On Fri, Aug 30, 2024 at 5:52 AM Pedro Falcato <pedro.falcato@xxxxxxxxx> wrote:
>
> On Thu, Aug 29, 2024 at 09:43:50PM GMT, jeffxu@xxxxxxxxxxxx wrote:
> > From: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> >
> > Add a testcase to cover all sealed madvise type.
> >
> > Signed-off-by: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> > ---
> > tools/testing/selftests/mm/mseal_test.c | 108 +++++++++++++++++++++++-
> > 1 file changed, 107 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/testing/selftests/mm/mseal_test.c b/tools/testing/selftests/mm/mseal_test.c
> > index adc646cf576c..ae06c354220d 100644
> > --- a/tools/testing/selftests/mm/mseal_test.c
> > +++ b/tools/testing/selftests/mm/mseal_test.c
> > @@ -2121,6 +2121,107 @@ static void test_seal_madvise_nodiscard(bool seal)
> > REPORT_TEST_PASS();
> > }
> >
> > +static void test_seal_discard_madvise_advice(void)
> > +{
> > + void *ptr;
> > + unsigned long page_size = getpagesize();
> > + unsigned long size = 4 * page_size;
> > + int ret;
> > + int sealed_advice[] = {MADV_FREE, MADV_DONTNEED,
> > + MADV_DONTNEED_LOCKED, MADV_REMOVE,
> > + MADV_DONTFORK, MADV_WIPEONFORK};
> > + int size_sealed_advice = sizeof(sealed_advice) / sizeof(int);
> > +
> > + setup_single_address(size, &ptr);
> > + FAIL_TEST_IF_FALSE(ptr != (void *)-1);
> > +
> > + ret = seal_single_address(ptr, size);
> > + FAIL_TEST_IF_FALSE(!ret);
> > +
> > + for (int i = 0; i < size_sealed_advice; i++) {
> > + ret = sys_madvise(ptr, size, sealed_advice[i]);
> > + FAIL_TEST_IF_FALSE(ret < 0);
> > + FAIL_TEST_IF_FALSE(errno == EPERM);
> > + }
> > +
> > + REPORT_TEST_PASS();
> > +}
>
> This can replace some of the other 9 discard tests already there, no?
>
No, this is focused on enumerating all types.
> > +
> > +static void test_munmap_free_multiple_ranges(bool seal)
> > +{
> > + void *ptr;
> > + unsigned long page_size = getpagesize();
> > + unsigned long size = 8 * page_size;
> > + int ret;
> > + int prot;
> > +
> > + setup_single_address(size, &ptr);
> > + FAIL_TEST_IF_FALSE(ptr != (void *)-1);
> > +
> > + /* unmap one page from beginning. */
> > + ret = sys_munmap(ptr, page_size);
> > + FAIL_TEST_IF_FALSE(!ret);
> > +
> > + /* unmap one page from middle. */
> > + ret = sys_munmap(ptr + 4 * page_size, page_size);
> > + FAIL_TEST_IF_FALSE(!ret);
> > +
> > + size = get_vma_size(ptr + page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 3 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > + size = get_vma_size(ptr + 5 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 3 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > +
> > + /* seal the last page */
> > + if (seal) {
> > + ret = sys_mseal(ptr + 7 * page_size, page_size);
> > + FAIL_TEST_IF_FALSE(!ret);
> > +
> > + size = get_vma_size(ptr + 1 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 3 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > + size = get_vma_size(ptr + 5 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 2 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > + size = get_vma_size(ptr + 7 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 1 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > + }
> > +
> > + /* munmap all 8 pages from beginning */
> > + ret = sys_munmap(ptr, 8 * page_size);
> > + if (seal) {
> > + FAIL_TEST_IF_FALSE(ret);
> > +
> > + /* verify mapping are not changed */
> > + size = get_vma_size(ptr + 1 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 3 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > + size = get_vma_size(ptr + 5 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 2 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > +
> > + size = get_vma_size(ptr + 7 * page_size, &prot);
> > + FAIL_TEST_IF_FALSE(size == 1 * page_size);
> > + FAIL_TEST_IF_FALSE(prot == 4);
> > + } else {
> > + FAIL_TEST_IF_FALSE(!ret);
> > +
> > + for (int i = 0; i < 8; i++) {
> > + size = get_vma_size(ptr, &prot);
> > + FAIL_TEST_IF_FALSE(size == 0);
> > + }
> > + }
> > +
> > + REPORT_TEST_PASS();
> > +}
>
> Unrelated munmap change.
will move.
>
> --
> Pedro
