Re: 2.6.18-rc3-git3 - XFS - BUG: unable to handle kernel NULL pointer dereference at virtual address 00000078

[Nathan Scott <nathans@xxxxxxx>]

On Tue, Aug 15, 2006 at 01:42:27PM +0200, Jesper Juhl wrote:
> On 15/08/06, Nathan Scott <nathans@xxxxxxx> wrote:
> > If you can get the source
> > and target names in the rename that'll help alot too... I can
> > explain how to use KDB to get that, but maybe you have another
> > debugger handy already?
> >
> An explanation of how exactely to do that would be greatly appreciated.

- patch in KDB
- echo 127 > /proc/sys/fs/xfs/panic_mask
[ filesystem shutdown now == panic ]
- kdb> bt
[ pick out parameters to rename from the backtrace ]
- kdb> md 0xXXX
[ gives a memory dump of the pointers to pathnames ]

cheers.

-- 
Nathan