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Thu, 07 Mar 2024 01:22:01 -0800 (PST) Date: Thu, 07 Mar 2024 01:22:01 -0800 In-Reply-To: <0000000000009752a005fdc2d114@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a4bb3506130e9bc5@google.com> Subject: Re: [syzbot] [usb] INFO: rcu detected stall in newfstatat (3) From: syzbot To: brauner@kernel.org, davem@davemloft.net, edumazet@google.com, gregkh@linuxfoundation.org, jack@suse.cz, jiri@nvidia.com, jmorris@namei.org, kuba@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-security-module@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, netdev@vger.kernel.org, oneukum@suse.com, pabeni@redhat.com, paul@paul-moore.com, penguin-kernel@i-love.sakura.ne.jp, sean@mess.org, serge@hallyn.com, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com, takedakn@nttdata.co.jp, tomoyo-dev-en-owner@lists.osdn.me, tomoyo-dev-en@lists.osdn.me, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit c2368b19807affd7621f7c4638cd2e17fec13021 Author: Jiri Pirko Date: Fri Jul 29 07:10:35 2022 +0000 net: devlink: introduce "unregistering" mark and use it during devlinks iteration bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14dc6736180000 start commit: 29cd507cbec2 Merge tag 'integrity-v6.8-fix' of git://git.k.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=16dc6736180000 console output: https://syzkaller.appspot.com/x/log.txt?x=12dc6736180000 kernel config: https://syzkaller.appspot.com/x/.config?x=70429b75d4a1a401 dashboard link: https://syzkaller.appspot.com/bug?extid=96127c74434e19e4609d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11767d61180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15f691a6180000 Reported-by: syzbot+96127c74434e19e4609d@syzkaller.appspotmail.com Fixes: c2368b19807a ("net: devlink: introduce "unregistering" mark and use it during devlinks iteration") For information about bisection process see: https://goo.gl/tpsmEJ#bisection