Unable to analyze xen guest coredump

[Zihan Yang <tgnyang@xxxxxxxxx>]

Hi all,

I start the domU with linux 4.12.13(bzImage) and xen 4.9.0, and I manually dump the guest memory with `sudo xl dump-core myvm dump-res`.

Then I try to analyze it in crash using sudo crash bzImage dump-res, but it tells me that

    crash: bzImage: not a supported file format

I have tried to add  `-f` option using `sudo crash -f bzImage dump-res`, but get the same error.

I then replace the bzImage with corresponding vmlinux, this time it gives me the following message

    WARNING: cannot read linux_banner string
    crash: src/linux-4.12.13/vmlinux and dump-res do not match!

How can I make them match? Xen does not support directly boot a uncompressed vmlinux file(in HVM mode) so I have keep using bzImage.

Thanks

Zihan

--
Crash-utility mailing list
Crash-utility@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/crash-utility