Re: [PATCH 4/4] perf: support zstd-compressed kernel modules

[kernel test robot]

Hello,

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

commit: de7d5e445f2f9dfc4186dc2bd86287d27c9e00bd ("[PATCH 4/4] perf: support zstd-compressed kernel modules")
url: https://github.com/intel-lab-lkp/linux/commits/Ivan-Shapovalov/perf-zstd-zstd_decompress_stream-zstd_decompress_buffer/20261014-203407
patch link: https://lore.kernel.org/all/20261014-perf-zstd-v1-4-9652727886fa@xxxxxxxxxxxx/
patch subject: [PATCH 4/4] perf: support zstd-compressed kernel modules

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

	perf_compiler: gcc
	group: group-01


config: x86_64-rhel-9.4-bpf
compiler: gcc-14
test machine: 16 threads 1 sockets Intel(R) Xeon(R) E-2278G CPU @ 3.40GHz (Coffee Lake-E) 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 <yi1.lai@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202610271022.fab706ea-lkp@xxxxxxxxx


2026-10-25 22:43:28 sudo ASAN_OPTIONS=fast_unwind_on_malloc=0 /usr/src/linux-perf-x86_64-rhel-9.4-bpf-de7d5e445f2f9dfc4186dc2bd86287d27c9e00bd/tools/perf/perf test 34 -v
 34: kmod_path__parse                                                                                          : Running (1 active)
---- start ----
...
FAILED tests/kmod-path.c:23 wrong kmod
FAILED tests/kmod-path.c:63 failed
---- end(-1) ----
...
==11697==ERROR: LeakSanitizer: detected memory leaks

...
    #17 0x7f7a0d1b9d64 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d64) (BuildId: 5e5b51f4c39af9ac589408c1dc432ba390a273cc)
    #18 0x5569eccabb90 in _start (/usr/src/perf_selftests-x86_64-rhel-9.4-bpf-de7d5e445f2f9dfc4186dc2bd86287d27c9e00bd/tools/perf/perf+0x11edb90) (BuildId: c1567a8473607a54274bd80d073619ea9cdc5d77)

SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s).
 34: kmod_path__parse                                                                                          : FAILED!


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261027/202610271022.fab706ea-lkp@xxxxxxxxx


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