Comment 7 for bug 1758206

Can you confirm the appropriate test kernel was booted with 'uname -a'? You should see the text 'lp1758206' in the kernel name.

Also, could there be more the the three patches required that were posted to the description:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=04b9c96eae72d862726f2f4bfcec2078240c33c5
("powerpc/crash: Remove the test for cpu_online in the IPI callback")

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4145f358644b970fcff293c09fdcc7939e8527d2
("powernv/kdump: Fix cases where the kdump kernel can get HMI's")

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=910961754572a2f4c83ad7e610d180
("powerpc/kdump: Fix powernv build break when KEXEC_CORE=n")