bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 INFO: task kworker/0:2:2981 blocked for more than 140 seconds. kobject: 'batman_adv' (00000000a9b2d1c5): kobject_uevent_env Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'batman_adv' (00000000a9b2d1c5): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (00000000a9b2d1c5): kobject_cleanup, parent (null) kworker/0:2 D26392 2981 2 0x80000000 Workqueue: events switchdev_deferred_process_work Call Trace: kobject: 'batman_adv' (00000000a9b2d1c5): calling ktype release kobject: (00000000a9b2d1c5): dynamic_kobj_release context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 kobject: 'batman_adv': free name schedule+0x92/0x180 kernel/sched/core.c:3529 kobject: 'rx-0' (00000000720b7ac8): kobject_cleanup, parent 0000000094bc669d kobject: 'rx-0' (00000000720b7ac8): auto cleanup 'remove' event schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 kobject: 'rx-0' (00000000720b7ac8): kobject_uevent_env kobject: 'rx-0' (00000000720b7ac8): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000720b7ac8): auto cleanup kobject_del kobject: 'rx-0' (00000000720b7ac8): calling ktype release kobject: 'rx-0': free name mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'tx-0' (000000008a88623a): kobject_cleanup, parent 0000000094bc669d rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 kobject: 'tx-0' (000000008a88623a): auto cleanup 'remove' event kobject: 'tx-0' (000000008a88623a): kobject_uevent_env kobject: 'tx-0' (000000008a88623a): kobject_uevent_env: uevent_suppress caused the event to drop! switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:150 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 kobject: 'tx-0' (000000008a88623a): auto cleanup kobject_del kobject: 'tx-0' (000000008a88623a): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (0000000094bc669d): kobject_cleanup, parent (null) worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kobject: 'queues' (0000000094bc669d): calling ktype release kthread+0x357/0x430 kernel/kthread.c:246 kobject: 'queues' (0000000094bc669d): kset_release kobject: 'queues': free name kobject: 'bond_slave_1' (00000000cad3322e): kobject_uevent_env ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 kobject: 'bond_slave_1' (00000000cad3322e): kobject_uevent_env: uevent_suppress caused the event to drop! INFO: task kworker/0:3:1751 blocked for more than 140 seconds. kobject: 'batman_adv' (000000003aab2c72): kobject_uevent_env Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'batman_adv' (000000003aab2c72): kobject_uevent_env: filter function caused the event to drop! kworker/0:3 D27016 1751 2 0x80000000 Workqueue: events linkwatch_event kobject: 'batman_adv' (000000003aab2c72): kobject_cleanup, parent (null) Call Trace: kobject: 'batman_adv' (000000003aab2c72): calling ktype release context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 kobject: (000000003aab2c72): dynamic_kobj_release schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 kobject: 'batman_adv': free name kobject: 'rx-0' (0000000047d2e01c): kobject_cleanup, parent 0000000004302fd5 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 kobject: 'rx-0' (0000000047d2e01c): auto cleanup 'remove' event kobject: 'rx-0' (0000000047d2e01c): kobject_uevent_env kobject: 'rx-0' (0000000047d2e01c): kobject_uevent_env: uevent_suppress caused the event to drop! mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 linkwatch_event+0xf/0x70 net/core/link_watch.c:236 process_one_work+0x98e/0x1790 kernel/workqueue.c:2173 kobject: 'rx-0' (0000000047d2e01c): auto cleanup kobject_del kobject: 'rx-0' (0000000047d2e01c): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (000000008e8c0a04): kobject_cleanup, parent 0000000004302fd5 worker_thread+0x98/0xe40 kernel/workqueue.c:2319 kobject: 'tx-0' (000000008e8c0a04): auto cleanup 'remove' event kthread+0x357/0x430 kernel/kthread.c:246 kobject: 'tx-0' (000000008e8c0a04): kobject_uevent_env kobject: 'tx-0' (000000008e8c0a04): kobject_uevent_env: uevent_suppress caused the event to drop! ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 INFO: task syz-executor.0:2193 blocked for more than 140 seconds. kobject: 'tx-0' (000000008e8c0a04): auto cleanup kobject_del Not tainted 5.0.0-rc6+ #70 kobject: 'tx-0' (000000008e8c0a04): calling ktype release "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'tx-0': free name kobject: 'queues' (0000000004302fd5): kobject_cleanup, parent (null) syz-executor.0 D29792 2193 1749 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 kobject: 'queues' (0000000004302fd5): calling ktype release kobject: 'queues' (0000000004302fd5): kset_release schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 kobject: 'queues': free name kobject: 'veth1_to_bond' (00000000bc1665b2): kobject_uevent_env kobject: 'veth1_to_bond' (00000000bc1665b2): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'bonding_slave' (00000000f8b21c16): kobject_cleanup, parent 0000000067179fa7 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'bonding_slave' (00000000f8b21c16): does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt. rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 kobject: 'bonding_slave' (00000000f8b21c16): auto cleanup kobject_del kobject: 'bonding_slave': free name sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: 24 28 48 89 4c 24 08 66 c7 44 24 10 01 01 48 c7 44 24 18 00 00 00 00 e8 a5 b0 fc ff 48 8b 44 24 38 48 89 04 24 e8 d7 77 fb ff <48> 8b 6c 24 40 48 83 c4 48 c3 48 89 d1 eb 90 e8 73 20 00 00 e9 7e RSP: 002b:00007fe8a3b47c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8a3b486d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff INFO: task syz-executor.0:2203 blocked for more than 140 seconds. bond0 (unregistering): Releasing backup interface bond_slave_0 Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28672 2203 1749 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007fe8a3b26c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000005 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8a3b276d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff INFO: task syz-executor.1:2199 blocked for more than 140 seconds. Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D29792 2199 7526 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007fb4c3fb1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000140 RSI: 0000001000008912 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4c3fb26d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff INFO: task syz-executor.1:2205 blocked for more than 140 seconds. Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D27072 2205 7526 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007fb4c3f90c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000140 RSI: 0000001000008912 RDI: 0000000000000006 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb4c3f916d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff INFO: task syz-executor.2:2202 blocked for more than 140 seconds. Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29792 2202 7528 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe net_ratelimit: 11850 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007f4362263c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000140 RSI: 0000001000008912 RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43622646d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff INFO: task syz-executor.2:2207 blocked for more than 140 seconds. Not tainted 5.0.0-rc6+ #70 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29632 2207 7528 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3587 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 sock_do_ioctl+0x254/0x300 net/socket.c:984 sock_ioctl+0x32b/0x610 net/socket.c:1095 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e29 Code: Bad RIP value. RSP: 002b:00007f4362221c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29 RDX: 0000000020000140 RSI: 0000001000008912 RDI: 0000000000000005 RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43622226d4 R13: 00000000004bf03a R14: 00000000004d0928 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1041: #0: 0000000038dd3b25 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 3 locks held by kworker/0:2/2981: #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 000000009f55006b (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 #2: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 2 locks held by rsyslogd/7396: #0: 000000009daaad36 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 #1: 000000002b086d47 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1149 [inline] #1: 000000002b086d47 (&rq->lock){-.-.}, at: __schedule+0x1fc/0x1cc0 kernel/sched/core.c:3423 2 locks held by getty/7486: #0: 000000004c7875ea (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009937b53a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7487: #0: 00000000085d6075 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d0834fb8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7488: #0: 00000000079b2f75 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000006cf2b9c5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7489: #0: 00000000854f3dde (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000067c90ca3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7490: #0: 00000000b98ffd58 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000009ea891e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7491: #0: 0000000099252160 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000bf39771e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7492: #0: 0000000025f5e35a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000670601d4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 4 locks held by kworker/u4:8/10296: #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000074f20c7 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 00000000fd5de198 (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 #2: 00000000a1491b22 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x960 net/core/net_namespace.c:518 #3: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 3 locks held by kworker/0:4/27806: #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 0000000034d66b41 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 00000000b16956ce ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 #2: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 3 locks held by kworker/0:3/1751: #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000cf99b401 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2144 #1: 0000000002e62634 ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2148 #2: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.0/2193: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.0/2203: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.1/2199: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.1/2205: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.2/2202: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 1 lock held by syz-executor.2/2207: #0: 0000000043b2e76c (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.0.0-rc6+ #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.016 msecs NMI backtrace for cpu 1 CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.0.0-rc6+ #70 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_dynticks_curr_cpu_in_eqs+0x6/0xb0 kernel/rcu/tree.c:302 Code: 00 00 00 00 55 48 89 e5 e8 37 d5 ff ff 65 48 8b 3c 25 40 ee 01 00 e8 59 e3 ff ff 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 54 <53> 48 c7 c3 c0 dd 02 00 48 83 ec 08 e8 e9 63 cd 01 48 ba 00 00 00 RSP: 0018:ffff8880a98df3f8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000003 RCX: 1ffffffff12b9d47 RDX: 0000000000000000 RSI: ffffffff860b90e1 RDI: ffff8880a98d0cbc RBP: ffff8880a98df400 R08: ffff8880a98d0440 R09: ffff8880a98df570 R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: 0000000000000010 R13: ffff888088ccddc0 R14: ffff888088ccdd00 R15: ffff8880a91556c0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000457dff CR3: 00000000908fc000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:932 rcu_read_lock_held+0x81/0xd0 kernel/rcu/update.c:277 __in6_dev_get include/net/addrconf.h:356 [inline] fib6_ignore_linkdown net/ipv6/route.c:649 [inline] find_match+0x7b6/0xe20 net/ipv6/route.c:667 find_rr_leaf net/ipv6/route.c:713 [inline] rt6_select net/ipv6/route.c:763 [inline] fib6_table_lookup+0x48e/0xce0 net/ipv6/route.c:1809 ip6_pol_route+0x1a4/0xf00 net/ipv6/route.c:1842 ip6_pol_route_input+0x65/0x80 net/ipv6/route.c:1911 fib6_rule_lookup+0x128/0x560 net/ipv6/fib6_rules.c:118 ip6_route_input_lookup+0xb7/0xd0 net/ipv6/route.c:1923 ip6_route_input+0x5e6/0x9e0 net/ipv6/route.c:2058 ip6_rcv_finish_core.isra.0+0x174/0x590 net/ipv6/ip6_input.c:63 ip6_rcv_finish+0x17d/0x320 net/ipv6/ip6_input.c:74 NF_HOOK include/linux/netfilter.h:289 [inline] NF_HOOK include/linux/netfilter.h:283 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x115/0x1a0 net/core/dev.c:4973 __netif_receive_skb+0x2c/0x1c0 net/core/dev.c:5083 process_backlog+0x206/0x750 net/core/dev.c:5923 napi_poll net/core/dev.c:6346 [inline] net_rx_action+0x4fa/0x1070 net/core/dev.c:6412 __do_softirq+0x266/0x95a kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352