subsystem f000000
   cpu_mp_unleash(0)... Adding CPU 0, hwref=0, awake=1
Waking up CPU 1 (dev=1)
Waking up CPU 1 via CPU release page 0xc008000026d80200
Adding CPU 1, hwref=1, awake=1
SMP: AP CPU #1 launched
Trying to mount root from nfs:10.88.10.30:blackdragon/netboot/x5000 [rw]...
done.
NFS ROOT: 10.88.10.30:blackdragon/netboot/x5000
   netisr_start(0)... done.
   taskqgroup_bind_if_io_tqg(0)... done.
   taskqgroup_bind_softirq(0)... done.
   taskqgroup_bind_if_config_tqg(0)... done.
   smp_intr_init(0)... done.
subsystem f000001
   epoch_init_smp(0)... done.
subsystem fffffff
ds13070: providing initial system time
   print_caddr_t(&wit_warn)... WARNING: WITNESS option enabled, expect reduced performance.
done.
   start_periodic_resettodr(0)... done.
   oktousecallout(0)... done.
ds13070: providing initial system time
start_init: trying /sbin/init
Interface dtsec0 IP-Address 10.88.10.60 Broadcast 10.88.10.255 
Setting hostuuid: a6d4e49b-373b-11ea-a569-0004a36b4493.
Setting hostid: 0x1f307623.
No suitable dump device was found.
Starting file system checks:
mount_nfs: can't update /var/db/mounttab for 10.88.10.30:blackdragon/netboot/x5000
Mounting local filesystems:.

fatal kernel trap:

   exception       = 0x300 (data storage interrupt)
   virtual address = 0x96370202f960118
   esr             = 0x0
   srr0            = 0xc0080000003ea6c8 (0x3ea6c8)
   srr1            = 0x80029000
   current msr     = 0x80029000
   lr              = 0xc00800000050e9e0 (0x50e9e0)
   frame           = 0xc00800009d92ba60
   curthread       = 0xc00800009e8e1580
          pid = 74, comm = sh

panic: data storage interrupt trap
cpuid = 0
time = 1591382559
KDB: stack backtrace:
0xc00800009d92b680: at kdb_backtrace+0x60
0xc00800009d92b790: at vpanic+0x1e4
0xc00800009d92b840: at panic+0x44
0xc00800009d92b870: at trap+0xfa8
0xc00800009d92b9a0: at powerpc_interrupt+0x1a0
0xc00800009d92ba30: kernel DSI read trap @ 0x96370202f960118 by _lockmgr_assert+0x28: srr1=0x80029000
            r1=0xc00800009d92bce0 cr=0x2242f8db xer=0 ctr=0x3 r2=0x96370202fa9a106 sr=0 frame=0xc00800009d92ba60
0xc00800009d92bce0: at 0xc00800009e8e157c
0xc00800009d92bd50: at binsfree+0x5c
0xc00800009d92bde0: at ncl_bioread+0xa08
0xc00800009d92bfc0: at nfs_read+0x44
0xc00800009d92bff0: at vop_sigdefer+0x60
0xc00800009d92c070: at nfs_vnodeops_bypass+0x28
0xc00800009d92c0a0: at VOP_READ_APV+0x70
0xc00800009d92c120: at vn_read+0x220
0xc00800009d92c1f0: at vn_io_fault_doio+0x78
0xc00800009d92c2a0: at vn_io_fault1+0x1bc
0xc00800009d92c460: at vn_io_fault+0x250
0xc00800009d92c540: at kern_readv+0xc0
0xc00800009d92c5b0: at sys_read+0x98
0xc00800009d92c620: at trap+0x828
0xc00800009d92c750: at powerpc_interrupt+0x1a0
0xc00800009d92c7e0: user SC trap by 0x8103779c0: srr1=0x8002f000
            r1=0xfffffbfffd350 cr=0x42200a82 xer=0x20000000 ctr=0x8103779b0 r2=0x8103a1070 frame=0xc00800009d92c810
KDB: enter: panic
[ thread pid 74 tid 100083 ]
Stopped at      kdb_enter+0x78: ori     r0, r0, 0x0
db>