Subject: Re: [PATCH 18/19] perf: Introduce positive capability for raw events

From: kernel test robot <[email-masked]>
Date: Thu, 21 Aug 2025 10:53:21 +0800

Hello,

kernel test robot noticed "perf-sanity-tests.Event_groups.fail" on:

commit: a704f7a13544a408baee6fa78f0f24fa05bfa406 ("[PATCH 18/19] perf: Introduce positive capability for raw events")
url: https://github.com/intel-lab-lkp/linux/commits/Robin-Murphy/perf-arm-cmn-Fix-event-validation/20250814-010626
base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 91325f31afc1026de28665cf1a7b6e157fa4d39d
patch link: https://lore.kernel.org/all/5427[email-masked]/
patch subject: [PATCH 18/19] perf: Introduce positive capability for raw events

in testcase: perf-sanity-tests
version: 
with following parameters:

	perf_compiler: gcc
	group: group-01

config: x86_64-rhel-9.4-bpf
compiler: gcc-12
test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G 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 <[email-masked]>
| Closes: https://lore.kernel.org/oe-lkp/[email-masked]

besides Event_groups, we also noticed perf_stat_JSON_output_linter and
perf_stat_STD_output_linter become failed upon this commit but pass on parent.

0129bbf0ee6f109a a704f7a13544a408baee6fa78f0
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :38          16%           6:6     perf-sanity-tests.Event_groups.fail
           :38          16%           6:6     perf-sanity-tests.perf_stat_JSON_output_linter.fail
           :38          16%           6:6     perf-sanity-tests.perf_stat_STD_output_linter.fail

2025-08-18 13:20:21 sudo /usr/src/linux-perf-x86_64-rhel-9.4-bpf-a704f7a13544a408baee6fa78f0f24fa05bfa406/tools/perf/perf test 66 -v
 66: Event groups                                                    : Running (1 active)
--- start ---
test child forked, pid 9619
Using CPUID GenuineIntel-6-55-B
Using uncore_imc_0 for uncore pmu event
0x0 0x0, 0x0 0x0, 0x0 0x1: Fail
0x0 0x0, 0x0 0x0, 0x1 0x3: Fail
0x0 0x0, 0x0 0x0, 0xf 0x1: Fail
0x0 0x0, 0x1 0x3, 0x0 0x0: Fail
0x0 0x0, 0x1 0x3, 0x1 0x3: Fail
0x0 0x0, 0x1 0x3, 0xf 0x1: Fail
0x0 0x0, 0xf 0x1, 0x0 0x0: Fail
0x0 0x0, 0xf 0x1, 0x1 0x3: Fail
0x0 0x0, 0xf 0x1, 0xf 0x1: Fail
0x1 0x3, 0x0 0x0, 0x0 0x0: Fail
0x1 0x3, 0x0 0x0, 0x1 0x3: Fail
0x1 0x3, 0x0 0x0, 0xf 0x1: Pass
0x1 0x3, 0x1 0x3, 0x0 0x0: Fail
0x1 0x3, 0x1 0x3, 0x1 0x3: Pass
0x1 0x3, 0x1 0x3, 0xf 0x1: Pass
0x1 0x3, 0xf 0x1, 0x0 0x0: Pass
0x1 0x3, 0xf 0x1, 0x1 0x3: Pass
0x1 0x3, 0xf 0x1, 0xf 0x1: Pass
0xf 0x1, 0x0 0x0, 0x0 0x0: Pass
0xf 0x1, 0x0 0x0, 0x1 0x3: Pass
0xf 0x1, 0x0 0x0, 0xf 0x1: Pass
0xf 0x1, 0x1 0x3, 0x0 0x0: Pass
0xf 0x1, 0x1 0x3, 0x1 0x3: Pass
0xf 0x1, 0x1 0x3, 0xf 0x1: Pass
0xf 0x1, 0xf 0x1, 0x0 0x0: Pass
0xf 0x1, 0xf 0x1, 0x1 0x3: Pass
0xf 0x1, 0xf 0x1, 0xf 0x1: Pass
---- end(-1) ----
 66: Event groups                                                    : FAILED!

...

2025-08-18 13:29:36 sudo /usr/src/linux-perf-x86_64-rhel-9.4-bpf-a704f7a13544a408baee6fa78f0f24fa05bfa406/tools/perf/perf test 97 -v
 97: perf stat JSON output linter                                    : Running (1 active)
--- start ---
test child forked, pid 20715
Checking json output: no args [Success]
Checking json output: system wide [Success]
Checking json output: interval [Success]
Checking json output: event [Success]
Checking json output: per thread [Success]
Checking json output: per node [Success]
Checking json output: metric only Test failed for input:
{"metric-value" : "none"}

Traceback (most recent call last):
  File "/usr/src/perf_selftests-x86_64-rhel-9.4-bpf-a704f7a13544a408baee6fa78f0f24fa05bfa406/tools/perf/tests/shell/lib/perf_json_output_lint.py", line 108, in <module>
    check_json_output(expected_items)
  File "/usr/src/perf_selftests-x86_64-rhel-9.4-bpf-a704f7a13544a408baee6fa78f0f24fa05bfa406/tools/perf/tests/shell/lib/perf_json_output_lint.py", line 93, in check_json_output
    raise RuntimeError(f'Check failed for: key={key} value={value}')
RuntimeError: Check failed for: key=metric-value value=none
---- end(-1) ----
 97: perf stat JSON output linter                                    : FAILED!

...

2025-08-18 13:29:46 sudo /usr/src/linux-perf-x86_64-rhel-9.4-bpf-a704f7a13544a408baee6fa78f0f24fa05bfa406/tools/perf/perf test 99 -v
 99: perf stat STD output linter                                     : Running (1 active)
--- start ---
test child forked, pid 20818
Checking STD output: no args [Success]
Checking STD output: system wide [Success]
Checking STD output: interval [Success]
Checking STD output: per thread [Success]
Checking STD output: per node [Success]
Checking STD output: metric only ---- end(-1) ----
 99: perf stat STD output linter                                     : FAILED!

The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250821/[email-masked]

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