On 11 Aug 2025, at 3:52, Baolin Wang wrote:
> On 2025/8/9 03:01, Zi Yan wrote:
>> The helper gathers an folio order statistics of folios within a virtual
>> address range and checks it against a given order list. It aims to provide
>> a more precise folio order check instead of just checking the existence of
>> PMD folios.
>>
>> Signed-off-by: Zi Yan <z...@nvidia.com>
>> ---
>> .../selftests/mm/split_huge_page_test.c | 4 +-
>> tools/testing/selftests/mm/vm_util.c | 133 ++++++++++++++++++
>> tools/testing/selftests/mm/vm_util.h | 7 +
>> 3 files changed, 141 insertions(+), 3 deletions(-)
>>
>
> [snip]
>
>> +
>> +int check_folio_orders(char *vaddr_start, size_t len, int pagemap_file,
>> + int kpageflags_file, int orders[], int nr_orders)
>> +{
>> + int *vaddr_orders;
>> + int status;
>> + int i;
>> +
>> + vaddr_orders = (int *)malloc(sizeof(int) * nr_orders);
>> +
>> + if (!vaddr_orders)
>> + ksft_exit_fail_msg("Cannot allocate memory for vaddr_orders");
>> +
>> + memset(vaddr_orders, 0, sizeof(int) * nr_orders);
>> + status = gather_folio_orders(vaddr_start, len, pagemap_file,
>> + kpageflags_file, vaddr_orders, nr_orders);
>> + if (status)
>
> Missed calling free(vaddr_orders) before returning.
>
>> + return status;
>> +
>> + status = 0;
>> + for (i = 0; i < nr_orders; i++)
>> + if (vaddr_orders[i] != orders[i]) {
>> + ksft_print_msg("order %d: expected: %d got %d\n", i,
>> + orders[i], vaddr_orders[i]);
>> + status = -1;
>> + }
>> +
>
> Ditto.
>
>> + return status;
>> +}
>> +
Will add free() in the above two locations. Thank you for spotting them.
Best Regards,
Yan, Zi
