group.of.nepali.translators team mailing list archive

[Tim Gardner <tim.gardner@xxxxxxxxxxxxx>]

https://lists.ubuntu.com/archives/kernel-team/2016-December/081443.html

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

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

** Changed in: linux (Ubuntu Xenial)
     Assignee: (unassigned) => Ross Lagerwall (rosslagerwall)

** Changed in: linux (Ubuntu)
       Status: Confirmed => Fix Released

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भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1649821

Title:
  Boot crash in xen_send_IPI_one

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  In Progress

Bug description:
  Every hundred boots or so when booting Ubuntu 16.04 under Xen, it
  crashes early on boot with the following stack trace:

    kernel BUG at /build/linux-Ay7j_C/linux-4.4.0/drivers/xen/events/events_base.c:1210!
    invalid opcode: 0000 [#1] SMP
    ...
    RIP: 0010:[<ffffffff814c97c9>]  [<ffffffff814c97c9>] xen_send_IPI_one+0x59/0x60
    ...
    Call Trace:
     [<ffffffff8102be9e>] xen_qlock_kick+0xe/0x10
     [<ffffffff810cabc2>] __pv_queued_spin_unlock+0xb2/0xf0
     [<ffffffff810ca6d1>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20
     [<ffffffff81052936>] ? check_tsc_warp+0x76/0x150
     [<ffffffff81052aa6>] check_tsc_sync_source+0x96/0x160
     [<ffffffff81051e28>] native_cpu_up+0x3d8/0x9f0
     [<ffffffff8102b315>] xen_hvm_cpu_up+0x35/0x80
     [<ffffffff8108198c>] _cpu_up+0x13c/0x180
     [<ffffffff81081a4a>] cpu_up+0x7a/0xa0
     [<ffffffff81f80dfc>] smp_init+0x7f/0x81
     [<ffffffff81f5a121>] kernel_init_freeable+0xef/0x212
     [<ffffffff81817f30>] ? rest_init+0x80/0x80
     [<ffffffff81817f3e>] kernel_init+0xe/0xe0
     [<ffffffff8182488f>] ret_from_fork+0x3f/0x70
     [<ffffffff81817f30>] ? rest_init+0x80/0x80

  This is fixed by the following commit:
  https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/arch/x86/xen?id=707e59ba494372a90d245f18b0c78982caa88e48

  Unfortunately this wasn't backported to Linux 4.4. Can you please
  include this in the next Ubuntu 16.04 kernel release?

  Thanks
  Ross
  --- 
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Dec 14 11:48 seq
   crw-rw---- 1 root audio 116, 33 Dec 14 11:48 timer
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.20.1-0ubuntu2.2
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=637c02d7-6135-4ecc-8273-b014d21cf217
  IwConfig: Error: [Errno 2] No such file or directory
  Lsusb:
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Xen HVM domU
  Package: linux (not installed)
  PciMultimedia:
   
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-53-generic root=UUID=6748a82f-b075-401e-ac74-0ebe865003f2 ro console=hvc0 console=tty0
  ProcVersionSignature: Ubuntu 4.4.0-53.74-generic 4.4.30
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-53-generic N/A
   linux-backports-modules-4.4.0-53-generic  N/A
   linux-firmware                            1.157.5
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  xenial
  Uname: Linux 4.4.0-53-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 12/07/2016
  dmi.bios.vendor: Xen
  dmi.bios.version: 4.7.1-xs131890-d
  dmi.chassis.type: 1
  dmi.chassis.vendor: Xen
  dmi.modalias: dmi:bvnXen:bvr4.7.1-xs131890-d:bd12/07/2016:svnXen:pnHVMdomU:pvr4.7.1-xs131890-d:cvnXen:ct1:cvr:
  dmi.product.name: HVM domU
  dmi.product.version: 4.7.1-xs131890-d
  dmi.sys.vendor: Xen

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