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+Qemu core dumped if using virtio-net
+
+System Environment
+=======
+Qemu commit/branch: e92fbc75
+Host OS: RHEL7.2 ia32e
+Host Kernel: 4.9.0
+Guest OS: RHEL7.2 ia32e
+Guest Kernel: 4.9.0
+
+Bug detailed description
+=======
+While create a kvm guest using virtio-net, the qemu will core dump with showing "Aborted (core dumped)".
+Reproduce Steps
+==============
+create a guest:
+qemu-system-x86_64 -enable-kvm -m 4096 -smp 4 -device virtio-net-pci,netdev=nic0,mac=00:16:3e:49:be:24 -netdev tap,id=nic0,script=/etc/kvm/qemu-ifup -drive file=/ia32e_rhel7u2_kvm.qcow2,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0 -serial file:serial.log
+
+Current Result:
+==============
+
+qemu-system-x86_64: /workspace/ia32e/nightly/kvm-next-20170105-ef85b6-e92fbc/kvm/qemu/hw/virtio/virtio.c:214: virtio_queue_set_notification: Assertion `vq->notification_disabled > 0' failed.
+Aborted (core dumped)
+
+add info
+========
+[root@hsw-ep2 Desktop]# dmesg |grep -v virbr0 |tail -n 10
+[ 1760.265000] device tap0 left promiscuous mode
+[ 1879.148642] device tap0 entered promiscuous mode
+[ 1885.213702] kvm [14186]: vcpu0, guest rIP: 0xffffffff81066784 disabled perfctr wrmsr: 0xc2 data 0xffff
+[ 1912.258783] device tap0 left promiscuous mode
+[ 1995.972267] device tap0 entered promiscuous mode
+[ 2001.990207] kvm [14335]: vcpu0, guest rIP: 0xffffffff81066784 disabled perfctr wrmsr: 0xc2 data 0xffff
+[ 2024.703072] device tap0 left promiscuous mode
+[ 2145.374239] device tap0 entered promiscuous mode
+[ 2151.409948] kvm [14541]: vcpu0, guest rIP: 0xffffffff81066784 disabled perfctr wrmsr: 0xc2 data 0xffff
+[ 2178.281446] device tap0 left promiscuous mode
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