[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
Just to note: since one of the kernel upgrades, this issue is not present anymore. I'm not sure which version fixed it. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 4847.832993] RIP: native_write_cr4+0x4/0x10 RSP: 9daf4119bb70 [ 4847.834658] ---[ end trace d54d1c7bca906f72 ]--- [ 4847.838001] Fixing recursive fault but reboot is needed! [ 4850.411516] general protection fault: [#2] SMP PTI [ 4850.414947] 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
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
** Tags added: cscc -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 4847.832993] RIP: native_write_cr4+0x4/0x10 RSP: 9daf4119bb70 [ 4847.834658] ---[ end trace d54d1c7bca906f72 ]--- [ 4847.838001] Fixing recursive fault but reboot is needed! [ 4850.411516] general protection fault: [#2] SMP PTI [ 4850.414947] 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 xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap xt_CHECKSUM iptable_mangle
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
just adding some more info. i also deploy openstack rocky on a ubuntu 18.04 host Linux cloud-5 4.15.0-43-generic #46-Ubuntu SMP Thu Dec 6 14:45:28 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux with ubuntu 18.04 l1 guest running Linux numa-migration-1 4.15.0-45-generic #48-Ubuntu SMP Tue Jan 29 16:28:13 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux and when i lauch a cirros l2 guest i get very similar kvm_intel call traces. if i upgrade the l1 guest kernel to the latest linux-virtual-hwe-18.04-edge kernel which is currently Linux numa-migration-2 4.18.0-15-generic #16~18.04.1-Ubuntu SMP Thu Feb 7 14:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux i still get the same crashes when i launch the l2 cirros image i was originally wondering if this was some how related to the gust cpu model so i tried seting the l1 and l2 guest cpu_mode to host-passthough to maximies the feature that were availabel tot he guest i then also tried to limit the l2 guest to the kvm64 cpu-model so that the l2 guest used the minium set of kvm feature but this did not seam to have an benifical effect. the host is useign Intel(R) Xeon(R) CPU E5-2697 v2 @ 2.70GHz cpus which i have used in the past with ubuntu 16.04 and nested virt without issue so this seams to be related to the 18.04 kenel in some way. the fact that i am seeing the same issue on a ubuntu 18.04 host with an 18.04 l1 guest and that gyurco is only seeing this with an 18.04 l1 guest makes me think that this is likely an issue with kvm in the l1 guests kernel not the hosts kernel. im going to try and confrim that with a centos 7 l1 guest tommorow but since i would like to be able to do python 3.6/3.7 testing in my local settup i would prefer to use a Ubuntu 18.04 l1 guest in the long run so i hope this can be resolved. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681]
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
In the above, the middle one that crashes (so the 1st level of guests). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 4847.832993] RIP: native_write_cr4+0x4/0x10 RSP: 9daf4119bb70 [ 4847.834658] ---[ end trace d54d1c7bca906f72 ]--- [ 4847.838001] Fixing recursive fault but reboot is needed! [ 4850.411516] general protection fault: [#2] SMP PTI [ 4850.414947] 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 xt_set ip_set_hash_net ip_set
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
