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[Bug 1573231] Re: Kernel Panic on EC2 After Upgrading from 14.04 to 16.04 via do-release-upgrade -d

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>
Date: Thu, 28 Apr 2016 14:56:53 -0000
Reply-to: Bug 1573231 <1573231@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 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/v4.6-rc5-wily/

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Xenial)
       Status: New => Triaged

** Changed in: linux (Ubuntu Xenial)
       Status: Triaged => Confirmed

** Tags added: kernel-key

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https://bugs.launchpad.net/bugs/1573231

Title:
  Kernel Panic on EC2 After Upgrading from 14.04 to 16.04 via do-
  release-upgrade -d

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Xenial:
  Confirmed

Bug description:
  [    0.000000] Initializing cgroup subsys cpuset
  [    0.000000] Initializing cgroup subsys cpu
  [    0.000000] Initializing cgroup subsys cpuacct
  [    0.000000] Linux version 4.4.0-21-generic (buildd@lgw01-21) (gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2) ) #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 (Ubuntu 4.4.0-21.37-generic 4.4.6)
  [    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=8ea401db-b84b-4cd6-a628-d72f30bbf1e5 ro console=tty1 console=ttyS0
  [    0.000000] KERNEL supported cpus:
  [    0.000000]   Intel GenuineIntel
  [    0.000000]   AMD AuthenticAMD
  [    0.000000]   Centaur CentaurHauls
  [    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
  [    0.000000] x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers'
  [    0.000000] x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers'
  [    0.000000] x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers'
  [    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
  [    0.000000] x86/fpu: Using 'eager' FPU context switches.
  [    0.000000] e820: BIOS-provided physical RAM map:
  [    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009dfff] usable
  [    0.000000] BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved
  [    0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
  [    0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000efffffff] usable
  [    0.000000] BIOS-e820: [mem 0x00000000fc000000-0x00000000ffffffff] reserved
  [    0.000000] BIOS-e820: [mem 0x0000000100000000-0x00000001efffffff] usable
  [    0.000000] NX (Execute Disable) protection: active
  [    0.000000] SMBIOS 2.4 present.
  [    0.000000] Hypervisor detected: Xen
  [    0.000000] Xen version 4.2.
  [    0.000000] Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs.
  [    0.000000] Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks.
  [    0.000000] You might have to change the root device
  [    0.000000] from /dev/hd[a-d] to /dev/xvd[a-d]
  [    0.000000] in your root= kernel command line option
  [    0.000000] e820: last_pfn = 0x1f0000 max_arch_pfn = 0x400000000
  [    0.000000] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WC  UC- WT  
  [    0.000000] e820: last_pfn = 0xf0000 max_arch_pfn = 0x400000000
  [    0.000000] found SMP MP-table at [mem 0x000fbba0-0x000fbbaf] mapped at [ffff8800000fbba0]
  [    0.000000] Scanning 1 areas for low memory corruption
  [    0.000000] RAMDISK: [mem 0x3407e000-0x36036fff]
  [    0.000000] ACPI: Early table checksum verification disabled
  [    0.000000] ACPI: RSDP 0x00000000000EA020 000024 (v02 Xen   )
  [    0.000000] ACPI: XSDT 0x00000000FC00F5A0 000054 (v01 Xen    HVM      00000000 HVML 00000000)
  [    0.000000] ACPI: FACP 0x00000000FC00F260 0000F4 (v04 Xen    HVM      00000000 HVML 00000000)
  [    0.000000] ACPI: DSDT 0x00000000FC0035E0 00BBF6 (v02 Xen    HVM      00000000 INTL 20090123)
  [    0.000000] ACPI: FACS 0x00000000FC0035A0 000040
  [    0.000000] ACPI: FACS 0x00000000FC0035A0 000040
  [    0.000000] ACPI: APIC 0x00000000FC00F360 0000D8 (v02 Xen    HVM      00000000 HVML 00000000)
  [    0.000000] ACPI: HPET 0x00000000FC00F4B0 000038 (v01 Xen    HVM      00000000 HVML 00000000)
