linux-kernel - Re: [perf-tools-next:tmp.perf-tools-next] [perf dlfilter] f178a76b05: perf-sanity-tests.dlfilter_C

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Date:   Wed, 23 Aug 2023 13:55:51 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     kernel test robot <oliver.sang@...el.com>, oe-lkp@...ts.linux.dev,
        lkp@...el.com, Arnaldo Carvalho de Melo <acme@...hat.com>,
        Ian Rogers <irogers@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [perf-tools-next:tmp.perf-tools-next] [perf dlfilter]
 f178a76b05: perf-sanity-tests.dlfilter_C_API.fail

Em Wed, Aug 23, 2023 at 06:37:49PM +0300, Adrian Hunter escreveu:
> On 23/08/23 17:57, kernel test robot wrote:
> > kernel test robot noticed "perf-sanity-tests.dlfilter_C_API.fail" on:

> > commit: f178a76b054fd046d212c3c67745146ff191a443 ("perf dlfilter: Add a test for resolve_address()")
> > https://git.kernel.org/cgit/linux/kernel/git/perf/perf-tools-next.git tmp.perf-tools-next

> > [test failed on linux-next/master 28c736b0e92e11bfe2b9997688213dc43cb22182]
 
> We sometimes make a test for an issue then fix it, so the new test fails,
> but is fixed in a subsequent patch.  If you read the commit it says as much:
 
> commit f178a76b054fd046d212c3c67745146ff191a443
> Author: Adrian Hunter <adrian.hunter@...el.com>
> Date:   Mon Jul 31 12:18:55 2023 +0300
> 
>     perf dlfilter: Add a test for resolve_address()
>     
>     Extend the "dlfilter C API" test to test
>     perf_dlfilter_fns.resolve_address(). The test currently fails, but passes
>     after a subsequent patch.
>     
>     Reviewed-by: Ian Rogers <irogers@...gle.com>
>     Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
>     Cc: Jiri Olsa <jolsa@...nel.org>
>     Cc: Namhyung Kim <namhyung@...nel.org>
>     Link: https://lore.kernel.org/r/20230731091857.10681-1-adrian.hunter@intel.com
>     Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
 
> The fix is:
 
> 42c6dd9d23019ff339d0aca80a444eb71087050e perf dlfilter: Initialize addr_location before passing it to thread__find_symbol_fb()

I wonder if we can automate this aspect of testing, by adding some
markup that states that this _is supposed_ to fail, and if it doesn't,
then we get a notification. It should probably also means that the next
cset will make the test pass, ideas?

- Arnaldo

> > 
> > in testcase: perf-sanity-tests
> > version: perf-x86_64-00c7b5f4ddc5-1_20230402
> > with following parameters:
> > 
> > 	perf_compiler: gcc
> > 
> > 
> > 
> > compiler: gcc-12
> > test machine: 224 threads 2 sockets Intel(R) Xeon(R) Platinum 8480+ (Sapphire Rapids) with 256G memory
> > 
> > (please refer to attached dmesg/kmsg for entire log/backtrace)
> > 
> > 
> > 
> > 
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <oliver.sang@...el.com>
> > | Closes: https://lore.kernel.org/oe-lkp/202308232146.94d82cb4-oliver.sang@intel.com
> > 
> > 
> > 
> >  66: Convert perf time to TSC                                        :
> >  66.1: TSC support                                                   : Ok
> >  66.2: Perf time to TSC                                              : Ok
> >  67: dlfilter C API                                                  : FAILED!  <---
> >  68: Sigtrap                                                         : Ok
> > 
> > 
> > 
> > The kernel config and materials to reproduce are available at:
> > https://download.01.org/0day-ci/archive/20230823/202308232146.94d82cb4-oliver.sang@intel.com
> > 
> > 
> > 
> 

-- 

- Arnaldo