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AJvYcCUa6/ClCfwaHBenGAM+Qe1/87shxoua60ByiuHe4x6E1Zxmw4Vc3qBe1kQL1TjsoxIWGBevlMuopJFL1lw=@vger.kernel.org X-Gm-Message-State: AOJu0Yx43jI89oG0NpnlnAhsBiC7WJnFlF9/dETq7BSs0Cogj3EeYoPp 5YXz7NkxMWhqzRbQacSkQBUKj/zs8h860tlfF2ob+BBSNIsnDF4twjyD5Qyc3nrV4FN2ub9Kbvq 61rJn5pOJhsXa4/m5izumpo62vEJearCfh89IVC2L4cFQGUzWpJA9AA7rFnk= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:820:b0:67b:b33c:48d7 with SMTP id 006d021491bc7-67bb33c4a70mr483102eaf.65.1772981781716; Sun, 08 Mar 2026 07:56:21 -0700 (PDT) Date: Sun, 08 Mar 2026 07:56:21 -0700 In-Reply-To: <66f49736.050a0220.211276.0036.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69ad8e15.050a0220.310d8.000d.GAE@google.com> Subject: Re: [syzbot] [wireguard?] INFO: task hung in wg_netns_pre_exit (5) From: syzbot To: Jason@zx2c4.com, andrew+netdev@lunn.ch, andrew@lunn.ch, andrii@kernel.org, ast@kernel.org, bp@alien8.de, dave.hansen@linux.intel.com, davem@davemloft.net, edumazet@google.com, hpa@zytor.com, jason@zx2c4.com, kuba@kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, netdev@vger.kernel.org, pabeni@redhat.com, sdf@google.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, wireguard@lists.zx2c4.com, x86@kernel.org Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: c113d5e32678 Merge branch 'net-spacemit-a-few-error-handli.. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=13a4875a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=779072223d02a312 dashboard link: https://syzkaller.appspot.com/bug?extid=f2fbf7478a35a94c8b7c compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10cf3fe6580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16b5c8ba580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a1a0aa684791/disk-c113d5e3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6d0461aed5ba/vmlinux-c113d5e3.xz kernel image: https://storage.googleapis.com/syzbot-assets/05b26502bb1f/bzImage-c113d5e3.xz The issue was bisected to: commit d4dfc5700e867b22ab94f960f9a9972696a637d5 Author: Andrii Nakryiko Date: Tue Mar 19 23:38:49 2024 +0000 bpf: pass whole link instead of prog when triggering raw tracepoint bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17ccbc58580000 final oops: https://syzkaller.appspot.com/x/report.txt?x=142cbc58580000 console output: https://syzkaller.appspot.com/x/log.txt?x=102cbc58580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f2fbf7478a35a94c8b7c@syzkaller.appspotmail.com Fixes: d4dfc5700e86 ("bpf: pass whole link instead of prog when triggering raw tracepoint") INFO: task kworker/u8:7:1016 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u8:7 state:D stack:25664 pid:1016 tgid:1016 ppid:2 task_flags:0x4208060 flags:0x00080000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x15dd/0x52d0 kernel/sched/core.c:6908 __schedule_loop kernel/sched/core.c:6990 [inline] schedule+0x164/0x360 kernel/sched/core.c:7005 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7062 __mutex_lock_common kernel/locking/mutex.c:692 [inline] __mutex_lock+0x7fe/0x1300 kernel/locking/mutex.c:776 wg_netns_pre_exit+0x1c/0x200 drivers/net/wireguard/device.c:419 ops_pre_exit_list net/core/net_namespace.c:161 [inline] ops_undo_list+0x187/0x940 net/core/net_namespace.c:234 cleanup_net+0x56b/0x800 net/core/net_namespace.c:704 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.