amd iommu is deployed on that machine, and its support for kdump has not beed provided.
Hi Emma, when you add amd_iommu=off into cmdline of 1st kernel, does it work well?
And, with nr_cpus=1, it works?
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.