linux-kernel - Re: [linux-next:master] [perf target] 5ddf4c3a17: perf-sanity-tests.perf_record

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Message-ID: <CAP-5=fU6hxJp7NhnQ4zDv6xdSfue9xyRhznp62=OxKLjok8UAA@mail.gmail.com>
Date: Wed, 25 Jun 2025 07:59:16 -0700
From: Ian Rogers <irogers@...gle.com>
To: kernel test robot <oliver.sang@...el.com>
Cc: oe-lkp@...ts.linux.dev, lkp@...el.com, Namhyung Kim <namhyung@...nel.org>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [linux-next:master] [perf target] 5ddf4c3a17: perf-sanity-tests.perf_record_tests.fail

On Wed, Jun 25, 2025 at 12:10 AM kernel test robot
<oliver.sang@...el.com> wrote:
>
>
>
> Hello,
>
> kernel test robot noticed "perf-sanity-tests.perf_record_tests.fail" on:
>
> commit: 5ddf4c3a17dc499fcbaf35692bc894340062dee8 ("perf target: Separate parse_uid into its own function")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
> [test failed on linux-next/master f817b6dd2b62d921a6cdc0a3ac599cd1851f343c]
>
> in testcase: perf-sanity-tests
> version:
> with following parameters:
>
>         perf_compiler: clang
>         group: group-02
>
>
> config: x86_64-rhel-9.4-bpf
> compiler: gcc-12
> test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G 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/202506251422.589f230a-lkp@intel.com
>
>
> 2025-06-22 14:23:54 sudo /usr/src/linux-perf-x86_64-rhel-9.4-bpf-5ddf4c3a17dc499fcbaf35692bc894340062dee8/tools/perf/perf test 126 -v
> 126: perf record tests                                               : Running (1 active)
> --- start ---
> test child forked, pid 8698
>  13bca6c-13bcaa5 g test_loop
> perf does have symbol 'test_loop'
> Basic --per-thread mode test
> Per-thread record [Skipped event not supported]
> Register capture test
> Register capture test [Failed missing output]

Register capturing is different functionality to UID filtering.

> Basic --system-wide mode test
> System-wide record [Skipped not supported]
> Basic target workload test
> Workload record [Failed record]

Something seems off, possibly something to do with permissions here.

> Branch counter test
> branch counter feature not supported on all core PMUs (/sys/bus/event_source/devices/cpu) [Skipped]
> Cgroup sampling test
> Cgroup sampling [Skipped not supported]
> Basic leader sampling test
> Leader sampling [Failed record]

And here.

I suspect this was a test machine issue although later patches do add
UID filtering tests to this test. I don't see anything actionable
here.

Thanks,
Ian

> Topdown leader sampling test
> Topdown leader sampling [Skipped event parsing failed]
> precise_max attribute test
> precise_max attribute [Skipped no cycles:P event]
> precise_max attribute [Skipped no instructions:P event]
> precise_max attribute [Skipped no hardware events]
> ---- end(-1) ----
> 126: perf record tests                                               : FAILED!
>
>
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20250625/202506251422.589f230a-lkp@intel.com
>
>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
>