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b=RC0dW/1lAhJ+jsD6juY3kSZgjXnUdGcAuLneGLOX4lepKrAIjVqL9AWTGUnpjG+5v 4OMN9fMsnC3uuqWG/ALz8kW/ln2EyMAbiWATu2v9u6/6sZyAoavgaI2hhLAy4YsbAq /CorONRKp3kt22ef4Sf1mH8PKy8aVgMdvqLzIjng= Date: Wed, 25 Mar 2026 17:28:20 -0700 From: Andrew Morton To: Qi Zheng , hannes@cmpxchg.org, hughd@google.com, mhocko@suse.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, david@kernel.org, ljs@kernel.org, ziy@nvidia.com, harry.yoo@oracle.com, yosry.ahmed@linux.dev, imran.f.khan@oracle.com, kamalesh.babulal@oracle.com, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, chenridong@huaweicloud.com, mkoutny@suse.com, hamzamahfooz@linux.microsoft.com, apais@linux.microsoft.com, lance.yang@linux.dev, bhe@redhat.com, usamaarif642@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Qi Zheng Subject: Re: [PATCH v2 0/4] fix unexpected type conversions and potential overflows Message-Id: <20260325172820.95a0ecda646c6c06dfc97ee0@linux-foundation.org> In-Reply-To: <20260325165716.5d63522ba825f25a63e74e3e@linux-foundation.org> References: <20260325165716.5d63522ba825f25a63e74e3e@linux-foundation.org> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: B1D2B12000F X-Stat-Signature: bb5yehpripwhx156hiyinoi1b77agprm X-Rspam-User: X-HE-Tag: 1774484903-45452 X-HE-Meta: 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 25 Mar 2026 16:57:16 -0700 Andrew Morton wrote: > I'm inclined to mark this "don't care". But if we decide to backport > [2/4] ("to prevent potential overflow issues") then we might have a > problem. > > Also, if some downstream person decides to backport [2/4] into their > kernel without [4/4] then they'll have a bad day. > > So perhaps this issue should be addressed within [2/4]? Actually I can trivially do this locally if you like - just turn [4/4] into a -fix patch against [2/4], squash them together later on. Please lmk if you'd like me to do that.