This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
apport-collect 1630924
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
--
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/1630924
Title:
Kdump through NMI SMP and single core not working on Ubuntu16.10
Status in linux package in Ubuntu:
Incomplete
Bug description:
During some tests I've encountered an issue with kdump through NMI SMP
and single core. After kdump configuration, when I trigger the crash
through an NMI call from the host, the VM will panic, however it will
not write the vmcore dump files and neither reboot.
REPRO STEPS:
1. configure kdump
- crashkernel=512M-:384M /boot/grub/grub.cfg
- USE_KDUMP=1 /etc/default/kdump-tools
2. after configuration reboot the VM
3. check kdump status
- cat /sys/kernel/kexec_*
- service kdump-tools status
4. configure NMI
- sysctl -w kernel.unknown_nmi_panic=1
5. trigger a crash from host
- Debug-VM -Name $vmName -InjectNonMaskableInterrupt -ComputerName $hvServer
-Force
This case also applies to:
-Ubuntu 16.10 generation 2(kernel version: 4.8.0-17-generic)
-Ubuntu 16.04.1(kernel: 4.4.0-38-generic)
-Ubuntu 14.04.5(kernel: 3.19.0-69-generic)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1630924/+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
