net/mlxfw: Verify FSM error code translation doesn't exceed array size

Array mlxfw_fsm_state_err_str contains value to string translation, when
values are provided by mlxfw_dev. If value is larger than
MLXFW_FSM_STATE_ERR_MAX, return "unknown error" as expected instead of
reading an address than exceed array size.

Fixes: 410ed13cae ("Add the mlxfw module for Mellanox firmware flash process")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Eran Ben Elisha 2019-11-17 10:18:59 +02:00 committed by Saeed Mahameed
parent b7eca94032
commit 30e9e0550b

View File

@ -66,6 +66,8 @@ static int mlxfw_fsm_state_wait(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
return err;
if (fsm_state_err != MLXFW_FSM_STATE_ERR_OK) {
fsm_state_err = min_t(enum mlxfw_fsm_state_err,
fsm_state_err, MLXFW_FSM_STATE_ERR_MAX);
pr_err("Firmware flash failed: %s\n",
mlxfw_fsm_state_err_str[fsm_state_err]);
NL_SET_ERR_MSG_MOD(extack, "Firmware flash failed");