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 (4.15)-> any other - crash Xenial (4.4) -> Xenial (4.4) -> any other - works -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 4847.832993] RIP: native_write_cr4+0x4/0x10 RSP: 9daf4119bb70 [ 4847.834658] ---[ end trace d54d1c7bca906f72 ]--- [ 4847.838001] Fixing
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem. ** Changed in: linux (Ubuntu) Status: Confirmed => Triaged ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Triaged ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Triaged Status in linux source package in Bionic: Triaged Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
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 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds mac_hid serio_raw qemu_fw_cfg sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq [ 5290.153839] libcrc32c raid1 raid0 multipath linear crct10dif_pclmul hid_generic crc32_pclmul ghash_clmulni_intel pcbc aesni_intel usbhid aes_x86_64 crypto_simd cryptd glue_helper cirrus ttm hid drm_kms_helper psmouse syscopyarea sysfillrect sysimgblt fb_sys_fops virtio_blk virtio_net drm i2c_piix4 floppy pata_acpi [last unloaded: kvm_intel] [ 5290.162975] CPU: 0 PID: 13660 Comm: CPU 0/KVM Not tainted 4.17.0-041700rc6-generic #201805202330 [ 5290.165690] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 5290.168450] RIP: 0010:native_write_cr4+0x4/0x10 [ 5290.169847] RSP: 0018:c0028128bb70 EFLAGS: 00010006 [ 5290.171383] RAX: 000626f0 RBX: 0046 RCX: 9b6b3fc0 [ 5290.173624] RDX: 9b6b3fc14020 RSI: 9b6b3fc25040 RDI: 000606f0 [ 5290.175694] RBP: c0028128bb70 R08: 00027040 R09: 82bb9eb9 [ 5290.18] R10: fa1988bb2a00 R11: 0048 R12: 00025040 [ 5290.179295] R13: R14: 9b6b31ec09a0 R15: 9b6b31ed5270 [ 5290.180780] FS: 7fc542763700() GS:9b6b3fc0() knlGS: [ 5290.183096] CS: 0010 DS: ES: CR0: 80050033 [ 5290.184583] CR2: 7fc53380cd50 CR3: 000193a0a003 CR4: 000626f0 [ 5290.186146] Call Trace: [ 5290.186753] hardware_disable+0xaa/0xc0 [kvm_intel] [ 5290.188150] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 5290.190099] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 5290.191639] hardware_disable_nolock+0x2b/0x30 [kvm] [ 5290.193253] on_each_cpu+0x46/0x60 [ 5290.194075] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 5290.195800] hardware_disable_all+0x1a/0x30 [kvm] [ 5290.197091] kvm_put_kvm+0x203/0x260 [kvm] [ 5290.198370] kvm_vm_release+0x21/0x30 [kvm] [ 5290.199481] __fput+0xea/0x220 [ 5290.200445] fput+0xe/0x10 [ 5290.201442] task_work_run+0x9d/0xc0 [ 5290.202547] do_exit+0x2ec/0xb50 [ 5290.203640] do_group_exit+0x43/0xb0 [ 5290.204677] get_signal+0x27f/0x5c0 [ 5290.205368] do_signal+0x37/0x730 [ 5290.206005] ? do_futex+0x325/0x500 [ 5290.206774] exit_to_usermode_loop+0x8a/0xd0 [ 5290.207664] do_syscall_64+0xfb/0x120 [ 5290.208345] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 5290.209667] RIP: 0033:0x7fc54d01d10d [ 5290.212016] RSP: 002b:7fc542762798 EFLAGS: 0246 ORIG_RAX: 00ca [ 5290.215475] RAX: fe00 RBX: 562fd279c0d0 RCX: 7fc54d01d10d [ 5290.219910] RDX: 0002 RSI: 0080 RDI: 562fd150fe00 [ 5290.224956] RBP: 562fd279c0f4 R08: 562fd150fe00 R09: [ 5290.227944] R10: R11: 0246 R12: 562fd279c0fc [ 5290.231168] R13: R14: 562fd150fe00 R15: 000f [ 5290.234173] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 5290.241264] RIP: native_write_cr4+0x4/0x10 RSP: c0028128bb70 [ 5290.244693] ---[ end trace b9a4c634f5e30633 ]--- [ 5290.247044] Fixing recursive fault but reboot is needed! [ 5290.807745] general protection fault: [#2] SMP PTI [ 5290.810795] 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 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds mac_hid serio_raw qemu_fw_cfg sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.17 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17-rc6 ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1773184 Title: Starting a KVM guest in a guest (nested VM) crash the kernel Status in linux package in Ubuntu: Incomplete Bug description: 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 ip6table_raw nf_conntrack_ipv6 nf_defrag_ipv6 xt_CT xt_mac xt_comment xt_physdev xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3
