[Bug 64601] New: Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[Bug 64601] New: Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=64601

            Bug ID: 64601
           Summary: Whole system crashes when sharing network card in
                    virtual PC only on kernel 3.11
           Product: Virtualization
           Version: unspecified
    Kernel Version: 3.11.*
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: kvm
          Assignee: virtualization_kvm@kernel-bugs.osdl.org
          Reporter: ryan@gralinski.com
        Regression: No

I have fedora 19 on 2 x86_64 computers and 2 686 computers
i use virtual machines on all of them, it works fine on the 686 computers

but on my 64 bit computers as soon as the kernel upgraded to 3.11 my virtual
machines crash the whole system if i use a ethernet card that is shard with a
physical card... .the virtual pc works fine if i use the virtual network but if
you share the physical device it just freezes the whole system, happens on both
of my 64 bit computers, and really is bad.

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[Bug 64601] Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=64601

--- Comment #1 from Ryan Gralinski <ryan@gralinski.com> ---
i should add that when i boot up with the older 3.9 kernel the virtual machine
with shared network cards work, and if i boot with any 3.11 kernel it locks up
the host when launching virtual pc with shared nework card

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[Bug 64601] Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=64601

Alex Williamson <alex.williamson@redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alex.williamson@redhat.com

--- Comment #2 from Alex Williamson <alex.williamson@redhat.com> ---
Please provide libvirt xml or scripts used to launch VMs.

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[Bug 64601] Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=64601

--- Comment #3 from Ryan Gralinski <ryan@gralinski.com> ---
i am using the virtual machine manager, i dont know what the libvirt.xml you
want is but when i launch it this is the process it runs

/usr/bin/qemu-system-x86_64 -machine accel=kvm -name Windows7 -S -machine
pc-i440fx-1.4,accel=kvm,usb=off -m 3000 -smp 2,sockets=2,cores=1,threads=1
-uuid ed2e9111-fc57-f64c-bbb0-c86de3a64bf4 -no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/Windows7.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime
-no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -drive
file=/var/lib/libvirt/images/Windows_7.img,if=none,id=drive-ide0-0-0,format=raw
-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1
-netdev tap,fd=26,id=hostnet0 -device
rtl8139,netdev=hostnet0,id=net0,mac=00:00:00:00:01:43,bus=pci.0,addr=0x6
-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
-device usb-tablet,id=input0 -spice
port=5901,addr=127.0.0.1,disable-ticketing,seamless-migration=on -vga qxl
-global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=67108864 -device
intel-hda,id=sound0,bus=pci.0,addr=0x3 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -incoming fd:24 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5

my kernel upgraded to 3.11.7-200 and still does the same thing, i just tried
again on one of my 64 bit computers i tried kernels 3.9.5-301, 3.9.8-300,
3.9.9-302 and the virtual machine above runs perfectly fine.

i tried on 3.11.1-200, 3.11.3-201, 3.11.6-200, and now 3.11.7-200 and they all
freeze the host.... if i remove the hardware, and add it as a virtual network
it will work, if i remove the hardware and then boot the virtual pc, and add
the hardware while its running, as soon as i add it, the host freezes up have
to hard reset. 

Thanks.

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[Bug 64601] Whole system crashes when sharing network card in virtual PC only on kernel 3.11

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=64601

Luke Hinds <lukehinds@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lukehinds@gmail.com

--- Comment #4 from Luke Hinds <lukehinds@gmail.com> ---
You can source the libvirt xml with virsh

$ virsh connect qemu:///system
Connecting to uri: qemu:///system

$ virsh dumpxml foo > /tmp/foo.xml

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