Comment 3 for bug 1630924

Revision history for this message
Chris Valean (cvalean) wrote :

Hi Joe,

I did verify this again with the below kernels and results:
- 4.8.0-22 16.10 kernel - kdump through NMI on 4 CPU cores doesn't work - VM gets stuck and there is no crash file nor a reboot.
- 4.9.0-040900RC8 kernel from ubuntu mainline - kdump through NMI works fine when using single core or SMP *with 4 cores*.
Using 8 cores on this kernel, triggering the crash will result in the same bad behavior as from the GA kernel. I don't see any crash messages on the console, and the VM will just hang. Will have to do more debugging on this new pattern.

All tests have been done with crashkernel=512M and 2GB RAM for the VM.

4.9 also just got released, as of 11/12.