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From:   Qian Cai <cai@lca.pw>
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Subject: Re: "rcu: React to callback overload by aggressively seeking quiescent states" hangs on boot
Date:   Fri, 13 Dec 2019 18:11:16 -0500
Message-Id: <CAA6354A-C747-4BE0-8EDC-C06E3C1D7D08@lca.pw>
References: <20191213224646.GH2889@paulmck-ThinkPad-P72>
Cc:     "Joel Fernandes (Google)" <joel@joelfernandes.org>,
        Tejun Heo <tj@kernel.org>,
        Josh Triplett <josh@joshtriplett.org>,
        Steven Rostedt <rostedt@goodmis.org>, rcu@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
In-Reply-To: <20191213224646.GH2889@paulmck-ThinkPad-P72>
To:     paulmck@kernel.org
Sender: linux-kernel-owner@vger.kernel.org
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> On Dec 13, 2019, at 5:46 PM, Paul E. McKenney <paulmck@kernel.org> wrote:
>=20
> I am running this on a number of x86 systems, but will try it on a

The config to reproduce includes several debugging options that might requir=
ed to recreate.

> wider variety.  If I cannot reproduce it, would you be willing to
> run diagnostics?

Yes.

>=20
> Just to double-check...  Are you running rcutorture built into the kernel?=

> (My guess is "no", but figured that I should ask.)

No as you can see from the config I linked in the original email.=