[PATCH] perf: tests: fix some mmemory leak issues

[gushengxian]

From: gushengxian <gushengxian@xxxxxxxxxx>

Some memory leak issues should be fixed by free().
Reported by cppcheck.

Signed-off-by: gushengxian <gushengxian@xxxxxxxxxx>
---
 tools/perf/arch/arm/tests/dwarf-unwind.c     | 1 +
 tools/perf/arch/arm64/tests/dwarf-unwind.c   | 1 +
 tools/perf/arch/powerpc/tests/dwarf-unwind.c | 1 +
 tools/perf/arch/x86/tests/dwarf-unwind.c     | 1 +
 4 files changed, 4 insertions(+)

diff --git a/tools/perf/arch/arm/tests/dwarf-unwind.c b/tools/perf/arch/arm/tests/dwarf-unwind.c
index ccfa87055c4a..f2541d1dbb02 100644
--- a/tools/perf/arch/arm/tests/dwarf-unwind.c
+++ b/tools/perf/arch/arm/tests/dwarf-unwind.c
@@ -39,6 +39,7 @@ static int sample_ustack(struct perf_sample *sample,
 	memcpy(buf, (void *) sp, stack_size);
 	stack->data = (char *) buf;
 	stack->size = stack_size;
+	free(buf);
 	return 0;
 }
 
diff --git a/tools/perf/arch/arm64/tests/dwarf-unwind.c b/tools/perf/arch/arm64/tests/dwarf-unwind.c
index 46147a483049..ecd25c77a71f 100644
--- a/tools/perf/arch/arm64/tests/dwarf-unwind.c
+++ b/tools/perf/arch/arm64/tests/dwarf-unwind.c
@@ -39,6 +39,7 @@ static int sample_ustack(struct perf_sample *sample,
 	memcpy(buf, (void *) sp, stack_size);
 	stack->data = (char *) buf;
 	stack->size = stack_size;
+	free(buf);
 	return 0;
 }
 
diff --git a/tools/perf/arch/powerpc/tests/dwarf-unwind.c b/tools/perf/arch/powerpc/tests/dwarf-unwind.c
index 8efd9ed9e9db..e57a8ca52ce7 100644
--- a/tools/perf/arch/powerpc/tests/dwarf-unwind.c
+++ b/tools/perf/arch/powerpc/tests/dwarf-unwind.c
@@ -40,6 +40,7 @@ static int sample_ustack(struct perf_sample *sample,
 	memcpy(buf, (void *) sp, stack_size);
 	stack->data = (char *) buf;
 	stack->size = stack_size;
+	free(buf);
 	return 0;
 }
 
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index 478078fb0f22..da90b33a1e28 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -47,6 +47,7 @@ static int sample_ustack(struct perf_sample *sample,
 #endif
 	stack->data = (char *) buf;
 	stack->size = stack_size;
+	free(buf);
 	return 0;
 }
 
-- 
2.25.1