diff options
| author | Ravi Bangoria <ravi.bangoria@amd.com> | 2025-11-13 16:01:23 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-11-13 17:17:41 -0300 |
| commit | d0206db94b36c998c11458cfdae2f45ba20bc4fb (patch) | |
| tree | 41adf6f7977186af6e06f467578178bac8d3cb94 | |
| parent | 84003ab3d0ca3717e4b36071c3c5f8b3c70e317c (diff) | |
perf lock: Fix segfault due to missing kernel map
Kernel maps are encoded in PERF_RECORD_MMAP2 samples but "perf lock
report" and "perf lock contention" do not process MMAP2 samples.
Because of that, machine->vmlinux_map stays NULL and any later access
triggers a segmentation fault.
Fix it by adding ->mmap2() callbacks.
Fixes: 53b00ff358dc75b1 ("perf record: Make --buildid-mmap the default")
Reported-by: Tycho Andersen (AMD) <tycho@kernel.org>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Tested-by: Tycho Andersen (AMD) <tycho@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ananth Narayan <ananth.narayan@amd.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Santosh Shukla <santosh.shukla@amd.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/builtin-lock.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 078634461df2..e8962c985d34 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -1867,6 +1867,7 @@ static int __cmd_report(bool display_info) eops.sample = process_sample_event; eops.comm = perf_event__process_comm; eops.mmap = perf_event__process_mmap; + eops.mmap2 = perf_event__process_mmap2; eops.namespaces = perf_event__process_namespaces; eops.tracing_data = perf_event__process_tracing_data; session = perf_session__new(&data, &eops); @@ -2023,6 +2024,7 @@ static int __cmd_contention(int argc, const char **argv) eops.sample = process_sample_event; eops.comm = perf_event__process_comm; eops.mmap = perf_event__process_mmap; + eops.mmap2 = perf_event__process_mmap2; eops.tracing_data = perf_event__process_tracing_data; perf_env__init(&host_env); |