Re: [PATCH v4 1/1] selftests/mm/uffd: Refactor non-composite global vars into struct

[Ujwal Kundur]

> And I hit this:
>
> # -------------------------
> # running ./uffd-unit-tests
> # -------------------------
> # Testing UFFDIO_API (with syscall)... done
> # Testing UFFDIO_API (with /dev/userfaultfd)... done
> # Testing register-ioctls on anon... ERROR: munmap (errno=22, @uffd-common.c:277)
> # done
> # [FAIL]
> not ok 6 uffd-unit-tests # exit=1
>
> It reproduced on a second run but I haven't dug any further at all.

I haven't been able to reproduce this -- both with and without my
patch on mm-new and mainline; I see why you've commented out
uffd-tests in your test script :)
I ran into this *once* earlier when liburing wasn't installed, perhaps
that could be related?

Will send a v5 soon retaining the test_uffdio_copy_eexist variable as suggested.

Thanks,
Ujwal