Messages in this thread | | | Date | Mon, 1 May 2006 08:04:27 +1000 | From | Nathan Scott <> | Subject | Re: Bad page state in process 'nfsd' with xfs |
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Hi there,
On Fri, Apr 28, 2006 at 09:22:23PM +0100, 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)
Really old (early 2.6) or previously with 4Kstacks this used to be a problem, but should not be with your kernel version.
> 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 > [<b013c6b6>] buffered_rmqueue+0xf6/0x1f0 > [<b013c8e2>] get_page_from_freelist+0x92/0xb0
Hmm... so, your page flags field there (0x80000008) has the 33rd and 4th bits set - 4 is pageuptodate, which is fine, but 33 seems odd (perhaps some arch-specific bit? or a single bit error...).
But, the warning is triggered by the page count (16777216 above), and that is 0x1000000 -- which is a huge, improbable count; that looks to me like it could very well be the result of a single bit error too.
You may have a hardware problem - try running memtest I guess.
cheers.
-- Nathan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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