> It happens only when ib interfaces are slaves of a bonding device.
 > I thought before that the stuck is in napi_disable() but it's almost right.
 > I put prints before and after call to napi_disable and see that it is called 
 > twice.
 > I'll try to investigate in this direction.
 > 
 > ib0: stopping interface
 > ib0: before napi_disable
 > ib0: after napi_disable
 > ib0: downing ib_dev
 > ib0: All sends and receives done.
 > ib0: stopping interface
 > ib0: before napi_disable

Yes, two napi_disable()s in a row without a matching napi_enable()
will deadlock.  I guess the question is why the ipoib interface is
being stopped twice.

If you just take the net-2.6.24 tree (without bonding patches), does
bonding for ethernet interfaces work OK, or is there a similar problem
with double napi_disable()?  How about bonding of ethernet after this
batch of bonding patches?

 - R.
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