On Mon, 3 Feb 2014, David Rientjes wrote:
On Mon, 3 Feb 2014, Vlastimil Babka wrote:
It seems to come from balloon_page_movable() and its test page_count(page) ==
1.
Hmm, I think it might be because compound_head() == NULL here. Holger,
this looks like a race condition when allocating a compound page, did you
only see it once or is it actually reproducible?
No, this only happened once. It is not reproducable, the system was running
for four days without problems. And before this kernel, five years without
any problems.
Thanks,
Holger
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