Triaging old bug tickets... can you still reproduce this issue with the
latest version of QEMU and OpenBSD? Or could we close this ticket
nowadays?
** Changed in: qemu
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1279500
Title:
system_powerdown causes SMP OpenBSD guest to freeze
Status in QEMU:
Incomplete
Bug description:
system_powerdown causes an SMP OpenBSD guest to freeze. I can
reproduce it with the following systems/versions:
- Debian 6: QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5)
- Fedora 20:
qemu-system-x86-1.6.1 (from Fedora repository)
qemu-1.7.0 (latest release version)
qemu-1.7.50 (latest development snapshot, "git cloned" today, 20140212)
all of the above hosts are running x86_64 linux.
The first OpenBSD version that I ran as a VM, v5.1, experienced the
problem. All subsequent versions experience the problem. The above
tests were performed using OpenBSD v5.4 (amd64).
I will open an OpenBSD bug report for this problem as well, and update
this report with the OpenBSD bug ID.
There's an interesting RedHat bug report concerning this problem:
URL: https://bugzilla.redhat.com/show_bug.cgi?id=508801#c34
Here an excerpt:
-snip-
Gleb Natapov 2009-12-23 10:37:44 EST
I posted patch to provide correct PCI irq routing info in mptable to kvm
mailing list. It works for all devices except for SCI interrupt. BIOS
programs SCI interrupt to be 9 as spec requires, but OpenBSD thinks that
it is smarter and moves it to interrupts 10. Qemu will still send it on
vector 9 and OpenBSD will enter the same infinity recursion. This can
be triggered by issuing system_powerdown on qemu monitor.
-snip-
Michael Tokarev reported this problem on the kvm mailing list in 2011:
URL: http://www.spinics.net/lists/kvm/msg51311.html
I compiled qemu as follows:
-snip-
cd qemu-src-dir
mkdir -p bin/native
cd bin/native
../../configure \
--prefix=/usr/local/qemu-dev-snapshot-20140212 \
--target-list=x86_64-softmmu \
--enable-kvm \
--enable-spice \
--with-gtkabi="3.0" \
--audio-drv-list=pa,sdl,alsa,oss \
--extra-cflags='-I/usr/include/SDL'
-snip-
I'm running OpenBSD with the following command:
-snip-
#!/bin/bash
DEF=/usr/bin/qemu-system-x86_64
QEMU_LATEST=/usr/local/qemu-1.7.0/bin/qemu-system-x86_64
QEMU_DEV=/usr/local/qemu-dev-snapshot-20140212/bin/qemu-system-x86_64
$QEMU_DEV \
-machine accel=kvm \
-name obsdtest-v54 \
-S \
-machine pc-i440fx-1.6,accel=kvm,usb=off \
-boot c \
-m 2048 \
-realtime mlock=off \
-smp 2,sockets=2,cores=1,threads=1 \
-uuid 8b685793-2510-473e-b97e-822a4cf2fbca \
-no-user-config \
-monitor stdio \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=discard \
-no-hpet \
-drive
file=/guest_images/obsdtest_v54.raw,if=none,id=drive-virtio-disk0,format=raw,cache=none
\
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
\
-drive if=none,id=drive-ide0-0-0,readonly=on,format=raw \
-device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
-chardev pty,id=charserial0 \
-device isa-serial,chardev=charserial0,id=serial0 \
-k en-us \
-device cirrus-vga,id=video0,bus=pci.0,addr=0x3 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 \
-net nic \
-net user
-snip-
The OpenBSD disk image I used for testing is 143MB compressed, 10G
uncompressed. It can be found here:
http://www.spielwiese.de/OpenBSD/obsd54.raw.7z
The root password is "x".
Rob Urban
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