[Qemu-discuss] Boot fail after compiling the Kernel.

[John Y.]

Hi, 

I have a centos 5.8 guest with 2.6.18 kernel.

I compiled the kernel 2.6.35.4 and boot from it.

(It could boot successfully in my labtop, but fail in guest created by qemu-kvm)

But I get errors:

Kernel panic - not syncing : Attempted to kill the idle task!

Pid :0, comm: swapper Tainted: G           D             2.6.35..4#2

Call Trace:

 [<c043127c>] ? panic+0x50/0xc1

 [<c0433df8>] ? do_exit+0x5b/0x2b3

 [<c069c1ed>] ? opps_end+0x90/0x94

 [<c069beea>] ? do_general_protection+0x0/0x106

 [<c069b8b6>] ? error_code+0x66/0x6c

 [<c069beea>] ? do_general_protection+0x0/0x106

 [<c08680b0>] ? intel_pmu_init+0x110/0x2c3

 [<c086828d>] ? init_hw_perf_events+0x2a/0x27d

 [<c0867e73>] ? check_bugs+0x5/0x2e

 [<c08618b0>] ? start_kernel+0x21b/0x227

Mylibvirt.xml:

<domain type='kvm' id='160'>

  <name>i-centos5</name>

  <uuid>d5e33a85-33d7-41e8-b68f-c87b87986f50</uuid>

  <memory unit='KiB'>1048576</memory>

  <currentMemory unit='KiB'>1048576</currentMemory>

  <vcpu placement='static'>4</vcpu>

  <resource>

    <partition>/machine</partition>

  </resource>

  <os>

    <type arch='x86_64' machine='pc-i440fx-rhel7.0.0'>hvm</type>

    <boot dev='hd'/>

    <boot dev='cdrom'/>

  </os>

  <features>

    <acpi/>

  </features>

  <cpu mode='host-passthrough'/>

  <clock offset='localtime'/>

  <on_poweroff>destroy</on_poweroff>

  <on_reboot>restart</on_reboot>

  <on_crash>destroy</on_crash>

  <devices>

    <emulator>/usr/libexec/qemu-kvm</emulator>

    <disk type='file' device='disk'>

      <driver name='qemu' type='qcow2'/>

      <source file='/root/yaowj/i-centos5/snap2.qcow2'/>

      <backingStore type='file' index='1'>

        <format type='raw'/>

        <source file='/home/centos5.qcow2'/>

        <backingStore/>

      </backingStore>

      <target dev='vda' bus='virtio'/>

      <alias name='virtio-disk0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>

    </disk>

    <controller type='usb' index='0' model='ich9-ehci1'>

      <alias name='usb'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x7'/>

    </controller>

    <controller type='usb' index='0' model='ich9-uhci1'>

      <alias name='usb'/>

      <master startport='0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0' multifunction='on'/>

    </controller>

    <controller type='usb' index='0' model='ich9-uhci2'>

      <alias name='usb'/>

      <master startport='2'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x1'/>

    </controller>

    <controller type='usb' index='0' model='ich9-uhci3'>

      <alias name='usb'/>

      <master startport='4'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x2'/>

    </controller>

    <controller type='pci' index='0' model='pci-root'>

      <alias name='pci.0'/>

    </controller>

    <interface type='bridge'>

      <mac address='fa:16:3e:81:00:01'/>

      <source bridge='eucabr'/>

      <target dev='vnet0'/>

      <model type='virtio'/>

      <driver name='qemu'/>

      <alias name='net0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>

    </interface>

    <serial type='pty'>

      <source path='/dev/pts/7'/>

      <target port='0'/>

      <alias name='serial0'/>

    </serial>

    <console type='pty' tty='/dev/pts/7'>

      <source path='/dev/pts/7'/>

      <target type='serial' port='0'/>

      <alias name='serial0'/>

    </console>

    <input type='tablet' bus='usb'>

      <alias name='input0'/>

    </input>

    <input type='mouse' bus='ps2'/>

    <input type='keyboard' bus='ps2'/>

    <graphics type='vnc' port='5900' autoport='yes' listen='0.0.0.0' keymap='en-us'>

      <listen type='address' address='0.0.0.0'/>

    </graphics>

    <video>

      <model type='cirrus' vram='16384' heads='1'/>

      <alias name='video0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>

    </video>

    <memballoon model='virtio'>

      <alias name='balloon0'/>

      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>

    </memballoon>

  </devices>

</domain>

/usr/libexec/qemu-kvm --version

QEMU emulator version 1.5.3 (qemu-kvm-1.5.3-105.el7_2.3), Copyright (c) 2003-2008 Fabrice Bellard

host:

uname -a

Linux gcloud38122 4.2.0-1.el7.elrepo.x86_64 #1 SMP Sun Aug 30 21:25:29 EDT 2015 x86_64 x86_64 x86_64 GNU/Linux

How can I boot from a new kernel?

Thanks,

John