From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4EAE5478E2C; Mon, 5 Oct 2026 10:43:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791197036; cv=none; b=YKmhjQKjKfJYgmTTZb+RZOvlT6G4MPshUsmlPfp7B0/cU8Gyh9A3Wa+JbrhYtURT/lmtTvPdUP5DJw0r7VSUnVmTpCLPqvN5JSiq1jaXWKZMAFPFDDJHc9XlrLlWsWkKn++eJ1UmEO4atC2ag/EsifPWgmwIsqEWAjtoCURkF8g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791197036; c=relaxed/simple; bh=+Syy2uvKFEEli46sXTLMeSFqCavE7FeW+ue6Wvoqyw8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=o93OZLUtZXWB9KVnR0br66YtGBxpcK42trQapyI9IXk1VFdHx6mgSEjdBJwNOevap8MFyTErP2np7LG0MYjaLIeX8yiCQ3PKIgIjOssK/1/YBBomewlCBgq8QmO/McCAqqtf7aZBJizpY6sc/a9PB+hWRPJue7NYiw/4tLWUwmM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YxyjbhaK; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YxyjbhaK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6530F1F00899; Mon, 5 Oct 2026 10:43:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791197035; bh=I9YxIdWVKeJd4/bB5ayzuob5ZI8t2MLqGLq4CqLRU6E=; h=Date:Subject:To:Cc:References:From:In-Reply-To; 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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