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Mon, 02 Sep 2024 08:28:01 -0700 (PDT) Date: Mon, 02 Sep 2024 08:28:01 -0700 In-Reply-To: <00000000000087bd88062117d676@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000026b5250621249667@google.com> Subject: Re: [syzbot] [fs?] [mm?] INFO: task hung in page_cache_ra_unbounded (2) From: syzbot To: akpm@linux-foundation.org, davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linma@zju.edu.cn, linux-bluetooth@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: E674240014 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: qg48npxyzgg11omg5qzfad4tczus8eby X-HE-Tag: 1725290882-760232 X-HE-Meta: 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 DPCQwz3A 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 P4ElRSKD GTmObpMG6lckk/0B92wXeO42R/R3DmMDMSFK7XS1H8CKqW/2HcY0Ew575KEhmZ3M/D2dJsjD11yYYwWu7a+Ckj21T/x8tCdga5/jwd27TyJNTiyWTfx6kcJpHUYLqhVNSp0T5UlzXSC5QAhq6wexxO0WBV9Op/yvr2YwzDyvf8iTORPHnSF2xZ9qupEqw8yE X-Bogosity: Ham, tests=bogofilter, spamicity=0.086396, 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 e305509e678b3a4af2b3cfd410f409f7cdaabb52 Author: Lin Ma Date: Sun May 30 13:37:43 2021 +0000 Bluetooth: use correct lock to prevent UAF of hdev object bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16a579eb980000 start commit: 431c1646e1f8 Linux 6.11-rc6 git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=15a579eb980000 console output: https://syzkaller.appspot.com/x/log.txt?x=11a579eb980000 kernel config: https://syzkaller.appspot.com/x/.config?x=660f6eb11f9c7dc5 dashboard link: https://syzkaller.appspot.com/bug?extid=265e1cae90f8fa08f14d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16f8f0fb980000 Reported-by: syzbot+265e1cae90f8fa08f14d@syzkaller.appspotmail.com Fixes: e305509e678b ("Bluetooth: use correct lock to prevent UAF of hdev object") For information about bisection process see: https://goo.gl/tpsmEJ#bisection