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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id 00721157ae682-78a7987fb02sm31856247b3.5.2025.11.22.21.19.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 22 Nov 2025 21:19:59 -0800 (PST) Date: Sat, 22 Nov 2025 21:19:48 -0800 (PST) From: Hugh Dickins To: Andrew Morton cc: Deepanshu Kartikey , baolin.wang@linux.alibaba.com, david@redhat.com, muchun.song@linux.dev, osalvador@suse.de, kraxel@redhat.com, airlied@redhat.com, jgg@ziepe.ca, linux-mm@kvack.org, linux-kernel@vger.kernel.org, vivek.kasireddy@intel.com, syzbot+f64019ba229e3a5c411b@syzkaller.appspotmail.com, stable@vger.kernel.org Subject: Re: [PATCH v2] mm/memfd: fix information leak in hugetlb folios In-Reply-To: Message-ID: <250c36cf-6334-4b82-dbd1-5618a24271da@google.com> References: <20251112145034.2320452-1-kartikey406@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D9BE4C000A X-Stat-Signature: wbff66bktex8aohbtxwtgi9zqcry1anr X-Rspam-User: X-HE-Tag: 1763875201-602378 X-HE-Meta: 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 GyPCUC52 cFshc1LvhZtft3nUWnABVtH6Nt9VdVOXrnj78l7InKqCXkXxqiWhHjSrSQPKIXT1NZKMbITRrf3gwWMqEy7YePBf6y+VsIlpc9Tnh0OZWpvvXAykjAamJuSXGXoUt6HIwvowK3xxWFA0Ij4ku+pjRJng27QH7OsuvadZ1wdd4F0UeY80iEI+hw/5P/YUM33k/RnhUF/7V8o5kM076W87eaZ6jRjeOUMA88K/wpD/jlIx2IQ3IUbs4Wkv1xsOnJRDxWCKCgE+iS/07lH5zDzcaKc/iWUx/A0tZRJgu67NFGgti6HuKJo1CMFSSrORnagP1Mf5lNFwOAnSzt36dxZY1T5l75PCPTkFKywk81STIX0X5jdtOLJs/eSGk4EUCHZ+voXu7jaZqDlY+8SN+b/fTYLnvTlxvbj6ux2BXSqSnhgSqutq99b62QiiLVUyiKSS0vpkm X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, 22 Nov 2025, Hugh Dickins wrote: > > Acked-by: Hugh Dickins > > Sorry if you were all waiting on a Ack from me. We're agreed that > the comment above __folio_mark_uptodate() could be deleted, and that > it would be much better if this code can be moved to a shared home > in hugetlb later on; but for now it's more urgent to get this patch > into hotfixes and on to Linus - please Andrew. Ah, it is already there in mm-hotfixes-unstable, thanks; sorry, I somehow just never saw the usual mm-commits mail. Hugh