perf tests: Do not use sizeof on pointer type

Author: Vaishali Thakkar <>

Using sizeof on a malloced pointer type will return the wordsize which
can often cause one to allocate a buffer much smaller than it is needed.
So, here do not use sizeof on pointer type.

Note that this has no effect on runtime because 'dsos' is a pointer to a

Problem found using Coccinelle.

Signed-off-by: Vaishali Thakkar 
Cc: Alexander Shishkin 
Cc: Peter Zijlstra 
Signed-off-by: Arnaldo Carvalho de Melo 
 tools/perf/tests/dso-data.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c
index dc673ff..8cf0d9e 100644
--- a/tools/perf/tests/dso-data.c
+++ b/tools/perf/tests/dso-data.c
@@ -202,7 +202,7 @@ static int dsos__create(int cnt, int size)
 	int i;
-	dsos = malloc(sizeof(dsos) * cnt);
+	dsos = malloc(sizeof(*dsos) * cnt);
 	TEST_ASSERT_VAL("failed to alloc dsos array", dsos);
 	for (i = 0; i < cnt; i++) {