CVE-2025-21806 net: let net.core.dev_weight always be non-zero

In the Linux kernel, the following vulnerability has been resolved: net: let net.core.devweight always be non-zero The following problem was encountered during stability test: NULL netdevice: NAPI poll function processbacklog+0x0/0x530 \ returned 1, exceeding its budget of 0. ------------ cut her...