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DateThu, 24 Aug 2006 16:55:34 +1000
FromNathan Scott <>
SubjectRe: 2.6.18-rc3-git3 - XFS - BUG: unable to handle kernel NULL pointer dereference at virtual address 00000078
On Wed, Aug 23, 2006 at 10:42:10AM +0200, Paul Slootman wrote:
> 
> I compiled 2.6.17.9 yesterday with gcc 4.1 (the previous kernel that
> showed problems was 2.6.17.7 compiled with gcc 3.3.5), and the same
> problem showed itself again, after 2.6.15.6 had run with no problems
> whatsoever for 5 days.
> 
> I'll now give 2.6.16.1 a go (we have that kernel lying around :-)

Hmm, if there's no reproducible case, next best thing is a git bisect
to try to identify potential commits which are causing the problem...
not easy on your production server, I know.  I had believed this to be
a long-standing issue though, I'm sure I've seen it reported before -
we've never had any information to go on to try to diagnose it however.
Jesper's rename hint is the most helpful information we've had so far.

> BTW, what's the significance of the xfs_repair message
> LEAFN node level is 1 inode 827198 bno = 8388608
> (I see a lot more of these this time round).

It basically means a directory inode's btree has got into an invalid
state, somehow.

cheers.

-- 
Nathan
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