Commit 0ed149cf authored Oct 11, 2018 by David Miller Committed by Arnaldo Carvalho de Melo Oct 16, 2018

perf cpu_map: Align cpu map synthesized events properly.

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 <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@intel.com>
Fixes: 6c872901 ("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 <acme@redhat.com>

parent c458a620

tools/perf/util/event.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

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