Hello all,

I'm seeing this crash trying to boot a KVM virtual machine. This kernel
was compiled with pseries_le_defconfig and run using the following qemu
commandline:

qemu-system-ppc64 -enable-kvm -cpu POWER8 -smp 4 -m 4G -M pseries
-nographic -vga none -drive file=vm.raw,if=virtio,format=raw -drive
file=mkvmconf2xeO,if=virtio,format=raw -netdev type=user,id=net0
-device virtio-net-pci,netdev=net0 -kernel vmlinux_tscr -append
'root=/dev/vdb1 rw cloud-init=disabled'

qemu-system-ppc64 --version
QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.16), Copyright
(c) 2003-2008 Fabrice Bellard


Key type dns_resolver registered
Unable to handle kernel paging request for data at address 0x00000010
Faulting instruction address: 0xc0000000018f2bbc
Oops: Kernel access of bad area, sig: 11 [#1]
LE SMP NR_CPUS=2048 NUMA pSeries
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc1v4.16-rc1 #8
NIP:  c0000000018f2bbc LR: c0000000018f2bb4 CTR: 0000000000000000
REGS: c0000000fea838d0 TRAP: 0380   Not tainted  (4.16.0-rc1v4.16-rc1)
MSR:  8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 84000248  XER:
20000000
CFAR: c0000000019591a0 SOFTE: 0 
GPR00: c0000000018f2bb4 c0000000fea83b50 c000000001bd8400
0000000000000000 
GPR04: c0000000fea83b70 0000000000000000 000000000000002f
0000000000000022 
GPR08: 0000000000000000 c0000000022a3e90 0000000000000000
0000000000000220 
GPR12: 0000000000000000 c00000000fb40980 c00000000000d698
0000000000000000 
GPR16: 0000000000000000 0000000000000000 0000000000000000
0000000000000000 
GPR20: 0000000000000000 0000000000000000 0000000000000000
0000000000000000 
GPR24: 0000000000000000 c0000000018b9248 c0000000018e36d8
c0000000019738a8 
GPR28: 0000000000000007 c0000000fffffc68 c0000000fea83bf0
0000000000000010 
NIP [c0000000018f2bbc] read_drconf_v1_cell+0x50/0x9c
LR [c0000000018f2bb4] read_drconf_v1_cell+0x48/0x9c
Call Trace:
[c0000000fea83b50] [c0000000018f2bb4] read_drconf_v1_cell+0x48/0x9c
(unreliable)
[c0000000fea83b90] [c0000000018f305c] drmem_init+0x13c/0x2ec
[c0000000fea83c40] [c0000000018e4288] do_one_initcall+0xdc/0x1ac
[c0000000fea83d00] [c0000000018e45d4] kernel_init_freeable+0x27c/0x358
[c0000000fea83dc0] [c00000000000d6bc] kernel_init+0x2c/0x160
[c0000000fea83e30] [c00000000000bc20] ret_from_kernel_thread+0x5c/0xbc
Instruction dump:
7c7f1b78 60000000 60000000 7c240b78 3d22ffdc 3929f0a4 e95e0000
e8690002 
f9440021 4806657d 60000000 e9210020 <f87f0000> 39090004 39490010
f9010020 
---[ end trace bd9f49f482d30e03 ]---

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

WARNING: CPU: 1 PID: 1 at drivers/tty/vt/vt.c:3883
do_unblank_screen+0x1f0/0x270
CPU: 1 PID: 1 Comm: swapper/0 Tainted: G      D          4.16.0-
rc1v4.16-rc1 #8
NIP:  c0000000009aa800 LR: c0000000009aa63c CTR: c00000000148f5f0
REGS: c0000000fea832c0 TRAP: 0700   Tainted:
G      D           (4.16.0-rc1v4.16-rc1)
MSR:  8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE>  CR: 28002222  XER:
20000000
CFAR: c0000000009aa658 SOFTE: 1 
GPR00: c0000000009aa63c c0000000fea83540 c000000001bd8400
0000000000000000 
GPR04: 0000000000000001 c0000000fb0c200e 0000000000001dd7
c0000000fea834d0 
GPR08: 00000000fe430000 0000000000000000 0000000000000000
0000000000000001 
GPR12: 0000000028002428 c00000000fb40980 c00000000000d698
0000000000000000 
GPR16: 0000000000000000 0000000000000000 0000000000000000
0000000000000000 
GPR20: 0000000000000000 0000000000000000 0000000000000000
0000000000000000 
GPR24: c0000000fea40000 c0000000feadf910 c000000001a4a7a8
c000000001cc4ea0 
GPR28: c00000000173f4f0 c000000001cc4ec8 0000000000000000
0000000000000000 
NIP [c0000000009aa800] do_unblank_screen+0x1f0/0x270
LR [c0000000009aa63c] do_unblank_screen+0x2c/0x270
Call Trace:
[c0000000fea83540] [c0000000009aa63c] do_unblank_screen+0x2c/0x270
(unreliable)
[c0000000fea835b0] [c0000000008a2a70] bust_spinlocks+0x40/0x80
[c0000000fea835d0] [c0000000000da90c] panic+0x1b8/0x32c
[c0000000fea83670] [c0000000000e1bd4] do_exit+0xcb4/0xcc0
[c0000000fea83730] [c0000000000275fc] die+0x29c/0x450
[c0000000fea837c0] [c000000000053f88] bad_page_fault+0xe8/0x160
[c0000000fea83830] [c000000000028a90] slb_miss_bad_addr+0x40/0x90
[c0000000fea83860] [c000000000008b08] bad_addr_slb+0x158/0x160
--- interrupt: 380 at read_drconf_v1_cell+0x50/0x9c
    LR = read_drconf_v1_cell+0x48/0x9c
[c0000000fea83b90] [c0000000018f305c] drmem_init+0x13c/0x2ec
[c0000000fea83c40] [c0000000018e4288] do_one_initcall+0xdc/0x1ac
[c0000000fea83d00] [c0000000018e45d4] kernel_init_freeable+0x27c/0x358
[c0000000fea83dc0] [c00000000000d6bc] kernel_init+0x2c/0x160
[c0000000fea83e30] [c00000000000bc20] ret_from_kernel_thread+0x5c/0xbc
Instruction dump:
3c62ffbf 38840001 7c8407b4 38639ca8 4b7ae0ed 60000000 38210070
e8010010 
ebc1fff0 ebe1fff8 7c0803a6 4e800020 <0fe00000> 4bfffe58 60000000
60420000 
---[ end trace bd9f49f482d30e04 ]---
Rebooting in 10 seconds..

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