This is a note to let you know that I've just added the patch titled
net/mlx5e: Nullify table pointer when failing to create
to the 6.1-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-nullify-table-pointer-when-failing-to-crea.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 847402e7482c529812cf1696ac6a97f3e39d1162
Author: Aya Levin <ayal@xxxxxxxxxx>
Date: Sun Mar 12 16:37:36 2023 +0200
net/mlx5e: Nullify table pointer when failing to create
[ Upstream commit 1b540decd03acd736693aabb6cb46c71fca38ae6 ]
On failing to create promisc flow steering table, the pointer is
returned with an error. Nullify it so unloading the driver won't try to
destroy a non existing table.
Failing to create promisc table may happen over BF devices when the ARM
side is going through a firmware tear down. The host side start a
reload flow. While the driver unloads, it tries to remove the promisc
table. Remove WARN in this state as it is a valid error flow.
Fixes: 1c46d7409f30 ("net/mlx5e: Optimize promiscuous mode")
Signed-off-by: Aya Levin <ayal@xxxxxxxxxx>
Reviewed-by: Tariq Toukan <tariqt@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 edbe22d93c992..eba601487eb79 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_fs.c
@@ -776,6 +776,7 @@ static int mlx5e_create_promisc_table(struct mlx5e_flow_steering *fs)
ft->t = mlx5_create_auto_grouped_flow_table(fs->ns, &ft_attr);
if (IS_ERR(ft->t)) {
err = PTR_ERR(ft->t);
+ ft->t = NULL;
fs_err(fs, "fail to create promisc table err=%d\n", err);
return err;
}
@@ -803,7 +804,7 @@ static void mlx5e_del_promisc_rule(struct mlx5e_flow_steering *fs)
static void mlx5e_destroy_promisc_table(struct mlx5e_flow_steering *fs)
{
- if (WARN(!fs->promisc.ft.t, "Trying to remove non-existing promiscuous table"))
+ if (!fs->promisc.ft.t)
return;
mlx5e_del_promisc_rule(fs);
mlx5_destroy_flow_table(fs->promisc.ft.t);
