kernel: NFSD: fix use-after-free on source server when doing inter-server copy

In the Linux kernel, the following vulnerability has been resolved: NFSD: fix use-after-free on source server when doing inter-server copy Use-after-free occurred when the laundromat tried to free expired cpntfstate entry on the s2scpstateids list after inter-server copy completed. The sccplist...