INFO: task syzkaller815322:4406 blocked for more than 120 seconds.
Not tainted 4.16.0-rc7+ #3
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syzkaller815322 D23592 4406 4403 0x00000000
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_timeout+0x1a3/0x230 kernel/time/timer.c:1777
do_wait_for_common kernel/sched/completion.c:86 [inline]
__wait_for_common kernel/sched/completion.c:107 [inline]
wait_for_common kernel/sched/completion.c:118 [inline]
wait_for_completion+0x415/0x770 kernel/sched/completion.c:139
kthread_stop+0x14a/0x7a0 kernel/kthread.c:530
stop_sync_thread+0x3d9/0x740 net/netfilter/ipvs/ip_vs_sync.c:1996
do_ip_vs_set_ctl+0x2b1/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2394
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115
ip_setsockopt+0x97/0xa0 net/ipv4/ip_sockglue.c:1261
udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2406
sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2975
SYSC_setsockopt net/socket.c:1849 [inline]
SyS_setsockopt+0x189/0x360 net/socket.c:1828
do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x445959
RSP: 002b:00007f5a37a49db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445959
RDX: 000000000000048c RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dac20 R08: 0000000000000018 R09: 0000000000000000
R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd1f9d778f R14: 00007f5a37a4a9c0 R15: 0000000000000001
Showing all locks held in the system:
3 locks held by kworker/1:1/23:
#0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000042bd9ebd>] work_static include/linux/workqueue.h:198 [inline]
#0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000042bd9ebd>] set_work_data kernel/workqueue.c:619 [inline]
#0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000042bd9ebd>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000042bd9ebd>] process_one_work+0xb12/0x1bb0 kernel/workqueue.c:2084
#1: ((addr_chk_work).work){+.+.}, at: [<0000000020db8b35>] process_one_work+0xb89/0x1bb0 kernel/workqueue.c:2088
#2: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
2 locks held by khungtaskd/869:
#0: (rcu_read_lock){....}, at: [<0000000095930495>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline]
#0: (rcu_read_lock){....}, at: [<0000000095930495>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249
#1: (tasklist_lock){.+.+}, at: [<0000000045b9b1df>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470
2 locks held by getty/4374:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4375:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4376:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4377:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4378:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4379:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4380:
#0: (&tty->ldisc_sem){++++}, at: [<000000002f19f4a7>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
#1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000c3bc944d>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
1 lock held by syzkaller815322/4406:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4423:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4431:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4439:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4447:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4455:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4463:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4471:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4479:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4487:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4495:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4503:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4511:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4519:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4527:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4535:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4420:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4425:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4433:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4441:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4449:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4457:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4465:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4473:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4481:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4489:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4497:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4505:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4513:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4521:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4529:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4537:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4418:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4429:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4438:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4445:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4454:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4461:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4470:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4477:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4486:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4493:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4502:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4509:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4518:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4525:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4534:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4541:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4419:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4427:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4435:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4443:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4451:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4459:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4467:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4475:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4483:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4491:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4499:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4507:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4515:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4523:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4531:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4539:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4416:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4424:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4432:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4440:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4448:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4456:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4464:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4472:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4480:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4488:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4496:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4504:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4512:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4520:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4528:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4536:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4417:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4426:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4434:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4442:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4450:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4458:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4466:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4474:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4482:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4490:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4498:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4506:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4514:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4522:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4530:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4538:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4415:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
2 locks held by syzkaller815322/4422:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
#1: (ipvs->sync_mutex){+.+.}, at: [<0000000003cd594b>] do_ip_vs_set_ctl+0x10f8/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2388
1 lock held by syzkaller815322/4430:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4437:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4446:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4453:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4462:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4469:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4478:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4485:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4494:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4501:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4510:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4517:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4526:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4533:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4414:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4428:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4436:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4444:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4452:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4460:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4468:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4476:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4484:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4492:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4500:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4508:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4516:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4524:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller815322/4532:
#0: (ipvs->sync_mutex){+.+.}, at: [<0000000065cf3dfc>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller815322/4540:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by ipvs-b:0:0/4421:
#0: (rtnl_mutex){+.+.}, at: [<0000000054bffde5>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 869 Comm: khungtaskd Not tainted 4.16.0-rc7+ #3
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4412 Comm: syzkaller815322 Not tainted 4.16.0-rc7+ #3
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_is_held+0x10c/0x140 kernel/locking/lockdep.c:3749
RSP: 0018:ffff8801b7a97900 EFLAGS: 00000082
RAX: 0000000000000000 RBX: 0000000000000282 RCX: ffffffff819ccbc8
RDX: dffffc0000000000 RSI: ffffffff87b448c0 RDI: ffff8801b4cf0ada
RBP: ffff8801b7a97920 R08: 0000000000000000 R09: 1ffff10036f52f22
R10: ffff8801b7a978d8 R11: 0000000000000001 R12: ffff8801b4cf0240
R13: ffffed003699e156 R14: 0000000000000001 R15: ffff8801b4cf0ab8
FS: 0000000001c2a880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000b7c000 CR3: 00000001b4d80002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held_type+0x118/0x210 kernel/locking/lockdep.c:3958
lock_is_held include/linux/lockdep.h:344 [inline]
rcu_preempt_sleep_check include/linux/rcupdate.h:301 [inline]
___might_sleep+0x35e/0x470 kernel/sched/core.c:6098
__might_sleep+0x95/0x190 kernel/sched/core.c:6086
kmap include/linux/highmem.h:59 [inline]
copy_page_from_iter_iovec lib/iov_iter.c:288 [inline]
copy_page_from_iter+0x31c/0x7c0 lib/iov_iter.c:731
pipe_write+0xa51/0xd60 fs/pipe.c:387
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:00007ffd1f9d7808 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: 04 3c 03 7e 3e 0f b6 43 22 83 e0 03 3b 45 c4 0f 94 c0 48 83 c4 18 5b 0f b6 c0 41 5c 41 5d 41 5e 41 5f 5d c3 31 c0 48 83 c4 18 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 48 8b 7d c8 e8 61 17 53 00 e9 2a