mm/damon/tests/sysfs-kunit: handle alloc failures on damon_sysfs_test_add_targets()

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commit 7d808bf139 upstream.

damon_sysfs_test_add_targets() 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/20251101182021.74868-21-sj@kernel.org
Fixes: b8ee5575f7 ("mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()")
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>	[6.7+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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SeongJae Park 2025-11-01 11:20:14 -07:00 • committed by Greg Kroah-Hartman

parent f4d24ea32f

commit 8a2944f5a5

1 changed files with 25 additions and 0 deletions

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mm/damon/tests/sysfs-kunit.h

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