Comment # 4
on bug 1213915
from Jonathan Rivrain
I do not currently have access to workers on openqa.opensuse.org, but I could
reproduce this on a power8 machine on OSD, and If I emulate a power8 cpu on my
x86_64 laptop, it happens as well. I can provide /proc/cpuinfo from the host
where I reproduced it, but I can't do so from the guest, as it crashes right
away. Anyway, the qemu command line says "-cpu host" so I assume it's the same.
On openqa the VM is launched as follows
/usr/bin/qemu-system-ppc64 -device VGA,edid=on,xres=1024,yres=768 -g 1024x768
-only-migratable -chardev ringbuf,id=serial0,logfile=serial0,logappend=on
-serial chardev:serial0 -audiodev none,id=snd0 -device intel-hda -device
hda-output,audiodev=snd0 -global isa-fdc.fdtypeA=none -m 4096 -machine
usb=off,cap-cfpc=broken,cap-sbbc=broken,cap-ibs=broken,cap-ccf-assist=off -cpu
host -netdev user,id=qanet0 -device
virtio-net,netdev=qanet0,mac=52:54:00:12:34:56 -object
rng-random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0 -boot
once=d -device nec-usb-xhci -device usb-tablet -device usb-kbd -smp 4
-enable-kvm -no-shutdown -vnc :97,share=force-shared -device virtio-serial
-chardev
pipe,id=virtio_console,path=virtio_console,logfile=virtio_console.log,logappend=on
-device
virtconsole,chardev=virtio_console,name=org.openqa.console.virtio_console
-chardev
pipe,id=virtio_console_user,path=virtio_console_user,logfile=virtio_console_user.log,logappend=on
-device
virtconsole,chardev=virtio_console_user,name=org.openqa.console.virtio_console_user
-chardev
socket,path=qmp_socket,server=on,wait=off,id=qmp_socket,logfile=qmp_socket.log,logappend=on
-qmp chardev:qmp_socket -S -device virtio-scsi-pci,id=scsi0 -device
virtio-scsi-pci,id=scsi1 -blockdev
driver=file,node-name=hd0-file,filename=/var/lib/openqa/pool/7/raid/hd0,cache.no-flush=on
-blockdev
driver=qcow2,node-name=hd0,file=hd0-file,cache.no-flush=on,discard=unmap
-device
scsi-hd,id=hd0-device-path0,drive=hd0,share-rw=true,bus=scsi0.0,serial=hd0
-device
scsi-hd,id=hd0-device-path1,drive=hd0,share-rw=true,bus=scsi1.0,serial=hd0
-blockdev
driver=file,node-name=cd0-overlay0-file,filename=/var/lib/openqa/pool/7/raid/cd0-overlay0,cache.no-flush=on
-blockdev
driver=qcow2,node-name=cd0-overlay0,file=cd0-overlay0-file,cache.no-flush=on,discard=unmap
-device scsi-cd,id=cd0-device,drive=cd0-overlay0,serial=cd0
I could reproduce it with this simpler command :
qemu-system-ppc64 -m 4096 -enable-kvm -vga none -nographic -cdrom
agama-live.ppc64le-3.0.0-ALP-Build1.3.iso -device virtio-scsi-pci,id=scsi0
-blockdev driver=file,node-name=hd0-file,filename=img.qcow2,cache.no-flush=on
-blockdev
driver=qcow2,node-name=hd0,file=hd0-file,cache.no-flush=on,discard=unmap
-device virtio-blk,id=hd0-device,drive=hd0,serial=hd0 -net nic, -net
user,hostfwd=tcp::9091-:9090 -smp 1 -machine
usb=off,cap-cfpc=broken,cap-sbbc=broken,cap-ibs=broken,cap-ccf-assist=off -cpu
host
CPU INFO:
lscpu ;cat /proc/cpuinfo
Architecture: ppc64le
Byte Order: Little Endian
CPU(s): 128
On-line CPU(s) list:
0,8,16,24,32,40,48,56,64,72,80,88,96,104,112,120
Off-line CPU(s) list:
1-7,9-15,17-23,25-31,33-39,41-47,49-55,57-63,65-71,73-79,81-87,89-95,97-103,105-111,113-119,121-12
7
Thread(s) per core: 1
Core(s) per socket: 4
Socket(s): 4
NUMA node(s): 4
Model: 2.1 (pvr 004b 0201)
Model name: POWER8E (raw), altivec supported
CPU max MHz: 4322.0000
CPU min MHz: 2061.0000
L1d cache: 1 MiB
L1i cache: 512 KiB
L2 cache: 8 MiB
L3 cache: 128 MiB
NUMA node0 CPU(s): 0,8,16,24
NUMA node1 CPU(s): 32,40,48,56
NUMA node16 CPU(s): 64,72,80,88
NUMA node17 CPU(s): 96,104,112,120
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Mitigation; RFI Flush
Vulnerability Mds: Not affected
Vulnerability Meltdown: Mitigation; RFI Flush
Vulnerability Mmio stale data: Not affected
Vulnerability Retbleed: Not affected
Vulnerability Spec store bypass: Mitigation; Kernel entry/exit barrier (hwsync)
Vulnerability Spectre v1: Mitigation; __user pointer sanitization
Vulnerability Spectre v2: Vulnerable
Vulnerability Srbds: Not affected
Vulnerability Tsx async abort: Not affected
processor : 0
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 8
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 16
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 24
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 32
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 40
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 48
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 56
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 64
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 72
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 80
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 88
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 96
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 104
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 112
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
processor : 120
cpu : POWER8E (raw), altivec supported
clock : 4322.000000MHz
revision : 2.1 (pvr 004b 0201)
timebase : 512000000
platform : PowerNV
model : 8284-22A
machine : PowerNV 8284-22A
firmware : OPAL
MMU : Hash