Marcelo Tosatti wrote:
It is possible for a shadow page to have a parent link
pointing to a freed page. When zapping a high level table,
kvm_mmu_page_unlink_children fails to remove the parent_pte link.
For that to happen, the child must be unreachable via the shadow
tree, which can happen in shadow_walk_entry if the guest pte was
modified in between walk() and fetch(). Remove the parent pte
reference in such case.
Possible cause for oops in bug #2217430.
I'll apply this to the code that I'm testing, but with my change to
2.6.27, kvm-79 and Avi's patch from bug #2217430, I haven't seen the
problem again. I still have been testing with oos_shadow=0, which I'll
get rid of now.
Thanks
-John
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at http://vger.kernel.org/majordomo-info.html
