Re: [Fwd: Re: possible bug x86 2.4.2 SMP in IP receive stack]

[Bob Felderman <feldy@xxxxxxxx>]

=> Bob Felderman wrote:
=> > 
=> > If I only use a single CPU with the same kernel, I do NOT have
=> > any problems.
=> 
=> Oh.
=> 
=> Your driver doesn't appear to have any SMP locking.  The
=> same skb can be fed to the network stack twice.
=> 

I wondered the same thing.

Earlier today (before I sent you the oopses) I 
added a mutex to 
surround my linux interrupt routine. So the oopses you
have are with a mutex around the interrupt routine.

I'm going to check again to make sure it is really 
enforcing serialization.

Bob