admin/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2025-12-07 20:06:24 +00:00
Code Issues Packages Projects Releases Wiki Activity

mm/damon/tests/core-kunit: handle alloc failures on dasmon_test_merge_regions_of()

Browse Source 
damon_test_merge_regions_of() is assuming all dynamic memory allocation in
it will succeed.  Those are indeed likely in the real use cases since
those allocations are too small to fail, but theoretically those could
fail.  In the case, inappropriate memory access can happen.  Fix it by
appropriately cleanup pre-allocated memory and skip the execution of the
remaining tests in the failure cases.

Link: https://lkml.kernel.org/r/20251101182021.74868-8-sj@kernel.org
Fixes: 17ccae8bb5 ("mm/damon: add kunit tests")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@google.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: <stable@vger.kernel.org>	[5.15+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park
2025-11-01 11:20:01 -07:00
committed by Andrew Morton
parent 3d443dd29a
commit 0998d27572
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
mm/damon/tests/core-kunit.h
View File

@@ -248,8 +248,14 @@ static void damon_test_merge_regions_of(struct kunit *test)
int i;
t = damon_new_target();
if (!t)
kunit_skip(test, "target alloc fail");
for (i = 0; i < ARRAY_SIZE(sa); i++) {
r = damon_new_region(sa[i], ea[i]);
if (!r) {
damon_free_target(t);
kunit_skip(test, "region alloc fail");
}
r->nr_accesses = nrs[i];
r->nr_accesses_bp = nrs[i] * 10000;
damon_add_region(r, t);