/0:3+pm hogging CPU

On Mon 20-07-20 09:58:57, Alan Stern wrote:
[...]
> Can you provide the contents of /sys/kernel/debug/usb/devices and also a 

attached.

> usbmon trace showing a few rounds of this recurring activity?

This is not my area so I will need some help here. I assume I should
look for debug/usb/usbmon which contains quite some files for me
0s  0u  1s  1t  1u  2s  2t  2u
most of them provide data when cating them.

> section of the dmesg log with dynamic debugging enabled for the usbcore 
> module, as well.

Could you give me more details steps please?
-- 
Michal Hocko
SUSE Labs

View attachment "usb.devices" of type "text/plain" (3021 bytes)