Unable to analyze xen guest coredump
by Zihan Yang
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
7 years, 2 months
- 1
- 0