From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f207.google.com (mail-oi1-f207.google.com [209.85.167.207]) (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 6521A43C05E for ; Tue, 14 Jul 2026 09:07:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.207 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784020057; cv=none; b=mIv2c1h+5E2zx0gwojTW3BL5jxVrAJdmtsL4zaz5RCEKksKhS2hg2JPaw7fSOqla9j4NVibg+w5HBWvpV4PLJiZGsR2b3EMo9h5Vch+NCNwGSh58QiewQHCI34f9efXLORbB6L+MmAbf6AjeXULqgN+cZG0gg5dnNUFpbBvkKEk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784020057; c=relaxed/simple; bh=IxyVm7IcUo+sYsGc1/ouWUkFvePLEebZ32KySG+8Gpc=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=hPBVNVfFUJaMjDO5NLYhYZ5ZJgD66792LeqAjHNbjHJE70zyKScc/bGKPy8tZWv/49JUOeMm0Fa1MsTxFrQrQvrjz4QYdWUk05gapjTs6GxZ/0JlEbWeSokbiyMjA2VyVfjUbh3pfxk3FYiQ8MRRowZkL3IAc9A9EaEf7s+cuh0= 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=209.85.167.207 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-f207.google.com with SMTP id 5614622812f47-4a43d32fa9fso1648226b6e.2 for ; Tue, 14 Jul 2026 02:07:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784020054; x=1784624854; 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=CLaw79NsoRicP9YAsZkAlIoUkA6HQkt0ISaCfQaznWU=; b=TFB4N2GG+mfr+vDUQHFv1zWTGDBN+h6n3VtDO1h/qg2Vjs+cZ/hnvAdqfnernA11HL HikpAezcJz9KLaB9PkeaHCAKRwHUcAIgmcOHOS57n1ps8MlysTHM9PQrzoV7Vsn82+mY PScUt54iysS85h/yKKecVdz+JXiP2daRgVUu3S7K3h23Gk7rFmdi+BXMXHQJQBE1almP oRGqakpQS5vWHUUGXm4mEzCw/9owPFGNGmav6mU8eY3hziKMk78DZSjgKyd9A00c/A/r oiKGsM/pZkx0spTLF3J4gS3EeiXCJm4t4aUWX+YwCan1RjWKMCj/6Qk9/X+NGBktkIcQ AqRw== X-Forwarded-Encrypted: i=1; AFNElJ9fiOdKFZThEy4sp0JlCOgAUj7z6VnnBA+Xi9WepZaWJoxozneNMfjot/nH3ipO2JyLxU5j6uk=@vger.kernel.org X-Gm-Message-State: AOJu0YyS31u0L/QQnJiEmQ04a0/5W6wCeCu4O9fqIHiOrlx/s11pzJJe 2oHim/D1izrKfeOFDO1Sw2p5txA1sILD20mwhIiQhdKs97kV2tj50a4koMbDr4L+popEyac/1bs mq8S8kyxe7M1o4puivp0by/mkqsWRvqc314ZCBY/IiCRINhH6pxie7vmN+u4= Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:2386:b0:495:fa73:2e21 with SMTP id 5614622812f47-4a42b04ed3cmr9179923b6e.33.1784020054266; Tue, 14 Jul 2026 02:07:34 -0700 (PDT) Date: Tue, 14 Jul 2026 02:07:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a55fc56.c90005c7.37d349.001c.GAE@google.com> Subject: [syzbot] [net?] possible deadlock in rtnl_net_dev_lock From: syzbot To: dario.binacchi@amarulasolutions.com, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mailhol@kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: bee763d5f341 Add linux-next specific files for 20260710 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=17d360b9580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c00ea6b66be5f95 dashboard link: https://syzkaller.appspot.com/bug?extid=de610eeef174bd59a8a3 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/34c8f306351e/disk-bee763d5.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d6fb1414f52c/vmlinux-bee763d5.xz kernel image: https://storage.googleapis.com/syzbot-assets/2e7f8585b4c7/bzImage-bee763d5.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+de610eeef174bd59a8a3@syzkaller.appspotmail.com ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Tainted: G L ------------------------------------------------------ kworker/u8:47/12528 is trying to acquire lock: ffff8880517dd070 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2852 [inline] ffff8880517dd070 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock_ops include/net/netdev_lock.h:42 [inline] ffff8880517dd070 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: