linux-kernel - Re: [PATCH 5/7] perf test: test_intel

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Date:   Fri, 14 Oct 2022 14:33:39 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 5/7] perf test: test_intel_pt.sh: Add jitdump test

Em Fri, Oct 14, 2022 at 02:32:19PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Fri, Oct 14, 2022 at 02:28:58PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Miscellaneous Intel PT testing: Ok
 
> Actually:
 
> --- Test tracing self-modifying code that uses jitdump ---
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 0.018 MB /tmp/perf-test-intel-pt-sh.GJoKOxGVFY/tmp-perf.data ]
> 
> Warning:
> 1 instruction trace errors
> /home/acme/git/perf
> Decode failed, 1 errors
> Warning:
> 1 instruction trace errors
>  instruction trace error type 1 time 494778.777081924 cpu 3 pid 309650 tid 309650 ip 0x7f0972f22009 code 5: Failed to get instruction
> --- Cleaning up ---
> --- Done ---
> test child finished with -1
> ---- end ----
> Miscellaneous Intel PT testing: FAILED!
> [root@...co perf]#
> [root@...co perf]# pwd
> /home/acme/git/perf

I see... nevermind, this is what is expected, failing now, then the fix,
then stops failing, nothing to see here, move along 8-)

- Arnaldo