On Thu, Sep 24, 2026 at 10:30:00AM +0530, Sarthak Sharma wrote: > This series fixes several correctness issues in mremap_test and > simplifies and strengthens its data validation. > > Patch 1 converts the mremap_test to use kselftest helpers, removes > manual tracking of failed tests and corrects some spelling errors. > > Patches 2 to 5 fix userfaultfd skipping, unexpected mremap success > handling, multi-VMA data validation and failure reporting when data > corruption is detected. > > Patch 6 removes the randomization and uses a simple pattern based approach. > > Patch 7 removes perf tests and timing infrastructure. > > Patch 8 removes validation threshold and always validates complete mappings. > > Patch 9 strengthens the multi VMA validation by also checking the > mapping state of holes after remapping.
Even if I don't get a chance to look through this, just want to say thanks for taking a look at this! The mremap tests have always been hairy, when I added extra tests there I didn't love what I saw so it's great to see it get some attention! :) > > --- > Sarthak Sharma (9): > selftests/mm: mremap_test: use kselftest helpers > selftests/mm: mremap_test: skip test when userfaultfd is unavailable > selftests/mm: mremap_test: fail unexpected mremap successes > selftests/mm: mremap_test: correct multiple VMA range size > selftests/mm: mremap_test: fail on data corruption > selftests/mm: mremap_test: replace random data with deterministic > pattern > selftests/mm: mremap_test: remove perf tests and timing > selftests/mm: mremap_test: remove validation threshold > selftests/mm: mremap_test: strengthen multi VMA validation > > tools/testing/selftests/mm/mremap_test.c | 600 +++++++++-------------- > 1 file changed, 220 insertions(+), 380 deletions(-) > > -- > 2.53.0 > -- Cheers, Lorenzo
