INFO: task kworker/1:1:24 blocked for more than 120 seconds. Not tainted 4.16.0-rc6+ #282 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/1:1 D20768 24 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:4457 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/1:1/24: #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000002b5c3318>] work_static include/linux/workqueue.h:198 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000002b5c3318>] set_work_data kernel/workqueue.c:619 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000002b5c3318>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000002b5c3318>] process_one_work+0xb12/0x1bb0 kernel/workqueue.c:2084 #1: ((addr_chk_work).work){+.+.}, at: [<00000000a76b91fc>] process_one_work+0xb89/0x1bb0 kernel/workqueue.c:2088 #2: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 2 locks held by khungtaskd/801: #0: (rcu_read_lock){....}, at: [<00000000b784bbd5>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: (rcu_read_lock){....}, at: [<00000000b784bbd5>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249 #1: (tasklist_lock){.+.+}, at: [<0000000082db540d>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470 2 locks held by getty/4008: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4009: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4010: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4011: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4012: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4013: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4014: #0: (&tty->ldisc_sem){++++}, at: [<0000000084e8d5dd>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000008d46a220>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by syzkaller709413/4040: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 #1: (ipvs->sync_mutex){+.+.}, at: [<000000008d009ff9>] do_ip_vs_set_ctl+0x10f8/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2388 1 lock held by syzkaller709413/4060: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4068: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4076: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4084: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4092: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4100: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4108: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4116: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4124: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4132: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4140: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4148: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4156: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4164: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4172: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4054: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4058: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4066: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4074: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4082: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4091: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4099: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4107: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4115: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4123: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4131: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4139: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4147: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4155: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4163: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4171: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4053: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4062: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4070: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4078: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4086: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4094: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4102: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4110: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4118: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4126: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4134: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4142: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4150: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4158: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4166: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4174: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4052: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4063: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4071: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4079: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4087: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4095: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4103: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4111: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4119: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4127: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4135: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4143: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4151: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4159: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4167: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4175: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4051: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4059: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4067: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4075: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4083: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4090: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4098: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4106: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4114: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4122: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4130: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4138: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4146: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4154: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4162: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4170: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4044: #0: (&pipe->mutex/1){+.+.}, at: [<00000000d552ac2f>] __pipe_lock fs/pipe.c:83 [inline] #0: (&pipe->mutex/1){+.+.}, at: [<00000000d552ac2f>] pipe_write+0xae/0xd60 fs/pipe.c:366 1 lock held by syzkaller709413/4049: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4056: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4065: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4073: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4081: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4089: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4097: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4105: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4113: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4120: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4128: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4136: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4144: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4152: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4160: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4168: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4045: #0: (sb_writers#5){.+.+}, at: [<000000009dce2033>] spin_lock include/linux/spinlock.h:310 [inline] #0: (sb_writers#5){.+.+}, at: [<000000009dce2033>] __mutex_unlock_slowpath+0x1f6/0xac0 kernel/locking/mutex.c:1051 1 lock held by syzkaller709413/4050: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4057: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4064: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4072: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4080: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4088: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4096: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4104: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4112: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4121: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4129: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4137: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4145: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4153: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4161: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4169: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4046: #0: (&pipe->mutex/1){+.+.}, at: [<00000000d552ac2f>] __pipe_lock fs/pipe.c:83 [inline] #0: (&pipe->mutex/1){+.+.}, at: [<00000000d552ac2f>] pipe_write+0xae/0xd60 fs/pipe.c:366 1 lock held by syzkaller709413/4047: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4061: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4069: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4077: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4085: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4093: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4101: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4109: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4117: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4125: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4133: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4141: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4149: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4157: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by syzkaller709413/4165: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 1 lock held by syzkaller709413/4173: #0: (ipvs->sync_mutex){+.+.}, at: [<0000000085ca47ee>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393 1 lock held by ipvs-b:0:0/4055: #0: (rtnl_mutex){+.+.}, at: [<00000000badb3b91>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 801 Comm: khungtaskd Not tainted 4.16.0-rc6+ #282 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: 4044 Comm: syzkaller709413 Not tainted 4.16.0-rc6+ #282 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0033:0x400b99 RSP: 002b:00007ffc60a94b00 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 00000000006dac80 RCX: 0000000000445959 RDX: 0000000000000012 RSI: 00000000004ade66 RDI: 0000000000000001 RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dac6c R13: 00000000006dada0 R14: 0000000000000001 R15: 0000000000000001 FS: 00000000012df880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006c8000 CR3: 00000001d2de5002 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400