On Mon, Aug 31, 2015 at 04:20:03PM -0300, Arnaldo Carvalho de Melo wrote: > Em Sat, Aug 29, 2015 at 04:21:36AM +0000, Wang Nan escreveu: > > If parse_events__scanner() collects no entry, perf_evlist__last(evlist) > > is invalid. Then setting of cmdline_group_boundary touches invalid. > > > > It could happend in currect BPF implementation. See [1]. Although it > > can be fixed, for safety reason it whould be better to introduce this > > check. > > > > Instead of checking number of entries, check data.list instead, so we > > can add dummy evsel here. > > Event parsing fixes should have Jiri Olsa on the CC list, Jiri, is this > ok? > > From what I can see it looks Ok, my question, just from looking at this > patch, is if it is valid to get to this point with an empty data.list, > i.e. was it ever possible and this is a bug irrespective of eBPF?
good point, I believe it's either fail or event(s) added to the list I haven't checked how's eBPF connected with event parsing, is there a git tree I could check? thanks, jirka -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/