linux-kernel - TREE01 rcutorture writer stalls?

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Message-ID: <20201216050407.GA14426@paulmck-ThinkPad-P72>
Date:   Tue, 15 Dec 2020 21:04:07 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     frederic@...nel.org
Cc:     linux-kernel@...r.kernel.org
Subject: TREE01 rcutorture writer stalls?

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?

							Thanx, Paul

Download attachment "console-TREE01.log.gz" of type "application/gzip" (140245 bytes)