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Thu, 22 Feb 2024 21:19:27 -0800 (PST) Received: from google.com ([2401:fa00:8f:203:b194:4f71:568a:eeb0]) by smtp.gmail.com with ESMTPSA id q37-20020a17090a17a800b0029948cb4367sm483617pja.23.2024.02.22.21.19.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Feb 2024 21:19:27 -0800 (PST) Date: Fri, 23 Feb 2024 14:19:23 +0900 From: Sergey Senozhatsky To: Yosry Ahmed Cc: Sergey Senozhatsky , Tetsuo Handa , Johannes Weiner , Nhat Pham , Minchan Kim , linux-mm Subject: Re: [mm/page_alloc or mm/vmscan or mm/zswap] use-after-free in obj_malloc() Message-ID: <20240223051923.GO11472@google.com> References: <20240223044808.GK11472@google.com> <20240223045639.GM11472@google.com> <20240223045845.GN11472@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: A986E140003 X-Stat-Signature: g43d9qoju78i9q7b3etrrmjtm614dzh5 X-Rspam-User: X-HE-Tag: 1708665568-622849 X-HE-Meta: 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 Wwp+qFJR nJogYy4ZOu3oWeXILd8cGFzLktG2ZJXR6Brz2IL6LsyJzBNdN/uYFqAnkSYjhQw5RSsaEQwt7GPai6/4WruSZgUbuEgHzp2bmKobnCqQyBq/7QWqkM0PtN2a8fw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.161930, 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 (24/02/22 21:05), Yosry Ahmed wrote: > > > > These are not in 6.8.0-rc5 anyway, right? > > > > > > I see them in next-20240223, which seems to be 6.8-rc6 (according to > > ^ -rc5 > > > > But they look more or less correct to me, so I'm not blaming those > > patches. We should be protected by pool->look. Bisection would help > > us a lot, I think. > > Andrew picked up those patches in mm-unstable, which is included in > linux-next at some point IIUC, but the patches there don't all end up > in the next rc unless I am misunderstanding something here. These > patches should be headed to v6.9 AFAICT. > > Actually, if I am not mistaken the patches were sent *after* v.6.8-rc5 > was out, and it's not common for non-fixes to make it into rc releases > anyway, right? Oh, sorry, I realized that we talked about different 6.8-rc5. I talked about linux-next, not Linus's tree. You are absolutely right, those patches are not in Linus's 6.8-rc5 and are headed to 6.9, yes.