From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5AFA423D7FD; Mon, 17 Nov 2025 01:35:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763343311; cv=none; b=qgBN50J8V9+2nV1IgqjtPn+S0AHke+MidCjcBGyreQ76CM8Z34gD/6/j95y47wsDuUauZtRuW+HPBQx3Kl+c0NtjzbyrE6rJ3LCvKNC6EGMf1z+GugjiC4191KniXiMqLcsYEQXzlUaCA3sEF5SyzcKBmInfTlB0I+nanmT7JR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763343311; c=relaxed/simple; bh=posgotg2/R0YV4Io7YgmYIn3wMxnylBhXDalCW0RXz8=; h=Date:To:From:Subject:Message-Id; b=LZlw43Bupw3Y5ThGvoRGUlUjvspdaaif5qrjFjhyerN94eQeH4NE8MNyKoko0YaQqpdRpQj0lUK62aj7ows79+eCeI3deAMUzVkuQ4sGb1Opw8TXg6vV0Yrn7ib6fnTh+NiJwt6Jr5odBgfPe1aWoh94vBW5rx7NYiZ1lMElSGE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ZhmsReOS; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ZhmsReOS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3151AC113D0; Mon, 17 Nov 2025 01:35:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1763343311; bh=posgotg2/R0YV4Io7YgmYIn3wMxnylBhXDalCW0RXz8=; h=Date:To:From:Subject:From; b=ZhmsReOS8CgO1+Na1jJg0mnhyrIlTXXIb980bohGzFql865NPl+dOlHwH4le6K93S 3NKhcWGWBvWRIak7MxzReA5keuAZe9U6tt2SMqBivlsQvHDQIZgI1fAQ82od5Pnnmg lRPLl7OHwUv/l2Oj01dWBZ3y6lZ3RfFBpkfeBwE0= Date: Sun, 16 Nov 2025 17:35:10 -0800 To: mm-commits@vger.kernel.org,wangkefeng.wang@huawei.com,stable@vger.kernel.org,davidgow@google.com,brendan.higgins@linux.dev,sj@kernel.org,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-damon-tests-vaddr-kunit-handle-alloc-failures-in-damon_test_split_evenly_fail.patch removed from -mm tree Message-Id: <20251117013511.3151AC113D0@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/damon/tests/vaddr-kunit: handle alloc failures in damon_test_split_evenly_fail() has been removed from the -mm tree. Its filename was mm-damon-tests-vaddr-kunit-handle-alloc-failures-in-damon_test_split_evenly_fail.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: SeongJae Park Subject: mm/damon/tests/vaddr-kunit: handle alloc failures in damon_test_split_evenly_fail() Date: Sat, 1 Nov 2025 11:20:12 -0700 damon_test_split_evenly_fail() 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/20251101182021.74868-19-sj@kernel.org Fixes: 17ccae8bb5c9 ("mm/damon: add kunit tests") Signed-off-by: SeongJae Park Cc: Brendan Higgins Cc: David Gow Cc: Kefeng Wang Cc: [5.15+] Signed-off-by: Andrew Morton --- mm/damon/tests/vaddr-kunit.h | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) --- a/mm/damon/tests/vaddr-kunit.h~mm-damon-tests-vaddr-kunit-handle-alloc-failures-in-damon_test_split_evenly_fail +++ a/mm/damon/tests/vaddr-kunit.h @@ -256,7 +256,16 @@ static void damon_test_split_evenly_fail unsigned long start, unsigned long end, unsigned int nr_pieces) { struct damon_target *t = damon_new_target(); - struct damon_region *r = damon_new_region(start, end); + struct damon_region *r; + + if (!t) + kunit_skip(test, "target alloc fail"); + + r = damon_new_region(start, end); + if (!r) { + damon_free_target(t); + kunit_skip(test, "region alloc fail"); + } damon_add_region(r, t); KUNIT_EXPECT_EQ(test, _ Patches currently in -mm which might be from sj@kernel.org are mm-damon-tests-core-kunit-remove-dynamic-allocs-on-damos_test_commit_filter.patch mm-damon-tests-core-kunit-split-out-damos_test_commit_filter-core-logic.patch mm-damon-tests-core-kunit-extend-damos_test_commit_filter_for-for-union-fields.patch mm-damon-tests-core-kunit-add-test-cases-to-damos_test_commit_filter.patch mm-damon-tests-core-kunit-add-damos_commit_quota_goal-test.patch mm-damon-tests-core-kunit-add-damos_commit_quota_goals-test.patch mm-damon-tests-core-kunit-add-damos_commit_quota-test.patch mm-damon-core-pass-migrate_dests-to-damos_commit_dests.patch mm-damon-tests-core-kunit-add-damos_commit_dests-test.patch mm-damon-tests-core-kunit-add-damos_commit-test.patch mm-damon-tests-core-kunit-add-damon_commit_target_regions-test.patch mm-damon-rename-damos-core-filter-helpers-to-have-word-core.patch mm-damon-rename-damos-filters-to-damos-core_filters.patch mm-damon-vaddr-cleanup-using-pmd_trans_huge_lock.patch mm-damon-vaddr-use-vm_normal_folio_pmd-instead-of-damon_get_folio.patch mm-damon-vaddr-consistently-use-only-pmd_entry-for-damos_migrate.patch mm-damon-tests-core-kunit-remove-damon_min_region-redefinition.patch selftests-damon-sysfspy-merge-damon-status-dumping-into-commitment-assertion.patch docs-mm-damon-maintainer-profile-fix-a-typo-on-mm-untable-link.patch docs-mm-damon-maintainer-profile-fix-grammartical-errors.patch