From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8059A340A57 for ; Sat, 10 Oct 2026 05:00:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791608440; cv=none; b=jiMjZ7cZ6tGic1g1f38+H3IJ8utIIjm16QSJLsQSHsI0SZazAP1Gj3Te1fw4iCLQ2QS1NsH68Uy70rT9S0Cc6bUS6bHY9qDcR4BCdEqxU/607f8QRw/1R8o5Zfz8UydCXlDYRHCs36kwf18tADuhK4BikXFKJ43hOjdZI0SPhhs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791608440; c=relaxed/simple; bh=6lbDcEEQzMxUZanUbIXWQQRvNAzNlU06Z/mHfBfNw8I=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=UevHx4talpeaODA5xjERgPrDElXJ7cw06THQDaQdhztg7hiYk+6qfHZL/6aBFz9a1PrnHttzv0Pa4cwnuQwKR5qSkw0lIZyzmlXP7qUTEi+ZjTgFHZTC0AYa2FTB+gyA28Xe8eTasaF4odJChdSe9QdUTqpQqi3GJWNMx+3TSBE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.167.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oi1-f199.google.com with SMTP id 5614622812f47-4c7f887ac6bso709417b6e.3 for ; Fri, 09 Oct 2026 22:00:38 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791608437; x=1792213237; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=us6ScB89JOPz+Y6KklNmPbHFhs0MEllFJihi/ZoHtfw=; b=HGmFaUNzpFjQkWz1c6tPGUJxYwfhiR51VRrXsNo1JxxuLYQWRDObZoD4Dwmnh/UvhG x9+GB4auYmMXfel36Va/hZNBUt70pyTQ9GqLB1rStXRspOoqjA8M/bAI2cOjQbybpqro ZgYkL9MqIwZk0yFl4UBFVq3yYjTRYwiiirx9lEOScTsykaK4zIIS7gRdVFgR987XSZDL TJt4M6q3oYx7GaErzZPhHyLi9qixWvC6D3sxbd7ctafKKKSnlzqyv3DvvGDFNyoMU5M0 m+wxbZFn+HpoQsjciKK6sa2h72PrJjuqPcpRr5pkBlfUzL0WHMT6dC4JRdasbaiRwPTp sj0Q== X-Forwarded-Encrypted: i=1; AKwUvBxia5NRFHEScZWISKyFDMNQDszJDn4jIODa1XfJ3VpQGLFjNZb3CLalAj1H0y2qxvM4nVpcw/scIvvvavc=@vger.kernel.org X-Gm-Message-State: AFq9FYKH1pBYB+zPUIGkWHwQsOmI/cQ4i7MhIjAm13F7ZVVDcb7Kb2s4 X66etl1fRSaeH8a15swK2MrciSQKm/16q8Wf6r3KsmUSSqQH3og2dQ8rEIoTFmnUNuJptGF2Its ZTHXRa51Phcxvn/sdtqsxPHZ1lV5YkooCoYfr2FeatlZSNbIvylokvazt3MM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:c3ee:b0:4e8:92e5:db5b with SMTP id 5614622812f47-50c5b4648camr4475500b6e.54.1791608437351; Fri, 09 Oct 2026 22:00:37 -0700 (PDT) Date: Fri, 09 Oct 2026 22:00:37 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ac9c675.a150a118.27e199.0024.GAE@google.com> Subject: [syzbot] [net?] INFO: trying to register non-static key in neigh_periodic_work From: syzbot To: davem@davemloft.net, edumazet@kernel.org, horms@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 71c3e5409eef Merge remote-tracking branch 'will/for-next/p.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=15ae21c9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c7205f05c11fb4dd dashboard link: https://syzkaller.appspot.com/bug?extid=2f98196f4b99dca2b979 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1305400d580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/20ff6159ce99/disk-71c3e540.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1d6172672705/vmlinux-71c3e540.xz kernel image: https://storage.googleapis.com/syzbot-assets/923d5e083e1b/Image-71c3e540.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2f98196f4b99dca2b979@syzkaller.appspotmail.com INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 UID: 0 PID: 3103 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 Workqueue: events_power_efficient neigh_periodic_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 assign_lock_key+0xcc/0xdc kernel/locking/lockdep.c:1028 register_lock_class+0xf8/0x31c kernel/locking/lockdep.c:1343 __lock_acquire+0x140/0x2b08 kernel/locking/lockdep.c:5162 lock_acquire+0x13c/0x320 kernel/locking/lockdep.c:5942 __raw_write_lock include/linux/rwlock_api_smp.h:229 [inline] _raw_write_lock+0x48/0x60 kernel/locking/spinlock.c:335 neigh_periodic_work+0x3bc/0x9ec net/core/neighbour.c:1004 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 bridge_slave_1: left allmulticast mode bridge_slave_1: left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bridge_slave_0: left allmulticast mode bridge_slave_0: left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state Unable to handle kernel paging request at virtual address dfff800000000009 KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0 [dfff800000000009] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 3103 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 Workqueue: netns cleanup_net pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : qdisc_reset+0xec/0x594 net/sched/sch_generic.c:1078 lr : trace_qdisc_reset include/trace/events/qdisc.h:128 [inline] lr : qdisc_reset+0xdc/0x594 net/sched/sch_generic.c:1076 sp : ffff80009a317510 x29: ffff80009a317520 x28: 1fffe00018cc50ad x27: ffff0000c6628568 x26: 0000000000000003 x25: ffff0000c9624800 x24: ffff0000c6628018 x23: 0000000000000000 x22: dfff800000000000 x21: ffff800088a77ec8 x20: 0000000000000048 x19: ffff0000c9624818 x18: 1fffe00035bd7428 x17: 0000000000000003 x16: ffff800088a77000 x15: ffff800088b27700 x14: ffff0001adeba14c x13: 0000000000000001 x12: 0000000000000004 x11: ffff700013462e98 x10: 0000000000000003 x9 : 0000000000000200 x8 : 0000000000000009 x7 : 0000000000000000 x6 : ffff800084df21d4 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800084def98c x2 : 0000000000000002 x1 : ffff0000cde31d80 x0 : 0000000000000000 Call trace: qdisc_reset+0xec/0x594 net/sched/sch_generic.c:1078 (P) dev_reset_queue+0x10c/0x1f0 include/net/sch_generic.h:756 netdev_for_each_tx_queue include/linux/netdevice.h:2752 [inline] dev_deactivate_many+0x490/0x9d0 net/sched/sch_generic.c:1394 __dev_close_many+0x178/0x648 net/core/dev.c:1782 netif_close_many+0x1d8/0x51c net/core/dev.c:1824 unregister_netdevice_many_notify+0x740/0x1760 net/core/dev.c:12530 unregister_netdevice_many+0x28/0x38 net/core/dev.c:12632 ops_exit_rtnl_list net/core/net_namespace.c:188 [inline] ops_undo_list+0x32c/0x81c net/core/net_namespace.c:249 cleanup_net+0x474/0x6c4 net/core/net_namespace.c:706 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 Code: 14000002 96e12f3e 910122f4 d343fe88 (38766908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 14000002 b 0x8 4: 96e12f3e bl 0xfffffffffb84bcfc 8: 910122f4 add x20, x23, #0x48 c: d343fe88 lsr x8, x20, #3 * 10: 38766908 ldrb w8, [x8, x22] <-- trapping instruction --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup