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Tue, 28 May 2024 18:54:02 -0700 (PDT) Date: Tue, 28 May 2024 18:54:02 -0700 In-Reply-To: <0000000000004d74b30619866a7f@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005a9fbd06198e06b4@google.com> Subject: Re: [syzbot] [mm?] UBSAN: shift-out-of-bounds in try_to_shrink_lruvec From: syzbot To: akpm@linux-foundation.org, hannes@cmpxchg.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, riel@surriel.com, roman.gushchin@linux.dev, shakeel.butt@linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: C237A140010 X-Rspam-User: X-Rspamd-Server: rspam12 X-Stat-Signature: ya79rzyqw789gbspbwosn7ycp9g7eoa6 X-HE-Tag: 1716947643-382583 X-HE-Meta: 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 9H48EbVw 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 5RVrolZT qLxjWLhUMk3tb7lSpSRzk8kIoPgtNIsupXJx7qEY4vQhhlu+adwq7zTJLYZlF30f6ONgb5tSeny7NwH5v33+Tn3rU+OHaoUA9LjraC9CJGFwfH1iu19q2zSQqtclHCz0rvHxFIAiNX142cGPD77HPx8h998KHOMO 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: syzbot has bisected this issue to: commit 6be5e186fd655df4b3ba267054de2eaaadc71340 Author: Johannes Weiner Date: Tue May 14 20:26:41 2024 +0000 mm: vmscan: restore incremental cgroup iteration bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=179315c8980000 start commit: 6dc544b66971 Add linux-next specific files for 20240528 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=145315c8980000 console output: https://syzkaller.appspot.com/x/log.txt?x=105315c8980000 kernel config: https://syzkaller.appspot.com/x/.config?x=6a363b35598e573d dashboard link: https://syzkaller.appspot.com/bug?extid=17416257cb95200cba44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e41b72980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f3d2d2980000 Reported-by: syzbot+17416257cb95200cba44@syzkaller.appspotmail.com Fixes: 6be5e186fd65 ("mm: vmscan: restore incremental cgroup iteration") For information about bisection process see: https://goo.gl/tpsmEJ#bisection