SeongJae Park 25e8acbcf1 mm/damon/tests/core-kunit: skip damon_test_nr_accesses_to_accesses_bp() if aggr_interval is zero ... The aggregation interval of test purpose damon_attrs for damon_test_nr_accesses_to_accesses_bp() becomes zero on 32 bit architecture, since size of int and long types are same. As a result, damon_nr_accesses_to_accesses_bp() call with the test data triggers divide-by-zero exception. damon_nr_accesses_to_accesses_bp() shouldn't be called with such data, and the non-test code avoids that by checking the case on damon_update_monitoring_results(). Skip the test code in the case, and add an explicit caution of the case on the comment for the test target function. Link: https://lkml.kernel.org/r/20240905162423.74053-1-sj@kernel.org Fixes: 5e06ad5900 ("mm/damon/core-test: test max_nr_accesses overflow caused divide-by-zero") Signed-off-by: SeongJae Park <sj@kernel.org> Reported-by: Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/c771b962-a58f-435b-89e4-1211a9323181@roeck-us.net Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2024-09-09 16:39:14 -07:00
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.kunitconfig	mm/damon/tests: add .kunitconfig file for DAMON kunit tests	2024-09-03 21:15:58 -07:00
core-kunit.h	mm/damon/tests/core-kunit: skip damon_test_nr_accesses_to_accesses_bp() if aggr_interval is zero	2024-09-09 16:39:14 -07:00
dbgfs-kunit.h	mm/damon: move kunit tests to tests/ subdirectory with _kunit suffix	2024-09-03 21:15:58 -07:00
sysfs-kunit.h	mm/damon: move kunit tests to tests/ subdirectory with _kunit suffix	2024-09-03 21:15:58 -07:00
vaddr-kunit.h	mm/damon/tests/vaddr-kunit: init maple tree without MT_FLAGS_LOCK_EXTERN	2024-09-09 16:39:13 -07:00