Re: a whole bunch of crashes since todays -mm merge.
From: Dave Jones
Date: Thu Jun 07 2012 - 21:12:17 EST
On Thu, Jun 07, 2012 at 06:06:27PM -0700, Linus Torvalds wrote:
> On Thu, Jun 7, 2012 at 6:00 PM, Dave Jones <davej@xxxxxxxxxx> wrote:
> >
> > Or I might just be getting lucky..
>
> Do you have SPLIT_RSS_COUNTING enabled?
I don't think so ? I have CONFIG_SPLIT_PTLOCK_CPUS=999999,
so it looks like that never gets defined unless I'm missing something obvious.
> Do you see multiple "BUG: Bad rss-counter state" messages?
no
> The sync_mm_rss() thing could basically overwrite an already-free'd
> piece of memory, so it could cause pretty random stuff. But I think
> you need to be unlucky to hit the window.
the 8169 debug stuff I was trying to run used the function tracer. Could that have
widened the window ?
Dave
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