panic: vm_fault_hold: fault on nofault entry, addr: 0xe000000012e00000
cpuid = 30
time = 1537071833
KDB: stack backtrace:
0xe0000000a03df980: at 0xc000000002982744 = .kdb_backtrace+0x5c
0xe0000000a03dfab0: at 0xc00000000292a8d0 = .vpanic+0x1b4
0xe0000000a03dfb70: at 0xc00000000292a99c = .panic+0x38
0xe0000000a03dfc00: at 0xc000000002c3d948 = .vm_fault_hold+0x198
0xe0000000a03dfe10: at 0xc000000002c3f9ac = .vm_fault+0x94
0xe0000000a03dfec0: at 0xc000000002cbae44 = .cpu_fetch_syscall_args+0x3f0
0xe0000000a03dff70: at 0xc000000002cbc1a0 = .trap+0xf94
0xe0000000a03e0140: at 0xc000000002caf828 = .powerpc_interrupt+0x270
0xe0000000a03e01f0: kernel DSI write trap @ 0xe000000012e00000 by 0xc000000002c79470 = .memcpy+0x98: srr1=0x9000000000009032
            r1=0xe0000000a03e04a0 cr=0x42000088 xer=0x20040000 ctr=0x200 r2=0xc0000000036cef20 sr=0x42000000
0xe0000000a03e04a0: at -0x4
0xe0000000a03e04e0: at 0xc000000002ca6054 = .bus_dmamap_sync+0x64
0xe0000000a03e0590: at 0xc00000000269c80c = .nvme_qpair_submit_tracker+0x3a8
0xe0000000a03e0630: at 0xc00000000269da8c = .nvme_qpair_process_completions+0x114
0xe0000000a03e06d0: at 0xc00000000269dd40 = .nvme_qpair_process_completions+0x3c8
0xe0000000a03e0750: at 0xc0000000028edfd4 = .intr_event_handle+0x4f0
0xe0000000a03e0840: at 0xc0000000028eaa90 = .fork_exit+0xd8
0xe0000000a03e0900: at 0xc000000002cba5e0 = .fork_trampoline+0x10
0xe0000000a03e0930: at -0x4
KDB: enter: panic
[ thread pid 12 tid 100205 ]
Stopped at      0xc000000002982310 = .kdb_enter+0x60:   ld      r2, r1, 0x28
db>