linux-kernel - Re: Deadlock at reboot?

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Message-ID: <YiIfCDjOIBoM+KlB@kroah.com>
Date:   Fri, 4 Mar 2022 15:15:36 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Maxime Ripard <maxime@...no.tech>
Cc:     Jiri Slaby <jirislaby@...nel.org>, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: Deadlock at reboot?

On Fri, Mar 04, 2022 at 11:49:42AM +0100, Maxime Ripard wrote:
> Hi,
> 
> I'm not entirely sure who I'm supposed to send this to, so apologies if
> I forgot somebody.
> 
> I've had an issue when rebooting on and off for a couple of monthes, but
> I got a stacktrace from lockdep today:
> 
> [71721.872904] reboot: Restarting system
> [71721.876743] ------------[ cut here ]------------
> [71721.877081]
> [71721.877084] ======================================================
> [71721.877086] WARNING: possible circular locking dependency detected
> [71721.877088] 5.17.0-rc6-next-20220303-v8+ #10 Not tainted

This is linux-next, does this also happen on Linus's tree?

If not, can you bisect to find the offending commit?

thanks,

greg k-h