Re: qemu-kvm crashes with Assertion ... failed.

[Marcelo Tosatti <mtosatti@redhat.com>]

On Sun, Mar 14, 2010 at 09:57:52AM +0100, André Weidemann wrote:
> Hi,
> I cloned the qemu-kvm git repository today with "git clone
> git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git
> qemu-kvm-2010-03-14", ran configure and compiled it and did a "make
> install". Everything went fine without warnings or errors.
> For configure output take a look here: http://pastebin.com/BL4DYCRY
> 
> Here is my Server Hardware:
> Asus P5Q Mainbaord
> Intel Q9300
> 8GB RAM
> RAID5 with mdadm consisting of 4x 1TB disks
> The volume /dev/storage/Windows7test mentioned below is on this RAID5.
> 
> I ran my virtual machine with the following command:
> 
> qemu-system-x86_64 -cpu core2duo -vga cirrus -boot order=ndc -vnc
> 192.168.3.42:2 -k de -smp 4,cores=4 -drive
> file=/vmware/Windows7Test_600G.img,if=ide,index=0,cache=writeback -m
> 1024 -net nic,model=e1000,macaddr=DE:AD:BE:EF:12:3A -net
> tap,script=/usr/local/bin/qemu-ifup  -monitor pty -name
> Windows7test,process=Windows7test -drive
> file=/dev/storage/Windows7test,if=ide,index=1,cache=none,aio=native

Andre,

Can you try qemu-kvm-0.12.3 ?

> Windows7Test_600G.img is a qcow2 file and contains a Windows 7 Pro image.
> /dev/storage/Windows7test is formated with XFS
> 
> After starting the machine with the above command line, I booted
> into an Ubuntu 9.10 x86_64 Live Image via PXE and mounted /dev/sdb1
> (/dev/storage/Windows7test) under /mnt. I then did "cd /mnt/" and
> ran "iozone -Ra -g 2G -b /tmp/iozone-aoi-linux-xls"
> 
> iozone ran some test and then kvm simply quit with the following
> error message:
> qemu-system-x86_64:
> /usr/local/src/qemu-kvm-2010-03-10/hw/ide/internal.h:510:
> bmdma_active_if: Assertion `bmdma->unit != (uint8_t)-1' failed.
> 
> /var/log/syslog contained the folowing:
> Mar 14 09:18:14 server kernel: [318080.627468] kvm: 1361: cpu0
> kvm_set_msr_common: MSR_IA32_MCG_STATUS 0x0, nop
> Mar 14 09:18:14 server  kernel: [318080.627473] kvm: 1361: cpu0
> kvm_set_msr_common: MSR_IA32_MCG_CTL 0xffffffffffffffff, nop
> Mar 14 09:18:14 server kernel: [318080.627476] kvm: 1361: cpu0
> unhandled wrmsr: 0x400 data ffffffffffffffff
> Mar 14 09:18:14 server kernel: [318080.627506] kvm: 1361: cpu1
> kvm_set_msr_common: MSR_IA32_MCG_STATUS 0x0, nop
> Mar 14 09:18:14 server  kernel: [318080.627509] kvm: 1361: cpu1
> kvm_set_msr_common: MSR_IA32_MCG_CTL 0xffffffffffffffff, nop
> Mar 14 09:18:14 server kernel: [318080.627511] kvm: 1361: cpu1
> unhandled wrmsr: 0x400 data ffffffffffffffff
> Mar 14 09:18:14 server kernel: [318080.627538] kvm: 1361: cpu2
> kvm_set_msr_common: MSR_IA32_MCG_STATUS 0x0, nop
> Mar 14 09:18:14 server kernel: [318080.627540] kvm: 1361: cpu2
> kvm_set_msr_common: MSR_IA32_MCG_CTL 0xffffffffffffffff, nop
> Mar 14 09:18:14 server kernel: [318080.627543] kvm: 1361: cpu2
> unhandled wrmsr: 0x400 data ffffffffffffffff
> 
> 
> I ws able to reproduce this error 3 times in a row.
> 
> Regards,
>  André