Copyright (c) 1992-2018 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD is a registered trademark of The FreeBSD Foundation. FreeBSD 12.0-ALPHA8 #11 1804163339f(projects/power9-pmap)-dirty: Sun Oct 21 02:04:20 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)... vm_set_page_size(); virtual_avail = vm_page_startup(virtual_avail); handled kernel trap: exception = 0x300 (data storage interrupt) virtual address = 0xc000200ffccc0000 dsisr = 0x42000000 srr0 = 0xc000000002d0b6dc (0xa0b6dc) srr1 = 0x9000000000001032 current msr = 0x9000000000001032 lr = 0xc000000002cda1a8 (0x9da1a8) curthread = 0xc000000003691480 handled kernel trap: exception = 0x300 (data storage interrupt) virtual address = 0xcd dsisr = 0x80000 srr0 = 0xc000000002cc8c1c (0x9c8c1c) srr1 = 0x9000000000001032 current msr = 0x9000000000001032 lr = 0xc000000002cce7ac (0x9ce7ac) curthread = 0xc000000003691480 fatal kernel trap: exception = 0x300 (data storage interrupt) virtual address = 0xcd dsisr = 0x80000 srr0 = 0xc000000002cc8c1c (0x9c8c1c) srr1 = 0x9000000000001032 current msr = 0x9000000000001032 lr = 0xc000000002cce7ac (0x9ce7ac) curthread = 0xc000000003691480 [ thread pid 0 tid 0 ] Stopped at 0xc000000002cc8c1c db> show registers r0 0xc000000002cce7ac r1 0xc00000000007af70 r2 0xc0000000034dc000 r3 0 r4 0xc0000000031201b0 r5 0xfeb r6 0xfeb r7 0 r8 0x1 r9 0xc00000000007b068 r10 0xc00000000007b1cc r11 0 r12 0x20001232 r13 0xc000000003691480 r14 0xc00000000007b1c8 r15 0xc00000000007b1cc r16 0x12 r17 0xc000000003880580 r18 0 r19 0xc0000000031201b0 r20 0xc0000000031201b0 r21 0 r22 0 r23 0x1 r24 0xc000200ffccc0000 r25 0xc000200ffccc0000 r26 0xffffffffffffffff r27 0xc00000000007b238 r28 0xc000200ffccc0000 r29 0x12 r30 0 r31 0xc00000000007af70 srr0 0xc000000002cc8c1c srr1 0x9000000000001032 lr 0xc000000002cce7ac ctr 0xc000000002d147a8 cr 0x20022232 xer 0 dar 0xcd dsisr 0x80000 0xc000000002cc8c1c db>