panic: vm_fault_hold: fault on nofault entry, addr: 0xe000000012768000
cpuid = 0
time = 1537075991
KDB: stack backtrace:
0xe0000000a03c4980: at 0xc00000000298273c = .kdb_backtrace+0x5c
0xe0000000a03c4ab0: at 0xc00000000292a8c8 = .vpanic+0x1b4
0xe0000000a03c4b70: at 0xc00000000292a994 = .panic+0x38
0xe0000000a03c4c00: at 0xc000000002c3d940 = .vm_fault_hold+0x198
0xe0000000a03c4e10: at 0xc000000002c3f9a4 = .vm_fault+0x94
0xe0000000a03c4ec0: at 0xc000000002cbae34 = .cpu_fetch_syscall_args+0x3f0
0xe0000000a03c4f70: at 0xc000000002cbc190 = .trap+0xf94
0xe0000000a03c5140: at 0xc000000002caf818 = .powerpc_interrupt+0x270
0xe0000000a03c51f0: kernel DSI write trap @ 0xe000000012768000 by 0xc000000002c79468 = .memcpy+0x98: srr1=0x9000000000009032
            r1=0xe0000000a03c54a0 cr=0x42000088 xer=0x20040000 ctr=0x200 r2=0xc0000000036cef20 sr=0x42000000
0xe0000000a03c54a0: at -0x4
0xe0000000a03c54e0: at 0xc000000002ca6044 = .bus_dmamap_sync+0x64
0xe0000000a03c5590: at 0xc00000000269c80c = .nvme_qpair_submit_tracker+0x3a8
0xe0000000a03c5630: at 0xc00000000269da84 = .nvme_qpair_process_completions+0x114
0xe0000000a03c56d0: at 0xc00000000269dd38 = .nvme_qpair_process_completions+0x3c8
0xe0000000a03c5750: at 0xc0000000028edfcc = .intr_event_handle+0x4f0
0xe0000000a03c5840: at 0xc0000000028eaa88 = .fork_exit+0xd8
0xe0000000a03c5900: at 0xc000000002cba5d0 = .fork_trampoline+0x10
0xe0000000a03c5930: at -0x4
KDB: enter: panic
[ thread pid 12 tid 100202 ]
Stopped at      0xc000000002982308 = .kdb_enter+0x60:   ld      r2, r1, 0x28
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