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Date: Fri, 22 Nov 2013 23:05:25 +0000 From: Mel Gorman <mgorman@...e.de> To: Alex Thorlton <athorlton@....com> Cc: Rik van Riel <riel@...hat.com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: BUG: mm, numa: test segfaults, only when NUMA balancing is on On Fri, Nov 22, 2013 at 03:28:07PM -0600, Alex Thorlton wrote: > > If the warning added by that patch does *not* trigger than can you also > > test this patch? It removes the barriers which should not be necessary > > and takes a reference tot he page before waiting on the lock. The > > previous version did not take the reference because otherwise the > > WARN_ON could not distinguish between a migration waiter and a surprise > > gup. > > Sorry for the delay; been a bit busy. I tested both of these patches on > top of this one (separately, of course): > > http://www.spinics.net/lists/linux-mm/msg63919.html > > I think that's the one you were referring to, if not send me a pointer > to the correct one and I'll give it another shot. Both patches still > segfaulted, so it doesn't appear that either of these solved the > problem. I see. Does THP have to be enabled or does it segfault even with THP disabled? -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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