idr_find() can return a NULL value to 'flow' which is used without a check. The patch adds a check to avoid potential NULL pointer dereference. Signed-off-by: Aditya Pakki <pakki001@xxxxxxx> --- drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c b/drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c index 5cf5f2a9d51f..3df468acdffc 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fpga/tls.c @@ -226,6 +226,8 @@ int mlx5_fpga_tls_resync_rx(struct mlx5_core_dev *mdev, u32 handle, u32 seq, rcu_read_lock(); flow = idr_find(&mdev->fpga->tls->rx_idr, ntohl(handle)); rcu_read_unlock(); + if (!flow) + return -EINVAL; mlx5_fpga_tls_flow_to_cmd(flow, cmd); MLX5_SET(tls_cmd, cmd, swid, ntohl(handle)); -- 2.17.1
