Hi,
I forgot about the set of issues below. Michael had a suggested powerpc
fix for 3, but it it would be nice to fix the perf bugs in 1 and 2.
Anton
--
> Updating to mainline as of last night, I started seeing the following
> error when running the perf report TUI:
>
> 0x46068 [0x8]: failed to process type: 68
>
> This event is just PERF_RECORD_FINISHED_ROUND:
>
> 0x46068 [0x8]: event: 68
> .
> . ... raw event: size 8 bytes
> . 0000: 44 00 00 00 00 00 08 00
> D.......
>
> 0x46068 [0x8]: PERF_RECORD_FINISHED_ROUND
>
> Which of course is not our error. It took me a while to find the real
> culprit:
>
> 14c00-14c00 g exc_virt_0x4c00_system_call
>
> A zero length symbol, which __symbol__inc_addr_samples() barfs on:
>
> if (addr < sym->start || addr >= sym->end) {
> ...
> return -ERANGE;
>
> Seems like we have 3 bugs here:
>
> 1. Output the real source of the error instead of
> PERF_RECORD_FINISHED_ROUND
>
> 2. Don't exit the TUI if we find a sample on a zero length symbol
>
> 3. Why do we have zero length symbols in the first place? Does the
> recent ppc64 exception clean up have something to do with it?
>
> Anton