call_netdevice_unregister_notifiers net/core/dev.c:1917 [inline] ffff8880517dd070 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: call_netdevice_unregister_net_notifiers+0x1e0/0x4c0 net/core/dev.c:1953 but task is already holding lock: ffffffff8f7c1e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] ffffffff8f7c1e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2167 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #6 (rtnl_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] _mutex_lock_killable+0x63/0x1d0 kernel/locking/rtmutex_api.c:599 rtnl_net_lock_killable include/linux/rtnetlink.h:145 [inline] register_netdev+0x18/0x60 net/core/dev.c:11565 slcan_open+0x35f/0x440 drivers/net/can/slcan/slcan-core.c:857 tty_ldisc_open+0xa1/0x100 drivers/tty/tty_ldisc.c:432 tty_set_ldisc+0x365/0x540 drivers/tty/tty_ldisc.c:563 tty_ioctl+0xc36/0xde0 drivers/tty/tty_io.c:2728 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #5 (&tty->ldisc_sem){++++}-{0:0}: __ldsem_down_read_nested+0xb2/0x790 drivers/tty/tty_ldsem.c:300 tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 tty_poll+0x6b/0x170 drivers/tty/tty_io.c:2195 vfs_poll include/linux/poll.h:82 [inline] ep_item_poll fs/eventpoll.c:1328 [inline] ep_insert+0x11ee/0x1830 fs/eventpoll.c:1928 do_epoll_ctl_file+0x8d5/0xf00 fs/eventpoll.c:2677 do_epoll_ctl fs/eventpoll.c:2724 [inline] __do_sys_epoll_ctl fs/eventpoll.c:2741 [inline] __se_sys_epoll_ctl+0x162/0x230 fs/eventpoll.c:2732 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #4 (&ep->mtx){+.+.}-{4:4}: __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578 get_epoll_tfile_raw_ptr+0x86/0x1a0 fs/eventpoll.c:2909 kcmp_epoll_target+0x14f/0x1f0 kernel/kcmp.c:117 __do_sys_kcmp kernel/kcmp.c:207 [inline] __se_sys_kcmp+0x668/0x8f0 kernel/kcmp.c:135 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #3 (&sig->exec_update_lock){++++}-{4:4}: down_read_killable+0xa4/0x220 kernel/locking/rwsem.c:1599 mm_access+0x4d/0x2c0 kernel/fork.c:1409 proc_map_files_lookup+0x3d3/0x6b0 fs/proc/base.c:2340 lookup_open fs/namei.c:4476 [inline] open_last_lookups fs/namei.c:4602 [inline] path_openat+0x112d/0x3850 fs/namei.c:4854 do_file_open+0x23e/0x4a0 fs/namei.c:4886 do_sys_openat2+0x115/0x200 fs/open.c:1368 do_sys_open fs/open.c:1374 [inline] __do_sys_openat fs/open.c:1390 [inline] __se_sys_openat fs/open.c:1385 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1385 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #2 (&sb->s_type->i_mutex_key#11){++++}-{4:4}: down_read+0x97/0x200 kernel/locking/rwsem.c:1574 inode_lock_shared include/linux/fs.h:1039 [inline] lookup_slow+0x46/0x70 fs/namei.c:1935 walk_component fs/namei.c:2282 [inline] lookup_last fs/namei.c:2789 [inline] path_lookupat+0x3f5/0x8c0 fs/namei.c:2813 filename_lookup+0x265/0x5d0 fs/namei.c:2842 kern_path+0x3d/0x150 fs/namei.c:3036 bpf_prog_get_type_path+0xa3/0x270 kernel/bpf/inode.c:642 __bpf_mt_check_path net/netfilter/xt_bpf.c:60 [inline] bpf_mt_check_v1+0x156/0x360 net/netfilter/xt_bpf.c:84 xt_checkentry_match net/netfilter/x_tables.c:543 [inline] xt_check_match+0x602/0xce0 net/netfilter/x_tables.c:576 __nft_match_init+0x66b/0x8c0 net/netfilter/nft_compat.c:546 nft_match_large_init+0xc0/0x150 net/netfilter/nft_compat.c:568 nf_tables_newexpr net/netfilter/nf_tables_api.c:3633 [inline] nf_tables_newrule+0x179e/0x28a0 net/netfilter/nf_tables_api.c:4451 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:524 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:647 [inline] nfnetlink_rcv+0x1291/0x28d0 net/netfilter/nfnetlink.c:665 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7f5/0x990 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:810 __sock_sendmsg net/socket.c:825 [inline] ____sys_sendmsg+0x565/0x870 net/socket.c:2727 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2781 __sys_sendmsg net/socket.c:2813 [inline] __do_sys_sendmsg net/socket.c:2818 [inline] __se_sys_sendmsg net/socket.c:2816 [inline] __x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2816 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&nft_net->commit_mutex){+.