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RDMA/cm: Abort loop in case of CM dequeue

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In case CM work list is empty, the work pointer will be NULL,
so instead of kernel crash it is better to abort processing
of works.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Leon Romanovsky 2018-05-29 14:56:16 +03:00 • committed by Doug Ledford
parent cd13a399e6
commit 2f5059a7af
1 changed files with 3 additions and 1 deletions
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4
drivers/infiniband/core/cm.c
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@ -1707,7 +1707,9 @@ static void cm_process_work(struct cm_id_private *cm_id_priv,
spin_lock_irq(&cm_id_priv->lock);
work = cm_dequeue_work(cm_id_priv);
spin_unlock_irq(&cm_id_priv->lock);
BUG_ON(!work);
if (!work)
return;
ret = cm_id_priv->id.cm_handler(&cm_id_priv->id,
&work->cm_event);
cm_free_work(work);