IB/uverbs: Fix leak of XRC target QPs

commit 5b810a242c28e1d8d64d718cebe75b79d86a0b2d upstream.

The real QP is destroyed in case of the ref count reaches zero, but
for XRC target QPs this call was missed and caused to QP leaks.

Let's call to destroy for all flows.

Fixes: 0e0ec7e0638e ('RDMA/core: Export ib_open_qp() to share XRC...')
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index d625c82d6c82db0e7af16bf312df1bd8dd123c62..7becef27cbbe7d1cffcc4d130d4e13a4fcd49eb5 100644 (file)
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -244,12 +244,9 @@ static int ib_uverbs_cleanup_ucontext(struct ib_uverbs_file *file,
                        container_of(uobj, struct ib_uqp_object, uevent.uobject);
 
                idr_remove_uobj(&ib_uverbs_qp_idr, uobj);
-               if (qp != qp->real_qp) {
-                       ib_close_qp(qp);
-               } else {
+               if (qp == qp->real_qp)
                        ib_uverbs_detach_umcast(qp, uqp);
-                       ib_destroy_qp(qp);
-               }
+               ib_destroy_qp(qp);
                ib_uverbs_release_uevent(file, &uqp->uevent);
                kfree(uqp);
        }