From: Mark McLoughlin <mar...@redhat.com> If we run out of cpuid entries for extended request types we should return -E2BIG, just like we do for the standard request types.
Signed-off-by: Mark McLoughlin <mar...@redhat.com> Signed-off-by: Avi Kivity <a...@redhat.com> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 5426081..b332981 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1465,6 +1465,10 @@ static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid, for (func = 0x80000001; func <= limit && nent < cpuid->nent; ++func) do_cpuid_ent(&cpuid_entries[nent], func, 0, &nent, cpuid->nent); + r = -E2BIG; + if (nent >= cpuid->nent) + goto out_free; + r = -EFAULT; if (copy_to_user(entries, cpuid_entries, nent * sizeof(struct kvm_cpuid_entry2))) -- To unsubscribe from this list: send the line "unsubscribe kvm-commits" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html