Hello Itsuro, Please use the current crash utility version for all future "xencrash" patches. As noted in the release announcement, version 4.0-3.13 contains an adaptation of your most recent patch. Please verify that the modifications that I made to your patch are to your satisfaction. I do note, using the vmcores I received today from Magnus Damm, which were created using his latest xen kernel kdump patch and kexec-tools patches, that running crash with the xen-syms file fails during initialization. I was going to look into why, but I will leave that up to you. In the meantime, I will work on getting crash to work with Magnus's new NT_XEN_KDUMP_CR3 ELF note format for analyzing dom0 vmlinux dumps. Thanks very much, Dave