diff options
| author | Ido Schimmel <idosch@mellanox.com> | 2018-12-19 07:08:50 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-19 21:28:07 +0100 |
| commit | b61cd7c6f992cca57166d0cabe242c49b93609eb (patch) | |
| tree | a1232a8689b45d3c26319b3f10efd63a21150d9a | |
| parent | mlxsw: spectrum_router: Make RIF deletion more robust (diff) | |
| download | linux-b61cd7c6f992cca57166d0cabe242c49b93609eb.tar.xz linux-b61cd7c6f992cca57166d0cabe242c49b93609eb.zip | |
mlxsw: spectrum_router: Hold a reference on RIF's netdev
Previous patches tried to make RIF deletion more robust and avoid
use-after-free situations.
As another precaution, hold a reference on a RIF's netdev and release it
when the RIF is deleted.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 08b60d4b9492..673950933dac 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -6302,6 +6302,7 @@ mlxsw_sp_rif_create(struct mlxsw_sp *mlxsw_sp, err = -ENOMEM; goto err_rif_alloc; } + dev_hold(rif->dev); rif->mlxsw_sp = mlxsw_sp; rif->ops = ops; @@ -6340,6 +6341,7 @@ err_configure: if (fid) mlxsw_sp_fid_put(fid); err_fid_get: + dev_put(rif->dev); kfree(rif); err_rif_alloc: err_rif_index_alloc: @@ -6367,6 +6369,7 @@ static void mlxsw_sp_rif_destroy(struct mlxsw_sp_rif *rif) if (fid) /* Loopback RIFs are not associated with a FID. */ mlxsw_sp_fid_put(fid); + dev_put(rif->dev); kfree(rif); vr->rif_count--; mlxsw_sp_vr_put(mlxsw_sp, vr); |