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From: Roman Gushchin To: Qi Zheng Cc: syzbot , akpm@linux-foundation.org, david@fromorbit.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, muchun.song@linux.dev, syzkaller-bugs@googlegroups.com, zhengqi.arch@bytedance.com, shakeel.butt@linux.dev, Johannes Weiner Subject: Re: [syzbot] [mm?] UBSAN: shift-out-of-bounds in do_shrink_slab Message-ID: References: <0000000000003051770619cec4f8@google.com> <9a7718e0-e30b-4b87-a0ed-dfcea389eaed@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9a7718e0-e30b-4b87-a0ed-dfcea389eaed@gmail.com> X-Migadu-Flow: FLOW_OUT X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 5EE4B1C0003 X-Rspam-User: X-Stat-Signature: brhotdyer6kbj5f8kdqhuf655b3su41r X-HE-Tag: 1717442586-906157 X-HE-Meta: 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 QQrvCfy5 0iG2FSPMu203I+ldsFkZcIqzcaHLYCAlObelPMUICVSHtzp2PWeK5kp+HAtj0HrpSiOdb7mqoZyBo6ddVDFf2RbTyV2vMGZUX1UweGjLwtpowFtZ+wN0nil6dsLZVk3CdVnYB3Q0i3Gvg/P/xzAVw7vkWz7LhMDxcIv3iHv0rgY0SU2qt5+wNjtD21OW+Rly1kslPTtXxswLA4bp2LxsAzQ4ETO6pdMgifl8FODPDbfxPxHMQQRx2pcpxo4QlnLQqVPklE33UqzYPQl+prI0sWvHa7Q== 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 Mon, Jun 03, 2024 at 11:25:42AM +0800, Qi Zheng wrote: > Hi, > > I think this bug was introduced by commit 6be5e186fd65 > ("mm: vmscan: restore incremental cgroup iteration"), and > can be fixed by commit 9c8805439853 ("mm: vmscan: reset sc->priority on > retry"). I'm almost sure it's the same issue. Thanks