KVM: x86/vPMU: fix undefined shift in intel_pmu_refresh()

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commit 34b0dadbdf upstream.

Static analysis noticed that pmu->nr_arch_gp_counters can be 32
(INTEL_PMC_MAX_GENERIC) and therefore cannot be used to shift 'int'.

I didn't add BUILD_BUG_ON for it as we have a better checker.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: 25462f7f52 ("KVM: x86/vPMU: Define kvm_pmu_ops to support vPMU function dispatch")
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Radim Krčmář 2017-05-18 19:37:31 +02:00 • committed by Greg Kroah-Hartman

parent 1eeb794263

commit f3c3ec96e5

1 changed files with 1 additions and 1 deletions

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arch/x86/kvm/pmu_intel.c

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