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 C65324119E8 for ; Thu, 30 Jul 2026 13:07:03 +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=1785416824; cv=none; b=NfJN6qh6/usgM1e2xv0e4j2qms/LcoY/kTh2GFGkM0ILVla5e4bot0CwbF/m7b+6FTqSZaOdIiNA8Zs0bLmHHz1G4ve30WhQS4rMlY4KpxPstfybvwsBLagD/42WZoZ20/Tsy0npIitZk+e/s/HJeNJK8mrvwQz1bfvcFax6usI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785416824; c=relaxed/simple; bh=DmDarjgmGKnainj/lz2bJ4FhrR0Af0knga2eOLUX1u8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=DAmLIWMmd/V0Cm35TQC2Xf39aw3U+LeBYLgXT54snaSgmbIyJ6Zu15l/RIMUemyNEzhVe7aqTnmEUfJ/kq1OwlB1pfZ3LgvJL0zrT8/Rv3WqbW0S7mslKyLgLlWAMf1cJMBr4wk42hQKz8WksIZSH369j4Ru3+lyug1XVM4lbtw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eaaC2kCz; 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="eaaC2kCz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97BAB1F000E9; Thu, 30 Jul 2026 13:07:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785416823; bh=65J9qMpM5zpfwuBByrCM49o/mlX9umE20iAK+xW9lbo=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=eaaC2kCz6ssFAZ99ZNek0I3JHC185BNyzr5CO3G1TPQfycwOC6k3XfVpIGU+G/cLg TVP/HkX2Qxhn3CB0OlWyEmvtdWQWTfiaTMZiILg3ufr0AEQF5NlYHUYmoazUQyr/L7 fDSE38wVCX1k/cIZUa/zzgHSkyxXsiNMW1/rXJkf8GcsTmV4lgCK0RRh15LCtYdc5M iqUnoN7sZVjWOd5cFrD3xTBBdAPc95/qhjspeuOqpAX9YxKfgP/ZuW4pYZygkaiziX mpwZkEYHuVDblSu7nscuiccTFTfyOxaEtROZDIfdblHsxts6z6y+IDGRkMKMZJNzMZ 2tvw9UGLSEkDA== Message-ID: <7f60a20f-7293-489b-8539-847fa1b96789@kernel.org> Date: Thu, 30 Jul 2026 15:07:00 +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] mm: use proper PTE accessor in move_ptes() To: Alexander Gordeev , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Pu Lehui References: <20260720141633.501799-1-agordeev@linux.ibm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/20/26 16:16, Alexander Gordeev wrote: > Follow the pattern established by commit c33c794828f2 > ("mm: ptep_get() conversion") and use the proper PTE > accessor instead of a direct pointer dereference. > > Fixes: b36b701bbcd9 ("mm: expose abnormal new_pte during move_ptes") > Signed-off-by: Alexander Gordeev > --- > mm/mremap.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/mremap.c b/mm/mremap.c > index 0dfe3de39ccc..e99b19a9850b 100644 > --- a/mm/mremap.c > +++ b/mm/mremap.c > @@ -264,7 +264,7 @@ static int move_ptes(struct pagetable_move_control *pmc, > > for (; old_addr < old_end; old_ptep += nr_ptes, old_addr += nr_ptes * PAGE_SIZE, > new_ptep += nr_ptes, new_addr += nr_ptes * PAGE_SIZE) { > - VM_WARN_ON_ONCE(!pte_none(*new_ptep)); > + VM_WARN_ON_ONCE(!pte_none(ptep_get(new_ptep))); > > nr_ptes = 1; > max_nr_ptes = (old_end - old_addr) >> PAGE_SHIFT; Acked-by: David Hildenbrand (Arm) -- Cheers, David