From: Shay Drory <shayd@xxxxxxxxxx>
[ Upstream commit a1c7c49c2091926962f8c1c866d386febffec5d8 ]
Even when SF devices are supported, the SF device table allocation
can still fail.
In such case mlx5_sf_dev_supported still reports true, but SF device
table is invalid. This can result in NULL table access.
Hence, fix it by adding NULL table check.
Fixes: 1958fc2f0712 ("net/mlx5: SF, Add auxiliary device driver")
Signed-off-by: Shay Drory <shayd@xxxxxxxxxx>
Reviewed-by: Parav Pandit <parav@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c
index 871c2fbe18d39..64bbc18332d56 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sf/dev/dev.c
@@ -28,10 +28,7 @@ bool mlx5_sf_dev_allocated(const struct mlx5_core_dev *dev)
{
struct mlx5_sf_dev_table *table = dev->priv.sf_dev_table;
- if (!mlx5_sf_dev_supported(dev))
- return false;
-
- return !xa_empty(&table->devices);
+ return table && !xa_empty(&table->devices);
}
static ssize_t sfnum_show(struct device *dev, struct device_attribute *attr, char *buf)
--
2.34.1
