Re: [PATCH net] ice: Fix freeing uninitialized pointers

Jiri Pirko
2024-03-18T07:58:30Z

Sat, Mar 16, 2024 at 10:44:40AM CET, dan.carpenter@linaro.org wrote:
>Automatically cleaned up pointers need to be initialized before exiting
>their scope. In this case, they need to be initialized to NULL before
>any return statement.
>
>Fixes: 90f821d72e11 ("ice: avoid unnecessary devm_ usage")
>Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
>---
> drivers/net/ethernet/intel/ice/ice_common.c | 4 ++--
> drivers/net/ethernet/intel/ice/ice_ethtool.c | 2 +-
> 2 files changed, 3 insertions(+), 3 deletions(-)
>
>diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
>index 4d8111aeb0ff..4b27d2bc2912 100644
>--- a/drivers/net/ethernet/intel/ice/ice_common.c
>+++ b/drivers/net/ethernet/intel/ice/ice_common.c
>@@ -1002,8 +1002,8 @@ static void ice_get_itr_intrl_gran(struct ice_hw *hw)
> */
> int ice_init_hw(struct ice_hw *hw)
> {
>- struct ice_aqc_get_phy_caps_data *pcaps __free(kfree);
>- void *mac_buf __free(kfree);
>+ struct ice_aqc_get_phy_caps_data *pcaps __free(kfree) = NULL;
>+ void *mac_buf __free(kfree) = NULL;
> u16 mac_buf_len;
> int status;
>

How about similar issues in:
ice_set_fc()
ice_cfg_phy_fec()
?

>diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool.c b/drivers/net/ethernet/intel/ice/ice_ethtool.c
>index 255a9c8151b4..78b833b3e1d7 100644
>--- a/drivers/net/ethernet/intel/ice/ice_ethtool.c
>+++ b/drivers/net/ethernet/intel/ice/ice_ethtool.c
>@@ -941,11 +941,11 @@ static u64 ice_loopback_test(struct net_device *netdev)
> struct ice_netdev_priv *np = netdev_priv(netdev);
> struct ice_vsi *orig_vsi = np->vsi, *test_vsi;
> struct ice_pf *pf = orig_vsi->back;
>+ u8 *tx_frame __free(kfree) = NULL;
> u8 broadcast[ETH_ALEN], ret = 0;
> int num_frames, valid_frames;
> struct ice_tx_ring *tx_ring;
> struct ice_rx_ring *rx_ring;
>- u8 *tx_frame __free(kfree);
> int i;
>
> netdev_info(netdev, "loopback test\n");
>--
>2.43.0
>
>