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b=YxyjbhaKV4J3KWq5yAbCj043IUW/HILXjLF0F3kkPCQ2WaUvIjK1eq76i4d4auCLp /KY97mHjSMrICJPPlZd+0gIWHlBgtkFYBX2OoKJwf9/LP0Qe5Ph+XThvZ5E+h0iSqK Cscwr0iirEuj04JnGdZsrnY0ROtyRGzUeLrCqG80YHmMsLm+pk0DTUxr5O1tWwS2SP VQA5MkeLjX5LRrWHE3lasxUoRzxmdTB9IROC3KXUwv1kzS5QYGNe/i2V5H21pV2fpc vVOsRAom5vq9ZevdHDyTHCPbeSp2a/sxNECVbqAGEBjIsUE+TLzx0TD+K2xZsxwGRz A2l/wGOuFT4cg== Message-ID: <4a24f7b1-65f7-4947-a325-7c9e9f642f2a@kernel.org> Date: Mon, 5 Oct 2026 12:43:48 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/2] selftests/mm: add tests for UFFDIO_MOVE of a uffd-protected swap entry To: Donggeun Yoo , akpm@linux-foundation.org, rppt@kernel.org Cc: peterx@redhat.com, surenb@google.com, aarcange@redhat.com, ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, mhocko@suse.com, shuah@kernel.org, kas@kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261003103030.63380-1-donggeunyoo.kernel@gmail.com> <20261003103030.63380-3-donggeunyoo.kernel@gmail.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 25ECF80008 X-Rspam-User: X-Stat-Signature: 31y19kzbp9ih3nedxhdaepo3d9jqxjc5 X-HE-Tag: 1791197035-568109 X-HE-Meta: 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 gXcIhRS6 WCZw/N8I/FiP6EDxja+18uOzhl4GwRA6lCGD81LmYjrX6YtZefl/fXBsT8xyhNR7zXeaxVk3/n5NYbWjtlXXls90Yq0xqwizu6ciPxBzjOv86qSSFCNpyfqxThp5BvzyxeTXv9z4Y9aRCad47NhbZsc+AjKDY+R/h2SFvZgSSbHQnkV6gLQXMCM90QTsiCBqCoIrLrL9Qu3SW4pRXuHBb/uXg4Vx1oF0DjF37plhOw0UeLg6TjrIwJPv7LMqZHSjnQAyrk+wU+pjTqjwF10/+z1IUj+krSxa0KsqSbnTPwEd4kZ8MZ2RZN4lh/Wu29WGNUfNMYbsCmN0HdWbHm9BE5dcO0s+mi+WqHzAM03eqcpy1E0P04qa7t8WI6Wy+xF4ulGHIKWBZ3ZOVNJdqQKZNJEpeNb6h+Jsmzv58AhHSSN6yQSw= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 10/3/26 12:30, Donggeun Yoo wrote: > Move a swapped-out page out of a write-protected or RWP-protected area into > a destination registered for missing faults only, and read pagemap bit 57 > at the destination. The destination was never protected, so the bit must > be clear. > > Assisted-by: LLM > Signed-off-by: Donggeun Yoo > --- > tools/testing/selftests/mm/uffd-unit-tests.c | 84 ++++++++++++++++++++ The CI complains as reply to this patch: ... Running userfaultfd(2) test ✗ userfaultfd(2) tests failed Running VMA merge test # # Totals: pass:27 fail:0 xfail:0 xpass:0 skip:0 error:0 # SUMMARY: PASS=1 SKIP=0 FAIL=0 ✓ VMA merge tests passed Running vmalloc test # SUMMARY: PASS=1 SKIP=0 FAIL=0 ✓ vmalloc tests passed ========================================== ✗ userfaultfd(2) test failed: # not ok 43 minor-collapse on shmem ------------------------------------------ Didn't look into the details / trying to reproduce. -- Cheers, David