Re: [PATCH v3 2/2] perf test: Add sched latency and script shell tests

[kernel test robot <oliver.sang@intel.com>]

Hello,

kernel test robot noticed "kmsg.sanitizer.direct_leak/__interceptor_realloc" on:

commit: 738c34064b92cfb47180911f409e393e78a96818 ("[PATCH v3 2/2] perf test: Add sched latency and script shell tests")
url: https://github.com/intel-lab-lkp/linux/commits/Ian-Rogers/perf-test-Add-sched-latency-and-script-shell-tests/20250628-092510
base: https://git.kernel.org/cgit/linux/kernel/git/perf/perf-tools-next.git perf-tools-next
patch link: https://lore.kernel.org/all/20250628012302.1242532-2-irogers@google.com/
patch subject: [PATCH v3 2/2] perf test: Add sched latency and script shell tests

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

	perf_compiler: clang
	group: group-01



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@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202507201046.5842fe9a-lkp@intel.com



2025-07-10 21:48:29 sudo /usr/src/linux-perf-x86_64-rhel-9.4-bpf-738c34064b92cfb47180911f409e393e78a96818/tools/perf/perf test 91 -v
 91: perf sched tests                                                : Running (1 active)
--- start ---
test child forked, pid 10659
Sched latency
pid 10663's current affinity list: 0-7
pid 10663's new affinity list: 0
pid 10665's current affinity list: 0-7
pid 10665's new affinity list: 0
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.335 MB /tmp/__perf_test_sched.perf.data.1IqjN (1973 samples) ]

=================================================================
==10672==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 67 byte(s) in 1 object(s) allocated from:
    #0 0x7fdf4ada98d5 in __interceptor_realloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:85
    #1 0x7fdf4a2723e1  (/lib/x86_64-linux-gnu/libc.so.6+0x7e3e1)
    #2 0x4f63ab0b0c0befff  (<unknown module>)

SUMMARY: AddressSanitizer: 67 byte(s) leaked in 1 allocation(s).
Unexpected signal in test_sched_latency
---- end(-1) ----
 91: perf sched tests                                                : FAILED!



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250720/202507201046.5842fe9a-lkp@intel.com



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https://github.com/intel/lkp-tests/wiki