On Thu, 2 Apr 2026 16:59:31 -0700 Anthony Yznaga <[email protected]> wrote:
> Mark Brown reported seeing a regression in -next on 32 bit arm with the > mlock selftests. Before exiting and marking the tests failed, the following > message was logged after an attempt to create a MAP_DROPPABLE mapping: > > Bail out! mmap error: Unknown error 524 > > It turns out error 524 is ENOTSUPP which is an error that userspace is not > supposed to see, but it indicates in this instance that MAP_DROPPABLE is > not supported. > > The first patch changes the errno returned to EOPNOTSUPP. The second patch > is a second version of a prior patch to introduce selftests to verify > locking behavior with droppable mappings with the additonal change to skip > the tests when MAP_DROPPABLE is not supported. Thanks, I updated mm.git's mm-unstable branch to this version. In [1/2] I added Mark's Reported.by:. We had David's Acked-by: on v1's [1/2] patch so I reinstated that.
