Em Thu, Jan 17, 2019 at 06:03:04AM -0800, Song Liu escreveu: > On Thu, Jan 17, 2019 at 3:54 AM Jiri Olsa <[email protected]> wrote: > > > > Song Liu reported crash in perf record: > > > > > #0 0x0000000000500055 in ordered_events(float, long double,...)(...) () > > > #1 0x0000000000500196 in ordered_events.reinit () > > > #2 0x00000000004fe413 in perf_session.process_events () > > > #3 0x0000000000440431 in cmd_record () > > > #4 0x00000000004a439f in run_builtin () > > > #5 0x000000000042b3e5 in main ()" > > > > This can happen when we get out of the buffers during > > event processing. The subsequent ordered_events__free > > assumes the oe->buffer != NULL and crashes. Adding > > the check to prevent that. > > > > Cc: Stephane Eranian <[email protected]> > > Fixes: d5ceb62b3654 ("perf ordered_events: Add 'struct > > ordered_events_buffer' layer") > > Reported-by: Song Liu <[email protected]> > > Link: http://lkml.kernel.org/n/[email protected] > > Signed-off-by: Jiri Olsa <[email protected]> > > Reviewed-and-tested-by: Song Liu <[email protected]> > > Thanks again for the fix!
Thanks, applied to acme/perf/urgent, - Arnaldo
