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SubjectRe: swap problems
On Wed, 31 Jul 1996, Linus Torvalds wrote:

> > 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)
>
> 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.

I'd rather think it's not the hardware. This was on a P90 that's been in
service over a year. It's never exhibited cache problems before. The
RAM has been upgraded several times...but last time was months ago. It's
got the Neptune chipset and one CPU. I've upgraded it to 2.0.10.

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