Error: xc: error: panic: xc_dom_boot.c:159: xc_dom_boot_domU_map: failed to mmap domU pages 0x100+0x33 [mmap, errno=-6 (Unknown error:-6)]: Internal error

[Roger Pau Monné]

On Mon, Jul 22, 2019 at 11:54:35PM +0900, YAMAMOTO Shigeru wrote:
> 
> Hi, all,
> 
> I'm using Xen Dom0 on FreeBSD/amd64.
> When following error occurs, I can not create new Xen DomU and I need rebooting
> Xen Dom0 to recover from error.
> 
> # xl create jenkins-01.cfg
> Parsing config from jenkins-01.cfg
> xc: error: panic: xc_dom_boot.c:159: xc_dom_boot_domU_map: failed to mmap
> domU pages 0x100+0x33 [mmap, errno=-6 (Unknown error: -6)]: Internal error
> libxl: error: libxl_dom.c:760:libxl__build_dom: xc_dom_build_image failed:
> Invalid argument
> libxl: error: libxl_create.c:1286:domcreate_rebuild_done: Domain 9:cannot
> (re-)build domain: -3
> libxl: error: libxl_domain.c:1038:libxl__destroy_domid: Domain
> 9:Non-existant domain
> libxl: error: libxl_domain.c:993:domain_destroy_callback: Domain 9:Unable to
> destroy guest
> libxl: error: libxl_domain.c:920:domain_destroy_cb: Domain 9:Destruction of
> domain failed

Thanks for the report!

I've fixed this in upstream Xen quite recently, and haven't backported
the patch to FreeBSD yet. I've now created a differential revision at:

https://reviews.freebsd.org/D21028

With the fix. Feel free to apply it to your ports tree and rebuild
xen-kernel, this should give you a working system.

Roger.