After removing the port from port_list, ib_mad_port_close flushes port_priv->wq
before destroying the special QPs. This means that a completion event could
arrive, and queue a new work in this work queue after flush.
Signed-off-by: Eli Cohen <[EMAIL PROTECTED]>
Signed-off-by: Michael S. Tsirkin <[EMAIL PROTECTED]>
Index: latest/drivers/infiniband/core/mad.c
===================================================================
--- latest.orig/drivers/infiniband/core/mad.c
+++ latest/drivers/infiniband/core/mad.c
@@ -2285,8 +2285,17 @@ static void timeout_sends(void *data)
static void ib_mad_thread_completion_handler(struct ib_cq *cq, void *arg)
{
struct ib_mad_port_private *port_priv = cq->cq_context;
+ struct ib_mad_port_private *entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&ib_mad_port_list_lock, flags);
+ list_for_each_entry(entry, &ib_mad_port_list, port_list)
+ if (entry == port_priv) {
+ queue_work(port_priv->wq, &port_priv->work);
+ break;
+ }
- queue_work(port_priv->wq, &port_priv->work);
+ spin_unlock_irqrestore(&ib_mad_port_list_lock, flags);
}
/*
--
MST
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