From: David Miller <[email protected]> [ Upstream commit 0ed149cf5239cc6e7e65bf00f769e8f1e91076c0 ]
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 <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Kan Liang <[email protected]> Fixes: 6c872901af07 ("perf cpu_map: Add cpu_map event synthesize function") Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> Signed-off-by: Sasha Levin <[email protected]> --- 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 663192395780..2d5744d986f0 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -839,6 +839,7 @@ 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); } -- 2.17.1
