I have my desktop current acting a kvm host and I discovered to great dismay that resuming from a suspended OS and starting up a kvm instance will result in a Host KP every time. Researching the issue I found this was an issue on Red Hat variants several years ago:
https://bugzilla.redhat.com/show_bug.cgi?id=509809
The steps listed there are the exact same needed to replicate my issue. The few tidbits of logs I have is a picture I have taken when I actually get output from the crash and the zero byte characters that are written to several log files in /var/log when a crash occurs.
Not sure what all information is needed to track this down however I did notice that lsmod produces different output from a fresh boot and from after a resume:
`wat' is `sudo lsmod` from a fresh boot and `wut' is `sudo lsmod' from after a resume. Attached is what I was able to capture from the KP event, most of the time I just get a blank screen and have to power cycle my desktop.
Any advice or suggestions would be greatly appreciated.
--jar00n
https://bugzilla.redhat.com/show_bug.cgi?id=509809
The steps listed there are the exact same needed to replicate my issue. The few tidbits of logs I have is a picture I have taken when I actually get output from the crash and the zero byte characters that are written to several log files in /var/log when a crash occurs.
Not sure what all information is needed to track this down however I did notice that lsmod produces different output from a fresh boot and from after a resume:
Code:
jar00n@lusus:~$ diff wat wut
1a2,5
> vhost_net 18104 0
> vhost 29009 1 vhost_net
> macvtap 18255 1 vhost_net
> macvlan 19134 1 macvtap
60c64
< nvidia 10675249 53
---
> nvidia 10675249 59Code:
jar00n@lusus:~$ uname -a
Linux lusus 3.13.0-35-generic #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
jar00n@lusus:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
microcode : 0xa07
cpu MHz : 2000.000
cache size : 6144 KB
physical id : 0
siblings : 4
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority
bogomips : 5666.14
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 : 23
model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
microcode : 0xa07
cpu MHz : 2000.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 3
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority
bogomips : 5666.14
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 : 23
model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
microcode : 0xa07
cpu MHz : 2000.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 1
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority
bogomips : 5666.14
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 : 23
model name : Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
stepping : 10
microcode : 0xa07
cpu MHz : 2000.000
cache size : 6144 KB
physical id : 0
siblings : 4
core id : 2
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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm dtherm tpr_shadow vnmi flexpriority
bogomips : 5666.14
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
jar00n@lusus:~$ lsmod
Module Size Used by
usb_storage 62209 0
cdc_acm 28803 0
ipt_MASQUERADE 12880 3
iptable_nat 13011 1
nf_nat_ipv4 13263 1 iptable_nat
nf_nat 21841 3 ipt_MASQUERADE,nf_nat_ipv4,iptable_nat
nf_conntrack_ipv4 15012 2
nf_defrag_ipv4 12758 1 nf_conntrack_ipv4
xt_conntrack 12760 1
nf_conntrack 96976 6 ipt_MASQUERADE,nf_nat,nf_nat_ipv4,xt_conntrack,iptable_nat,nf_conntrack_ipv4
ipt_REJECT 12541 6
xt_CHECKSUM 12549 1
iptable_mangle 12695 1
xt_tcpudp 12884 16
bridge 110833 0
stp 12976 1 bridge
llc 14552 2 stp,bridge
ip6table_filter 12815 0
ip6_tables 27025 1 ip6table_filter
iptable_filter 12810 1
ip_tables 27239 3 iptable_filter,iptable_mangle,iptable_nat
ebtable_nat 12807 0
ebtables 30913 1 ebtable_nat
x_tables 34059 11 ip6table_filter,xt_CHECKSUM,ip_tables,xt_tcpudp,ipt_MASQUERADE,xt_conntrack,iptable_filter,ebtables,ipt_REJECT,iptable_mangle,ip6_tables
dm_crypt 23177 0
rfcomm 69160 0
bnep 19624 2
bluetooth 391136 10 bnep,rfcomm
snd_hda_codec_hdmi 46368 4
gpio_ich 13476 0
uvcvideo 80885 0
videobuf2_vmalloc 13216 1 uvcvideo
videobuf2_memops 13362 1 videobuf2_vmalloc
videobuf2_core 40664 1 uvcvideo
snd_hda_codec_realtek 65580 1
snd_usb_audio 153617 3
videodev 134688 2 uvcvideo,videobuf2_core
snd_usbmidi_lib 29215 1 snd_usb_audio
joydev 17381 0
xpad 18218 0
ff_memless 13573 1 xpad
snd_hda_intel 56451 5
snd_hda_codec 192906 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep 13602 2 snd_usb_audio,snd_hda_codec
snd_pcm 102099 4 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
snd_seq_midi 13324 0
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30144 2 snd_usbmidi_lib,snd_seq_midi
dm_multipath 22873 0
coretemp 13435 0
scsi_dh 14882 1 dm_multipath
kvm_intel 143060 0
kvm 451511 1 kvm_intel
snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi
serio_raw 13462 0
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 29482 2 snd_pcm,snd_seq
snd 69322 29 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
nvidia 10675249 65
lpc_ich 21080 0
soundcore 12680 1 snd
drm 303102 2 nvidia
mac_hid 13205 0
parport_pc 32701 1
ppdev 17671 0
lp 17759 0
parport 42348 3 lp,ppdev,parport_pc
btrfs 835954 0
xor 21411 1 btrfs
raid6_pq 97812 1 btrfs
libcrc32c 12644 1 btrfs
pata_acpi 13038 0
hid_generic 12548 0
pata_jmicron 12758 0
psmouse 106678 0
usbhid 52570 0
r8169 67581 0
mii 13934 1 r8169
hid 106148 2 hid_generic,usbhid
jar00n@lusus:~$ cat /etc/debian_version
jessie/sid
jar00n@lusus:~$ cat /etc/issue
Ubuntu 14.04.1 LTS \n \l--jar00n