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SubjectRe: swap problems

On Sat, 27 Jul 1996, Leonard N. Zubkoff wrote:
> Date: Sun, 28 Jul 1996 01:38:03 -0400 (EDT)
> From: Jon Lewis <>
> Using 2.0.3, I just got a bunch of these:
> swap_duplicate: trying to duplicate unused page
> swap_free: swap-space map bad (entry 00000100)
> Each message was in groups of 7-8 each. The sequence _is_ currently
> repeating at 5 minute intervals, 4 times so far. Anyone seen this? Is
> it fixed already in a later release?
> I saw one of these for the first time yesterday in 2.0.8 with a motherboard I'm
> testing:
> Jul 26 19:53:59 gwynedd kernel: swap_free: swap-space map bad (entry 00100000)

Both of the above _look_ like a one-bit error (it's probably an empty
entry, but one bit got set some way). Together with a few SIGSEGV's in
user space and other random crashes I'd say it's most likely due to
memory or cache problems.

It can obviously be due to a wild kernel pointer, too.


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