perf test: Add file offset diagnostic test for corrupted perf.data

2026-06-03T19:31:04+00:00

Add a shell test that verifies the file_offset diagnostic messages work correctly when perf encounters corrupted events. The test corrupts a MMAP2 event's size field in a recorded perf.data file, then checks that perf report produces warning messages that include both the file offset (e.g. "at offset 0x2738:") and the event type name with numeric id (e.g. "MMAP2 (10)"). This exercises the diagnostic improvements from the file_offset series, which retrofitted all skip/stop/error messages to include the position and type of the problematic event. Reviewed-by: Ian Rogers Assisted-by: Claude:claude-opus-4.6 Signed-off-by: Arnaldo Carvalho de Melo

kernel/linux.git/tools/perf/tests/shell/data_file_offset_diagnostics.sh, branch v7.2-rc1

perf test: Add file offset diagnostic test for corrupted perf.data