[Lguest] rmmod lg causes system to crash
Rusty Russell
rusty at rustcorp.com.au
Fri Dec 28 22:22:48 EST 2007
On Friday 28 December 2007 19:39:50 Balaji Rao wrote:
> Hi rusty,
>
> I get an error saying bad pgd 00637027 when i do an rmmod lg and sooner or
> later i get a recursive fault and the system hangs.
Hi Balaji,
I have reproduced the crash on rmmod. It's late here, so I don't have any
more results, but that number indicates that the USER bit is set, which
shouldn't be set in a pmd or pgd.
> What happens is, when it tries to unmap pmds, the pmd_none_or_clear_bad
> prints out this message.
Wouldn't that print out 'bad pmd' then?
I'll chase this down tomorrow, thanks!
Rusty.
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