When the last reference to an ST table entry is dropped,
mlx5_st_dealloc_index() removed the entry from idx_xa but leaked the
backing mlx5_st_idx_data allocation. Repeated alloc/dealloc cycles
therefore accumulate one struct mlx5_st_idx_data per cycle.
Free idx_data after the xa_erase() so the lifetime of the bookkeeping
struct matches the lifetime of the ST entry it tracks.
Fixes: 888a7776f4fb ("net/mlx5: Add support for device steering tag")
Signed-off-by: Zhiping Zhang <redacted>
---
drivers/net/ethernet/mellanox/mlx5/core/lib/st.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/st.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/st.c
index 997be91f0a13..7cedc348790d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/st.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/st.c
@@ -175,6 +175,7 @@ int mlx5_st_dealloc_index(struct mlx5_core_dev *dev, u16 st_index)
if (refcount_dec_and_test(&idx_data->usecount)) {
xa_erase(&st->idx_xa, st_index);
+ kfree(idx_data);
/* We leave PCI config space as was before, no mkey will refer to it */
}
--
2.53.0-Meta