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Wed, 21 Feb 2024 08:48:05 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id i6bxL8W41WXwKwAAD6G6ig (envelope-from ); Wed, 21 Feb 2024 08:48:05 +0000 Date: Wed, 21 Feb 2024 09:48:05 +0100 From: Michal Hocko To: Greg KH 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: 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: <2024022119-bogged-action-c877@gregkh> X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: AD1A44000A X-Stat-Signature: x6zw8mcgt5xfjug578u8w4h4k3dbpnxm X-Rspam-User: X-HE-Tag: 1708505287-613713 X-HE-Meta: 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 BLxRSuyK tiXjMk0TfizAQxePzFYffoJ2QnwGd2Uba1Y2/rpBozVck9w2UXH0y1JZprVh/Z8XDRBaAuucg1SMPf5MP+ZgdqCBrjKxpdJNuv74ei8teOgkshlI9kPUq4wpM1WWFcnRgh1vTVnyw+npwUq2Wi0DFUagkC61BI8dilCSStYe3IUGl4mLRs5OSGuIKOnYWMQJ4E9OB+iHWdYIhhw0QCXdTzTnAJIdtrGEDFaQpXB/19M7DCKfd6r/JH4qONHWM0cI/Isbu5Zd2ywVa3BuRZtF5TJpdoolRooBDbm4Edjr0hzRYPNLaT9mE4AgkgCaRGO+N6XGI X-Bogosity: Ham, tests=bogofilter, spamicity=0.000997, 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 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 -- Michal Hocko SUSE Labs