Package: qemu-kvm Version: 1.1.2+dfsg-6 Severity: important Dear Maintainer,
I have just started using kvm on this system, and twice in the last couple of
days the VM (though not the qemu console) became unresponsive and use of the
host CPU maxed out. The first time useage was consistent with 2 cores at 100%;
the second time 1 core.
* What led up to the situation?
invoking kvm with
sudo kvm -cpu pentium3 -smp 2 -hda /dev/sunflower/corn_vdisk -m 2G -soundhw hda
-display sdl -vga std -boot order=c -net nic,macaddr=12:34:56:00:00:01 -net tap
Host hardware is 64 bit, 4-core (each with 2 hyperthreads) Intel(R) Xeon(R) CPU
E3-1245 V2 @ 3.40GHz running Wheezy amd64. 16G ram.
The first time I booted of a virtual CD with the Lenny installer. I walked the
installation and rebooted. I did some tweaks to the system and installed
additional packages. While in aptitude I started typing a package name to
search when the VM became unresponsive. This used 2 CPU's until I stopped it.
It might be relevant that the virtual disk has a partition managed by LVM, and
provides some encrypted volumes.
The second time I started the system, did more work, and left it overnight.
Late afternoon on the following day it hung up, using one cpu. I was doing
nothing in the VM at the time (there was an ssh session, as well as the
console). The failure seemed to coincide with the start of CPU intensive
activities on the host system.
* What exactly did you do (or not do) that was effective (or
ineffective)?
I restarted the VM and let the virtual file systems recover from a dirty
shutdown.
For the second failure there was error information in the console; I have
attached a screen capture. There didn't seem to be any trace of it in the logs
of the VM when I restarted.
* What was the outcome of this action?
VM back up, though apparently not reliably.
* What outcome did you expect instead?
The VM just worked.
Comment: I'm not sure I need to emulate a 32 bit PC; I'm doing it to match the
dead system I'm trying to recover as closely as possible.
I found this in the host logs, though I believe these are associated with
bringing the VM back up rather than its failure:
Sep 26 17:45:40 tempserver kernel: [27824.056938] ADDRCONF(NETDEV_UP): tap0:
link is not ready
Sep 26 17:45:40 tempserver kernel: [27824.108960] Bridge firewalling registered
Sep 26 17:45:40 tempserver kernel: [27824.112560] device eth2 entered
promiscuous mode
Sep 26 17:45:40 tempserver kernel: [27824.116976] device eth1 entered
promiscuous mode
Sep 26 17:45:40 tempserver kernel: [27824.197127] ADDRCONF(NETDEV_UP): eth1:
link is not ready
Sep 26 17:45:40 tempserver kernel: [27824.197851] device tap0 entered
promiscuous mode
Sep 26 17:45:40 tempserver kernel: [27824.199665] br0: port 1(eth2) entering
forwarding state
Sep 26 17:45:40 tempserver kernel: [27824.199673] br0: port 1(eth2) entering
forwarding state
Sep 26 17:45:50 tempserver kernel: [27834.544004] br0: no IPv6 routers present
Sep 26 17:46:46 tempserver kernel: [27890.232688] device tap1 entered
promiscuous mode
Sep 26 17:46:46 tempserver kernel: [27890.232709] br0: port 4(tap1) entering
forwarding state
Sep 26 17:46:46 tempserver kernel: [27890.232727] br0: port 4(tap1) entering
forwarding state
Sep 26 17:46:51 tempserver kernel: [27894.948716] kvm: emulating exchange as
write
Sep 26 17:46:56 tempserver kernel: [27900.437117] tap1: no IPv6 routers present
-- Package-specific info:
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 3401.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6785.31
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 3401.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 1
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.54
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 3401.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 2
cpu cores : 4
apicid : 4
initial apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.53
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 3401.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 6
initial apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.54
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.54
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 1
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.53
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 2
cpu cores : 4
apicid : 5
initial apicid : 5
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.54
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 58
model name : Intel(R) Xeon(R) CPU E3-1245 V2 @ 3.40GHz
stepping : 9
microcode : 0x16
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm
constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc
aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr
pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c
rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi
flexpriority ept vpid fsgsbase smep erms
bogomips : 6784.54
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
-- System Information:
Debian Release: 7.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages qemu-kvm depends on:
ii adduser 3.113+nmu3
ii ipxe-qemu 1.0.0+git-20120202.f6840ba-3
ii libaio1 0.3.109-3
ii libasound2 1.0.25-4
ii libbluetooth3 4.99-2
ii libbrlapi0.5 4.4-10+deb7u1
ii libc6 2.13-38
ii libcurl3-gnutls 7.26.0-1+wheezy3
ii libglib2.0-0 2.33.12+really2.32.4-5
ii libgnutls26 2.12.20-7
ii libiscsi1 1.4.0-3
ii libjpeg8 8d-1
ii libncurses5 5.9-10
ii libpng12-0 1.2.49-1
ii libpulse0 2.0-6.1
ii libsasl2-2 2.1.25.dfsg1-6+deb7u1
ii libsdl1.2debian 1.2.15-5
ii libspice-server1 0.11.0-1
ii libtinfo5 5.9-10
ii libusbredirparser0 0.4.3-2
ii libuuid1 2.20.1-5.3
ii libvdeplug2 2.3.2-4
ii libx11-6 2:1.5.0-1+deb7u1
ii python 2.7.3-4
ii qemu-keymaps 1.1.2+dfsg-6a
ii qemu-utils 1.1.2+dfsg-6a
ii seabios 1.7.0-1
ii vgabios 0.7a-3
ii zlib1g 1:1.2.7.dfsg-13
Versions of packages qemu-kvm recommends:
ii bridge-utils 1.5-6
ii iproute 20120521-3+b3
Versions of packages qemu-kvm suggests:
ii debootstrap 1.0.48+deb7u1
pn samba <none>
ii vde2 2.3.2-4
-- no debconf information
<<attachment: kvm-crash.png>>
