From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnaldo Carvalho de Melo Subject: [PATCH 08/11] perf cpu_map: Align cpu map synthesized events properly. Date: Wed, 17 Oct 2018 19:54:58 -0300 Message-ID: <20181017225501.32150-9-acme@kernel.org> References: <20181017225501.32150-1-acme@kernel.org> Return-path: In-Reply-To: <20181017225501.32150-1-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Ingo Molnar Cc: Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, David Miller , Jiri Olsa , Kan Liang , Arnaldo Carvalho de Melo List-Id: linux-perf-users.vger.kernel.org From: David Miller 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. Signed-off-by: David S. Miller Cc: Jiri Olsa Cc: Kan Liang Fixes: 6c872901af07 ("perf cpu_map: Add cpu_map event synthesize function") Link: http://lkml.kernel.org/r/20181011.224655.716771175766946817.davem@davemloft.net Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/event.c | 1 + 1 file changed, 1 insertion(+) 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); } -- 2.14.4