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INFO: task hung in do_ip_vs_set_ctl

Status: closed as invalid on 2018/03/27 11:14
Subsystems: lvs
[Documentation on labels]
First crash: 2222d, last: 2222d
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in do_ip_vs_set_ctl (2) lvs C done unreliable 3 2195d 2210d 0/26 closed as invalid on 2019/11/27 06:19
android-44 INFO: task hung in do_ip_vs_set_ctl 1 2186d 2186d 0/2 auto-closed as invalid on 2019/02/22 13:09
android-49 INFO: task hung in do_ip_vs_set_ctl (2) C 2 2194d 1838d 0/3 public: reported C repro on 2019/04/14 08:51
android-49 INFO: task hung in do_ip_vs_set_ctl C 1 2222d 2222d 0/3 closed as invalid on 2018/03/27 11:14

Sample crash report:
INFO: task syzkaller680329:4137 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.
syzkaller680329 D22824  4137   4133 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_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
 do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
 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:1253
 udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2400
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:3039
 SYSC_setsockopt net/socket.c:1850 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1829
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x445959
RSP: 002b:00007ff1b468ddb8 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: 00007ffd079e3f8f R14: 00007ff1b468e9c0 R15: 0000000000000001

Showing all locks held in the system:
3 locks held by kworker/0:1/24:
 #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000012888e70>] work_static include/linux/workqueue.h:198 [inline]
 #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000012888e70>] set_work_data kernel/workqueue.c:619 [inline]
 #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000012888e70>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
 #0:  ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<0000000012888e70>] process_one_work+0xb12/0x1bb0 kernel/workqueue.c:2084
 #1:  ((addr_chk_work).work){+.+.}, at: [<00000000feec656f>] process_one_work+0xb89/0x1bb0 kernel/workqueue.c:2088
 #2:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
2 locks held by khungtaskd/800:
 #0:  (rcu_read_lock){....}, at: [<00000000fd9fd4ce>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline]
 #0:  (rcu_read_lock){....}, at: [<00000000fd9fd4ce>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249
 #1:  (tasklist_lock){.+.+}, at: [<000000007063bf71>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470
2 locks held by getty/4105:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4106:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4107:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4108:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4109:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4110:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
2 locks held by getty/4111:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000fdf4ab7f>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000bc7968a6>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131
1 lock held by syzkaller680329/4137:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4154:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4165:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4170:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4181:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4186:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4197:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4202:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4213:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4218:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4229:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4234:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4245:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4250:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4261:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4266:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4148:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4158:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4163:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4173:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4180:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4189:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4195:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4205:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4211:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4221:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4227:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4237:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4242:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4252:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4260:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4269:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4139:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4160:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4168:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4176:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4184:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4192:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4200:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4208:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4216:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4224:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4232:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4240:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4248:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4256:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4264:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4272:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4142:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4161:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4169:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4177:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4185:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4193:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4201:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4209:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4217:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4225:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4233:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4241:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4249:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4257:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4265:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4273:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4149:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4159:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4166:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4175:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4182:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4191:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4198:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4207:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4214:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4223:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4230:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4239:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4246:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4255:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4262:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4271:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
2 locks held by syzkaller680329/4146:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
 #1:  (ipvs->sync_mutex){+.+.}, at: [<0000000049d4dad8>] do_ip_vs_set_ctl+0x10f8/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2388
1 lock held by syzkaller680329/4157:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4162:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4172:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4178:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4188:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4194:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4204:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4210:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4220:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4226:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4236:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4243:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4253:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4259:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4270:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4150:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4155:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4167:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4171:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4183:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4187:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4199:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4203:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4215:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4219:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4231:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4235:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4247:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4251:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4263:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4267:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4145:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4156:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4164:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4174:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4179:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4190:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4196:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4206:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4212:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4222:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4228:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4238:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4244:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4254:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by syzkaller680329/4258:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74
1 lock held by syzkaller680329/4268:
 #0:  (ipvs->sync_mutex){+.+.}, at: [<00000000e0ba2a30>] do_ip_vs_set_ctl+0x277/0x1cc0 net/netfilter/ipvs/ip_vs_ctl.c:2393
1 lock held by ipvs-b:0:0/4153:
 #0:  (rtnl_mutex){+.+.}, at: [<00000000cc0b82fa>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 800 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: 4135 Comm: syzkaller680329 Not tainted 4.16.0-rc6+ #282
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hlock_class kernel/locking/lockdep.c:152 [inline]
RIP: 0010:mark_lock+0x194/0x1430 kernel/locking/lockdep.c:3121
RSP: 0018:ffff8801c846efb8 EFLAGS: 00000002
RAX: 0000000000000085 RBX: 0000000000000008 RCX: 0000000000000299
RDX: ffff8801c9184c80 RSI: 1ffff10039230990 RDI: ffff8801c91843c0
RBP: ffff8801c846f0e0 R08: 1ffff1003908ddfb R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c9184c60
R13: 0000000000000100 R14: 000000000000ad40 R15: 1ffff1003908ddfb
FS:  0000000001d88880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001c91c1005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __lock_acquire+0x664/0x3e00 kernel/locking/lockdep.c:3392
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
 try_to_wake_up+0xbc/0x15f0 kernel/sched/core.c:1989
 default_wake_function+0x30/0x50 kernel/sched/core.c:3693
 __pollwake fs/select.c:207 [inline]
 pollwake+0x20f/0x2d0 fs/select.c:217
 __wake_up_common+0x18e/0x780 kernel/sched/wait.c:97
 __wake_up_common_lock+0x1b4/0x310 kernel/sched/wait.c:125
 __wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
 pipe_write+0x63b/0xd60 fs/pipe.c:477
 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:00007ffd079e4008 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: ee 03 0f b6 0c 0e 84 c9 74 09 80 f9 03 0f 8e 1a 01 00 00 25 ff 1f 00 00 48 8d 0c 80 4c 8d 34 88 49 c1 e6 04 49 81 ee 50 01 00 00 <49> 81 c6 40 21 0f 88 49 8d 7e 30 48 b8 00 00 00 00 00 fc ff df

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/03/27 00:32 net-next-old 996bfed11874 0ca7878b .config console log report syz C ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.