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Description of problem: Boot guest with ehci and uhci storage attached simultaneous,qemu-kvm will be aborted with core dumped Version-Release number of selected component (if applicable): qemu-kvm-tools-0.12.1.2-2.184.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1. boot guest #/usr/libexec/qemu-kvm -M rhel6.2.0 -enable-kvm -m 2G -smp 2,cores=2,threads=1,sockets=1 -name RHEL6.1_32 -uuid 50eba0fa-c3bc-4634-9c87-e46fc4dafab9 -rtc base=utc,clock=host,driftfix=slew -boot c -drive file=/root/zhangjunyi/RHEL6.1_64-copy-2.qcow2,if=none,id=drive-ide-0-0,media=disk,format=qcow2,cache=none,werror=stop,index=0 -device virtio-blk-pci,drive=drive-ide-0-0,id=ide0-0-0,physical_block_size=4096,logical_block_size=512,bootindex=1 -netdev tap,id=hostnet1,vhost=on,sndbuf=0 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=78:2B:CB:AF:11:11 -vnc :10 -monitor stdio -device virtio-balloon-pci,id=balloon0 / -device usb-ehci,id=ehci -device usb-storage,bus=ehci.0,drive=usbstick1 -drive if=none,id=usbstick1,file=/root/zhangjunyi/usbdevice1.qcow2 / -usb -device usb-storage,bus=usb.0,drive=usbstick2 -drive if=none,id=usbstick2,file=/root/zhangjunyi/usbdevice2.qcow2 2. 3. Actual results: After step1 qemu-kvm: savevm.c:1258: vmstate_register: Assertion `!se->compat || se->instance_id == 0' failed. Aborted (core dumped) Expected results: Works well Additional info: (gdb) bt #0 0x0000003887a32945 in raise () from /lib64/libc.so.6 #1 0x0000003887a34125 in abort () from /lib64/libc.so.6 #2 0x0000003887a2b9fe in __assert_fail_base () from /lib64/libc.so.6 #3 0x0000003887a2bac0 in __assert_fail () from /lib64/libc.so.6 #4 0x00000000004bee31 in vmstate_register (dev=<value optimized out>, instance_id=<value optimized out>, vmsd=<value optimized out>, opaque=<value optimized out>) at savevm.c:1258 #5 0x00000000004c273f in qdev_init (dev=0x32b0460) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:288 #6 0x00000000004c2a99 in qdev_device_add (opts=0x23e15b0) at /usr/src/debug/qemu-kvm-0.12.1.2/hw/qdev.c:253 #7 0x0000000000409629 in device_init_func (opts=<value optimized out>, opaque=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:4574 #8 0x000000000047a28a in qemu_opts_foreach (list=<value optimized out>, func=0x409620 <device_init_func>, opaque=0x0, abort_on_failure=<value optimized out>) at qemu-option.c:957 #9 0x000000000040d2e8 in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at /usr/src/debug/qemu-kvm-0.12.1.2/vl.c:6107
Also tested with qemu-kvm-tools-0.12.1.2-2.179.el6.x86_64,guest can be booted successful. mark this issue as regression
*** This bug has been marked as a duplicate of bug 734995 ***