From: Rusty Russell <rusty@rustcorp.com.au>
Date: Thu, 5 Sep 2013 08:15:39 +0000 (+0930)
Subject: lguest: fix BUG_ON() in invalid guest page table.
X-Git-Tag: v3.12-rc1~85^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4623c28e222d82f87537ef66db61ebcfbd8306db;p=pandora-kernel.git

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>
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