tree 7a117043008ff4bd15b5cf8b7baf7e074c1dccba
parent 3b868a4073cdedf395f26d843874414e0e0e9cfd
author Rusty Russell <rusty@rustcorp.com.au> 1378368939 +0930
committer Rusty Russell <rusty@rustcorp.com.au> 1378420766 +0930

lguest: fix BUG_ON() in invalid guest page table.

If we discover the entry is invalid, we kill the guest, but we must
avoid calling gpte_addr() on the invalid pmd, otherwise:

	kernel BUG at drivers/lguest/page_tables.c:157!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>