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SubjectRe: KVM segfaults with 3.5 while installing ubuntu 12.04
Now i got it working - sorry used old gdb.

This is the backtrace:

Core was generated by `/usr/bin/qemu-system-x86_64 -id 103 -chardev
socket,id=qmp,path=/var/run/qemu-s'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f6ca10faed8 in ?? () from /lib/libc.so.6
(gdb) where
#0 0x00007f6ca10faed8 in ?? () from /lib/libc.so.6
#1 0x00007f6ca54e0098 in virtio_notify_vector (vdev=0x7f6ca10fae98,
vector=32620)
at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio.c:493
#2 0x00007f6ca54e0e25 in virtio_notify (vdev=0x7f6ca10fae98,
vq=0x7f6ca10faf18) at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio.c:739
#3 0x00007f6ca54d5bb0 in virtio_blk_req_complete (req=0x7f6ca6fe4440,
status=0)
at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio-blk.c:62
#4 0x00007f6ca54d630b in virtio_blk_handle_scsi (req=0x7f6ca6fe4440) at
/root/src/pve-qemu-kvm/qemu-kvm/hw/virtio-blk.c:263
#5 0x00007f6ca54d6961 in virtio_blk_handle_request (req=0x7f6ca6fe4440,
mrb=0x7fffc18a5330)
at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio-blk.c:385
#6 0x00007f6ca54d6b0f in virtio_blk_handle_output (vdev=0x7f6ca6fb3a70,
vq=0x7f6ca6fb3b40)
at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio-blk.c:418
#7 0x00007f6ca54e096e in virtio_queue_notify_vq (vq=0x7f6ca6fb3b40) at
/root/src/pve-qemu-kvm/qemu-kvm/hw/virtio.c:648
#8 0x00007f6ca533aa5f in virtio_pci_host_notifier_read
(opaque=0x7f6ca6fb3b40)
at /root/src/pve-qemu-kvm/qemu-kvm/hw/virtio-pci.c:197
#9 0x00007f6ca528950e in qemu_iohandler_poll (readfds=0x7f6ca5ca7a20,
writefds=0x7f6ca5ca7aa0, xfds=0x7f6ca5ca7b20, ret=1)
at iohandler.c:121
#10 0x00007f6ca534d706 in main_loop_wait (nonblocking=0) at main-loop.c:497
#11 0x00007f6ca534022c in main_loop () at
/root/src/pve-qemu-kvm/qemu-kvm/vl.c:1569
#12 0x00007f6ca53471ae in main (argc=39, argv=0x7fffc18a5ee8,
envp=0x7fffc18a6028) at /root/src/pve-qemu-kvm/qemu-kvm/vl.c:3745

Stefan


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