Hello Ross,
can you help us to verify this fix while you're back?
Thanks!
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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:
Fix Committed
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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