If there're more MR(Memroy Region)'s than the size of per-queue cache, the
cache can be overflowed and corrupt the following data structure in
mlx5_txq_data.
Fixes: 6e78005a9b30 ("net/mlx5: add reference counter on DPDK Tx queues")
Cc: [email protected]
Signed-off-by: Yongseok Koh <[email protected]>
Acked-by: Nelio Laranjeiro <[email protected]>
---
drivers/net/mlx5/mlx5_trigger.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/mlx5/mlx5_trigger.c b/drivers/net/mlx5/mlx5_trigger.c
index ed80a6bee..88f60a01d 100644
--- a/drivers/net/mlx5/mlx5_trigger.c
+++ b/drivers/net/mlx5/mlx5_trigger.c
@@ -64,8 +64,11 @@ priv_txq_start(struct priv *priv)
if (!txq_ctrl)
continue;
- LIST_FOREACH(mr, &priv->mr, next)
+ LIST_FOREACH(mr, &priv->mr, next) {
priv_txq_mp2mr_reg(priv, &txq_ctrl->txq, mr->mp, idx++);
+ if (idx == MLX5_PMD_TX_MP_CACHE)
+ break;
+ }
txq_alloc_elts(txq_ctrl);
txq_ctrl->ibv = mlx5_priv_txq_ibv_new(priv, i);
if (!txq_ctrl->ibv) {
--
2.11.0
