My panic in amd64/pmap

Andriy Gapon avg at
Fri Jan 18 14:17:17 UTC 2013

on 17/01/2013 21:50 Larry Rosenman said the following:
> I've now seen this panic:
>  pmap_insert_pt_page: pindex already inserted
> on 9.1-RELEASE, 9.1-STABLE, and 10.0-CURRENT
> I've got vmcore's from the 9.1-STABLE and 10.0-CURRENT VM's available
> as well as sources.
> I have the core.txt.* files available at:
>  (10.0)
>  (9.1-S)
> I'm not sure what other debug info you need.
> I can provide SSH access to both VM's as well as the host.
> These are all in VirtualBox 4.2.6 VM's
> Any help would be appreciated.

Hmm, I wonder if VirtualBox is hitting the same popcnt bug that was fixed in qemu...

Could you please try a patch from here ?

It should be applied to src/recompiler/target-i386/translate.c, make sure that it
goes to a section marked as 'case 0x1b8: /* SSE4.2 popcnt */'.

Andriy Gapon

More information about the freebsd-amd64 mailing list