bridge3543: port 2(bridge_slave_0) entered disabled state device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state bond1 (unregistering): Released all slaves INFO: task kworker/1:3:20459 blocked for more than 140 seconds. Not tainted 4.19.82 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D27680 20459 2 0x80000000 Workqueue: events switchdev_deferred_process_work Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:150 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task kworker/0:11:10450 blocked for more than 140 seconds. Not tainted 4.19.82 #0 kobject: 'rx-0' (00000000c3a58e9d): kobject_cleanup, parent 00000000895bf950 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:11 D27008 10450 2 0x80000000 Workqueue: events linkwatch_event Call Trace: kobject: 'rx-0' (00000000c3a58e9d): auto cleanup 'remove' event context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'rx-0' (00000000c3a58e9d): kobject_uevent_env kobject: 'rx-0' (00000000c3a58e9d): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000c3a58e9d): auto cleanup kobject_del schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'rx-0' (00000000c3a58e9d): calling ktype release schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'rx-0': free name __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'tx-0' (00000000ee8b7a51): kobject_cleanup, parent 00000000895bf950 kobject: 'tx-0' (00000000ee8b7a51): auto cleanup 'remove' event kobject: 'tx-0' (00000000ee8b7a51): kobject_uevent_env kobject: 'tx-0' (00000000ee8b7a51): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000ee8b7a51): auto cleanup kobject_del kobject: 'tx-0' (00000000ee8b7a51): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000895bf950): kobject_cleanup, parent (null) mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'queues' (00000000895bf950): calling ktype release kobject: 'queues' (00000000895bf950): kset_release rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: 'queues': free name linkwatch_event+0xf/0x70 net/core/link_watch.c:236 kobject: 'bridge229' (000000008b94111f): kobject_uevent_env process_one_work+0x989/0x1750 kernel/workqueue.c:2153 kobject: 'bridge229' (000000008b94111f): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'batman_adv' (000000005c759def): kobject_uevent_env kobject: 'batman_adv' (000000005c759def): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (000000005c759def): kobject_cleanup, parent (null) kobject: 'batman_adv' (000000005c759def): calling ktype release worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kobject: (000000005c759def): dynamic_kobj_release kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'batman_adv': free name ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 INFO: task syz-executor.4:19178 blocked for more than 140 seconds. Not tainted 4.19.82 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D24152 19178 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 schedule+0x92/0x1c0 kernel/sched/core.c:3559 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4765 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 __sys_sendto+0x262/0x380 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1795 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413f13 Code: 00 48 89 d6 f3 a6 75 0c 48 c7 00 a0 3f 41 00 e9 3b ff ff ff bf a4 30 44 00 b9 11 00 00 00 48 89 d6 f3 a6 75 0c 48 c7 00 c0 3f <41> 00 e9 1e ff ff ff bf b5 30 44 00 b9 18 00 00 00 48 89 d6 f3 a6 RSP: 002b:00007ffd93dc28b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000413f13 RDX: 0000000000000068 RSI: 0000000000a71df0 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd93dc28c0 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000003 R14: 00007ffd93dc2a30 R15: 00000000004bf1a0 Showing all locks held in the system: kobject: 'rx-0' (0000000051440db7): kobject_cleanup, parent 00000000e88d1a93 7 locks held by kworker/u4:3/144: 1 lock held by khungtaskd/1037: kobject: 'rx-0' (0000000051440db7): auto cleanup 'remove' event #0: 00000000b473a96a (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 kobject: 'rx-0' (0000000051440db7): kobject_uevent_env 1 lock held by rsyslogd/7414: kobject: 'rx-0' (0000000051440db7): kobject_uevent_env: uevent_suppress caused the event to drop! #0: 0000000003fecad7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767 kobject: 'rx-0' (0000000051440db7): auto cleanup kobject_del 2 locks held by getty/7536: #0: 00000000fc8cab2c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'rx-0' (0000000051440db7): calling ktype release #1: 0000000024d3ecf0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'rx-0': free name 2 locks held by getty/7537: kobject: 'tx-0' (00000000b9fa6e23): kobject_cleanup, parent 00000000e88d1a93 #0: 000000002cad2b26 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'tx-0' (00000000b9fa6e23): auto cleanup 'remove' event #1: 000000004b4b8c3f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'tx-0' (00000000b9fa6e23): kobject_uevent_env 2 locks held by getty/7538: kobject: 'tx-0' (00000000b9fa6e23): kobject_uevent_env: uevent_suppress caused the event to drop! #0: 000000000897a727 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000001fcc23e6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7539: #0: kobject: 'tx-0' (00000000b9fa6e23): auto cleanup kobject_del 00000000846a1372 kobject: 'tx-0' (00000000b9fa6e23): calling ktype release ( kobject: 'tx-0': free name &tty->ldisc_sem