linux-kernel - Re: perf counter issue - WARN_ON_ONCE(!list_empty(&tsk->perf_counter_ctx.counter

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Message-ID: <20090513165724.GA32707@in.ibm.com>
Date:	Wed, 13 May 2009 22:27:24 +0530
From:	Srivatsa Vaddagiri <vatsa@...ibm.com>
To:	Ingo Molnar <mingo@...e.hu>, a.p.zijlstra@...llo.nl
Cc:	linux-kernel@...r.kernel.org
Subject: Re: perf counter issue -
	WARN_ON_ONCE(!list_empty(&tsk->perf_counter_ctx.counter_list));

On Wed, May 13, 2009 at 10:24:33PM +0530, Srivatsa Vaddagiri wrote:
> I am hitting this warning in kernel/exit.c (latest -tip code):
> 
> WARN_ON_ONCE(!list_empty(&tsk->perf_counter_ctx.counter_list));
> 
> I was using perf counters against a java benchmark.

Basically using perf counters as:

	$ perf stat java ....

- vatsa
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