Description of problem:
QE found some error/panic on 2nd kernel, like bug:
I have talked with Dave Young, he said, "crashkernel=auto does not
support debug kernel because a lot of debug options been enabled."
I think we should announce this in our kexec-kdump-howto.txt file,
if anyone want to use kdump on debug kernel.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Now is 7.4, add 7.4.0 flag.
As discussed with Dave and Bao on IRC, the debug kernels cannot be reliably used as crash/kdump kernels when the crash kernel memory is setup using the 'crashkernel=auto' boot argument.
This is because the debug kernels might enable a number of features which might cause the memory used by the same to swell up, which cannot be reliably met by using 'crashkernel=auto' boot argument.
Will cook up a patch to mention this limitation in kexec-kdump-howto.txt file.
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.