From: John Keeping <john@xxxxxxxxxxxx> commit ab6cd0e5276e24403751e0b3b8ed807738a8571f upstream. In the next commit we will add new fields to map_groups and we need these to be null if no value is assigned. The simplest way to achieve this is to request zeroed memory from the allocator. Signed-off-by: John Keeping <john@xxxxxxxxxxxx> Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: john keeping <john@xxxxxxxxxxxx> Link: http://lkml.kernel.org/r/20190815100146.28842-1-john@xxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Cc: Andres Freund <andres@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- tools/perf/util/map.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -637,7 +637,7 @@ bool map_groups__empty(struct map_groups struct map_groups *map_groups__new(struct machine *machine) { - struct map_groups *mg = malloc(sizeof(*mg)); + struct map_groups *mg = zalloc(sizeof(*mg)); if (mg != NULL) map_groups__init(mg, machine);
