[merged mm-stable] selftests-cgroup-add-malloc-failures-checks-in-test_memcontrol.patch removed from -mm tree

[merged mm-stable] selftests-cgroup-add-malloc-failures-checks-in-test_memcontrol.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: selftests: cgroup: add 'malloc' failures checks in test_memcontrol
has been removed from the -mm tree.  Its filename was
     selftests-cgroup-add-malloc-failures-checks-in-test_memcontrol.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Ivan Orlov <ivan.orlov0322@gmail.com>
Subject: selftests: cgroup: add 'malloc' failures checks in test_memcontrol
Date: Sun, 26 Feb 2023 16:16:33 +0300

There are several 'malloc' calls in test_memcontrol, which can be
unsuccessful.  This patch will add 'malloc' failures checking to give more
details about test's fail reasons and avoid possible undefined behavior
during the future null dereference (like the one in
alloc_anon_50M_check_swap function).

Link: https://lkml.kernel.org/r/20230226131634.34366-1-ivan.orlov0322@gmail.com
Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 tools/testing/selftests/cgroup/test_memcontrol.c |   15 +++++++++++++
 1 file changed, 15 insertions(+)

--- a/tools/testing/selftests/cgroup/test_memcontrol.c~selftests-cgroup-add-malloc-failures-checks-in-test_memcontrol
+++ a/tools/testing/selftests/cgroup/test_memcontrol.c
@@ -98,6 +98,11 @@ static int alloc_anon_50M_check(const ch
 	int ret = -1;
 
 	buf = malloc(size);
+	if (buf == NULL) {
+		fprintf(stderr, "malloc() failed\n");
+		return -1;
+	}
+
 	for (ptr = buf; ptr < buf + size; ptr += PAGE_SIZE)
 		*ptr = 0;
 
@@ -211,6 +216,11 @@ static int alloc_anon_noexit(const char
 	char *buf, *ptr;
 
 	buf = malloc(size);
+	if (buf == NULL) {
+		fprintf(stderr, "malloc() failed\n");
+		return -1;
+	}
+
 	for (ptr = buf; ptr < buf + size; ptr += PAGE_SIZE)
 		*ptr = 0;
 
@@ -778,6 +788,11 @@ static int alloc_anon_50M_check_swap(con
 	int ret = -1;
 
 	buf = malloc(size);
+	if (buf == NULL) {
+		fprintf(stderr, "malloc() failed\n");
+		return -1;
+	}
+
 	for (ptr = buf; ptr < buf + size; ptr += PAGE_SIZE)
 		*ptr = 0;
 
_

Patches currently in -mm which might be from ivan.orlov0322@gmail.com are