Messages in this thread |  | | Date | Wed, 31 Jul 1996 17:25:32 +0300 (EET DST) | From | Linus Torvalds <> | Subject | Re: swap problems |
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On Sat, 27 Jul 1996, Leonard N. Zubkoff wrote: > > Date: Sun, 28 Jul 1996 01:38:03 -0400 (EDT) > From: Jon Lewis <jlewis@inorganic5.fdt.net> > > 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.
Linus
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