Re: [PATCH] perf: Align cpu map events properly.

[Arnaldo Carvalho de Melo]

Em Thu, Oct 11, 2018 at 10:46:55PM -0700, David Miller escreveu:
> The size of the resulting cpu map can be smaller than a multiple
> of sizeof(u64), resulting in SIGBUS on cpus like Sparc as the
> next event will not be aligned properly.
> 
> Fixes: 6c872901af07 ("perf cpu_map: Add cpu_map event synthesize function")
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>

Thanks, applied to perf/urgent.

- Arnaldo
 
> diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
> index 0cd42150f712..0988eb3b844b 100644
> --- a/tools/perf/util/event.c
> +++ b/tools/perf/util/event.c
> @@ -1081,6 +1081,7 @@ void *cpu_map_data__alloc(struct cpu_map *map, size_t *size, u16 *type, int *max
>  	}
>  
>  	*size += sizeof(struct cpu_map_data);
> +	*size = PERF_ALIGN(*size, sizeof(u64));
>  	return zalloc(*size);
>  }
>