  [    0.000000] ACPI: WAET 0x00000000FC00F4F0 000028 (v01 Xen    HVM      00000000 HVML 00000000)
  [    0.000000] ACPI: SSDT 0x00000000FC00F520 000031 (v02 Xen    HVM      00000000 INTL 20090123)
  [    0.000000] ACPI: SSDT 0x00000000FC00F560 000031 (v02 Xen    HVM      00000000 INTL 20090123)
  [    0.000000] No NUMA configuration found
  [    0.000000] Faking a node at [mem 0x0000000000000000-0x00000001efffffff]
  [    0.000000] NODE_DATA(0) allocated [mem 0x1efff7000-0x1efffbfff]
  [    0.000000] Zone ranges:
  [    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
  [    0.000000]   DMA32    [mem 0x0000000001000000-0x00000000ffffffff]
  [    0.000000]   Normal   [mem 0x0000000100000000-0x00000001efffffff]
  [    0.000000]   Device   empty
  [    0.000000] Movable zone start for each node
  [    0.000000] Early memory node ranges
  [    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009dfff]
  [    0.000000]   node   0: [mem 0x0000000000100000-0x00000000efffffff]
  [    0.000000]   node   0: [mem 0x0000000100000000-0x00000001efffffff]
  [    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x00000001efffffff]
  [    0.000000] ACPI: PM-Timer IO Port: 0xb008
  [    0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-47
  [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
  [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 low level)
  [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 low level)
  [    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 low level)
  [    0.000000] Using ACPI (MADT) for SMP configuration information
  [    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
  [    0.000000] smpboot: Allowing 15 CPUs, 13 hotplug CPUs
  [    0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
  [    0.000000] PM: Registered nosave memory: [mem 0x0009e000-0x0009ffff]
  [    0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff]
  [    0.000000] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff]
  [    0.000000] PM: Registered nosave memory: [mem 0xf0000000-0xfbffffff]
  [    0.000000] PM: Registered nosave memory: [mem 0xfc000000-0xffffffff]
  [    0.000000] e820: [mem 0xf0000000-0xfbffffff] available for PCI devices
  [    0.000000] Booting paravirtualized kernel on Xen HVM
  [    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
  [    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:15 nr_node_ids:1
  [    0.000000] PERCPU: Embedded 33 pages/cpu @ffff8801e7a00000 s98008 r8192 d28968 u262144
  [    0.000000] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes)
  [    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total pages: 1935240
  [    0.000000] Policy zone: Normal
  [    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=8ea401db-b84b-4cd6-a628-d72f30bbf1e5 ro console=tty1 console=ttyS0
  [    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
  [    0.000000] Memory: 7621704K/7863924K available (8356K kernel code, 1278K rwdata, 3920K rodata, 1476K init, 1292K bss, 242220K reserved, 0K cma-reserved)
  [    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=15, Nodes=1
  [    0.000000] Hierarchical RCU implementation.
  [    0.000000] 	Build-time adjustment of leaf fanout to 64.
  [    0.000000] 	RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=15.
  [    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=15
  [    0.000000] NR_IRQS:16640 nr_irqs:952 16
  [    0.000000] xen:events: Using 2-level ABI
  [    0.000000] xen:events: Xen HVM callback vector for event delivery is enabled
  [    0.000000] Console: colour VGA+ 80x25
  [    0.000000] console [tty1] enabled
  [    0.000000] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
  [    0.000000] console [ttyS0] enabled
  [    0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 30580167144 ns
  [    0.000000] tsc: Detected 2500.038 MHz processor
  [    0.012000] Calibrating delay loop (skipped), value calculated using timer frequency.. 5000.07 BogoMIPS (lpj=10000152)
  [    0.016003] pid_max: default: 32768 minimum: 301
