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SubjectRe: Bad page state in process 'nfsd' with xfs
David Greaves wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> This was with 2.6.16.9
>
> There's an nfs export from an xfs on an lvm on a raid5 on some
> libata/sata disks.
> (cc'ing xfs since I recall rumoured(?) badness in old nfs/xfs/md/lvm
> setups and xfs_sendfile is mentioned)
>
> dmesg had:
>
> Bad page state in process 'nfsd'
> page:b1602060 flags:0x80000008 mapping:00000000 mapcount:0 count:16777216
> Trying to fix it up, but a reboot is needed
> Backtrace:
> [<b013bda2>] bad_page+0x62/0x90
> [<b013c1c8>] prep_new_page+0x78/0x80

Looks like you have a bit flipped in 'count', which was not flipped
when the page was last freed. Probably buggy RAM.

Running memtest overnight might confirm that.

--
SUSE Labs, Novell Inc.
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