The string stored in some of the fields of tracepoint handlers has unused non-ascii characters beyond the first null ternimating character. As a result the call to is_printable_array fails and the python handlers receive the entire field as a byte array instead of just the subset of chars that represent the string.
This change calls is_printable_array with the correct length of the string instead of the entire field size. Bug report: lkml/2017/7/18/228 Arun Kalyanasundaram (1): perf script python: Garbled text in tracepoint fields tools/perf/util/scripting-engines/trace-event-python.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) -- 2.14.0.434.g98096fd7a8-goog
