From: Arnaldo Carvalho de Melo <acme@redhat.com>
To: Arun Sharma <arun@sharma-home.net>
Cc: Peter Zijlstra <peterz@infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-perf-users@vger.kernel.org
Subject: Re: 2.6.37 kernel warning in perf_events code
Date: Thu, 10 Feb 2011 17:08:43 -0200 [thread overview]
Message-ID: <20110210190843.GE20676@ghostprotocols.net> (raw)
In-Reply-To: <AANLkTi=4_p73eHhQbj5DDDEzTWaLou+u2igiY+yNiPQ9@mail.gmail.com>
Em Wed, Feb 09, 2011 at 06:50:09PM -0800, Arun Sharma escreveu:
> [ Not sure if this is known and fixed in newer kernels. My machine
> becomes unusable after this warning triggers ]
>
> perf record -g -p <pid> cs -o csw.data -- sleep 3
What kernel are you using? Peter, rings any bells?
- Arnaldo
> Feb 7 15:28:36 localhost kernel: WARNING: at kernel/perf_event.c:1302
> task_ctx_sched_out+0x45/0x67()
> ..
> Feb 7 15:28:36 localhost kernel: [<ffffffff8103c60d>]
> warn_slowpath_null+0x15/0x17
> Feb 7 15:28:36 localhost kernel: [<ffffffff8109e3b6>]
> task_ctx_sched_out+0x45/0x67
> Feb 7 15:28:36 localhost kernel: [<ffffffff8109e3b6>]
> task_ctx_sched_out+0x45/0x67
> Feb 7 15:28:36 localhost kernel: [<ffffffff810a207f>]
> perf_event_exit_task+0xca/0x196
> Feb 7 15:28:36 localhost kernel: [<ffffffff810a207f>]
> perf_event_exit_task+0xca/0x196
> Feb 7 15:28:36 localhost kernel: [<ffffffff8103fb3f>] do_exit+0x2c5/0x6e6
> Feb 7 15:28:36 localhost kernel: [<ffffffff8103fb3f>] do_exit+0x2c5/0x6e6
> Feb 7 15:28:36 localhost kernel: [<ffffffff81040021>] complete_and_exit+0x0/0x1e
> Feb 7 15:28:36 localhost kernel: [<ffffffff81040021>] complete_and_exit+0x0/0x1e
> Feb 7 15:28:36 localhost kernel: [<ffffffff8100293b>]
> system_call_fastpath+0x16/0x1b
> Feb 7 15:28:36 localhost kernel: [<ffffffff8100293b>]
> system_call_fastpath+0x16/0x1b
>
>
> 1301
> 1302 if (WARN_ON_ONCE(ctx != cpuctx->task_ctx))
> 1303 return;
>
> -Arun
next prev parent reply other threads:[~2011-02-10 19:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-10 2:50 2.6.37 kernel warning in perf_events code Arun Sharma
2011-02-10 19:08 ` Arnaldo Carvalho de Melo [this message]
2011-02-10 20:02 ` Arun Sharma
2011-02-10 20:20 ` Arnaldo Carvalho de Melo
2011-02-10 20:46 ` Arun Sharma
2011-02-11 0:42 ` Arnaldo Carvalho de Melo
2011-02-11 0:57 ` Arun Sharma
2011-02-11 12:16 ` Peter Zijlstra
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