bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves bond1 (unregistering): Released all slaves INFO: task kworker/1:1:24 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/1:1 D23472 24 2 0x80000000 kobject: 'rx-0' (00000000b2590c88): kobject_cleanup, parent 0000000085eddd57 Workqueue: ipv6_addrconf addrconf_dad_work Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'rx-0' (00000000b2590c88): auto cleanup 'remove' event kobject: 'rx-0' (00000000b2590c88): kobject_uevent_env 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 kobject: 'rx-0' (00000000b2590c88): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (00000000b2590c88): auto cleanup kobject_del mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 addrconf_dad_work+0xad/0x1150 net/ipv6/addrconf.c:3975 kobject: 'rx-0' (00000000b2590c88): calling ktype release process_one_work+0x989/0x1750 kernel/workqueue.c:2153 kobject: 'rx-0': free name kobject: 'tx-0' (00000000adcdeeaa): kobject_cleanup, parent 0000000085eddd57 kobject: 'tx-0' (00000000adcdeeaa): auto cleanup 'remove' event kobject: 'tx-0' (00000000adcdeeaa): kobject_uevent_env kobject: 'tx-0' (00000000adcdeeaa): kobject_uevent_env: uevent_suppress caused the event to drop! worker_thread+0x98/0xe40 kernel/workqueue.c:2296 kobject: 'tx-0' (00000000adcdeeaa): auto cleanup kobject_del kthread+0x354/0x420 kernel/kthread.c:246 kobject: 'tx-0' (00000000adcdeeaa): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (0000000085eddd57): kobject_cleanup, parent (null) ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kobject: 'queues' (0000000085eddd57): calling ktype release INFO: task kworker/1:4:29620 blocked for more than 140 seconds. kobject: 'queues' (0000000085eddd57): kset_release Not tainted 4.19.86-syzkaller #0 kobject: 'queues': free name "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:4 D24128 29620 2 0x80000000 Workqueue: events linkwatch_event kobject: 'bridge701' (00000000e805b9ec): kobject_uevent_env Call Trace: kobject: 'bridge701' (00000000e805b9ec): 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: 'batman_adv' (0000000087748e27): kobject_uevent_env kobject: 'batman_adv' (0000000087748e27): kobject_uevent_env: filter function caused the event to drop! kobject: 'batman_adv' (0000000087748e27): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000087748e27): calling ktype release schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: (0000000087748e27): 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+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 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/0:4:30066 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/0:4 D27072 30066 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/0:1:25463 blocked for more than 140 seconds. kobject: 'rx-0' (000000001e98f0dc): kobject_cleanup, parent 0000000094eec480 Not tainted 4.19.86-syzkaller #0 kobject: 'rx-0' (000000001e98f0dc): auto cleanup 'remove' event kobject: 'rx-0' (000000001e98f0dc): kobject_uevent_env kobject: 'rx-0' (000000001e98f0dc): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'rx-0' (000000001e98f0dc): auto cleanup kobject_del kobject: 'rx-0' (000000001e98f0dc): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (000000006a207d11): kobject_cleanup, parent 0000000094eec480 kobject: 'tx-0' (000000006a207d11): auto cleanup 'remove' event "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'tx-0' (000000006a207d11): kobject_uevent_env kworker/0:1 D kobject: 'tx-0' (000000006a207d11): kobject_uevent_env: uevent_suppress caused the event to drop! 23728 25463 2 0x80000000 kobject: 'tx-0' (000000006a207d11): auto cleanup kobject_del kobject: 'tx-0' (000000006a207d11): calling ktype release Workqueue: ipv6_addrconf addrconf_dad_work kobject: 'tx-0': free name kobject: 'queues' (0000000094eec480): kobject_cleanup, parent (null) Call Trace: kobject: 'queues' (0000000094eec480): calling ktype release context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'queues' (0000000094eec480): kset_release kobject: 'queues': free name kobject: 'bridge700' (00000000f1e9b025): kobject_uevent_env kobject: 'bridge700' (00000000f1e9b025): kobject_uevent_env: uevent_suppress caused the event to drop! schedule+0x92/0x1c0 kernel/sched/core.c:3559 kobject: 'batman_adv' (0000000032863d01): kobject_uevent_env schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'batman_adv' (0000000032863d01): kobject_uevent_env: filter function caused the event to drop! __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'batman_adv' (0000000032863d01): kobject_cleanup, parent (null) kobject: 'batman_adv' (0000000032863d01): calling ktype release mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: (0000000032863d01): dynamic_kobj_release rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 kobject: 'batman_adv': free name addrconf_dad_work+0xad/0x1150 net/ipv6/addrconf.c:3975 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 syz-executor.2:3532 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. syz-executor.2 D24056 3532 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: 0033:0x414333 Code: 1f 84 00 00 00 00 00 bf b5 30 44 00 b9 18 00 00 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 ff 48 83 c4 08 RSP: 