Perf trace on perf.data fails as below:
./perf trace record -- sleep 1
./perf trace -i perf.data
perf: Segmentation fault
Segmentation fault (core dumped)
Backtrace pointed to :
?? ()
perf_session.process_user_event ()
reader.read_event ()
perf_session.process_events ()
cmd_trace ()
run_builtin ()
handle_internal_command ()
main ()
Further debug pointed that, segmentation fault happens when
trying to access id_index. Code snippet:
case PERF_RECORD_ID_INDEX:
err = tool->id_index(session, event);
Since 'commit
15d4a6f41d72 ("perf tool: Remove
perf_tool__fill_defaults()")', perf_tool__fill_defaults is
removed. All tools are initialized using perf_tool__init()
prior to use. But in builtin-trace, perf_tool__init is not
used and hence the defaults are not initialized. Use
perf_tool__init() in perf trace to handle the initialization.
Reported-by: Tejas Manhas <Tejas.Manhas1@ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.ibm.com>
Link: https://lore.kernel.org/r/20250225113157.28836-1-atrajeev@linux.ibm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
struct evsel *evsel;
int err = -1;
+ perf_tool__init(&trace->tool, /*ordered_events=*/true);
trace->tool.sample = trace__process_sample;
trace->tool.mmap = perf_event__process_mmap;
trace->tool.mmap2 = perf_event__process_mmap2;