On Tue, Nov 27, 2012 at 06:02:29PM +0000, David Woodhouse wrote:

I'm not running with that patch. This bug exists for br2684 even before
it, and I think also for pppoatm.

Did you use your "atm: br2684: Fix excessive queue bloat" patch?

With that patch for pppoatm the dev->close()/pppoatm_send() race
was much easier to trigger. Maybe with an equivalent patch for br2684
the races are also easier triggerable.

Krzysiek