team0: Port device team_slave_1 added IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state INFO: task kworker/1:3:7535 blocked for more than 140 seconds. Not tainted 4.19.86-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:3 D26368 7535 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/1:2:19113 blocked for more than 140 seconds. kobject: 'rx-0' (000000006bd180f5): kobject_cleanup, parent 000000002ac89cb4 Not tainted 4.19.86-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'rx-0' (000000006bd180f5): auto cleanup 'remove' event kworker/1:2 D27624 19113 2 0x80000000 Workqueue: events linkwatch_event kobject: 'rx-0' (000000006bd180f5): kobject_uevent_env Call Trace: kobject: 'rx-0' (000000006bd180f5): kobject_uevent_env: uevent_suppress caused the event to drop! context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'rx-0' (000000006bd180f5): auto cleanup kobject_del schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'rx-0' (000000006bd180f5): 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' (00000000c51e39e5): kobject_cleanup, parent 000000002ac89cb4 kobject: 'tx-0' (00000000c51e39e5): auto cleanup 'remove' event kobject: 'tx-0' (00000000c51e39e5): kobject_uevent_env mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 linkwatch_event+0xf/0x70 net/core/link_watch.c:236 process_one_work+0x989/0x1750 kernel/workqueue.c:2153 kobject: 'tx-0' (00000000c51e39e5): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'tx-0' (00000000c51e39e5): auto cleanup kobject_del kobject: 'tx-0' (00000000c51e39e5): calling ktype release worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'tx-0': free name ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kobject: 'queues' (000000002ac89cb4): kobject_cleanup, parent (null) INFO: task syz-executor.1:21634 blocked for more than 140 seconds. kobject: 'queues' (000000002ac89cb4): calling ktype release Not tainted 4.19.86-syzkaller #0 kobject: 'queues' (000000002ac89cb4): kset_release "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'queues': free name syz-executor.1 D kobject: 'bridge1232' (00000000f706244d): kobject_uevent_env 24152 21634 1 0x00000004 kobject: 'bridge1232' (00000000f706244d): kobject_uevent_env: uevent_suppress caused the event to drop! Call Trace: kobject: 'batman_adv' (000000000b2615e6): kobject_uevent_env context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'batman_adv' (000000000b2615e6): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (000000000b2615e6): kobject_cleanup, parent (null) kobject: 'batman_adv' (000000000b2615e6): calling ktype release schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: (000000000b2615e6): dynamic_kobj_release schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'batman_adv': free name __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: 0033:0x414343 Code: 00 48 89 d6 f3 a6 75 0c 48 c7 00 30 41 41 00 e9 3b ff ff ff 48 83 ec 08 31 c0 48 89 d6 bf 30 31 44 00 e8 f0 cc 00 00 b8 14 fc ff 48 83 c4 08 c3 66 0f 1f 44 00 00 41 54 55 53 48 89 fb 48 83 RSP: 002b:00007ffda8bd97d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414343 RDX: 0000000000000020 RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffda8bd97e0 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 Showing all locks held in the system: 1 lock held by khungtaskd/1039: #0: 00000000fdbe45e5 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 2 locks held by getty/7486: #0: 00000000047bc721 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000eb4a89f7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7487: #0: 00000000b54a3e4c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000007b1ddd35 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7488: #0: 00000000a3c468b0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000a9fd9d5f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7489: #0: 000000008a601d72 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000002a8247af (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7490: #0: 0000000050cbd543 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000004b37b495 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7491: #0: 000000001fd027b6 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000c08dbe95 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7492: #0: 000000000b567680 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000005662ff76 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 3 locks held by kworker/1:3/7535: #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 000000000a700737 (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 4 locks held by kworker/u4:4/5031: #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 0000000077ff69cc ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 0000000070f7c4f6 (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000542ff976 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x970 net/core/net_namespace.c:520 #3: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 3 locks held by kworker/1:2/19113: #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000bf4af6dc ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000fec85688 ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 1 lock held by syz-executor.1/21634: #0: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 3 locks held by kworker/1:0/21640: #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000009edad356 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000a2f1bde4 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 00000000c0d355b9 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 ============================================= kobject: 'rx-0' (0000000061082fac): kobject_cleanup, parent 000000000c4b033e NMI backtrace for cpu 0 CPU: 0 PID: 1039 Comm: khungtaskd Not tainted 4.19.86-syzkaller #0 kobject: 'rx-0' (0000000061082fac): auto cleanup 'remove' event Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: kobject: 'rx-0' (0000000061082fac): kobject_uevent_env __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62 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' (0000000061082fac): kobject_uevent_env: uevent_suppress caused the event to drop! ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: kobject: 'rx-0' (0000000061082fac): auto cleanup kobject_del NMI backtrace for cpu 1 CPU: 1 PID: 5031 Comm: kworker/u4:4 Not tainted 4.19.86-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:__sanitizer_cov_trace_switch+0x3c/0x80 kernel/kcov.c:223 Code: 08 48 83 f8 20 74 55 77 3a 48 83 f8 08 74 46 48 83 f8 10 75 27 bf 03 00 00 00 4d 8b 2c 24 31 db 4d 85 ed 74 17 49 8b 74 dc 10 <48> 83 c3 01 48 8b 4d 08 e8 47 fe ff ff 49 39 dd 75 e9 5b 41 5c 41 RSP: 0018:ffff88804fccf428 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000006 RCX: ffffffff86ef9ae9 RDX: 0000000000000009 RSI: 000000000000000e RDI: 0000000000000001 RBP: ffff88804fccf440 R08: ffff88808b436200 R09: fffffbfff10f2949 R10: fffffbfff10f2948 R11: ffffffff88794a43 R12: ffffffff87fd7b80 R13: 000000000000000a R14: 0000000000000009 R15: ffff88804fccf500 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c4300f9ea0 CR3: 00000000912be000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vsnprintf+0xba9/0x19a0 lib/vsprintf.c:2321 snprintf+0xbb/0xf0 lib/vsprintf.c:2426 print_time kernel/printk/printk.c:1234 [inline] print_prefix+0x284/0x3f0 kernel/printk/printk.c:1259 msg_print_text+0x83/0x1c0 kernel/printk/printk.c:1282 console_unlock+0x3a5/0x10d0 kernel/printk/printk.c:2399 vprintk_emit+0x238/0x690 kernel/printk/printk.c:1934 vprintk_default+0x28/0x30 kernel/printk/printk.c:1975 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398 printk+0xba/0xed kernel/printk/printk.c:2008 kobject_cleanup lib/kobject.c:654 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold+0x1f1/0x2e6 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:8043 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9129 unregister_netdevice_many net/core/dev.c:9128 [inline] default_device_exit_batch+0x34e/0x410 net/core/dev.c:9600 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:156 cleanup_net+0x404/0x970 net/core/net_namespace.c:553 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