Greeting, FYI, we noticed the following commit (built with gcc-11): commit: 63817398b945c74929af2b95dba4548a188c1671 ("perf record: Set PERF_FORMAT_LOST by default") https://git.kernel.org/cgit/linux/kernel/git/namhyung/linux-perf.git perf/report-lost-v1 in testcase: perf-sanity-tests version: with following parameters: perf_compiler: gcc on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): 2022-10-05 19:46:57 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 1 1: vmlinux symtab matches kallsyms : Ok 2022-10-05 19:46:58 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 2 2: Detect openat syscall event : Ok 2022-10-05 19:46:58 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 3 3: Detect openat syscall event on all cpus : Ok 2022-10-05 19:46:59 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 4 4: mmap interface tests : 4.1: Read samples using the mmap interface : Ok 4.2: User space counter reading of instructions : Ok 4.3: User space counter reading of cycles : Ok 2022-10-05 19:46:59 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 5 5: Test data source output : Ok 2022-10-05 19:46:59 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 6 6: Parse event definition strings : 6.1: Test event parsing : FAILED! 6.2: Test parsing of "hybrid" CPU events : Skip (not hybrid) 6.3: Parsing of all PMU events from sysfs : Ok 6.4: Parsing of given PMU events from sysfs : Ok 6.5: Parsing of aliased events from sysfs : Skip (no aliases in sysfs) 6.6: Parsing of aliased events : Ok 6.7: Parsing of terms (event modifiers) : Ok 2022-10-05 19:47:01 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 7 7: Simple expression parser : Ok 2022-10-05 19:47:01 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 8 8: PERF_RECORD_* events & perf_sample fields : Ok 2022-10-05 19:47:04 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 9 9: Parse perf pmu format : Ok 2022-10-05 19:47:04 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 10 10: PMU events : 10.1: PMU event table sanity : Ok 10.2: PMU event map aliases : Ok 10.3: Parsing of PMU event table metrics : Ok 10.4: Parsing of PMU event table metrics with fake PMUs : Ok 2022-10-05 19:47:13 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 11 11: DSO data read : Ok 2022-10-05 19:47:13 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 12 12: DSO data cache : Ok 2022-10-05 19:47:13 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 13 13: DSO data reopen : Ok 2022-10-05 19:47:13 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 14 14: Roundtrip evsel->name : Ok 2022-10-05 19:47:14 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 15 15: Parse sched tracepoints fields : Ok 2022-10-05 19:47:14 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 16 16: syscalls:sys_enter_openat event fields : Ok 2022-10-05 19:47:14 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 17 17: Setup struct perf_event_attr : FAILED! 2022-10-05 19:47:15 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 18 18: Match and link multiple hists : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 19 19: 'import perf' in python : FAILED! 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 20 20: Breakpoint overflow signal handler : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 21 21: Breakpoint overflow sampling : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 22 22: Breakpoint accounting : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 23 23: Watchpoint : 23.1: Read Only Watchpoint : Skip (missing hardware support) 23.2: Write Only Watchpoint : Ok 23.3: Read / Write Watchpoint : Ok 23.4: Modify Watchpoint : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 24 24: Number of exit events of a simple workload : Ok 2022-10-05 19:47:16 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 25 25: Software clock events period values : Ok 2022-10-05 19:47:17 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 26 26: Object code reading : Ok 2022-10-05 19:47:23 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 27 27: Sample parsing : Ok 2022-10-05 19:47:24 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 28 28: Use a dummy software event to keep tracking : Ok 2022-10-05 19:47:24 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 29 29: Parse with no sample_id_all bit set : Ok 2022-10-05 19:47:24 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 30 30: Filter hist entries : Ok 2022-10-05 19:47:24 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 31 31: Lookup mmap thread : Ok 2022-10-05 19:47:25 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 32 32: Share thread maps : Ok 2022-10-05 19:47:25 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 33 33: Sort output of hist entries : Ok 2022-10-05 19:47:25 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 34 34: Cumulate child hist entries : Ok 2022-10-05 19:47:25 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 35 35: Track with sched_switch : Ok 2022-10-05 19:47:26 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 36 36: Filter fds with revents mask in a fdarray : Ok 2022-10-05 19:47:26 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 37 37: Add fd to a fdarray, making it autogrow : Ok 2022-10-05 19:47:26 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 38 38: kmod_path__parse : Ok 2022-10-05 19:47:26 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 39 39: Thread map : Ok 2022-10-05 19:47:26 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 41 41: Session topology : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 43 43: Synthesize thread map : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 44 44: Remove thread map : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 45 45: Synthesize cpu map : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 46 46: Synthesize stat config : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 47 47: Synthesize stat : Ok 2022-10-05 19:47:27 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 48 48: Synthesize stat round : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 49 49: Synthesize attr update : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 50 50: Event times : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 51 51: Read backward ring buffer : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 52 52: Print cpu map : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 53 53: Merge cpu map : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 54 54: Probe SDT events : Ok 2022-10-05 19:47:28 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 55 55: is_printable_array : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 56 56: Print bitmap : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 57 57: perf hooks : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 59 59: unit_number__scnprintf : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 60 60: mem2node : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 61 61: time utils : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 62 62: Test jit_write_elf : Ok 2022-10-05 19:47:29 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 63 63: Test libpfm4 support : 63.1: test of individual --pfm-events : Skip (not compiled in) 63.2: test groups of --pfm-events : Skip (not compiled in) 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 64 64: Test api io : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 65 65: maps__merge_in : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 66 66: Demangle Java : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 67 67: Demangle OCaml : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 68 68: Parse and process metrics : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 69 69: PE file support : Ok 2022-10-05 19:47:30 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 70 70: Event expansion for cgroups : Ok 2022-10-05 19:47:31 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 71 71: Convert perf time to TSC : 71.1: TSC support : Ok 71.2: Perf time to TSC : Ok 2022-10-05 19:47:31 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 72 72: dlfilter C API : FAILED! 2022-10-05 19:47:32 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 73 73: Sigtrap : Ok 2022-10-05 19:47:32 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 74 74: Test dwarf unwind : Ok 2022-10-05 19:47:32 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 75 75: x86 instruction decoder - new instructions : Ok 2022-10-05 19:47:32 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 76 76: Intel PT packet decoder : Ok 2022-10-05 19:47:33 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 77 77: x86 bp modify : Ok 2022-10-05 19:47:33 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 78 78: x86 Sample parsing : Ok 2022-10-05 19:47:33 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 79 79: build id cache operations : FAILED! 2022-10-05 19:47:34 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 80 80: daemon operations : Ok 2022-10-05 19:47:49 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 81 81: perf pipe recording and injection test : Ok 2022-10-05 19:47:59 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 83 83: probe libc's inet_pton & backtrace it with ping : Ok 2022-10-05 19:48:01 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 85 85: Zstd perf.data compression/decompression : Ok 2022-10-05 19:48:04 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 86 86: perf record tests : Ok 2022-10-05 19:48:08 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 87 87: perf record offcpu profiling tests : Skip 2022-10-05 19:48:09 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 88 88: perf stat CSV output linter : Ok 2022-10-05 19:48:12 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 89 89: perf stat csv summary test : Ok 2022-10-05 19:48:14 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 90 90: perf stat JSON output linter : Ok 2022-10-05 19:48:17 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 91 91: perf stat metrics (shadow stat) test : Ok 2022-10-05 19:48:21 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 92 92: perf stat tests : Ok 2022-10-05 19:48:23 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 93 93: perf all metricgroups test : Ok 2022-10-05 19:48:35 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 94 94: perf all metrics test : Skip 2022-10-05 19:50:35 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 95 95: perf all PMU test : Ok 2022-10-05 19:52:55 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 96 96: perf stat --bpf-counters test : Skip 2022-10-05 19:52:55 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 97 97: Check Arm64 callgraphs are complete in fp mode : Skip 2022-10-05 19:52:55 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 98 98: Check Arm CoreSight trace data recording and synthesized samples: Skip 2022-10-05 19:52:56 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 99 99: Check Arm SPE trace data recording and synthesized samples : Skip 2022-10-05 19:52:56 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 100 100: Check Arm SPE doesn't hang when there are forks : Skip 2022-10-05 19:52:57 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 101 101: Check branch stack sampling : Ok 2022-10-05 19:53:36 sudo /usr/src/perf_selftests-x86_64-rhel-8.3-func-63817398b945c74929af2b95dba4548a188c1671/tools/perf/perf test 102 102: Miscellaneous Intel PT testing : Skip If you fix the issue, kindly add following tag | Reported-by: kernel test robot | Link: https://lore.kernel.org/r/202210100952.823def7b-yujie.liu@intel.com To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. -- 0-DAY CI Kernel Test Service https://01.org/lkp