Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1299170

Re: [PATCH] ixgbe: correctly handling failed allocation

Show all headers | View raw

On Tue, Dec 29, 2015 at 1:55 PM, Insu Yun <wuninsu@gmail.com> wrote:
> Since kzalloc can be failed in memory pressure,
> NULL derefence could be happened.
>
> Signed-off-by: Insu Yun <wuninsu@gmail.com>
> ---
>  drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> index aed8d02..aa5eda0 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
> @@ -5331,6 +5331,8 @@ static int ixgbe_sw_init(struct ixgbe_adapter *adapter)
>         adapter->mac_table = kzalloc(sizeof(struct ixgbe_mac_addr) *
>                                      hw->mac.num_rar_entries,
>                                      GFP_ATOMIC);
> +       if (!adapter->mac_table)
> +               return -ENOMEM;
>
>         /* Set MAC specific capability flags and exceptions */
>         switch (hw->mac.type) {
> --
> 1.9.1

That change is already present in the current net-next.

Take a look at commit 530fd82a9fea ("ixgbe: Return error on failure to
allocate mac_table").

- Alex
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] ixgbe: correctly handling failed allocation Insu Yun <wuninsu@gmail.com> - 2015-12-29 23:00 +0100
  Re: [PATCH] ixgbe: correctly handling failed allocation Alexander Duyck <alexander.duyck@gmail.com> - 2015-12-30 01:00 +0100

csiph-web