[PATCH 1/4] selftests/resctrl: Return error if memory is not allocated

[Ilpo Järvinen]

From: Fenghua Yu <fenghua.yu@xxxxxxxxx>

malloc_and_init_memory() in fill_buf isn't checking if memalign()
successfully allocated memory or not before accessing the memory.

Check the return value of memalign() and return NULL if allocating
aligned memory fails.

Fixes: a2561b12fe39 ("selftests/resctrl: Add built in benchmark")
Signed-off-by: Fenghua Yu <fenghua.yu@xxxxxxxxx>
---
 tools/testing/selftests/resctrl/fill_buf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/resctrl/fill_buf.c b/tools/testing/selftests/resctrl/fill_buf.c
index 56ccbeae0638..f4880c962ec4 100644
--- a/tools/testing/selftests/resctrl/fill_buf.c
+++ b/tools/testing/selftests/resctrl/fill_buf.c
@@ -68,6 +68,8 @@ static void *malloc_and_init_memory(size_t s)
 	size_t s64;
 
 	void *p = memalign(PAGE_SIZE, s);
+	if (!p)
+		return p;
 
 	p64 = (uint64_t *)p;
 	s64 = s / sizeof(uint64_t);
-- 
2.30.2