Messages in this thread | | | Date | Thu, 14 Nov 2013 12:20:35 -0500 (EST) | From | Vince Weaver <> | Subject | Re: perf/tracepoint: another fuzzer generated lockup |
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possibly not an issue with your patch, but found in nearby code:
in perf_trace_init:
int event_id = p_event->attr.config;
...
if (tp_event->event.type == event_id &&
note that "attr.config" is 64-bit but "event_id" is only 32-bit, so things like 0xffffffff00000018 will map to irq_work_exit.
I'm not sure if your PERM code properly handles this case, I don't have time to work through the macro-magic in your patch.
Vince
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