Ubuntu 18.04 Azure VM host kernel panic
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
Running a container on an DV3 Standard_D8_v3 Azure host, as the container comes up, the Azure host VM kernel panics per the logs below.
Isolated the issue to a process in the container which uses the virtual NICs available on the Azure host. The container also is running Ubuntu 18.04 based packages. The problem happens every single time the container is started, unless its NIC access process is not started.
Has this sort of kernel panic on Azure been seen and what is the root cause and remedy please.
Also the kernel logs on the Azure host show it vulnerable to the following CVE. There are other VMs and containers that can run on the Azure host without a kernel panic on it, but providing this info in case there is some tie-in to the panic.
https:/
Kernel panic from the Azure Host console:
Microsoft.
2020-11-
2020-11-
2020-11-
[11218.537937] PANIC: double fault, error_code: 0x0
[11218.541423] Kernel panic - not syncing: Machine halted.
[11218.541423] CPU: 0 PID: 9281 Comm: vmxt Not tainted 4.15.18+test #1
[11218.541423] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
[11218.541423] Call Trace:
[11218.541423] <#DF>
[11218.541423] dump_stack+
[11218.541423] panic+0xe4/0x244
[11218.541423] df_debug+0x2d/0x30
[11218.541423] do_double_
[11218.541423] double_
[11218.541423] RIP: 0010:0x1a80
[11218.541423] RSP: 0018:0000000000
[11218.541423] RAX: 0000000000000102 RBX: 00000000f7a40768 RCX: 000000000000002f
[11218.541423] RDX: 00000000f7ee9970 RSI: 00000000f7a40700 RDI: 00000000f7c3a000
[11218.541423] RBP: 00000000fffd6430 R08: 0000000000000000 R09: 0000000000000000
[11218.541423] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[11218.541423] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[11218.541423] </#DF>
[11218.541423] Kernel Offset: 0x2a400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000
[11218.541423] ---[ end Kernel panic - not syncing: Machine halted.
[11218.636804] ------------[ cut here ]------------
[11218.640802] sched: Unexpected reschedule of offline CPU#2!
[11218.640802] WARNING: CPU: 0 PID: 9281 at arch/x86/
[11218.640802] Modules linked in: xt_nat xt_u32 vxlan ip6_udp_tunnel udp_tunnel veth nf_conntrack_
[11218.640802] async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic crct10dif_pclmul crc32_pclmul hid_hyperv ghash_clmulni_intel hv_utils hv_storvsc pcbc ptp hv_netvsc hid pps_core scsi_transport_fc hyperv_keyboard aesni_intel aes_x86_64 crypto_simd hyperv_fb floppy glue_helper cryptd psmouse hv_vmbus i2c_piix4 pata_acpi
[11218.640802] CPU: 0 PID: 9281 Comm: vmxt Not tainted 4.15.18+test #1
[11218.640802] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090008 12/07/2018
[11218.640802] RIP: 0010:native_
[11218.640802] RSP: 0018:ffff9446bf
[11218.640802] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000006
[11218.640802] RDX: 0000000000000007 RSI: 0000000000000082 RDI: ffff9446bfc16490
[11218.640802] RBP: ffff9446bfc03e08 R08: 0000000000000000 R09: 0000000000001480
[11218.640802] R10: 0000000000000549 R11: 0000000000000038 R12: ffff9446bfca2880
[11218.640802] R13: 0000000000000000 R14: 000000010029a6b8 R15: ffff9446bfc1cd28
[11218.640802] FS: 000000000000000
[11218.640802] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[11218.640802] CR2: 00000000000021f8 CR3: 000000084c576004 CR4: 00000000003626f0
[11218.640802] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[11218.640802] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[11218.640802] Call Trace:
[11218.640802] <IRQ>
[11218.640802] trigger_
[11218.640802] scheduler_
[11218.640802] ? tick_sched_
[11218.640802] update_
[11218.640802] tick_sched_
[11218.640802] tick_sched_
[11218.640802] __hrtimer_
[11218.640802] hrtimer_
[11218.640802] vmbus_isr+
[11218.640802] hyperv_
[11218.640802] hyperv_
[11218.640802] </IRQ>
[11218.640802] <#DF>
[11218.640802] RIP: 0010:panic+
[11218.640802] RSP: 0018:fffffe0000
[11218.640802] RAX: 0000000000000034 RBX: fffffe0000007f00 RCX: 0000000000000006
[11218.640802] RDX: 0000000000000000 RSI: 0000000000000096 RDI: ffff9446bfc16490
[11218.640802] RBP: fffffe0000007f08 R08: 0000000000000000 R09: 000000000000147e
[11218.640802] R10: 0000000000000000 R11: 0000000000000038 R12: 0000000000000000
[11218.640802] R13: 0000000000000000 R14: 000000084c577804 R15: 0000000000000000
[11218.640802] df_debug+0x2d/0x30
[11218.640802] do_double_
[11218.640802] double_
[11218.640802] RIP: 0010:0x1a80
[11218.640802] RSP: 0018:0000000000
[11218.640802] RAX: 0000000000000102 RBX: 00000000f7a40768 RCX: 000000000000002f
[11218.640802] RDX: 00000000f7ee9970 RSI: 00000000f7a40700 RDI: 00000000f7c3a000
[11218.640802] RBP: 00000000fffd6430 R08: 0000000000000000 R09: 0000000000000000
[11218.640802] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[11218.640802] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[11218.640802] </#DF>
[11218.640802] Code: 92 c0 84 c0 74 17 48 8b 05 7f 71 15 01 be fd 00 00 00 48 8b 40 30 e8 31 b6 ba 00 5d c3 89 fe 48 c7 c7 10 e3 4b ac e8 b1 49 03 00 <0f> 0b 5d c3 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00
[11218.640802] ---[ end trace 857d64f92b00ceb2 ]---
[11221.669166] hyperv_fb: Unable to send packet via vmbus
[11221.669167] hyperv_fb: Unable to send packet via vmbus
[11221.669167] hyperv_fb: Unable to send packet via vmbus
[11221.669167] hyperv_fb: Unable to send packet via vmbu
CVE References
Changed in linux-azure (Ubuntu): | |
status: | New → Invalid |
Version info about the Azure Ubuntu Host VM:
root@vm-5:~# uname -a
Linux vm-5 4.15.18+test #1 SMP Mon Oct 29 03:40:39 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
root@vm-5:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic
root@vm-5:~#