Messages in this thread | | | Date | Mon, 26 Aug 2013 13:46:05 -0700 | Subject | Re: unused swap offset / bad page map. | From | Linus Torvalds <> |
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On Mon, Aug 26, 2013 at 1:15 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > So I'm almost likely to think that we are more likely to have > something wrong in the messy magical special cases.
Of course, the good news would be if it actually ends up being the soft-dirty stuff, and bisection hits something recent.
So maybe I'm overly pessimistic. That messy swap_map[] code really _is_ messy, but at the same time it should also be pretty well-tested. I don't think it's been touched in years.
That said, google does find "swap_free: Unused swap offset entry" reports from over the years. Most of them seem to be single-bit errors, though (ie when the entry is 00000100 or similar I'm more inclined to blame a bit error - in contrast your values look like "real" swap entries).
Linus
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