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[5.15,166/207] net/mlx5: E-Switch, Check group pointer before reading bw_share value

Message ID 20211206145616.018015013@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 6, 2021, 2:57 p.m. UTC 
From: Dmytro Linkin <dlinkin@nvidia.com>

[ Upstream commit 5c4e8ae7aa4875041102406801ee434e6c581aef ]

If log_esw_max_sched_depth is not supported group pointer of the vport
is NULL. Hence, check the pointer before reading bw_share value.

Fixes: 0fe132eac38c ("net/mlx5: E-switch, Allow to add vports to rate groups")
Signed-off-by: Dmytro Linkin <dlinkin@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index 4501e3d737f80..d377ddc70fc70 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
@@ -130,7 +130,7 @@  static u32 esw_qos_calculate_min_rate_divider(struct mlx5_eswitch *esw,
 	/* If vports min rate divider is 0 but their group has bw_share configured, then
 	 * need to set bw_share for vports to minimal value.
 	 */
-	if (!group_level && !max_guarantee && group->bw_share)
+	if (!group_level && !max_guarantee && group && group->bw_share)
 		return 1;
 	return 0;
 }