Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.18 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/v4.18-rc7 ** 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/1784393 Title: Kernel Crash when running on nested environment Status in linux package in Ubuntu: Incomplete Bug description: When running an Ubuntu 17.10 or 18.04 VM and then running a Kata- Container (which creates a new VM), sometimes I get a kernel Panic in the First VM launched. I don't know what is the Host distro, since this is a cloud environment. Using this script, it is easily reproducible: https://gist.github.com/chavafg/d00fa4dbefb144e6b7eeceb5e1ad9c65 This is the kernel panic got from Ubuntu 17.10: [ 7893.642642] general protection fault: 0000 [#1] SMP PTI [ 7893.644919] Modules linked in: vhost_net vhost macvtap macvlan tap veth kvm_intel kvm irqbypass ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter xt_conntrack nf_nat nf_conntrack br_netfilter bridge stp llc overlay nls_iso8859_1 ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel joydev input_leds serio_raw parport_pc parport ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid aesni_intel aes_x86_64 crypto_simd floppy cryptd glue_helper psmouse virtio_net virtio_blk [ 7893.666649] [last unloaded: irqbypass] [ 7893.667910] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.13.0-45-generic #50-Ubuntu [ 7893.670283] Hardware name: RDO OpenStack Compute, BIOS 1.11.0-2.el7 04/01/2014 [ 7893.672483] task: ffffffffb0412480 task.stack: ffffffffb0400000 [ 7893.674218] RIP: 0010:native_write_cr4+0x4/0x10 [ 7893.675549] RSP: 0018:ffff8b08bfc03f50 EFLAGS: 00010006 [ 7893.677138] RAX: 00000000000626f0 RBX: 0000000000000000 RCX: ffff8b08bfc23cd0 [ 7893.679254] RDX: ffff8b08bfc14020 RSI: ffff8b08bfc23cd0 RDI: 00000000000606f0 [ 7893.681478] RBP: ffff8b08bfc03f50 R08: 00000a6d223ad8ee R09: ffff8b08ac931800 [ 7893.683695] R10: 00000001001cf7c1 R11: 0000000000000061 R12: 0000000000023cd0 [ 7893.685895] R13: 0000000000000001 R14: ffff8b08bff4a800 R15: 000000000008a000 [ 7893.688171] FS: 0000000000000000(0000) GS:ffff8b08bfc00000(0000) knlGS:0000000000000000 [ 7893.690855] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7893.692658] CR2: 00007fb2f8fdc020 CR3: 000000035b80a003 CR4: 00000000000626f0 [ 7893.694909] Call Trace: [ 7893.695837] <IRQ> [ 7893.696664] hardware_disable+0x99/0xb0 [kvm_intel] [ 7893.698380] kvm_arch_hardware_disable+0x19/0x40 [kvm] [ 7893.700043] hardware_disable_nolock+0x2b/0x30 [kvm] [ 7893.701712] flush_smp_call_function_queue+0x5c/0x100 [ 7893.703335] generic_smp_call_function_single_interrupt+0x13/0x30 [ 7893.705321] smp_call_function_interrupt+0x2d/0x40 [ 7893.706883] call_function_interrupt+0x1af/0x1c0 [ 7893.708529] </IRQ> [ 7893.709361] RIP: 0010:native_safe_halt+0x6/0x10 [ 7893.710878] RSP: 0018:ffffffffb0403df8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff03 [ 7893.713311] RAX: ffffffffafb1be10 RBX: ffffffffb0660720 RCX: 0000000000000000 [ 7893.715635] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 7893.717890] RBP: ffffffffb0403df8 R08: 0000000000000002 R09: ffff8b08ac931800 [ 7893.720044] R10: 00000001001cf7c1 R11: 0000000000000061 R12: 0000000000000000 [ 7893.722234] R13: 0000000000000000 R14: ffff8b08bff4a800 R15: 000000000008a000 [ 7893.724426] ? __cpuidle_text_start+0x8/0x8 [ 7893.725828] default_idle+0x20/0x100 [ 7893.727209] arch_cpu_idle+0x15/0x20 [ 7893.728450] default_idle_call+0x23/0x30 [ 7893.729613] do_idle+0x16f/0x1e0 [ 7893.730643] cpu_startup_entry+0x73/0x80 [ 7893.731825] rest_init+0xbc/0xc0 [ 7893.732840] start_kernel+0x4c8/0x4e9 [ 7893.733974] ? early_idt_handler_array+0x120/0x120 [ 7893.735306] x86_64_start_reservations+0x24/0x26 [ 7893.736607] x86_64_start_kernel+0x13a/0x15d [ 7893.737887] secondary_startup_64+0x9f/0xa0 [ 7893.739139] 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 [ 7893.744104] RIP: native_write_cr4+0x4/0x10 RSP: ffff8b08bfc03f50 [ 7893.745775] ---[ end trace fccf997ea9a59d36 ]--- [ 7893.747097] Kernel panic - not syncing: Fatal exception in interrupt [ 7893.749271] Kernel Offset: 0x2e200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 7893.752179] ---[ end Kernel panic - not syncing: Fatal exception in interrupt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1784393/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