  [    0.020008] ACPI: Core revision 20150930
  [    0.029145] ACPI: 3 ACPI AML tables successfully acquired and loaded
  [    0.032827] Security Framework initialized
  [    0.036002] Yama: becoming mindful.
  [    0.040021] AppArmor: AppArmor initialized
  [    0.044434] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes)
  [    0.053113] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes)
  [    0.056758] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
  [    0.064010] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes)
  [    0.068206] Initializing cgroup subsys io
  [    0.072005] Initializing cgroup subsys memory
  [    0.076009] Initializing cgroup subsys devices
  [    0.080004] Initializing cgroup subsys freezer
  [    0.082912] Initializing cgroup subsys net_cls
  [    0.084004] Initializing cgroup subsys perf_event
  [    0.088004] Initializing cgroup subsys net_prio
  [    0.092004] Initializing cgroup subsys hugetlb
  [    0.095088] Initializing cgroup subsys pids
  [    0.096059] CPU: Physical Processor ID: 0
  [    0.100763] mce: CPU supports 2 MCE banks
  [    0.104024] Last level iTLB entries: 4KB 512, 2MB 8, 4MB 8
  [    0.108002] Last level dTLB entries: 4KB 512, 2MB 0, 4MB 0, 1GB 4
  [    0.113286] Freeing SMP alternatives memory: 28K (ffffffff820b2000 - ffffffff820b9000)
  [    0.125920] ftrace: allocating 31878 entries in 125 pages
  [    0.160059] divide error: 0000 [#1] SMP 
  [    0.163586] Modules linked in:
  [    0.164000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-21-generic #37-Ubuntu
  [    0.164000] Hardware name: Xen HVM domU, BIOS 4.2.amazon 12/07/2015
  [    0.164000] task: ffff8801e6618000 ti: ffff8801e6620000 task.ti: ffff8801e6620000
  [    0.164000] RIP: 0010:[<ffffffff81f6f5de>]  [<ffffffff81f6f5de>] smp_store_boot_cpu_info+0x51/0x17f
  [    0.164000] RSP: 0000:ffff8801e6623ea8  EFLAGS: 00010286
  [    0.164000] RAX: 000000000000000e RBX: ffffffff81f34f60 RCX: 0000000000000000
  [    0.164000] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801e7a0a180
  [    0.164000] RBP: ffff8801e6623ec8 R08: 0000000000000000 R09: 0000000000007fff
  [    0.164000] R10: ffffffff81a11ee0 R11: ffffffff81a11ec0 R12: 00000000ffffffff
  [    0.164000] R13: 000000000000a0a0 R14: 000000000000a192 R15: 0000000000000000
  [    0.164000] FS:  0000000000000000(0000) GS:ffff8801e7a00000(0000) knlGS:0000000000000000
  [    0.164000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [    0.164000] CR2: ffff8801effff000 CR3: 0000000001e0a000 CR4: 00000000001406f0
  [    0.164000] Stack:
  [    0.164000]  ffffffff81f34f60 0000000000000100 000000000000a0a0 0000000000000000
  [    0.164000]  ffff8801e6623ef8 ffffffff81f6f763 ffffffff82089ef8 ffff8801e66186a8
  [    0.164000]  0000000000000001 0000000000000000 ffff8801e6623f08 ffffffff81f64e10
  [    0.164000] Call Trace:
  [    0.164000]  [<ffffffff81f6f763>] native_smp_prepare_cpus+0x57/0x2eb
  [    0.164000]  [<ffffffff81f64e10>] xen_hvm_smp_prepare_cpus+0x9/0x2e
  [    0.164000]  [<ffffffff81f5a0e5>] kernel_init_freeable+0xb3/0x212
  [    0.164000]  [<ffffffff81817f30>] ? rest_init+0x80/0x80
  [    0.164000]  [<ffffffff81817f3e>] kernel_init+0xe/0xe0
  [    0.164000]  [<ffffffff8182488f>] ret_from_fork+0x3f/0x70
  [    0.164000]  [<ffffffff81817f30>] ? rest_init+0x80/0x80
  [    0.164000] Code: 53 41 83 cc ff 49 c7 c6 92 a1 00 00 48 89 c7 f3 a5 66 c7 80 da 00 00 00 00 00 0f b7 35 b4 36 fc ff 8b 05 16 88 27 00 8d 44 06 ff <f7> f6 31 d2 89 05 78 4a fc ff 8d 86 ff 7f 00 00 f7 f6 be c0 00 
  [    0.164000] RIP  [<ffffffff81f6f5de>] smp_store_boot_cpu_info+0x51/0x17f
  [    0.164000]  RSP <ffff8801e6623ea8>
  [    0.336005] ---[ end trace 1a9aebc980234339 ]---
  [    0.340017] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
  [    0.340017] 

  
  System won't boot at all, so there's a limit to the additional information I can get, but if nothing can be done from the above, let me know what/how to provide additional information needed. Thanks!

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