Actually looking at this code one more time:
spin_lock_irqsave(&idr_lock, flags);
if (idr_find(&query_idr, query->id) != query) {
spin_unlock_irqrestore(&idr_lock, flags);
return;
}
spin_unlock_irqrestore(&idr_lock, flags);
ib_cancel_mad(query->port->agent, query->id);
I realize that it has a race. I check that the query is still around
inside the spinlock, but the query could complete and be freed in
between the unlock and the call to ib_cancel_mad(). I'll have to add
some reference counting...
- R.
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