+.}-{4:4}: __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578 nf_tables_netdev_event+0xad/0x160 net/netfilter/nft_chain_filter.c:416 call_netdevice_notifier net/core/dev.c:1893 [inline] call_netdevice_register_notifiers net/core/dev.c:1901 [inline] call_netdevice_register_net_notifiers+0x133/0x750 net/core/dev.c:1934 register_netdevice_notifier+0x96/0x160 net/core/dev.c:1990 nft_chain_filter_netdev_init net/netfilter/nft_chain_filter.c:442 [inline] nft_chain_filter_init+0x1d/0x80 net/netfilter/nft_chain_filter.c:468 nf_tables_module_init+0x25/0x100 net/netfilter/nf_tables_api.c:12216 do_one_initcall+0x250/0x870 init/main.c:1357 do_initcall_level+0x10a/0x1a0 init/main.c:1419 do_initcalls+0x59/0xa0 init/main.c:1435 kernel_init_freeable+0x29d/0x3e0 init/main.c:1670 kernel_init+0x22/0x1d0 init/main.c:1560 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #0 (&dev_instance_lock_key#3){+.+.}-{4:4}: check_prev_add kernel/locking/lockdep.c:3181 [inline] check_prevs_add kernel/locking/lockdep.c:3300 [inline] validate_chain kernel/locking/lockdep.c:3924 [inline] __lock_acquire+0x15ff/0x2e40 kernel/locking/lockdep.c:5254 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5906 __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578 netdev_lock include/linux/netdevice.h:2852 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] call_netdevice_unregister_notifiers net/core/dev.c:1917 [inline] call_netdevice_unregister_net_notifiers+0x1e0/0x4c0 net/core/dev.c:1953 __unregister_netdevice_notifier_net net/core/dev.c:2084 [inline] unregister_netdevice_notifier_dev_net+0x159/0x1a0 net/core/dev.c:2214 nsim_destroy+0x105/0x800 drivers/net/netdevsim/netdev.c:1185 __nsim_dev_port_del+0x14e/0x200 drivers/net/netdevsim/dev.c:1547 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1561 [inline] nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1785 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:1038 devlink_reload+0x1c5/0x890 net/devlink/dev.c:462 devlink_pernet_pre_exit+0x1ff/0x420 net/devlink/core.c:578 ops_pre_exit_list net/core/net_namespace.c:161 [inline] ops_undo_list+0x17d/0x8d0 net/core/net_namespace.c:234 cleanup_net+0x575/0x810 net/core/net_namespace.c:702 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379 process_scheduled_works kernel/workqueue.c:3462 [inline] worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 other info that might help us debug this: Chain exists of: &dev_instance_lock_key#3 --> &tty->ldisc_sem --> rtnl_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rtnl_mutex); lock(&tty->ldisc_sem); lock(rtnl_mutex); lock(&dev_instance_lock_key#3); *** DEADLOCK *** locks held by kworker/u8:47/12528: 6, last CPU#1: #0: ffff88801bee0938 ((wq_completion)netns){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #0: ffff88801bee0938 ((wq_completion)netns){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline] #0: ffff88801bee0938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7fd/0x1480 kernel/workqueue.c:3344 #1: ffffc9000473fc60 (net_cleanup_work){+.