[PATCH 5.2 221/313] IB/mlx5: Free mpi in mp_slave mode

From: Greg Kroah-Hartman
Date: Thu Oct 03 2019 - 13:09:50 EST


From: Danit Goldberg <danitg@xxxxxxxxxxxx>

commit 5d44adebbb7e785939df3db36ac360f5e8b73e44 upstream.

ib_add_slave_port() allocates a multiport struct but never frees it.
Don't leak memory, free the allocated mpi struct during driver unload.

Cc: <stable@xxxxxxxxxxxxxxx>
Fixes: 32f69e4be269 ("{net, IB}/mlx5: Manage port association for multiport RoCE")
Link: https://lore.kernel.org/r/20190916064818.19823-3-leon@xxxxxxxxxx
Signed-off-by: Danit Goldberg <danitg@xxxxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/infiniband/hw/mlx5/main.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -6829,6 +6829,7 @@ static void mlx5_ib_remove(struct mlx5_c
mlx5_ib_unbind_slave_port(mpi->ibdev, mpi);
list_del(&mpi->list);
mutex_unlock(&mlx5_ib_multiport_mutex);
+ kfree(mpi);
return;
}