4.14-stable review patch.  If anyone has any objections, please let me know.


From: Bryan Tan <bryan...@vmware.com>

[ Upstream commit 17748056ce123ee37fb7382bc698fc721e3c4a09 ]

The QP cleanup did not previously call ib_umem_release,
resulting in a user-triggerable kernel resource leak.

Fixes: 29c8d9eba550 ("IB: Add vmw_pvrdma driver")
Reviewed-by: Adit Ranadive <ad...@vmware.com>
Reviewed-by: Aditya Sarwade <asarw...@vmware.com>
Reviewed-by: Jorgen Hansen <jhan...@vmware.com>
Signed-off-by: Bryan Tan <bryan...@vmware.com>
Signed-off-by: Jason Gunthorpe <j...@mellanox.com>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
 drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c
@@ -406,6 +406,13 @@ static void pvrdma_free_qp(struct pvrdma
        wait_event(qp->wait, !atomic_read(&qp->refcnt));
+       if (!qp->is_kernel) {
+               if (qp->rumem)
+                       ib_umem_release(qp->rumem);
+               if (qp->sumem)
+                       ib_umem_release(qp->sumem);
+       }
        pvrdma_page_dir_cleanup(dev, &qp->pdir);

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