From: Frederic Weisbecker <frederic@kernel.org>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n?
Date: Fri, 11 Mar 2022 12:08:14 +0100 [thread overview]
Message-ID: <20220311110814.GA96127@lothringen> (raw)
In-Reply-To: <20220310215630.GA3490034@paulmck-ThinkPad-P17-Gen-1>
On Thu, Mar 10, 2022 at 01:56:30PM -0800, Paul E. McKenney wrote:
> Hello, Frederic,
>
> I recently added CONFIG_PREEMPT_DYNAMIC=n to the TREE07 file, and since
> then am getting roughly one RCU CPU stall warning (or silent hang)
> per few tens of hours of rcutorture testing on dual-socket systems.
> The stall warnings feature starvation of RCU grace-period kthread.
>
> Any advice on debugging this?
>
> Thanx, Paul
Ok it reproduces easily but I have no clue about the origin. I'm starting a
bisection.
Thanks!
prev parent reply other threads:[~2022-03-11 11:08 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-10 21:56 Scenario TREE07 with CONFIG_PREEMPT_DYNAMIC=n? Paul E. McKenney
2022-03-10 22:41 ` Frederic Weisbecker
2022-03-10 22:52 ` Paul E. McKenney
2022-03-11 11:32 ` Frederic Weisbecker
2022-03-11 13:07 ` Frederic Weisbecker
2022-03-11 15:21 ` Paul E. McKenney
2022-03-11 15:46 ` Frederic Weisbecker
2022-03-11 16:06 ` Paul E. McKenney
2022-03-11 16:47 ` Paul E. McKenney
2022-03-11 17:26 ` Frederic Weisbecker
2022-03-11 17:33 ` Paul E. McKenney
2022-03-11 11:08 ` Frederic Weisbecker [this message]
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