** Changed in: linux (Ubuntu Utopic)
Status: In Progress => Fix Released
** Changed in: linux (Ubuntu Utopic)
Status: Fix Released => Fix Committed
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https://bugs.launchpad.net/bugs/1448269
Title:
qemu guest hangs on nested kvm startup with host kernel oops
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Utopic:
Fix Committed
Bug description:
[Impact]
Users of nested KVM may experience the L1 VM hanging when booting an L2 VM.
Overall this seems to be due to issues with external interrupts not reaching L1
when L2 gets booted.
[Test Case]
Run a nested KVM instance:
https://gist.github.com/arges/9d21c6da03a8c10d3980
[Fix]
commit 4fa7734c62cdd8c07edd54fa5a5e91482273071a
commit f3380ca5d7edb5e31932998ab2e29dfdce39c5ed
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I'm creating a vivid qemu guest on a trusty host with
3.13.0-48-generic kernel. When I start a guest inside that guest, I
get the oops below on the host while the first guest hangs and must be
(virsh) destroyed.
Apr 24 20:40:08 sergeh2 kernel: [1575627.844208] ------------[ cut here
]------------
Apr 24 20:40:08 sergeh2 kernel: [1575627.844227] WARNING: CPU: 2 PID: 17176
at /build/buildd/linux-3.13.0/arch/x86/kvm/vmx.c:8414
nested_vmx_vmexit+0x11c/0x150 [kvm_intel]()
Apr 24 20:40:08 sergeh2 kernel: [1575627.844229] Modules linked in: vhost_net
vhost macvtap macvlan xts gf128mul xt_conntrack ipt_REJECT ip6table_filter
ip6_tables ebtable_nat ebtables veth xt_nat xt_CHECKSUM iptable_mangle
ipt_MASQUERADE
iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
xt_tcpudp bridge stp llc iptable_filter ip_tables x_tables dm_crypt gpio_ich
coretemp kvm_intel kvm i7core_edac edac_core lpc_ich shpchp mac_hid serio_raw
lp parp
ort btrfs libcrc32c raid10 raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq raid0 multipath linear dm_snapshot raid1
nouveau mxm_wmi video i2c_algo_bit ttm drm_kms_helper drm ahci r8169 libahci
mii wmi
Apr 24 20:40:08 sergeh2 kernel: [1575627.844281] CPU: 2 PID: 17176 Comm:
qemu-system-x86 Not tainted 3.13.0-48-generic #80-Ubuntu
Apr 24 20:40:08 sergeh2 kernel: [1575627.844283] Hardware name: MSI
MS-7522/MSI X58 Pro (MS-7522) , BIOS V8.14B8 11/09/2012
Apr 24 20:40:08 sergeh2 kernel: [1575627.844286] 0000000000000009
ffff880907561c98 ffffffff81721506 0000000000000000
Apr 24 20:40:08 sergeh2 kernel: [1575627.844290] ffff880907561cd0
ffffffff810677dd ffff880bfa808000 0000000000000014
Apr 24 20:40:08 sergeh2 kernel: [1575627.844293] ffff8806da7a7000
ffff880bfca9c800 0000000000000000 ffff880907561ce0
Apr 24 20:40:08 sergeh2 kernel: [1575627.844297] Call Trace:
Apr 24 20:40:08 sergeh2 kernel: [1575627.844305] [<ffffffff81721506>]
dump_stack+0x45/0x56
Apr 24 20:40:08 sergeh2 kernel: [1575627.844310] [<ffffffff810677dd>]
warn_slowpath_common+0x7d/0xa0
Apr 24 20:40:08 sergeh2 kernel: [1575627.844314] [<ffffffff810678ba>]
warn_slowpath_null+0x1a/0x20
Apr 24 20:40:08 sergeh2 kernel: [1575627.844321] [<ffffffffa081f8ec>]
nested_vmx_vmexit+0x11c/0x150 [kvm_intel]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844327] [<ffffffffa081fafd>]
vmx_queue_exception+0xfd/0x140 [kvm_intel]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844347] [<ffffffffa03b7020>]
vcpu_enter_guest+0x9f0/0xce0 [kvm]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844364] [<ffffffffa03bb2d8>]
kvm_arch_vcpu_ioctl_run+0x1e8/0x460 [kvm]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844376] [<ffffffffa03a5042>]
kvm_vcpu_ioctl+0x2a2/0x5e0 [kvm]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844381] [<ffffffff810aaa38>] ?
__wake_up_common+0x58/0x90
Apr 24 20:40:08 sergeh2 kernel: [1575627.844387] [<ffffffff811ffc91>] ?
fsnotify+0x241/0x320
Apr 24 20:40:08 sergeh2 kernel: [1575627.844391] [<ffffffff811d11c0>]
do_vfs_ioctl+0x2e0/0x4c0
Apr 24 20:40:08 sergeh2 kernel: [1575627.844406] [<ffffffffa03b0504>] ?
kvm_on_user_return+0x74/0x80 [kvm]
Apr 24 20:40:08 sergeh2 kernel: [1575627.844409] [<ffffffff811d1421>]
SyS_ioctl+0x81/0xa0
Apr 24 20:40:08 sergeh2 kernel: [1575627.844414] [<ffffffff81731fbd>]
system_call_fastpath+0x1a/0x1f
Apr 24 20:40:08 sergeh2 kernel: [1575627.844416] ---[ end trace
351396e62b6ef224 ]---
Apr 24 20:48:29 sergeh2 dnsmasq-dhcp[1409]: DHCPREQUEST(lxcbr0) 10.0.3.104
00:16:3e:72:73:32
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-48-generic 3.13.0-48.80
ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16
Uname: Linux 3.13.0-48-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Apr 10 14:22 seq
crw-rw---- 1 root audio 116, 33 Apr 10 14:22 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order
/var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission
denied
Date: Fri Apr 24 20:59:31 2015
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: MSI MS-7522
PciMultimedia:
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-48-generic
root=UUID=d1920c3b-419d-484b-b1f2-5cbc69ef62f5 ro nomodeset intel_pstate=enable
nomdmonddf nomdmonisw
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 11/09/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V8.14B8
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: MSI X58 Pro (MS-7522)
dmi.board.vendor: MSI
dmi.board.version: 3.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD
dmi.chassis.version: 3.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrV8.14B8:bd11/09/2012:svnMSI:pnMS-7522:pvr3.0:rvnMSI:rnMSIX58Pro(MS-7522):rvr3.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr3.0:
dmi.product.name: MS-7522
dmi.product.version: 3.0
dmi.sys.vendor: MSI
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