| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 66/72] RMDA/cm: Fix missing ib_cm_destroy_id() in ib_cm_insert_listen() | Date | Tue, 10 Mar 2020 13:39:19 +0100 |
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From: Jason Gunthorpe <jgg@mellanox.com>
commit c14dfddbd869bf0c2bafb7ef260c41d9cebbcfec 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: 067b171b8679 ("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>
--- drivers/infiniband/core/cm.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -1073,6 +1073,7 @@ struct ib_cm_id *ib_cm_insert_listen(str /* 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);
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