[fedora-virt] Qemu savevm and CPU stuck

[Benjamin Cleyet-Marrel]

Hi, 

First post to this list so sorry if I am mistaken.
I've browsed the wiki and googled and could not find anyone having or
reporting the same problem.
I am using fedora virt-preview repository on a fedora 11 stable

The savevm/loadvm seems to be slightly broken:

The guest is a Centos5.3

When issuing a savevm in the monitor, 
Guest get stuck for a few seconds and I get the infamous soft lockup a
couple of time. (see bellow)

The snapshot is working.

When doing a loadvm I often get weird behaviour on the console.
this can be completly removed if I issue a stop and cont before and
after the loadvm.


Question is:
Am I doing somthing wrong or is this a bug ?

Thanks
Cheers
Ben



Sep 18 10:58:48 dhcp155 kernel: BUG: soft lockup - CPU#0 stuck for 10s!
[swapper:0]
Sep 18 10:58:48 dhcp155 kernel: 
Sep 18 10:58:48 dhcp155 kernel: Pid: 0, comm:              swapper
Sep 18 10:58:48 dhcp155 kernel: EIP: 0060:[<c044d219>] CPU: 0
Sep 18 10:58:48 dhcp155 kernel: EIP is at handle_IRQ_event+0x39/0x8c
Sep 18 10:58:48 dhcp155 kernel:  EFLAGS: 00000246    Not tainted
(2.6.18-128.el5 #1)
Sep 18 10:58:48 dhcp155 kernel: EAX: 00000001 EBX: c06e6f00 ECX:
f7c9bf80 EDX: c0754f9c
Sep 18 10:58:48 dhcp155 kernel: ESI: f7c9bf80 EDI: 00000001 EBP:
00000000 DS: 007b ES: 007b
Sep 18 10:58:48 dhcp155 kernel: CR0: 8005003b CR2: 080c3e80 CR3:
376ad000 CR4: 00000690
Sep 18 10:58:48 dhcp155 kernel:  [<c044d2f0>] __do_IRQ+0x84/0xd6
Sep 18 10:58:48 dhcp155 kernel:  [<c04074e5>] do_IRQ+0xb0/0xc3
Sep 18 10:58:48 dhcp155 kernel:  [<c0405946>] common_interrupt+0x1a/0x20
Sep 18 10:58:48 dhcp155 kernel:  [<c044d219>] handle_IRQ_event+0x39/0x8c
Sep 18 10:58:48 dhcp155 kernel:  [<c044d2f0>] __do_IRQ+0x84/0xd6
Sep 18 10:58:48 dhcp155 kernel:  [<c044d26c>] __do_IRQ+0x0/0xd6
Sep 18 10:58:48 dhcp155 kernel:  [<c04074ce>] do_IRQ+0x99/0xc3
Sep 18 10:58:48 dhcp155 kernel:  [<c0405946>] common_interrupt+0x1a/0x20
Sep 18 10:58:48 dhcp155 kernel:  [<c0428ba7>] __do_softirq+0x57/0x114
Sep 18 10:58:48 dhcp155 kernel:  [<c04073eb>] do_softirq+0x52/0x9c
Sep 18 10:58:48 dhcp155 kernel:  [<c04059d7>] apic_timer_interrupt
+0x1f/0x24
Sep 18 10:58:48 dhcp155 kernel:  [<c0403bb0>] default_idle+0x0/0x59
Sep 18 10:58:48 dhcp155 kernel:  [<c0403be1>] default_idle+0x31/0x59
Sep 18 10:58:48 dhcp155 kernel:  [<c0403ca8>] cpu_idle+0x9f/0xb9
Sep 18 10:58:48 dhcp155 kernel:  [<c06f59ee>] start_kernel+0x379/0x380
Sep 18 10:58:48 dhcp155 kernel:  =======================


in dmesg






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