CVE-2021-47399 ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup

In the Linux kernel, the following vulnerability has been resolved: ixgbe: Fix NULL pointer dereference in ixgbexdpsetup The ixgbe driver currently generates a NULL pointer dereference with some machine online cpus ringfeatureRINGFFDIR.limit = count; It becomes 63. When user use xdp,...