From: Bob Pearson <rpearsonhpe@gmail.com>
Date: Wed, 23 Feb 2022 17:07:03 -0600
Subject: RDMA/rxe: Warn if mcast memory is not freed
Patch-mainline: v5.18-rc1
Git-commit: 6a8a2e473b986191f4113c485905ea8462724d58
References: jsc#PED-1111

Print a warning if memory allocated by mcast
is not cleared when the rxe driver is unloaded.

Link: https://lore.kernel.org/r/20220223230706.50332-2-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/sw/rxe/rxe.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -29,6 +29,8 @@ void rxe_dealloc(struct ib_device *ib_de
 	rxe_pool_cleanup(&rxe->mr_pool);
 	rxe_pool_cleanup(&rxe->mw_pool);
 
+	WARN_ON(!RB_EMPTY_ROOT(&rxe->mcg_tree));
+
 	if (rxe->tfm)
 		crypto_free_shash(rxe->tfm);
 }