On 9/1/23 11:27, Jiasheng Jiang wrote:
> Add check for the return value of alloc_can_err_skb in order to
> avoid NULL pointer dereference.
>
> Fixes: 8537257874e9 ("can: etas_es58x: add core support for ETAS ES58X CAN USB interfaces")
> Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
> ---
> drivers/net/can/usb/etas_es58x/es58x_core.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/net/can/usb/etas_es58x/es58x_core.c b/drivers/net/can/usb/etas_es58x/es58x_core.c
> index 0c7f7505632c..d694cb22d9f4 100644
> --- a/drivers/net/can/usb/etas_es58x/es58x_core.c
> +++ b/drivers/net/can/usb/etas_es58x/es58x_core.c
> @@ -680,6 +680,8 @@ int es58x_rx_err_msg(struct net_device *netdev, enum es58x_err error,
> }
>
> skb = alloc_can_err_skb(netdev, &cf);
> + if (!skb)
> + return -ENOMEM;
Should you adjust the stats for dropped packets as well?
>
> switch (error) {
> case ES58X_ERR_OK: /* 0: No error */