002b:00007ffd2306f698 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414333 RDX: 000000000000002c RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffd2306f6a0 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 INFO: task syz-executor.4:3538 blocked for more than 140 seconds. Not tainted 4.19.86-syzkaller #0 kobject: 'rx-0' (0000000086a6fe05): kobject_cleanup, parent 0000000073bd2384 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D24152 3538 1 0x00000004 kobject: 'rx-0' (0000000086a6fe05): auto cleanup 'remove' event Call Trace: context_switch kernel/sched/core.c:2826 [inline] __schedule+0x866/0x1dc0 kernel/sched/core.c:3515 kobject: 'rx-0' (0000000086a6fe05): kobject_uevent_env kobject: 'rx-0' (0000000086a6fe05): kobject_uevent_env: uevent_suppress caused the event to drop! 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 kobject: 'rx-0' (0000000086a6fe05): auto cleanup kobject_del kobject: 'rx-0' (0000000086a6fe05): calling ktype release 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 kobject: 'rx-0': free name netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 kobject: 'tx-0' (000000005f849d6f): kobject_cleanup, parent 0000000073bd2384 kobject: 'tx-0' (000000005f849d6f): auto cleanup 'remove' event 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 kobject: 'tx-0' (000000005f849d6f): kobject_uevent_env kobject: 'tx-0' (000000005f849d6f): kobject_uevent_env: uevent_suppress caused the event to drop! __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 kobject: 'tx-0' (000000005f849d6f): auto cleanup kobject_del do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x414333 Code: 1f 84 00 00 00 00 00 bf b5 30 44 00 b9 18 00 00 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 ff 48 83 c4 08 RSP: 002b:00007fff62e0a508 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414333 RDX: 000000000000002c RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff62e0a510 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 INFO: task syz-executor.1:3539 blocked for more than 140 seconds. kobject: 'tx-0' (000000005f849d6f): calling ktype release Not tainted 4.19.86-syzkaller #0 kobject: 'tx-0': free name "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kobject: 'queues' (0000000073bd2384): kobject_cleanup, parent (null) syz-executor.1 D kobject: 'queues' (0000000073bd2384): calling ktype release 24152 3539 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 kobject: 'queues' (0000000073bd2384): kset_release schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3617 kobject: 'queues': free name __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0x726/0x1300 kernel/locking/mutex.c:1072 kobject: 'bridge699' (00000000ccd8f36d): kobject_uevent_env kobject: 'bridge699' (00000000ccd8f36d): kobject_uevent_env: uevent_suppress caused the event to drop! kobject: 'batman_adv' (00000000d9f8c7b0): kobject_uevent_env mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject: 'batman_adv' (00000000d9f8c7b0): kobject_uevent_env: filter function caused the event to drop! rtnl_lock net/core/rtnetlink.c:77 [inline] rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 kobject: 'batman_adv' (00000000d9f8c7b0): kobject_cleanup, parent (null) kobject: 'batman_adv' (00000000d9f8c7b0): calling ktype release netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 kobject: (00000000d9f8c7b0): dynamic_kobj_release 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 kobject: 'batman_adv': free name 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: 0033:0x414333 Code: 1f 84 00 00 00 00 00 bf b5 30 44 00 b9 18 00 00 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 ff 48 83 c4 08 RSP: 002b:00007ffe868e80e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414333 RDX: 0000000000000068 RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffe868e80f0 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 INFO: task syz-executor.5:3540 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. syz-executor.5 D24152 3540 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: 0033:0x414333 Code: 1f 84 00 00 00 00 00 bf b5 30 44 00 b9 18 00 00 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 ff 48 83 c4 08 RSP: 002b:00007fffe1b10ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414333 RDX: 0000000000000028 RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fffe1b10ef0 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 INFO: task syz-executor.0:3541 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. syz-executor.0 D24152 3541 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: 0033:0x414333 Code: 1f 84 00 00 00 00 00 bf b5 30 44 00 b9 18 00 00 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 ff 48 83 c4 08 RSP: 002b:00007fff10c82218 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000a72200 RCX: 0000000000414333 RDX: 0000000000000068 RSI: 0000000000a72250 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff10c82220 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000a72250 R15: 0000000000000003 Showing all locks held in the system: 3 locks held by kworker/1:1/24: kobject: 'rx-0' (000000007530dc1c): kobject_cleanup, parent 0000000025cd1728 #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 kobject: 'rx-0' (000000007530dc1c): auto