Re: panic while doing lots of IO on lpfc

From: Meelis Roos
Date: Thu Oct 09 2008 - 10:40:08 EST


> > Bad page state in process 'dd'
> > page:ffffe200005130c0 flags:0x4000000000000009 mapping:0000000000000000
> > mapcount:0 count:0
> > Trying to fix it up, but a reboot is needed
>
> Tried to lock a free page. Is the address of the page always the same,
> and the first bit in flags always set after each reboot? Does the
> machine pass a memtest?

The machine has worked transporting lots of data and compiling many
kernels a week, but I haven't done a memtest in more than a year.

The messages have scrolled away in other cases.

> It could be that someone actually tried to lock the page, though...
> You could try putting a BUG_ON(!page_count(page)) at the start of
> the trylock_page function.
>
> Some more messages might provide more clues.

Will try netconsole after haveing finished the same test with Qlogic
HBA.

--
Meelis Roos (mroos@xxxxxxxx)
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