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h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=C73AFeeKkCoRVPJGqiRkIGzoxp4r26M9sOXnk+gDOX3bMVNFu/3CbMu6amn/EjjJF JW18d1eHmrQet7XbcdlFI4HZGyzr7wqo7jwYt3PobKeVRcrvSTW1/PENAFzlzbUWD0 5X7ix4EZs1sYPNTV7RG6a3RAx2dR/rcCPyvN6w90= Date: Wed, 21 Feb 2024 11:33:55 +0100 From: Greg KH To: Michal Hocko Cc: "GONG, Ruiqi" , linux-kernel@vger.kernel.org, stable@vger.kernel.org, Johannes Weiner , Roman Gushchin , Shakeel Butt , Muchun Song , cgroups@vger.kernel.org, linux-mm@kvack.org, Wang Weiyang , Xiu Jianfeng Subject: Re: [PATCH stable] memcg: add refcnt for pcpu stock to avoid UAF problem in drain_all_stock() Message-ID: <2024022134-tackiness-earmuff-59ef@gregkh> References: <20240221081801.69764-1-gongruiqi1@huawei.com> <2024022119-bogged-action-c877@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 922D12001A X-Rspam-User: X-Stat-Signature: y7y31kahj99nnhznzafqu5sxxjbc3t5z X-Rspamd-Server: rspam01 X-HE-Tag: 1708511643-125640 X-HE-Meta: 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 fLWJ0dAL 4LQglSs+zJ9/s9rBBHs6+Cz7P0LgFW0C4SGwfy6YSjnyAcg7H4QHdckbIOuEYew4ftvvoFPiM6h8CYZm9ywU4ZkVPopfA41OdTMpXOgiSICOIJ2c9fj/FdWhKfwckEhg8zV8cRbTXaBSWbsu3wjsn0teU9cpuI5m305p5bcgecfyct/SUtUMp4X8/KNU6pIb6sU39iur77+0wCbgOG7YyW6UWp9Lke1Yil3560lqajHBL9+/vmcrdfZz6dgieNvjqHW5qCZFJuxh2I4o+tXKK4IrqzmYm/H3RpqeqGMWmgItXSgVee0uPsybZIOfvAwG7srg2 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 Wed, Feb 21, 2024 at 09:48:05AM +0100, Michal Hocko wrote: > On Wed 21-02-24 09:40:29, Greg KH wrote: > > On Wed, Feb 21, 2024 at 04:18:01PM +0800, GONG, Ruiqi wrote: > > > commit 1a3e1f40962c445b997151a542314f3c6097f8c3 upstream. > > > > > > There was a kernel panic happened on an in-house environment running > > > 3.10, and the same problem was reproduced on 4.19: > > > > Now queued up, thanks! > > Give it some more time Greg, http://lkml.kernel.org/r/ZdW2gMajIw_cUN2-@tiehlicka Oops, now dropped, thanks! greg k-h