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selftests: cgroup: Add 'malloc' failures checks in test_memcontrol

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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).

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>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Ivan Orlov 2023-02-26 16:16:33 +03:00 committed by Shuah Khan
parent 350d216dc2
commit c83f320e55
1 changed files with 15 additions and 0 deletions
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15
tools/testing/selftests/cgroup/test_memcontrol.c
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@ -98,6 +98,11 @@ static int alloc_anon_50M_check(const char *cgroup, void *arg)
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 *cgroup, void *arg)
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(const char *cgroup, void *arg)
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;