kobject: 'queues' (00000000e88d1a93): kobject_cleanup, parent (null) ){++++} kobject: 'queues' (00000000e88d1a93): calling ktype release , at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000a37838e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7540: #0: 000000004a375099 (&tty->ldisc_sem){++++} kobject: 'queues' (00000000e88d1a93): kset_release , at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'queues': free name #1: kobject: 'bridge228' (00000000c1ceed4d): kobject_uevent_env 00000000abb4320d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7541: kobject: 'bridge228' (00000000c1ceed4d): kobject_uevent_env: uevent_suppress caused the event to drop! #0: 00000000028b5e0e kobject: 'batman_adv' (000000008e072d1b): kobject_uevent_env ( kobject: 'batman_adv' (000000008e072d1b): kobject_uevent_env: filter function caused the event to drop! &tty->ldisc_sem kobject: 'batman_adv' (000000008e072d1b): kobject_cleanup, parent (null) ){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'batman_adv' (000000008e072d1b): calling ktype release #1: kobject: (000000008e072d1b): dynamic_kobj_release 000000009baa1c6a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'batman_adv': free name 2 locks held by getty/7542: #0: 000000003b0a61b3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000c7a7cd32 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 3 locks held by kworker/1:3/20459: #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000e1bbc8bc (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000afe93f00 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 3 locks held by kworker/0:11/10450: #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000599191fb ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000c20e50ad ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000afe93f00 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 3 locks held by kworker/1:21/6480: #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000307ffc3d ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000789f0bd7 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000afe93f00 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 1 lock held by syz-executor.4/19178: #0: 00000000afe93f00 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000afe93f00 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1037 Comm: khungtaskd Not tainted 4.19.82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'rx-0' (000000000f852b54): kobject_cleanup, parent 00000000fd6ee754 Call Trace: kobject: 'rx-0' (000000000f852b54): auto cleanup 'remove' event __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 kobject: 'rx-0' (000000000f852b54): kobject_uevent_env nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 kobject: 'rx-0' (000000000f852b54): kobject_uevent_env: uevent_suppress caused the event to drop! arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:287 kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'rx-0' (000000000f852b54): auto cleanup kobject_del ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kobject: 'rx-0' (000000000f852b54): calling ktype release Sending NMI from CPU 0 to CPUs 1: kobject: 'rx-0': free name NMI backtrace for cpu 1 CPU: 1 PID: 144 Comm: kworker/u4:3 Not tainted 4.19.82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:io_serial_in+0x6b/0x90 drivers/tty/serial/8250/8250_port.c:450 Code: e1 00 00 00 49 8d 7c 24 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 17 41 03 5c 24 38 89 da ec <5b> 0f b6 c0 41 5c 5d c3 e8 58 4a 35 fe eb c2 e8 b1 4a 35 fe eb e2 RSP: 0018:ffff8880a944f4a8 EFLAGS: 00000002 RAX: dffffc0000000020 RBX: 00000000000003fd RCX: 0000000000000000 RDX: 00000000000003fd RSI: ffffffff836c13d1 RDI: ffffffff8ad86ef8 RBP: ffff8880a944f4b8 R08: ffff8880a9974040 R09: fffffbfff15b0dd9 R10: fffffbfff15b0dd8 R11: ffffffff8ad86ec3 R12: ffffffff8ad86ec0 R13: 0000000000000020 R14: 0000000000000000 R15: fffffbfff15b0de1 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000009f9f8000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_in drivers/tty/serial/8250/8250.h:111 [inline] wait_for_xmitr+0xa1/0x230 drivers/tty/serial/8250/8250_port.c:2028 serial8250_console_putchar+0x1f/0x60 drivers/tty/serial/8250/8250_port.c:3199 uart_console_write+0x54/0x110 drivers/tty/serial/serial_core.c:1884 serial8250_console_write+0x638/0x9f0 drivers/tty/serial/8250/8250_port.c:3265 univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590 call_console_drivers kernel/printk/printk.c:1729 [inline] console_unlock+0xbde/0x10b0 kernel/printk/printk.c:2410 vprintk_emit+0x238/0x690 kernel/printk/printk.c:1927 vprintk_default+0x28/0x30 kernel/printk/printk.c:1968 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2001 kobject_cleanup lib/kobject.c:667 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold+0x2ab/0x2e6 lib/kobject.c:708 net_rx_queue_update_kobjects+0x361/0x480 net/core/net-sysfs.c:979 remove_queue_kobjects net/core/net-sysfs.c:1567 [inline] netdev_unregister_kobject+0x155/0x1f0 net/core/net-sysfs.c:1718 rollback_registered_many+0x6bb/0xda0 net/core/dev.c:8029 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9115 unregister_netdevice_many net/core/dev.c:9114 [inline] default_device_exit_batch+0x34e/0x410 net/core/dev.c:9586 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156 cleanup_net+0x3fb/0x960 net/core/net_namespace.c:552 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415