The struct read_format, which denotes the returned values on a read states that the values are u64 and not long long which is used for struct unpacking.
Therefore the 'q' long long formatter was exchanged with 'Q' which is the format for u64 data. --- scripts/kvm/kvm_stat | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index ab10b1a..ee4cf31 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -339,7 +339,7 @@ class Group(object): def read(self): length = 8 * (1 + len(self.events)) - read_format = 'xxxxxxxx' + 'q' * len(self.events) + read_format = 'xxxxxxxx' + 'Q' * len(self.events) return dict(zip([event.name for event in self.events], struct.unpack(read_format, os.read(self.events[0].fd, length)))) -- 2.3.0