tree 4ea957d97f8d7399f1f58cfce2470f703f6d1a58
parent 51bb296b09a83ee1aae025778db38f9d2cc7bb1a
author Jan Kiszka <jan.kiszka@siemens.com> 1256283420 +0200
committer Marcelo Tosatti <mtosatti@redhat.com> 1257345755 -0200

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>