Today's RELENG_5_4 and 'lock cmpxchgl'

[Marc Olzheim]

On Sun, Jul 03, 2005 at 10:38:58AM +0200, Philippe PEGON wrote:
> >The panic appears to be an instance of a known bug in 5.4 (and
> >INVARIANTS will not fix it, but may just delay the inevitable by
> >changing timings).  See Doug White's recent emails which point to a
> >patch you should test.
> 
> If you think about this mail :
> 
> http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/016165.html
> 
> and follow the thread, you will see that this patch doesn't solve the 
> problem.
> The last mail which I can see from doug white about this problem is :
> 
> http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/016495.html
> 
> for the moment, it seems that there is no solution for 5.x

Well, the bug hasn't bitten me since I reactivated INVARIANTS, so I'll
keep this workaround active for now. :-/ If I don't enable INVARIANTS,
as soon as I start 'screen', it's a panic.

Marc
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