Messages in this thread | | | Date | Thu, 27 Feb 2003 09:54:12 -0800 | From | Dave Hansen <> | Subject | Re: Oops running oprofile in 2.5.62 |
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John Levon wrote: > On Wed, Feb 26, 2003 at 10:29:43PM -0800, Dave Hansen wrote: > >>I'm pretty sure it happened on this line in oprofile_add_sample(): >> cpu_buf->buffer[cpu_buf->pos].eip = eip; >> >>Unable to handle kernel paging request at virtual address f8c3c000 > > Odd. UP or SMP ? Were you shutting down oprofile at the time (or did the > daemon crash ? check /var/lib/oprofile/oprofiled.log)
16-way NUMAQ :) It was in the middle of a dbench run, so nothing critical was happening with oprofile.
> The only thing I can think is that the buffer got freed then we got an > NMI afterwards (which obviously isn't supposed to happen...)
The irqbalance code is causing some funniness on these machines, so it might be related. I'll speak up if I see it again.
-- Dave Hansen haveblue@us.ibm.com
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