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Mon, 7 Oct 2024 09:40:39 -0700 (PDT) Date: Mon, 7 Oct 2024 09:40:39 -0700 (PDT) From: "Christoph Lameter (Ampere)" To: Hyeonggon Yoo <42.hyeyoo@gmail.com> cc: Vlastimil Babka , "yuan.gao" , penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, roman.gushchin@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mm/slub: Avoid list corruption when removing a slab from the full list In-Reply-To: <916bea8e-0e79-c561-f8e8-b3c7fa026161@gentwo.org> Message-ID: <006695cb-368c-9afc-80b5-29338e85ab99@gentwo.org> References: <20241007091850.16959-1-yuan.gao@ucloud.cn> <916bea8e-0e79-c561-f8e8-b3c7fa026161@gentwo.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: B6E2040009 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: qrn6u81ezq3ea1aaz653phbeppcppad1 X-HE-Tag: 1728319240-463059 X-HE-Meta: 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 Hwbl12AI bB6R17L5O5I477jqDa6ElDQqUCN2PpmIyGqhY+widexbGOYGmTZHRVEjS1WhFO4gi8qXGNhV3ZJgfvTGzX+HKUj1XZ1fDUI1HVLESw10DjHcgyLjlvWlhQPsqgw/1hUnpw89aVUifvm7g0pXR0snQoXl2siVbQEwhJBymCUmw9MeFNx0mUXAPTMoNIT/lHZp7Ojvq12Lk8LdRrqtKHLocnxjS4DpjvpVNVC6iZzAad6ElRyPHrr+B4Kt+pPQg0hcevHf1O0DEteh18StHjsxMVQU0ZzvpGCyhg6CegfEvOBT5340= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000004, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: list_del() in remove_partial() sets poison values for next/prev so there should no list corruption but a failure showing the poison values. static inline void list_del(struct list_head *entry) { __list_del_entry(entry); entry->next = LIST_POISON1; entry->prev = LIST_POISON2; }