linux-kernel - Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use shared interrupts for virtqueues")

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Message-ID: <20170328183731-mutt-send-email-mst@kernel.org>
Date:   Tue, 28 Mar 2017 18:37:58 +0300
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Mike Galbraith <efault@....de>
Cc:     Christoph Hellwig <hch@....de>,
        Thorsten Leemhuis <linux@...mhuis.info>,
        virtio-dev@...ts.oasis-open.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        rjones@...hat.com
Subject: Re: Random guest crashes since 5c34d002dcc7 ("virtio_pci: use shared
 interrupts for virtqueues")

On Tue, Mar 28, 2017 at 05:16:13AM +0200, Mike Galbraith wrote:
> On Tue, 2017-03-28 at 05:35 +0300, Michael S. Tsirkin wrote:
> > On Tue, Mar 28, 2017 at 03:08:20AM +0200, Mike Galbraith wrote:
> > > On Mon, 2017-03-27 at 21:16 +0300, Michael S. Tsirkin wrote:
> > > 
> > > > Mike, could you pls send lspci -vv that shows up after
> > > > boot?
> > > 
> > > Presuming you mean the virtual box..
> > 
> > Yes. Hmm nothing strange here. Can you pls post your QEMU
> > command line so I can try reproducing?
> 
> I don't start from the command line, I poke buttons in gui tool for
> virt-weenies, below is ps result (hope your monitor is 37 feet wide).
> 
> /usr/bin/qemu-system-x86_64 -name opensuse42.1 -S -machine pc-i440fx-2.3,accel=kvm,usb=off,vmport=off -cpu Haswell-noTSX,+abm,+pdpe1gb,+rdrand,+f16c,+osxsave,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme -m 8192 -realtime mlock=off -smp 8,sockets=1,cores=1,threads=8 -uuid afff4e95-262d-41ca-9189-f40c87c9375b -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/opensuse42.1.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device ahci,id=sata0,bus=pci.0,addr=0x5 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x7 -drive file=/abuild/lib/libvirt/images/opensuse42.1.qcow2,if=none,id=drive-virtio-disk0,format=qcow2,cache=off -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0xa,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/dev/sr0,if=none,media=cdrom,id=drive-sata0-0-0,readonly=on,format=raw -device ide-cd,bus=sata0.0,drive=drive-sata0-0-0,id=sata0-0-0 -netdev tap,fd=22,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:be:db:82,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev spicevmc,id=charchannel0,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 -chardev socket,id=charchannel1,path=/var/lib/libvirt/qemu/channel/target/opensuse42.1.org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -k de -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 -object rng-random,id=objrng0,filename=/dev/random -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x9 -msg timestamp=on
> 
> If you want the xml instead, holler.
> 
> 	-Mike

No, that's fine, thanks. Anything specific that you do to trigger this?

-- 
MST