From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Dave Jones <davej@codemonkey.org.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Stephane Eranian <eranian@gmail.com>
Subject: Re: perf related lockdep bug
Date: Thu, 5 Nov 2015 06:04:46 -0800 [thread overview]
Message-ID: <20151105140446.GD29027@linux.vnet.ibm.com> (raw)
In-Reply-To: <20151105024607.GD3533@two.firstfloor.org>
On Thu, Nov 05, 2015 at 03:46:07AM +0100, Andi Kleen wrote:
> On Wed, Nov 04, 2015 at 04:55:28PM -0800, Paul E. McKenney wrote:
> > On Wed, Nov 04, 2015 at 09:58:36PM +0100, Andi Kleen wrote:
> > >
> > > I tested my perf stress workload with the patch applied on 4.3,
> > > unfortunately got a hang again :-/
> >
> > Any diagnostics, sysrq-T output, or whatever?
>
> The system was dead in the screen saver, no serial console.
> I restarted it and may have some more information tomorrow.
>
> The previous hangs were usually timeout on smp_call_function,
> so one CPU disappeared.
>
> I'll try the extra hunk you pointed out.
Thank you, looking forward to seeing what you get from this.
Thanx, Paul
next prev parent reply other threads:[~2015-11-05 14:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-04 5:17 perf related lockdep bug Dave Jones
2015-11-04 10:21 ` Peter Zijlstra
2015-11-04 10:28 ` Peter Zijlstra
2015-11-04 10:50 ` Peter Zijlstra
2015-11-04 13:48 ` Paul E. McKenney
2015-11-04 14:20 ` Peter Zijlstra
2015-11-04 15:34 ` Paul E. McKenney
2015-11-04 15:36 ` Peter Zijlstra
2015-11-04 15:51 ` Paul E. McKenney
2015-11-04 20:58 ` Andi Kleen
2015-11-05 0:55 ` Paul E. McKenney
2015-11-05 1:59 ` Paul E. McKenney
2015-11-05 2:46 ` Andi Kleen
2015-11-05 14:04 ` Paul E. McKenney [this message]
2015-11-11 13:29 ` Paul E. McKenney
2015-11-10 6:39 ` [tip:perf/urgent] perf: Disable IRQs across RCU RS CS that acquires scheduler lock tip-bot for Paul E. McKenney
2015-11-04 14:01 ` perf related lockdep bug Paul E. McKenney
2015-11-04 14:34 ` Peter Zijlstra
2015-11-05 1:57 ` Paul E. McKenney
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