From: Jan Kiszka <jan.kiszka@siemens.com>
Date: Fri, 23 Oct 2009 07:37:00 +0000 (+0200)
Subject: KVM: x86: Catch potential overrun in MCE setup
X-Git-Tag: v2.6.32-rc7~66^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9e38c3e01ad242fe2a625354cf065c34b01e3aa;p=pandora-kernel.git

KVM: x86: Catch potential overrun in MCE setup

We only allocate memory for 32 MCE banks (KVM_MAX_MCE_BANKS) but we
allow user space to fill up to 255 on setup (mcg_cap & 0xff), corrupting
kernel memory. Catch these overflows.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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