From 0bf90aac4341a0e2e0ecdc130b0116e2d448fa9f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Date: Wed, 15 Feb 2023 15:05:57 +0200 Subject: [PATCH] selftests/resctrl: Return NULL if malloc_and_init_memory() did not alloc mem MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Upstream commit 22a8be280383812235131dda18a8212a59fadd2d ] 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") Co-developed-by: Fenghua Yu Signed-off-by: Fenghua Yu Signed-off-by: Ilpo Järvinen Reviewed-by: Reinette Chatre Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin --- 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..c20d0a7ecbe6 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 NULL; p64 = (uint64_t *)p; s64 = s / sizeof(uint64_t);