From 7ce6095e3bff8e20ce018b050960b527e298f7df Mon Sep 17 00:00:00 2001 From: Leon Romanovsky Date: Mon, 31 May 2021 19:04:44 +0300 Subject: RDMA/mlx5: Don't add slave port to unaffiliated list The mlx5_ib_bind_slave_port() doesn't remove multiport device from the unaffiliated list, but mlx5_ib_unbind_slave_port() did it. This unbalanced flow caused to the situation where mlx5_ib_unaffiliated_port_list was changed during iteration. Fixes: 32f69e4be269 ("{net, IB}/mlx5: Manage port association for multiport RoCE") Link: https://lore.kernel.org/r/2726e6603b1e6ecfe76aa5a12a063af72173bcf7.1622477058.git.leonro@nvidia.com Reported-by: Dan Carpenter Signed-off-by: Leon Romanovsky Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/mlx5/main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 312aa731860d..18f5fc8fc23d 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -3182,8 +3182,6 @@ static void mlx5_ib_unbind_slave_port(struct mlx5_ib_dev *ibdev, port->mp.mpi = NULL; - list_add_tail(&mpi->list, &mlx5_ib_unaffiliated_port_list); - spin_unlock(&port->mp.mpi_lock); err = mlx5_nic_vport_unaffiliate_multiport(mpi->mdev); @@ -3332,6 +3330,8 @@ static void mlx5_ib_cleanup_multiport_master(struct mlx5_ib_dev *dev) mlx5_ib_dbg(dev, "unbinding port_num: %u\n", i + 1); mlx5_ib_unbind_slave_port(dev, dev->port[i].mp.mpi); + list_add_tail(&dev->port[i].mp.mpi->list, + &mlx5_ib_unaffiliated_port_list); } } } -- cgit v1.2.3