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RMDA/cm: Fix missing ib_cm_destroy_id() in ib_cm_insert_listen()

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commit c14dfddbd8 upstream.

The algorithm pre-allocates a cm_id since allocation cannot be done while
holding the cm.lock spinlock, however it doesn't free it on one error
path, leading to a memory leak.

Fixes: 067b171b86 ("IB/cm: Share listening CM IDs")
Link: https://lore.kernel.org/r/20200221152023.GA8680@ziepe.ca
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jason Gunthorpe 2020-02-21 15:20:26 +00:00 committed by Greg Kroah-Hartman
parent 8457a77611
commit 3c1099c80c
1 changed files with 1 additions and 0 deletions
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drivers/infiniband/core/cm.c
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@ -1143,6 +1143,7 @@ struct ib_cm_id *ib_cm_insert_listen(struct ib_device *device,
/* Sharing an ib_cm_id with different handlers is not
* supported */
spin_unlock_irqrestore(&cm.lock, flags);
ib_destroy_cm_id(cm_id);
return ERR_PTR(-EINVAL);
}
atomic_inc(&cm_id_priv->refcount);