From: Chris Malley <mail@chrismalley.co.uk>
To: Ingo Molnar <mingo@elte.hu>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-kernel@vger.kernel.org,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: perf sched record hangs machine
Date: Wed, 23 Sep 2009 13:20:47 +0100 [thread overview]
Message-ID: <7863dc4c0909230520o8338114uf63b9d5e6f4b6c4e@mail.gmail.com> (raw)
In-Reply-To: <20090923114258.GA4132@elte.hu>
2009/9/23 Ingo Molnar <mingo@elte.hu>:
>
> * Chris Malley <mail@chrismalley.co.uk> wrote:
>
>> 2009/9/23 Ingo Molnar <mingo@elte.hu>:
>> >
>> > * Chris Malley <mail@chrismalley.co.uk> wrote:
>> >
>> >> Applied Peter's patch, doesn't seem to have fixed the problem:
>> >>
>> >> [ ?246.408893] BUG: unable to handle kernel paging request at ffffb300
>> >> [ ?246.408939] IP: [<c011b0bd>] default_send_IPI_self+0x1d/0x50
>> >
>> > could you please send the full bootlog, up to the crash?
>> >
>> > Thanks,
>> >
>> > ? ? ? ?Ingo
>> >
>>
>> Sure, but I'm just rebuilding from clean first in case the change
>> wasn't picked up for some reason, because I don't see how it can get
>> to default_send_IPI_self() in my configuration...
>
> yeah - i have that thinking too - according to your earlier boot
> messages x86_pmu.apic must be 0 and that codepath shouldnt trigger.
>
> Ingo
>
Yep, my bad. The build process had helpfully appended a -dirty tag to
the kernel version which I hadn't noticed.
I can't make it hang any more, so the fix looks good to me, thanks everyone.
Chris
next prev parent reply other threads:[~2009-09-23 12:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-22 21:09 Chris Malley
2009-09-22 21:24 ` Frederic Weisbecker
2009-09-22 21:44 ` Frederic Weisbecker
2009-09-23 6:16 ` Peter Zijlstra
2009-09-23 7:32 ` Ingo Molnar
2009-09-23 7:40 ` Ingo Molnar
2009-09-23 7:44 ` Cyrill Gorcunov
2009-09-23 8:48 ` Cyrill Gorcunov
2009-09-23 8:52 ` Peter Zijlstra
2009-09-23 9:15 ` Chris Malley
2009-09-23 9:20 ` Ingo Molnar
2009-09-23 9:48 ` Cyrill Gorcunov
2009-09-23 10:06 ` Chris Malley
2009-09-23 10:12 ` Cyrill Gorcunov
2009-09-23 10:42 ` Ingo Molnar
2009-09-23 11:41 ` Chris Malley
2009-09-23 11:42 ` Ingo Molnar
2009-09-23 12:20 ` Chris Malley [this message]
2009-09-23 12:27 ` Ingo Molnar
2009-09-23 10:41 ` Ingo Molnar
2009-09-23 9:03 ` Peter Zijlstra
2009-09-23 11:49 ` [tip:perf/urgent] perf_event, x86: Fix 'perf sched record' crashing the machine tip-bot for Peter Zijlstra
2009-09-23 12:15 ` Chris Malley
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