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FreeBSD 12.0-ALPHA8 #6 2bb7b526e20(projects/power9-pmap)-dirty: Sun Oct 21 00:49:22 CDT 2018
    root@fledgling.east.rtk0.net:/usr/obj/nest/collab_src/powerpc.powerpc64/sys/GENERIC64 powerpc
gcc version 6.4.0 (FreeBSD Ports Collection for powerpc64) 
WARNING: WITNESS option enabled, expect reduced performance.
subsystem 1000000
   0xc000000002cc4d98(0)... 
fatal kernel trap:

   exception       = 0x300 (data storage interrupt)
   virtual address = 0xcd
   dsisr           = 0x80000
   srr0            = 0xc000000002cc8b6c (0x9c8b6c)
   srr1            = 0x9000000000001032
   current msr     = 0x9000000000001032
   lr              = 0xc000000002cce6fc (0x9ce6fc)
   curthread       = 0xc00000000368f480

fatal kernel trap:

   exception       = 0x300 (data storage interrupt)
   virtual address = 0x240
   dsisr           = 0x80000
   srr0            = 0xc000000002d5ae54 (0xa5ae54)
   srr1            = 0x9000000000001032
   current msr     = 0x9000000000001032
   lr              = 0xc000000002d5ae2c (0xa5ae2c)
   curthread       = 0xc00000000368f480

fatal kernel trap:

   exception       = 0x300 (data storage interrupt)
   virtual address = 0x240
   dsisr           = 0x80000
   srr0            = 0xc000000002d5ae54 (0xa5ae54)
   srr1            = 0x9000000000001032
   current msr     = 0x9000000000001032
   lr              = 0xc000000002d5ae2c (0xa5ae2c)
   curthread       = 0xc00000000368f480