Messages in this thread Patch in this message | | | From | Xiao Guangrong <> | Subject | [PATCH 1/9] KVM: MMU: fix use uninitialized value | Date | Fri, 21 Aug 2015 12:50:03 +0800 |
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GCC (gcc version 5.1.1 20150618 (Red Hat 5.1.1-4) (GCC)) complains of this warning:
arch/x86/kvm//mmu.c:3332:9: warning: ‘leaf’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (root >= leaf) { ^ arch/x86/kvm//mmu.c:3304:12: note: ‘leaf’ was declared here int root, leaf;
It's true as shadow_walk_init() may stop the loop
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> --- arch/x86/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 70c375f..a8a5b8d 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3301,7 +3301,7 @@ walk_shadow_page_get_mmio_spte(struct kvm_vcpu *vcpu, u64 addr, u64 *sptep) { struct kvm_shadow_walk_iterator iterator; u64 sptes[PT64_ROOT_LEVEL], spte = 0ull; - int root, leaf; + int root, leaf = PT64_ROOT_LEVEL; bool reserved = false; if (!VALID_PAGE(vcpu->arch.mmu.root_hpa)) -- 2.4.3
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