From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43B6D37BE9B; Fri, 27 Feb 2026 21:39:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772228383; cv=none; b=dvWxvY8UI1F/8xzunY4Gg+bwJ7/BRRMQ/g/C6Yr6qOny6fFzNuubCiflVOFbj3nKIwcVJOGisnQvhVWkFJUmOW85RtJJdyUqaBDHSSZ9WJqzOJcBajlp1aWwLXrr37Rq3pnIqU5xApbkyKrM0BgRRZ2Ont5PxX6K6tpsoEioL28= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772228383; c=relaxed/simple; bh=9SrQGZCUU/3F0tQgi9lXJNHAP5eSd25+0g/Y3JjUFLw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MweRxqxZf2GXdfUVJ1ykxzWLw2DSPNuxJ7Kb+4atZRicnSJMdipIJpukblUY0eMUqvhCsEOIqqJjAelTvGIjErKxBzY5MHQj0GMwkpecpWIcnWBH3tHJ9WxYAM3KOMmzALld24dq2R15AtKPAXorxHdmT872kyYLiM9gIKA6VZo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gXH3CBz/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="gXH3CBz/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86CB3C116C6; Fri, 27 Feb 2026 21:39:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772228382; bh=9SrQGZCUU/3F0tQgi9lXJNHAP5eSd25+0g/Y3JjUFLw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=gXH3CBz/i+yCxUNH0E5UVPeTT6OLFemN1/gj9dOHylfk6ikU16pAPapgcz9ryEUxw +NjxW2Ww52Djyy9UWVEx9l8SRuH8+2glbNA8nqixQ8RiMldyPoziNN3jgXYmsZx66e xlbi7YKnSUvHEFyfU0uzLah1Kb2t+XKns56USGJaC47u2IwQ/BwuqPNr4VXycaH7rc xs9UFueSxCstZmg4D8oIzbNuyjbaq6zb0VZ8oNq6xACwVYu0ZYrk+hsDvXxgbUC1XJ gxf6ruB8LVJwQdEs/KZuWg0sqF5fGdEjXNIIDbYllLOp/7KQF857YVy1duN2NUu+jE dy+Pc8+6HcHuA== Date: Fri, 27 Feb 2026 13:39:40 -0800 From: Namhyung Kim To: Ian Rogers Cc: kernel test robot , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Pablo Galindo , linux-perf-users@vger.kernel.org Subject: Re: [linus:master] [perf test] c9cd0c7e52: perf-sanity-tests.python_profiling_with_jitdump.fail Message-ID: References: <202602270932.50ed0a9f-lkp@intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <202602270932.50ed0a9f-lkp@intel.com> On Fri, Feb 27, 2026 at 04:42:59PM +0800, kernel test robot wrote: > > > Hello, > > > we failed to run this new added test. not sure if we miss any dependencies? > > > below is full report FYI. > > > kernel test robot noticed "perf-sanity-tests.python_profiling_with_jitdump.fail" on: > > commit: c9cd0c7e529e80e9be79867d2ebb874f67dbc35e ("perf test: Add python JIT dump test") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > in testcase: perf-sanity-tests > version: > with following parameters: > > perf_compiler: clang > group: group-02 > > > config: x86_64-rhel-9.4-bpf > compiler: gcc-14 > test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor 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 > | Closes: https://lore.kernel.org/oe-lkp/202602270932.50ed0a9f-lkp@intel.com Looks like a reference leak to map during libdw unwinding. Ian, can you please take a look? Thanks, Namhyung > > > 2026-01-26 15:25:04 sudo ASAN_OPTIONS=fast_unwind_on_malloc=0 /usr/src/linux-perf-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf test 84 -v > 84: python profiling with jitdump : Running (1 active) > --- start --- > test child forked, pid 12390 > Run python with -Xperf_jit > [ perf record: Woken up 5 times to write data ] > ================================================================= > ==12400==ERROR: AddressSanitizer: heap-use-after-free on address 0x50200002ba30 at pc 0x55c306993987 bp 0x7ffd98998720 sp 0x7ffd98998718 > READ of size 8 at 0x50200002ba30 thread T0 > #0 0x55c306993986 in map__start util/map.h:54 > #1 0x55c306993cd0 in map__dso_map_ip util/map.h:110 > #2 0x55c3069b1ecb in unwind_entry util/machine.c:2950 > #3 0x55c306e4197b in unwind__get_entries util/unwind-libdw.c:321 > #4 0x55c3069b2398 in thread__resolve_callchain_unwind util/machine.c:2976 > #5 0x55c3069b24ec in __thread__resolve_callchain util/machine.c:3003 > #6 0x55c306987e78 in sample__for_each_callchain_node util/callchain.c:1808 > #7 0x55c3067d4ece in build_id__mark_dso_hit util/build-id.c:77 > #8 0x55c3062f7004 in process_sample_event /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:1504 > #9 0x55c3069dbec3 in evlist__deliver_sample util/session.c:1259 > #10 0x55c3069dc425 in machines__deliver_event util/session.c:1299 > #11 0x55c3069de009 in perf_session__deliver_event util/session.c:1386 > #12 0x55c3069cb296 in ordered_events__deliver_event util/session.c:134 > #13 0x55c306a06aac