+.}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline] #1: ffffc9000473fc60 (net_cleanup_work){+.+.}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline] #1: ffffc9000473fc60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7fd/0x1480 kernel/workqueue.c:3344 #2: ffffffff8f7b2b60 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf5/0x810 net/core/net_namespace.c:673 #3: ffff888037bdd160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #3: ffff888037bdd160 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:124 [inline] #3: ffff888037bdd160 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x129/0x420 net/devlink/core.c:575 #4: ffff888038d1e310 (&devlink->lock_key#10){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:308 [inline] #4: ffff888038d1e310 (&devlink->lock_key#10){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:125 [inline] #4: ffff888038d1e310 (&devlink->lock_key#10){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x142/0x420 net/devlink/core.c:575 #5: ffffffff8f7c1e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline] #5: ffffffff8f7c1e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0 net/core/dev.c:2167 stack backtrace: CPU: 1 UID: 0 PID: 12528 Comm: kworker/u8:47 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: netns cleanup_net Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_circular_bug+0x2e2/0x300 kernel/locking/lockdep.c:2059 check_noncircular+0x12f/0x150 kernel/locking/lockdep.c:2191 check_prev_add kernel/locking/lockdep.c:3181 [inline] check_prevs_add kernel/locking/lockdep.c:3300 [inline] validate_chain kernel/locking/lockdep.c:3924 [inline] __lock_acquire+0x15ff/0x2e40 kernel/locking/lockdep.c:5254 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5906 __mutex_lock_common kernel/locking/rtmutex_api.c:559 [inline] mutex_lock_nested+0x5a/0x1d0 kernel/locking/rtmutex_api.c:578 netdev_lock include/linux/netdevice.h:2852 [inline] netdev_lock_ops include/net/netdev_lock.h:42 [inline] call_netdevice_unregister_notifiers net/core/dev.c:1917 [inline] call_netdevice_unregister_net_notifiers+0x1e0/0x4c0 net/core/dev.c:1953 __unregister_netdevice_notifier_net net/core/dev.c:2084 [inline] unregister_netdevice_notifier_dev_net+0x159/0x1a0 net/core/dev.c:2214 nsim_destroy+0x105/0x800 drivers/net/netdevsim/netdev.c:1185 __nsim_dev_port_del+0x14e/0x200 drivers/net/netdevsim/dev.c:1547 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1561 [inline] nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1785 nsim_dev_reload_down+0x8a/0xc0 drivers/net/netdevsim/dev.c:1038 devlink_reload+0x1c5/0x890 net/devlink/dev.c:462 devlink_pernet_pre_exit+0x1ff/0x420 net/devlink/core.c:578 ops_pre_exit_list net/core/net_namespace.c:161 [inline] ops_undo_list+0x17d/0x8d0 net/core/net_namespace.c:234 cleanup_net+0x575/0x810 net/core/net_namespace.c:702 process_one_work+0xaaf/0x1480 kernel/workqueue.c:3379 process_scheduled_works kernel/workqueue.c:3462 [inline] worker_thread+0xb05/0x10d0 kernel/workqueue.c:3543 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 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 bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): Released all slaves hsr_slave_0: left promiscuous mode hsr_slave_1: left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode netdevsim netdevsim6 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim6 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 --- 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 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