[ 263.539894] kexec_core: Starting new kernel [ 346.193029820,5] OPAL: Switch to big-endian OS Is this thing on? *tap tap* startkernel = c000000002400100 endkernel = c000000003a3f8c8 [ 346.213455652,5] OPAL: Switch to big-endian OS KDB: debugger backends: ddb KDB: current backend: ddb mmu_radix_bootstrap pregions[0].mr_start=0 pregions[0].mr_size=1000000000 pregions[1].mr_start=200000000000 pregions[1].mr_size=1000000000 regions[0].mr_start=0000000000000000 regions[0].mr_size=0000000030000000 regions[1].mr_start=00000000384c2000 regions[1].mr_size=0000000047aee000 regions[2].mr_start=000000007fffd000 regions[2].mr_size=000000007fff3000 regions[3].mr_start=0000000100000000 regions[3].mr_size=0000000f00000000 regions[4].mr_start=0000200002b44000 regions[4].mr_size=0000000ffa1bc000 regions[5].mr_start=0000200ffe000000 regions[5].mr_size=0000000001800000 phys_avail[0]=00002f00 - phys_avail[1]=02400000 phys_avail[2]=384c2000 - phys_avail[3]=7ffb0000 phys_avail[4]=7fffd000 - phys_avail[5]=ffff0000 phys_avail[6]=100000000 - phys_avail[7]=1000000000 phys_avail[8]=200002b44000 - phys_avail[9]=200ffcd00000 phys_avail[10]=200ffe000000 - phys_avail[11]=200fff800000 phys_avail[12]=03a40000 - phys_avail[13]=30000000 l1phys=20000 l2pages=1 l2phys=5000 hwphyssz=0 pml1[0]= 5000 dmap 0 -> 1000000000 dmap 200000000000 -> 201000000000 phys_avail[0]=00002f00 - phys_avail[1]=00003000 phys_avail[2]=00006000 - phys_avail[3]=00010000 phys_avail[4]=00030000 - phys_avail[5]=01000000 phys_avail[6]=100000000 - phys_avail[7]=1000000000 phys_avail[8]=200002b44000 - phys_avail[9]=200ffcd00000 phys_avail[10]=200ffe000000 - phys_avail[11]=200fff800000 phys_avail[12]=03a40000 - phys_avail[13]=30000000 kernel_pmap pml1 0xc000000000020000 early bootstrap complete mmu_parttab_init parttab: 0xc000000000010000 setting ptcr 10000 set nested mmu ptcr mmu_radix_parttab_init construct pagetab mmu_radix_parttab_init install pagetab c0000000000200ad mmu_parttab_update isa3_parttab 0xc000000000010000 lpid 0 pagetab c0000000000200ad proctab 0 parttab inited powernv init complete mmu_parttab_update isa3_parttab 0xc000000000010000 lpid 0 pagetab c0000000000200ad proctab 800000000100000c process table 0xc000000001000000 and kernel radix PDE: 0xc000000000020000 mmu_radix_late_bootstrap enter mmu_radix_late_bootstrap set kstack mmu_radix_bootstrap done enabling translation translation enabled got env bzero 0xc00000000007bad0 set curpcb 0xc00000000007bad0 kstack: c000000000070000 setup thread ---<>--- inited KDB: enter: Let's go! [ thread pid 0 tid 0 ] Stopped at 0xc00000000299558c db> continue 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 #7 fcccd218cd5(projects/power9-pmap)-dirty: Sun Oct 21 01:15:11 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 = 0xc000000003691480 [ thread pid 0 tid 0 ] Stopped at 0xc000000002cc8b6c db> show registers r0 0xc000000002cce6fc r1 0xc00000000007af10 r2 0xc0000000034dc000 r3 0 r4 0xc00000000311ffa8 r5 0xfeb r6 0xfeb r7 0 r8 0x1 r9 0xc00000000007b008 r10 0xc00000000007b16c r11 0x1 r12 0x20001032 r13 0xc000000003691480 r14 0xc00000000007b168 r15 0xc00000000007b16c r16 0x12 r17 0xc000000003880580 r18 0 r19 0xc00000000311ffa8 r20 0xc00000000311ffa8 r21 0 r22 0 r23 0x1 r24 0xc000200ffccc0000 r25 0xc000200ffccc0000 r26 0xffffffffffffffff r27 0xc00000000007b1d8 r28 0xc000200ffccc0000 r29 0x12 r30 0 r31 0xc00000000007af10 srr0 0xc000000002cc8b6c srr1 0x9000000000001032 lr 0xc000000002cce6fc ctr 0xc000000002d146f8 cr 0x20022032 xer 0 dar 0xcd dsisr 0x80000 0xc000000002cc8b6c db> bt Tracing pid 0 tid 0 td 0xc000000003691480 Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007af10 But really 0xc00000000007af10 0xc00000000007af40: at 0xc000000002cce6f8 Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007af40 But really 0xc00000000007af40 0xc00000000007b0a0: at 0xc000000002cc0b6c Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007b0a0 But really 0xc00000000007b0a0 0xc00000000007b280: at 0xc000000002cc31f0 Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007b280 But really 0xc00000000007b280 0xc00000000007b2d0: at 0xc000000002d5cfc8 Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007b2d0 But really 0xc00000000007b2d0 0xc00000000007b370: at 0xc000000002d5e83c Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007b370 But really 0xc00000000007b370 0xc00000000007b4a0: at 0xc000000002d51674 Startkernel 0xc000000002400100 Endkernel 0xc000000003a3f8c8 Next 0xc00000000007b4a0 But really 0xc00000000007b4a0 0xc00000000007b530: We in a trap. user trap 0x43a6e82001f07c28 by 0x2a6e92900007d28: srr1=0x3a64e8000207c32 r1=0 cr=0x1644c00 xer=0xdc000 ctr=0x24003307d28 r2=0 db>