| From: |
| Mike Rapoport <rppt-AT-kernel.org> |
| To: |
| Andrew Morton <akpm-AT-linux-foundation.org> |
| Subject: |
| [PATCH v2 0/3] userfaultfd: verify VMA state across UFFDIO_COPY retry |
| Date: |
| Wed, 27 May 2026 21:47:48 +0300 |
| Message-ID: |
| <20260527184751.4147364-1-rppt@kernel.org> |
| Cc: |
| David Carlier <devnexen-AT-gmail.com>, David Hildenbrand <david-AT-kernel.org>, Heechan Kang <gganji11-AT-naver.com>, "Liam R. Howlett" <liam-AT-infradead.org>, Lorenzo Stoakes <ljs-AT-kernel.org>, Michael Bommarito <michael.bommarito-AT-gmail.com>, Mike Rapoport <rppt-AT-kernel.org>, Peter Xu <peterx-AT-redhat.com>, linux-mm-AT-kvack.org, linux-kernel-AT-vger.kernel.org |
| Archive-link: |
| Article |
From: "Mike Rapoport (Microsoft)" <rppt@kernel.org>
... and two more small fixes.
This applies on top of the current mm-unstable with
"userfaultfd: snapshot VMA state across UFFDIO_COPY retry"
reverted.
v2 changes:
* rename vma_snapshot to mfill_retry_state and related functions,
variables and constants
* drop redundant check for effective ops
* drop vma_uffd_copy_ops()
* restore large comment about MAP_PRIVATE handling and massage other
comments
* new patches:
- guard against bugs that could end up with NULL ops in
__mfill_atomic_pte()
- remove redundant check in vm_uffd_ops()
v1: https://lore.kernel.org/all/20260519052516.3315196-1-rppt...
Mike Rapoport (Microsoft) (3):
userfaultfd: verify VMA state across UFFDIO_COPY retry
userfaultfd: refuse to __mfill_atomic_pte() for unsupported VMAs
userfaultfd: remove redundant check in vm_uffd_ops()
mm/userfaultfd.c | 92 +++++++++++++++++++++++++++++++++++++++++-------
1 file changed, 79 insertions(+), 13 deletions(-)
--
2.53.0
