TCP socket shutdown race condition

[Mike Silbersack]

On Thu, 14 Aug 2003, John Baldwin wrote:

> In that case, CPU 2 uses an IPI to "push" the interrupt over to CPU 1
> since CPU 1 is in the kernel.  CPU 2 will not handle an interrupt unless
> it can get the giant lock.
>
> --
>
> John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/

So on 4.x, any SMP race is probably also a UP race, but we just don't see
it because UP can't preempt.

Well, I guess the spl() fix is probably going to be the quickest here
then, please send it to me once you've pounded on it, Ed.

Mike "Silby" Silbersack