INFO: task kworker/1:1:23 blocked for more than 120 seconds. Not tainted 4.16.0-rc7+ #368 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:1 D17304 23 2 0x80000000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440 schedule+0xf5/0x430 kernel/sched/core.c:3499 schedule_preempt_disabled+0x10/0x20 kernel/sched/core.c:3557 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0xaad/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 addrconf_verify_work+0xe/0x20 net/ipv6/addrconf.c:4419 process_one_work+0xc47/0x1bb0 kernel/workqueue.c:2113 worker_thread+0x223/0x1990 kernel/workqueue.c:2247 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Showing all locks held in the system: 3 locks held by kworker/1:1/23: #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000003b33d4c4>] work_static include/linux/workqueue.h:198 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000003b33d4c4>] set_work_data kernel/workqueue.c:619 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000003b33d4c4>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000003b33d4c4>] process_one_work+0xb12/0x1bb0 kernel/workqueue.c:2084 #1: ((addr_chk_work).work){+.+.}, at: [<000000007bcd42bd>] process_one_work+0xb89/0x1bb0 kernel/workqueue.c:2088 #2: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 2 locks held by khungtaskd/867: #0: (rcu_read_lock){....}, at: [<00000000b11658cd>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: (rcu_read_lock){....}, at: [<00000000b11658cd>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249 #1: (tasklist_lock){.+.+}, at: [<00000000de3cbfb7>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470 2 locks held by getty/4388: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4389: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4390: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4391: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4392: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4393: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4394: #0: (&tty->ldisc_sem){++++}, at: [<00000000adf2cc84>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000462f25ad>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 1 lock held by syzkaller546463/4418: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4441: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4449: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4457: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4465: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4473: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4481: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4489: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4497: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4505: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4513: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4521: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4529: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4537: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4545: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4553: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4431: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4437: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4445: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4452: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4460: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4468: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4476: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4484: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4492: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4500: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4508: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4516: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4524: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4532: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4540: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4548: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4432: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4438: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4446: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4454: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4462: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4470: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4478: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4486: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4494: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4502: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4510: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4518: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4526: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4534: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4542: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4550: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4430: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4439: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4448: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4455: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4464: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4471: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4480: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4487: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4495: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4503: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4512: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4519: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4528: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4535: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4544: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4551: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 2 locks held by syzkaller546463/4427: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (ipvs->sync_mutex){+.+.}, at: [<0000000030031704>] do_ip_vs_set_ctl+0x10f8/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2388 1 lock held by syzkaller546463/4440: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4447: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4456: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4463: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4472: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4479: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4488: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4496: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4504: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4511: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4520: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4527: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4536: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4543: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4552: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4422: #0: (sb_writers#5){.+.+}, at: [<00000000ab47729c>] __wake_up_common_lock+0x190/0x310 kernel/sched/wait.c:124 1 lock held by syzkaller546463/4429: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4434: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4442: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4450: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4458: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4466: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4474: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4482: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4490: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4498: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4506: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4514: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4522: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4530: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4538: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4546: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4423: #0: (&pipe->mutex/1){+.+.}, at: [<00000000eb98de0f>] __pipe_lock fs/pipe.c:83 [inline] #0: (&pipe->mutex/1){+.+.}, at: [<00000000eb98de0f>] pipe_write+0xae/0xd60 fs/pipe.c:366 1 lock held by syzkaller546463/4426: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4436: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4444: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4453: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4461: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4469: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4477: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4485: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4493: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4501: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4509: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4517: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4525: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4533: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4541: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4549: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4428: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4435: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4443: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4451: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4459: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4467: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4475: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4483: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4491: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4499: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4507: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4515: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4523: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4531: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller546463/4539: #0: (ipvs->sync_mutex){+.+.}, at: [<000000000cd1961d>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller546463/4547: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by ipvs-b:0:0/4433: #0: (rtnl_mutex){+.+.}, at: [<00000000a7b77366>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 867 Comm: khungtaskd Not tainted 4.16.0-rc7+ #368 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x123/0x180 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:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0x90c/0xd60 kernel/hung_task.c:249 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4420 Comm: syzkaller546463 Not tainted 4.16.0-rc7+ #368 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x9dd/0x3e00 kernel/locking/lockdep.c:3290 RSP: 0018:ffff8801afd37440 EFLAGS: 00000007 RAX: 0000000000000000 RBX: ffff8801afd0c920 RCX: 0000000000000000 RDX: 1ffff10035fa191e RSI: 0000000007e4bb03 RDI: ffffed0035fa6ef0 RBP: ffff8801afd377d0 R08: 1ffff10035fa6e65 R09: 000000000000000e R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000007b21 R13: 0583f03823a673b4 R14: ffffffff887b5088 R15: ffff8801afd0c080 FS: 0000000000a7c880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001d58000 CR3: 00000001b01d1006 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] current_kernel_time64+0xf1/0x2f0 kernel/time/timekeeping.c:2197 current_kernel_time include/linux/timekeeping32.h:17 [inline] current_time+0x18/0xc0 fs/inode.c:2122 file_update_time+0x141/0x5b0 fs/inode.c:1863 pipe_write+0x6cd/0xd60 fs/pipe.c:481 call_write_iter include/linux/fs.h:1782 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x684/0x970 fs/read_write.c:482 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x445959 RSP: 002b:00007fffccce6a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000006dada0 RCX: 0000000000445959 RDX: 0000000000000012 RSI: 00000000004ade66 RDI: 0000000000000001 RBP: 0000000000000010 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dad8c R13: 00000000006dada0 R14: 0000000000000003 R15: 0000000000000001 Code: 03 8d 00 fd ff ff 31 c0 48 8d 79 08 48 c7 01 00 00 00 00 48 c7 41 50 00 00 00 00 48 83 e7 f8 48 29 f9 83 c1 58 c1 e9 03 f3 48 ab <48> 81 c4 60 03 00 00 44 89 d0 5b 41 5a 41 5c 41 5d 41 5e 41 5f