From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 19 Oct 2011 06:15:10 +0000 (+0300)
Subject: KVM: make checks stricter in coalesced_mmio_in_range()
X-Git-Tag: v3.3-rc1~131^2~59
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1a214246cbb431f7430f7d0c0fb66218a6f442d2;p=pandora-kernel.git

KVM: make checks stricter in coalesced_mmio_in_range()

My testing version of Smatch complains that addr and len come from
the user and they can wrap.  The path is:
  -> kvm_vm_ioctl()
     -> kvm_vm_ioctl_unregister_coalesced_mmio()
        -> coalesced_mmio_in_range()

I don't know what the implications are of wrapping here, but we may
as well fix it, if only to silence the warning.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---

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