This ubuntu_kvm_smoke_test has passed on bare-metal AMD64 with Bionic
kernel 4.15.0-102.103

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https://bugs.launchpad.net/bugs/1881072

Title:
  "BUG: unable to handle kernel paging request" when testing
  ubuntu_kvm_smoke_test.kvm_smoke_test with B-KVM in proposed

Status in ubuntu-kernel-tests:
  New
Status in linux-kvm package in Ubuntu:
  New

Bug description:
  Issue found on 4.15.0-1061-kvm, with KVM instance zeppo, moe.

  The ubuntu_kvm_smoke_test will fail with:
      uvt-kvm: error: timed out waiting for dnsmasq lease for 52:54:00:ee:15:c8.

  Traces can be found in syslog.
  systemd[1]: Started Daemon for generating UUIDs.
  kernel: kauditd_printk_skb: 9 callbacks suppressed
  kernel: audit: type=1400 audit(1590647581.375:20): apparmor="STATUS" 
operation="profile_load" profile="unconfined" 
name="libvirt-2c239120-7dc0-4e83-8c24-1eb5a3081877" pid=1291 
comm="apparmor_parser"
  kernel: audit: type=1400 audit(1590647581.691:21): apparmor="STATUS" 
operation="profile_replace" profile="unconfined" 
name="libvirt-2c239120-7dc0-4e83-8c24-1eb5a3081877" pid=1294 
comm="apparmor_parser"
  kernel: audit: type=1400 audit(1590647581.927:22): apparmor="STATUS" 
operation="profile_replace" profile="unconfined" 
name="libvirt-2c239120-7dc0-4e83-8c24-1eb5a3081877" pid=1297 
comm="apparmor_parser"
  kernel: audit: type=1400 audit(1590647582.155:23): apparmor="STATUS" 
operation="profile_replace" info="same as current profile, skipping" 
profile="unconfined" name="libvirt-2c239120-7dc0-4e83-8c24-1eb5a3081877" 
pid=1300 comm="apparmor_parser"
  systemd[1]: Started Virtual machine log manager.
  libvirtd[693]: 2020-05-28 06:33:02.188+0000: 731: info : libvirt version: 
4.0.0, package: 1ubuntu8.17 (Marc Deslauriers <marc.deslauri...@ubuntu.com> 
Wed, 06 May 2020 14:18:23 -0400)
  systemd-networkd[613]: vnet0: Link UP
  systemd-networkd[613]: vnet0: Gained carrier
  networkd-dispatcher[662]: WARNING:Unknown index 7 seen, reloading interface 
list
  kernel: virbr0: port 2(vnet0) entered blocking state
  kernel: virbr0: port 2(vnet0) entered disabled state
  kernel: device vnet0 entered promiscuous mode
  kernel: virbr0: port 2(vnet0) entered blocking state
  kernel: virbr0: port 2(vnet0) entered listening state
  systemd-timesyncd[542]: Network configuration changed, trying to establish 
connection.
  systemd-timesyncd[542]: Synchronized to time server 10.246.72.3:123 
(10.246.72.3).
  libvirtd[693]: 2020-05-28 06:33:02.188+0000: 731: info : hostname: zeppo
  libvirtd[693]: 2020-05-28 06:33:02.188+0000: 731: warning : 
qemuInterfaceOpenVhostNet:687 : Unable to open vhost-net. Opened so far 0, 
requested 1
  systemd-udevd[1306]: link_config: autonegotiation is unset or enabled, the 
speed and duplex are not writable.
  dnsmasq[911]: reading /etc/resolv.conf
  dnsmasq[911]: using nameserver 127.0.0.53#53
  systemd-timesyncd[542]: Network configuration changed, trying to establish 
connection.
  systemd-timesyncd[542]: Synchronized to time server 10.246.72.3:123 
(10.246.72.3).
  dnsmasq[911]: reading /etc/resolv.conf
  dnsmasq[911]: using nameserver 127.0.0.53#53
  kernel: audit: type=1400 audit(1590647582.424:24): apparmor="STATUS" 
operation="profile_replace" profile="unconfined" 
name="libvirt-2c239120-7dc0-4e83-8c24-1eb5a3081877" pid=1316 
comm="apparmor_parser"
  kernel: BUG: unable to handle kernel paging request at 00000000000056b8
  kernel: IP: 0xffffffffc01efb02
  kernel: PGD 0 P4D 0 
  kernel: Oops: 0000 [#1] SMP PTI
  kernel: Modules linked in: xt_CHECKSUM iptable_mangle ipt_MASQUERADE 
nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 
nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 
xt_tcpudp ip6table_filter ip6_tables iptable_filter loop fuse kvm_intel 
ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash lzo_compress 
raid6_pq pata_acpi
  kernel: CPU: 1 PID: 1323 Comm: CPU 0/KVM Not tainted 4.15.0-1061-kvm 
#62-Ubuntu
  kernel: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 
1.10.2-1ubuntu1 04/01/2014
  kernel: RIP: 0010:0xffffffffc01efb02
  kernel: RSP: 0018:ffffade780fcbcb0 EFLAGS: 00010002
  kernel: RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
  kernel: RDX: 0000000000006c14 RSI: 0000000000000000 RDI: 0000000000000000
  kernel: RBP: ffffade780fcbcb0 R08: 0000000000000000 R09: 0000000000000000
  kernel: R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
  kernel: R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
  kernel: FS:  00007f6ab9c34700(0000) GS:ffff938c7fd00000(0000) 
knlGS:0000000000000000
  kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  kernel: CR2: 00000000000056b8 CR3: 0000000138aac000 CR4: 00000000000026a0
  kernel: Call Trace:
  kernel: 0xffffffffc01f0205
  kernel: 0xffffffffba031ee1
  kernel: 0xffffffffba039cac
  kernel: ? 0xffffffffba039cac
  kernel: 0xffffffffba01cad1
  kernel: ? 0xffffffffba1135d6
  kernel: 0xffffffffba219533
  kernel: ? 0xffffffffba113ad6
  kernel: 0xffffffffba219b24
  kernel: 0xffffffffba001d77
  kernel: 0xffffffffba800081
  kernel: RIP: 0033:0x00007f6ac4e8a5d7
  kernel: RSP: 002b:00007f6ab9c33818 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  kernel: RAX: ffffffffffffffda RBX: 000000000000ae80 RCX: 00007f6ac4e8a5d7
  kernel: RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000013
  kernel: RBP: 000056320fa32220 R08: 000056320ec184f0 R09: 00007f6aac002028
  kernel: R10: 00007f6aac003010 R11: 0000000000000246 R12: 0000000000000000
  kernel: R13: 00007f6acab67000 R14: 000056320fa32220 R15: 000056320fa32220
  kernel: Code: 89 de e8 22 ec ff f9 5b 5d c3 e8 ea c1 ff ff e9 77 ff ff ff 0f 
0b 0f 1f 00 f6 05 00 eb 01 00 10 55 b8 01 00 00 00 48 89 e5 74 19 <48> 8b 87 b8 
56 00 00 48 8b 40 40 48 8b 80 08 08 00 00 48 c1 e8 
  kernel: RIP: 0xffffffffc01efb02 RSP: ffffade780fcbcb0
  kernel: CR2: 00000000000056b8
  kernel: ---[ end trace c8c7461ccaaa2e05 ]---
  systemd-networkd[613]: vnet0: Gained IPv6LL
  systemd-timesyncd[542]: Network configuration changed, trying to establish 
connection.
  systemd-timesyncd[542]: Synchronized to time server 10.246.72.3:123 
(10.246.72.3).
  dnsmasq[911]: reading /etc/resolv.conf
  dnsmasq[911]: using nameserver 127.0.0.53#53
  kernel: virbr0: port 2(vnet0) entered learning state
  kernel: virbr0: port 2(vnet0) entered forwarding state
  kernel: virbr0: topology change detected, propagating
  systemd-networkd[613]: virbr0: Gained carrier
  systemd-timesyncd[542]: Network configuration changed, trying to establish 
connection.
  systemd-timesyncd[542]: Synchronized to time server 10.246.72.3:123 
(10.246.72.3).
  dnsmasq[911]: reading /etc/resolv.conf
  dnsmasq[911]: using nameserver 127.0.0.53#53
  dnsmasq[911]: reading /etc/resolv.conf
  dnsmasq[911]: using nameserver 127.0.0.53#53
  kernel: random: crng init done
  kernel: random: 7 urandom warning(s) missed due to ratelimiting


  This issue cannot be reproduced with 4.15.0-1060-kvm

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-1061-kvm 4.15.0-1061.62
  ProcVersionSignature: User Name 4.15.0-1061.62-kvm 4.15.18
  Uname: Linux 4.15.0-1061-kvm x86_64
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  Date: Thu May 28 06:29:28 2020
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)

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