Hi list, Got 2 crashes on the same guest in 2 days when under heavy IO (virt-io). There's not much to go at: 3785 Bus error ./qemu-19 -clock dynticks -usbdevice tablet - -m 768 -monitor telnet:127.0.0.1:10019,server,nowait -L ./ -kernel ./bzImage-2.6.28.1 -append "earlyprintk=serial,ttyS0,115200,keep console=ttyS0,115200 root=/dev/vda nolapic selinux=1 enforcing=0" - -nographic -drive file=./vm/root_fs,if=virtio,boot=on -net nic,vlan=0,macaddr=fe:f0:00:00:00:18,model=virtio -net tap,vlan=0,ifname=tap24,script=no dmesg: [6358708.743157] qemu-19[3786] trap stack segment ip:7ffbbe76b9e5 sp:41f9de30 error:0 More info: QEMU PC emulator version 0.9.1 (kvm-82), Copyright (c) 2003-2008 Fabrice Bellard Host: Linux 2.6.27.5 #6 SMP x86_64 AMD Athlon(tm) X2 Dual Core Processor BE-2300 AuthenticAMD GNU/Linux Not sure if this is relevant, but on boot kvm reports in dmesg: [6358788.212579] kvm: 21229: cpu0 unhandled wrmsr: 0xc0010117 data 0 [6358792.992848] kvm: 21229: cpu0 unhandled rdmsr: 0x417 Cheers Antoine -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html