Patch "net/mlx5e: Fix error flow in representor failing to add vport rx rule" has been added to the 6.2-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    net/mlx5e: Fix error flow in representor failing to add vport rx rule

to the 6.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-mlx5e-fix-error-flow-in-representor-failing-to-a.patch
and it can be found in the queue-6.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 125bb6cf81b6f3ce3a43002d0fb5592cab6016b8
Author: Roi Dayan <roid@xxxxxxxxxx>
Date:   Wed Mar 29 15:24:32 2023 +0300

    net/mlx5e: Fix error flow in representor failing to add vport rx rule
    
    [ Upstream commit 0a6b069cc60d68d33b4f6e7dd7f1adc3ec749766 ]
    
    On representor init rx error flow the flow steering pointer is being
    released so mlx5e_attach_netdev() doesn't have a valid fs pointer
    in its error flow. Make sure the pointer is nullified when released
    and add a check in mlx5e_fs_cleanup() to verify fs is not null
    as representor cleanup callback would be called anyway.
    
    Fixes: af8bbf730068 ("net/mlx5e: Convert mlx5e_flow_steering member of mlx5e_priv to pointer")
    Signed-off-by: Roi Dayan <roid@xxxxxxxxxx>
    Reviewed-by: Maor Dickman <maord@xxxxxxxxxx>
    Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
index 7cd36f4ac3efc..edbe22d93c992 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -1471,6 +1471,8 @@ struct mlx5e_flow_steering *mlx5e_fs_init(const struct mlx5e_profile *profile,
 
 void mlx5e_fs_cleanup(struct mlx5e_flow_steering *fs)
 {
+	if (!fs)
+		return;
 	mlx5e_fs_ethtool_free(fs);
 	mlx5e_fs_tc_free(fs);
 	mlx5e_fs_vlan_free(fs);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 1f4233b2842f7..53eba076c53fc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5208,6 +5208,7 @@ static void mlx5e_nic_cleanup(struct mlx5e_priv *priv)
 	mlx5e_health_destroy_reporters(priv);
 	mlx5e_ktls_cleanup(priv);
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 }
 
 static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 301a734b7c6a7..21426decc4bde 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -822,6 +822,7 @@ static int mlx5e_init_ul_rep(struct mlx5_core_dev *mdev,
 static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
 {
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 }
 
 static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
@@ -988,6 +989,7 @@ static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)
 	priv->rx_res = NULL;
 err_free_fs:
 	mlx5e_fs_cleanup(priv->fs);
+	priv->fs = NULL;
 	return err;
 }