linux-kernel - Re: v6.12-rc workqueue lockups

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Message-ID: <20241023203951.unvxg2claww4s2x5@quack3>
Date: Wed, 23 Oct 2024 22:39:51 +0200
From: Jan Kara <jack@...e.cz>
To: John Garry <john.g.garry@...cle.com>
Cc: linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk,
	brauner@...nel.org, jack@...e.cz, linux-fsdevel@...r.kernel.org
Subject: Re: v6.12-rc workqueue lockups

On Wed 23-10-24 11:19:24, John Garry wrote:
> Hi All,
> 
> I have been seeing lockups reliably occur on v6.12-rc1, 3, 4 and linus'
> master branch:
> 
> Message from syslogd@...rry-atomic-write-exp-e4-8-instance-20231214-1221 at
> Oct 22 09:07:15 ...
>  kernel:watchdog: BUG: soft lockup - CPU#12 stuck for 26s! [khugepaged:154]

BTW, can you please share logs which would contain full stacktraces that
this softlockup reports produce? The attached dmesg is just from fresh
boot...  Thanks!

								Honza
-- 
Jan Kara <jack@...e.com>
SUSE Labs, CR