in do_flush util/ordered-events.c:245 > #14 0x55c306a07951 in __ordered_events__flush util/ordered-events.c:324 > #15 0x55c306a07e62 in ordered_events__flush util/ordered-events.c:342 > #16 0x55c3069d6863 in perf_event__process_finished_round util/session.c:786 > #17 0x55c3069deb7e in perf_session__process_user_event util/session.c:1446 > #18 0x55c3069e190e in perf_session__process_event util/session.c:1668 > #19 0x55c3069e9198 in process_simple util/session.c:2259 > #20 0x55c3069e8158 in reader__read_event util/session.c:2188 > #21 0x55c3069e8afe in reader__process_events util/session.c:2237 > #22 0x55c3069e9987 in __perf_session__process_events util/session.c:2282 > #23 0x55c3069eca43 in perf_session__process_events util/session.c:2446 > #24 0x55c3062f7328 in process_buildids /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:1534 > #25 0x55c3062fbdf0 in record__finish_output /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:1858 > #26 0x55c306309ebf in __cmd_record /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:2930 > #27 0x55c306317a8f in cmd_record /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:4417 > #28 0x55c30652bf7b in run_builtin /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf.c:349 > #29 0x55c30652c86c in handle_internal_command /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf.c:401 > #30 0x55c30652cdc2 in run_argv /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf.c:445 > #31 0x55c30652d569 in main /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf.c:553 > #32 0x7f026b873ca7 (/lib/x86_64-linux-gnu/libc.so.6+0x29ca7) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8) > #33 0x7f026b873d64 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d64) (BuildId: def5460e3cee00bfee25b429c97bcc4853e5b3a8) > #34 0x55c306293210 in _start (/usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/perf+0x1023210) (BuildId: 47c1eede4a6cf8e0c379d2104e8b035638daa1b4) > > 0x50200002ba30 is located 0 bytes inside of 8-byte region [0x50200002ba30,0x50200002ba38) > freed by thread T0 here: > #0 0x7f0275b3d8f8 in free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52 > #1 0x55c3069ba258 in map__put util/map.c:312 > #2 0x55c30679b7f8 in __map__zput util/map.h:198 > #3 0x55c30679c0df in addr_location__exit util/addr_location.c:31 > #4 0x55c306e3f7fe in entry util/unwind-libdw.c:147 > #5 0x55c306e40b1b in frame_callback util/unwind-libdw.c:259 > #6 0x7f02758daae2 in dwfl_thread_getframes (/lib/x86_64-linux-gnu/libdw.so.1+0x78ae2) (BuildId: bafe9cb5bbbe6cee778d0d137730ea5c223d553e) > #7 0x7f02758dae53 in dwfl_getthread_frames (/lib/x86_64-linux-gnu/libdw.so.1+0x78e53) (BuildId: bafe9cb5bbbe6cee778d0d137730ea5c223d553e) > #8 0x55c306e414af in unwind__get_entries util/unwind-libdw.c:307 > #9 0x55c3069b2398 in thread__resolve_callchain_unwind util/machine.c:2976 > #10 0x55c3069b24ec in __thread__resolve_callchain util/machine.c:3003 > #11 0x55c306987e78 in sample__for_each_callchain_node util/callchain.c:1808 > #12 0x55c3067d4ece in build_id__mark_dso_hit util/build-id.c:77 > #13 0x55c3062f7004 in process_sample_event /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:1504 > #14 0x55c3069dbec3 in evlist__deliver_sample util/session.c:1259 > #15 0x55c3069dc425 in machines__deliver_event util/session.c:1299 > #16 0x55c3069de009 in perf_session__deliver_event util/session.c:1386 > #17 0x55c3069cb296 in ordered_events__deliver_event util/session.c:134 > #18 0x55c306a06aac in do_flush util/ordered-events.c:245 > #19 0x55c306a07951 in __ordered_events__flush util/ordered-events.c:324 > #20 0x55c306a07e62 in ordered_events__flush util/ordered-events.c:342 > #21 0x55c3069d6863 in perf_event__process_finished_round util/session.c:786 > #22 0x55c3069deb7e in perf_session__process_user_event util/session.c:1446 > #23 0x55c3069e190e in perf_session__process_event util/session.c:1668 > #24 0x55c3069e9198 in process_simple util/session.c:2259 > #25 0x55c3069e8158 in reader__read_event util/session.c:2188 > #26 0x55c3069e8afe in reader__process_events util/session.c:2237 > #27 0x55c3069e9987 in __perf_session__process_events util/session.c:2282 > > previously allocated by thread T0 here: > #0 0x7f0275b3ec57 in malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69 > #1 0x55c3069bd747 in map__get util/map.h:188 > #2 0x55c3069c72c4 in maps__find util/maps.c:1112 > #3 0x55c30683b979 in thread__find_map util/event.c:687 > #4 0x55c30683be37 in thread__find_symbol util/event.c:723 > #5 0x55c306e3e7c3 in __report_module util/unwind-libdw.c:54 > #6 0x55c306e3f428 in entry util/unwind-libdw.c:133 > #7 0x55c306e40b1b in frame_callback util/unwind-libdw.c:259 > #8 0x7f02758daae2 in dwfl_thread_getframes (/lib/x86_64-linux-gnu/libdw.so.1+0x78ae2) (BuildId: bafe9cb5bbbe6cee778d0d137730ea5c223d553e) > #9 0x7f02758dae53 in dwfl_getthread_frames (/lib/x86_64-linux-gnu/libdw.so.1+0x78e53) (BuildId: bafe9cb5bbbe6cee778d0d137730ea5c223d553e) > #10 0x55c306e414af in unwind__get_entries util/unwind-libdw.c:307 > #11 0x55c3069b2398 in thread__resolve_callchain_unwind util/machine.c:2976 > #12 0x55c3069b24ec in __thread__resolve_callchain util/machine.c:3003 > #13 0x55c306987e78 in sample__for_each_callchain_node util/callchain.c:1808 > #14 0x55c3067d4ece in build_id__mark_dso_hit util/build-id.c:77 > #15 0x55c3062f7004 in process_sample_event /usr/src/perf_selftests-x86_64-rhel-9.4-bpf-c9cd0c7e529e80e9be79867d2ebb874f67dbc35e/tools/perf/builtin-record.c:1504 > #16 0x55c3069dbec3 in evlist__deliver_sample util/session.c:1259 > #17 0x55c3069dc425 in machines__deliver_event util/session.c:1299 > #18 0x55c3069de009 in perf_session__deliver_event util/session.c:1386 > #19 0x55c3069cb296 in ordered_events__deliver_event util/session.c:134 > #20 0x55c306a06aac in do_flush util/ordered-events.c:245 > #21 0x55c306a07951 in __ordered_events__flush util/ordered-events.c:324 > #22 0x55c306a07e62 in ordered_events__flush util/ordered-events.c:342 > #23 0x55c3069d6863 in perf_event__process_finished_round util/session.c:786 > #24 0x55c3069deb7e in perf_session__process_user_event util/session.c:1446 > #25 0x55c3069e190e in perf_session__process_event util/session.c:1668 > #26 0x55c3069e9198 in process_simple util/session.c:2259 > #27 0x55c3069e8158 in reader__read_event util/session.c:2188 > > SUMMARY: AddressSanitizer: heap-use-after-free util/map.h:54 in map__start > Shadow bytes around the buggy address: > 0x50200002b780: fa fa fd fa fa fa fd fd fa fa 00 06 fa fa 00 fa > 0x50200002b800: fa fa 00 fa fa fa fd fa fa fa 00 fa fa fa 00 fa > 0x50200002b880: fa fa 00 fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002b900: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002b980: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > =>0x50200002ba00: fa fa fd fa fa fa[fd]fa fa fa fd fa fa fa fd fa > 0x50200002ba80: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002bb00: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002bb80: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002bc00: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa > 0x50200002bc80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa > Shadow byte legend (one shadow byte represents 8 application bytes): > Addressable: 00 > Partially addressable: 01 02 03 04 05 06 07 > Heap left redzone: fa > Freed heap region: fd > Stack left redzone: f1 > Stack mid redzone: f2 > Stack right redzone: f3 > Stack after return: f5 > Stack use after scope: f8 > Global redzone: f9 > Global init order: f6 > Poisoned by user: f7 > Container overflow: fc > Array cookie: ac > Intra object redzone: bb > ASan internal: fe > Left alloca redzone: ca > Right alloca redzone: cb > ==12400==ABORTING > Error: > failed to process sample > Generate JIT-ed DSOs using perf inject > WARNING: The /tmp/__perf_test.perf.data.W1jHYt file's data size field is 0 which is unexpected. > Was the 'perf record' command properly terminated? > Add JIT-ed DSOs to the build-ID cache > Couldn't add /tmp/jitted--*.so: No such file or directory > Check the symbol containing the function/module name > zero-sized data (/tmp/__perf_test.perf.data.W1jHYt.jit), nothing to do! > Found 0 matching lines > Remove JIT-ed DSOs from the build-ID cache > Cleaning up files... > ---- end(-1) ---- > 84: python profiling with jitdump : FAILED! > > > > The kernel config and materials to reproduce are available at: > https://download.01.org/0day-ci/archive/20260227/202602270932.50ed0a9f-lkp@intel.com > > > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki >