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From:   Frederic Weisbecker <frederic@kernel.org>
To:     "Paul E. McKenney" <paulmck@kernel.org>
Cc:     linux-kernel@vger.kernel.org
Subject: Re: TREE01 rcutorture writer stalls?
Message-ID: <20201216130114.GA242489@lothringen>
References: <20201216050407.GA14426@paulmck-ThinkPad-P72>
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On Tue, Dec 15, 2020 at 09:04:07PM -0800, Paul E. McKenney wrote:
> Hello, Frederic,
> 
> Are you seeing rcutorture writer stalls?  Please see attached for an
> example from testing, search for "Call Trace".  I am running an overnight
> test, which should get me some idea of frequency.  My thought is to run
> on the same version, but without the rcutorture.nocbs_nthreads=0 and
> rcutorture.nocbs_toggle=1000 kernel boot parameters.
> 
> This sort of error can occur when grace periods are progressing, but
> callback processing is not.  Things do seem to recover.
> 
> Other thoughts?

Ok I'm trying to reproduce that.

Thanks.