Just to note: since one of the kernel upgrades, this issue is not
present anymore. I'm not sure which version fixed it.
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https://bugs.launchpad.net/bugs/1773184
Title:
In the above, the middle one that crashes (so the 1st level of guests).
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Title:
Starting a KVM guest in a guest (nested VM) crash
It started right after I tried to run our OpenStack CI (so the nested
operation) on Bionic (with OpenStack Queens). Previously I used Xenial (with
kernel 4.4.0), that still works.
The host kernel is still from Xenial.
So:
Host with KVM->Guest with KVM->Nested Guest
Xenial (4.4) -> Bionic
The problem is there with 4.17-rc6
ompute2 login: [ 5290.132368] general protection fault: [#1] SMP PTI
[ 5290.133501] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel ebt_arp
ebt_among ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment
xt_physdev vhost_net vhost tap
apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143882/+files/Lspci.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143888/+files/WifiSyslog.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143884/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143883/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143885/+files/ProcInterrupts.txt
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apport information
** Tags added: apport-collected ec2-images
** Description changed:
linux-image-4.15.0.22 (20, and probably earlier, too) panics when
starting a guest VM in a nested manner.
compute1 login: [ 4847.733004] general protection fault: [#1] SMP PTI
[ 4847.736595]
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143887/+files/UdevDb.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1773184/+attachment/5143886/+files/ProcModules.txt
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Public bug reported:
linux-image-4.15.0.22 (20, and probably earlier, too) panics when
starting a guest VM in a nested manner.
compute1 login: [ 4847.733004] general protection fault: [#1] SMP PTI
[ 4847.736595] Modules linked in: vxlan ip6_udp_tunnel udp_tunnel ebt_arp
ebt_among
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