[openib-general] Kernel Oops in user-mad, mad

[Michael S. Tsirkin]

Quoting r. Jack Morgenstein <jackm at dev.mellanox.co.il>:
> Subject: Kernel Oops in user-mad, mad
> 
> We received the following kernel Oops while running regression
> (see console picture attached).
> 
> This looks like a possible race condition between handling umad send completions
> and ib_unregister_mad_agent.
> 
> The Oops is at the list_del line of dequeue_send (user_mad.c: 186)
> Note that ib_unregister_mad_agent invokes unregister_mad_agent->cancel_mads -> agent send handler.
> 
> Is there a possibility that there is a double deletion from a list somewhere?
> 
> Jack
> 
> 
> 

Was this during module unload?
-- 
MST