[Kernel-packages] [Bug 1773184] Re: Starting a KVM guest in a guest (nested VM) crash the kernel
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] 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 xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter bridge stp llc nls_iso8859_1 kvm irqbypass joydev input_leds serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor [ 4847.756237] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_net floppy [last unloaded: kvm_intel] [ 4847.762893] CPU: 1 PID: 13789 Comm: CPU 0/KVM Not tainted 4.15.0-22-generic #24-Ubuntu [ 4847.765154] Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.10.2-1ubuntu1~cloud0 04/01/2014 [ 4847.767764] RIP: 0010:native_write_cr4+0x4/0x10 [ 4847.769085] RSP: 0018:9daf4119bb70 EFLAGS: 00010006 [ 4847.770629] RAX: 000626e0 RBX: 0046 RCX: 8edcbfc8 [ 4847.772771] RDX: 8edcbfc94020 RSI: 8edcbfca5040 RDI: 000606e0 [ 4847.774965] RBP: 9daf4119bb70 R08: fff8 R09: 000d [ 4847.777175] R10: c078c76e2000 R11: 0cd0 R12: 00025040 [ 4847.779213] R13: R14: 8edc438409a0 R15: 8edc43855278 [ 4847.781230] FS: 7f9a09a02700() GS:8edcbfc8() knlGS: [ 4847.783548] CS: 0010 DS: ES: CR0: 80050033 [ 4847.785233] CR2: 7f99fb80cd50 CR3: 000152e0a002 CR4: 000626e0 [ 4847.787225] Call Trace: [ 4847.788062] hardware_disable+0xaa/0xc0 [kvm_intel] [ 4847.789460] ? vcpu_stat_get_per_vm_open+0x20/0x20 [kvm] [ 4847.791025] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 4847.792664] hardware_disable_nolock+0x2b/0x30 [kvm] [ 4847.794260] on_each_cpu+0x46/0x60 [ 4847.795302] hardware_disable_all_nolock+0x35/0x40 [kvm] [ 4847.796896] hardware_disable_all+0x1a/0x30 [kvm] [ 4847.798267] kvm_put_kvm+0x1f8/0x260 [kvm] [ 4847.799470] kvm_vm_release+0x21/0x30 [kvm] [ 4847.800758] __fput+0xea/0x220 [ 4847.801681] fput+0xe/0x10 [ 4847.802602] task_work_run+0x9d/0xc0 [ 4847.803692] do_exit+0x2ec/0xb40 [ 4847.804676] do_group_exit+0x43/0xb0 [ 4847.805719] get_signal+0x27b/0x590 [ 4847.806742] do_signal+0x37/0x730 [ 4847.807774] ? do_futex+0x325/0x500 [ 4847.808803] ? SyS_futex+0x13b/0x180 [ 4847.809852] ? restore_altstack+0x51/0x70 [ 4847.811017] exit_to_usermode_loop+0x73/0xd0 [ 4847.812299] do_syscall_64+0x115/0x130 [ 4847.813401] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 4847.814808] RIP: 0033:0x7f9a142bc10d [ 4847.815914] RSP: 002b:7f9a09a01798 EFLAGS: 0246 ORIG_RAX: 00ca [ 4847.818100] RAX: fe00 RBX: 5583a8961060 RCX: 7f9a142bc10d [ 4847.820065] RDX: 0002 RSI: 0080 RDI: 5583a6925e00 [ 4847.822029] RBP: 5583a8961084 R08: 5583a6925e00 R09: [ 4847.824002] R10: R11: 0246 R12: 5583a896108c [ 4847.825949] R13: R14: 5583a6925e00 R15: 000f [ 4847.827922] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 4847.832993] RIP: native_write_cr4+0x4/0x10 RSP: 9daf4119bb70 [ 4847.834658] ---[ end trace d54d1c7bca906f72 ]--- [ 4847.838001] Fixing recursive fault but reboot is needed! [ 4850.411516] general protection fault: [#2] SMP PTI [ 4850.414947] 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 xt_set ip_set_hash_net ip_set nfnetlink vhost_net vhost tap 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 ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_intel ip6table_filter ip6_tables iptable_filter ebtable_filter ebtable_nat ebtables iptable_raw br_netfilter