cleanup 'remove' event #1: 000000000014ae7b ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 1 lock held by khungtaskd/1042: #0: 0000000009a4ebf6 kobject: 'rx-0' (000000007530dc1c): kobject_uevent_env ( kobject: 'rx-0' (000000007530dc1c): kobject_uevent_env: uevent_suppress caused the event to drop! rcu_read_lock kobject: 'rx-0' (000000007530dc1c): auto cleanup kobject_del ){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4438 1 lock held by rsyslogd/7341: 2 locks held by getty/7462: #0: 000000000b9649eb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000bbc68876 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7463: kobject: 'rx-0' (000000007530dc1c): calling ktype release #0: kobject: 'rx-0': free name 000000005c252cf7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: kobject: 'tx-0' (000000006f24893b): kobject_cleanup, parent 0000000025cd1728 000000009c919abe kobject: 'tx-0' (000000006f24893b): auto cleanup 'remove' event (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7464: #0: kobject: 'tx-0' (000000006f24893b): kobject_uevent_env 00000000e5f5c4f9 kobject: 'tx-0' (000000006f24893b): kobject_uevent_env: uevent_suppress caused the event to drop! (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 000000005b1f9b4c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7465: #0: 000000005b152846 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000dd09559b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7466: #0: 00000000f2f7b44b (&tty->ldisc_sem kobject: 'tx-0' (000000006f24893b): auto cleanup kobject_del ){++++} kobject: 'tx-0' (000000006f24893b): calling ktype release , at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 kobject: 'tx-0': free name #1: kobject: 'queues' (0000000025cd1728): kobject_cleanup, parent (null) 000000003c1503df (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 2 locks held by getty/7467: kobject: 'queues' (0000000025cd1728): calling ktype release #0: 000000004c7fbb6c kobject: 'queues' (0000000025cd1728): kset_release ( kobject: 'queues': free name &tty->ldisc_sem kobject: 'bridge698' (000000009ea4a76a): kobject_uevent_env ){++++} kobject: 'bridge698' (000000009ea4a76a): kobject_uevent_env: uevent_suppress caused the event to drop! , at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: kobject: 'batman_adv' (00000000fe0afe25): kobject_uevent_env 00000000ccb0da0e kobject: 'batman_adv' (00000000fe0afe25): kobject_uevent_env: filter function caused the event to drop! ( kobject: 'batman_adv' (00000000fe0afe25): kobject_cleanup, parent (null) &ldata->atomic_read_lock kobject: 'batman_adv' (00000000fe0afe25): calling ktype release ){+.+.} kobject: (00000000fe0afe25): dynamic_kobj_release , at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 kobject: 'batman_adv': free name 2 locks held by getty/7468: #0: 0000000066e3919a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362 #1: 00000000db7be292 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154 3 locks held by kworker/1:4/29620: #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000d6af997f ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 3 locks held by kworker/0:4/30066: #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000741770a4 ((wq_completion)"events"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000c4de9328 (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 4 locks held by kworker/u4:0/15630: #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 000000001b7adadc ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 000000007d08649a (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 0000000096cc37c9 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x970 net/core/net_namespace.c:520 #3: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 2 locks held by kworker/u4:5/21652: #0: 0000000074dfd181 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9591 [inline] #0: 0000000074dfd181 (&rq->lock){-.-.}, at: pick_next_task_fair+0xfae/0x1580 kernel/sched/fair.c:6772 #1: 0000000009a4ebf6 (rcu_read_lock){....}, at: __update_idle_core+0x45/0x3f0 kernel/sched/fair.c:5989 3 locks held by kworker/0:1/25463: #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000fa1f066e ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1750 kernel/workqueue.c:2124 #1: 00000000ef9552aa ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: process_one_work+0x8b4/0x1750 kernel/workqueue.c:2128 #2: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:77 1 lock held by syz-executor.2/3532: #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 1 lock held by syz-executor.4/3538: #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 1 lock held by syz-executor.1/3539: #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 1 lock held by syz-executor.5/3540: #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 1 lock held by syz-executor.0/3541: #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009a522cdf (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:4744 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1042 Comm: khungtaskd Not tainted 4.19.86-syzkaller #0 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+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 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60