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Wed, 20 Mar 2024 07:20:04 -0700 (PDT) Date: Wed, 20 Mar 2024 07:20:04 -0700 In-Reply-To: <000000000000adb08b061413919e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007866bb0614184925@google.com> Subject: Re: [syzbot] [bpf?] possible deadlock in trie_delete_elem From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, eddyz87@gmail.com, elic@nvidia.com, haoluo@google.com, hdanton@sina.com, jasowang@redhat.com, john.fastabend@gmail.com, jolsa@kernel.org, kafai@fb.com, kpsingh@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, mst@redhat.com, netdev@vger.kernel.org, parav@nvidia.com, sdf@google.com, song@kernel.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit a3c06ae158dd6fa8336157c31d9234689d068d02 Author: Parav Pandit Date: Tue Jan 5 10:32:03 2021 +0000 vdpa_sim_net: Add support for user supported devices bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1626def1180000 start commit: f6e922365faf xsk: Don't assume metadata is always requeste.. git tree: bpf final oops: https://syzkaller.appspot.com/x/report.txt?x=1526def1180000 console output: https://syzkaller.appspot.com/x/log.txt?x=1126def1180000 kernel config: https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440 dashboard link: https://syzkaller.appspot.com/bug?extid=9d95beb2a3c260622518 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14115c6e180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=124fd231180000 Reported-by: syzbot+9d95beb2a3c260622518@syzkaller.appspotmail.com Fixes: a3c06ae158dd ("vdpa_sim_net: Add support for user supported devices") For information about bisection process see: https://goo.gl/tpsmEJ#bisection