On Tue, 27 Nov 2007 19:52:24 +0100 Robert Olsson <[EMAIL PROTECTED]> wrote:
> > Hello! > > I've discovered a bug while testing the new multiQ NAPI code. In hi-load > situations when we take down an interface we get a kernel panic. The > oops is below. > > From what I see this happens when driver does napi_disable() and clears > NAPI_STATE_SCHED. In net_rx_action there is a check for work == weight > a sort indirect test but that's now not enough to cover the load situation. > where we have NAPI_STATE_SCHED cleared by e1000_down in my case and still > full quota. Latest git but I'll guess the is the same in all later kernels. > There might be different solutions... one variant is below: It is considered a driver bug in 2.6.24 to call netif_rx_complete (clear NAPI_STATE_SCHED) and do a full quota. That bug already had to be fixed in other drivers, look like e1000 has same problem. -- Stephen Hemminger <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
