From: Borislav Petkov <bp@alien8.de>
To: "Paul E. McKenney" <paulmck@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Cc: x86-ml <x86@kernel.org>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: INFO: task rcu_gp:3 blocked for more than 122 seconds.
Date: Fri, 30 Sep 2022 12:19:34 +0200 [thread overview]
Message-ID: <YzbCtvNWue+qUnT0@zn.tnic> (raw)
In-Reply-To: <20220929153722.GG4196@paulmck-ThinkPad-P17-Gen-1>
On Thu, Sep 29, 2022 at 08:37:22AM -0700, Paul E. McKenney wrote:
> As discussed on IRC, I got nuttin' on this one. Looks like an RCU
> expedited grace period is stuck waiting for its workqueue kthread, and
> that this workqueue kthread is stuck for some reason.
Yeah, it is not that easy to repro - I need to wait a couple of minutes
after it boots. Look at the timestamps:
[ 249.149378] INFO: task rcu_gp:3 blocked for more than 122 seconds.
^^^^^^^^^^^^^^
But it looks like sched/core is the culprit because merging it into
Linus master triggers it.
Lemme bisect that.
Stay tuned.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2022-09-30 10:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 9:26 Borislav Petkov
2022-09-29 15:37 ` Paul E. McKenney
2022-09-30 10:19 ` Borislav Petkov [this message]
2022-09-30 16:11 ` Paul E. McKenney
2022-09-30 16:28 ` Borislav Petkov
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