From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ben Hutchings <ben@decadent.org.uk>
Subject: Re: INFO: rcu_bh detected stall on CPU 3 (t=0 jiffies)
Date: Wed, 2 Jan 2013 19:14:49 -0800 [thread overview]
Message-ID: <20130103031449.GB25701@linux.vnet.ibm.com> (raw)
In-Reply-To: <1357174163.10284.8.camel@gandalf.local.home>
On Wed, Jan 02, 2013 at 07:49:23PM -0500, Steven Rostedt wrote:
> On Wed, 2013-01-02 at 13:29 -0800, Paul E. McKenney wrote:
> > On Wed, Jan 02, 2013 at 03:56:30PM -0500, Steven Rostedt wrote:
> > > On Wed, Jan 02, 2013 at 08:09:20PM +0100, Ralf Hildebrandt wrote:
> > > > This happened of a virtual guest (Linux mail 3.2.0-35-virtual #55-Ubuntu SMP Wed Dec 5 18:02:05 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux)
> > >
> > > 3.2 is rather old and this looks to be a stock Ubuntu kernel. May want
> > > to file a Bugzilla (or whatever they call it) with them.
> > >
> > > >
> > > > Jan 2 13:24:08 mail kernel: [3531872.484283] INFO: rcu_bh detected stall on CPU 3 (t=0 jiffies)
> > >
> > > 0 jiffies?
> >
> > One possibility is that they are missing commit a10d206e (rcu: Fix
> > day-one dyntick-idle stall-warning bug), at least assuming that
> > CONFIG_PREEMPT=n. This went into 3.6, IIRC.
>
> If that does fix the issue, we probably should send that off to Ben for
> inclusion into 3.2 stable.
Looks like you already CCed him, thank you! ;-)
Thanx, Paul
> Thanks,
>
> -- Steve
>
> >
> > Thanx, Paul
> >
>
>
>
> --
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next prev parent reply other threads:[~2013-01-03 3:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-02 19:09 INFO: rcu_bh detected stall on CPU 3 (t=0 jiffies) Ralf Hildebrandt
2013-01-02 20:56 ` Steven Rostedt
2013-01-02 21:29 ` Paul E. McKenney
2013-01-03 0:49 ` Steven Rostedt
2013-01-03 3:14 ` Paul E. McKenney [this message]
2013-01-13 4:13 ` Ben Hutchings
2013-01-18 17:35 ` Paul E. McKenney
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