Re: [perf-tools-next:tmp.perf-tools-next] [perf dlfilter] f178a76b05: perf-sanity-tests.dlfilter_C_API.fail

[Adrian Hunter]

On 23/08/23 17:57, kernel test robot wrote:
> 
> 
> Hello,
> 
> 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@xxxxxxxxx>
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@xxxxxxxxxx>
    Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
    Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
    Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230731091857.10681-1-adrian.hunter@xxxxxxxxx
    Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

The fix is:

42c6dd9d23019ff339d0aca80a444eb71087050e perf dlfilter: Initialize addr_location before passing it to thread__find_symbol_fb()
> 
> 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@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-lkp/202308232146.94d82cb4-oliver.sang@xxxxxxxxx
> 
> 
> 
>  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@xxxxxxxxx
> 
> 
>