ip_queue problem (and ip_conntrack DoS)

[Alexander Demenshin]

Hello James,

On Mon, Jul 10, 2000 at 04:18:48PM +1000, James Morris wrote:

> If you get a chance, let me know if you still get the problem with a
> non-SMP build.

  No, at least I cannot reproduce it even under extremely heavy conditions
  (including case when ip_conntrack is active).

  Seems that it is in SMP locking code, or in APIC emulation - later on
  I'll try to reproduce it on real SMP box....
  
  But what is very strange... I still get "No buffer space available"
  error (on read), but queue is not overflowed. This error appears only
  when I ACCEPT packets (though error rate is very low - so far 8 errors
  on over 4.5M packets).

  Good luck!

/Al