Here's for sym cpu_possible_mask in minimal mode:
crash> sym cpu_possible_mask
c14e7d88 (R) cpu_possible_mask
And here's the tail of sym -l:
c175d4e0 (b) sunrpc_table_header
c175d4e4 (B) sctp_assocs_id_lock
c175d4e8 (B) proc_net_sctp
c175d4ec (B) sctp_assocs_id
c175d500 (B) sysctl_sctp_mem
c175d50c (B) sysctl_sctp_rmem
c175d518 (B) sysctl_sctp_wmem
c175d524 (b) __key.46606
c175d524 (b) sctp_ctl_sock
c175d528 (b) sctp_pf_inet6_specific
c175d52c (b) sctp_pf_inet_specific
c175d530 (b) sctp_af_v4_specific
c175d534 (b) sctp_af_v6_specific
c175d538 (b) __key.44408
c175d538 (b) sctp_rand.42824
c175d53c (B) sctp_sockets_allocated
c175d54c (b) sctp_memory_pressure
c175d550 (b) sctp_memory_allocated
c175d554 (b) sctp_sysctl_header
c175d558 (b) zero
c175d55c (b) klist_remove_lock
c175d560 (B) __bss_stop
c175e000 (b) .brk
c175e000 (B) __brk_base
c176e000 (b) .brk.pagetables
c17ee000 (b) .brk.dmi_alloc
c17fe000 (B) __brk_limit
c17fe000 (A) _end