On NUMA and clusters systems, the NFS server peeks into NFS requests to find
the file handle.  From that it determines which cluster member or NUMA RAD
should handle the request.

If the RPC authentication length field is too large,the math will come up
with a file handle location outside of the message.  While there is a check
to verify the file handle is within the message, there needs to be one before
picking up the NFS V3 file handle length field.


0 stop_secondary_cpu src/kernel/arch/alpha/cpu.c : 1416 
 1 panic src/kernel/bsd/subr_prf.c : 1509 
 2 event_timeout src/kernel/arch/alpha/cpu.c : 2430 
 3 printf src/kernel/bsd/subr_prf.c : 1018 
 4 panic src/kernel/bsd/subr_prf.c : 1566 
 5 m_copydata src/kernel/bsd/uipc_mbuf.c : 932 
 6 rfs_find_fsid src/kernel/nfs/nfs_server.c : 7430 
 7 rfs_find_clua src/kernel/nfs/nfs_server.c : 7274 
 8 clua_round_robin src/kernel/clua/clua_rr.c : 1378 
 9 clua_udp_input_tunnel src/kernel/clua/clua_udp.c : 438 
 10 clua_ip_input_tunnel src/kernel/clua/clua_ip.c : 190 
 11 ipintr src/kernel/netinet/ip_input.c :1647 
 12 netisr_thread src/kernel/net/netisr.c : 1970

