INFO: task kworker/u8:2:5648 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2    state:D stack:22584 pid:5648  tgid:5648  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 addrconf_dad_work+0x116/0x15c0
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/u9:0:32109 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:0    state:D stack:21320 pid:32109 tgid:32109 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 linkwatch_event+0xe/0x60
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/0:5:12040 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5     state:D stack:23016 pid:12040 tgid:12040 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events netdev_rx_mode_work
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 netdev_rx_mode_work+0x18/0x3c0
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/u8:4:14808 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:4    state:D stack:23000 pid:14808 tgid:14808 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: udp_tunnel_nic udp_tunnel_nic_device_sync_work
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 udp_tunnel_nic_device_sync_work+0x29/0xa20
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/1:5:14894 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:23376 pid:14894 tgid:14894 ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient crda_timeout_work
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 crda_timeout_work+0x16/0x80
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.3.10238:21147 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:26536 pid:21147 tgid:21146 ppid:8254   task_flags:0x400040 flags:0x0008000a
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 rtnetlink_rcv_msg+0x767/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f4196289028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4195615fa0 RCX: 00007f419539ce59
RDX: 0000000000008804 RSI: 00002000000001c0 RDI: 0000000000000003
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4195616038 R14: 00007f4195615fa0 R15: 00007ffc1fc81f38
 </TASK>
INFO: task syz.3.10238:21150 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:28456 pid:21150 tgid:21146 ppid:8254   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 __tun_chr_ioctl+0x3bc/0x1e10
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f4196268028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4195616090 RCX: 00007f419539ce59
RDX: 0000200000000040 RSI: 00000000400454ca RDI: 0000000000000006
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4195616128 R14: 00007f4195616090 R15: 00007ffc1fc81f38
 </TASK>
INFO: task syz.3.10238:21152 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:25448 pid:21152 tgid:21146 ppid:8254   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 rtnl_newlink+0x8a3/0x1bd0
 rtnetlink_rcv_msg+0x802/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f4196247028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4195616180 RCX: 00007f419539ce59
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 000000000000000a
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4195616218 R14: 00007f4195616180 R15: 00007ffc1fc81f38
 </TASK>
INFO: task syz.3.10238:21156 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:27200 pid:21156 tgid:21146 ppid:8254   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 rtnetlink_rcv_msg+0x767/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f4196226028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4195616270 RCX: 00007f419539ce59
RDX: 0000000000004000 RSI: 00002000000012c0 RDI: 0000000000000007
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4195616308 R14: 00007f4195616270 R15: 00007ffc1fc81f38
 </TASK>
INFO: task syz.3.10238:21158 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D
 stack:27200 pid:21158 tgid:21146 ppid:8254   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 genl_rcv_msg+0x10b/0x7a0
 netlink_rcv_skb+0x226/0x4a0
 genl_rcv+0x28/0x40
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f4196205028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4195616360 RCX: 00007f419539ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000009
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f41956163f8 R14: 00007f4195616360 R15: 00007ffc1fc81f38
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.3.10238:21159 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:28808 pid:21159 tgid:21146 ppid:8254   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 __tun_chr_ioctl+0x3bc/0x1e10
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f41961e4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4195616450 RCX: 00007f419539ce59
RDX: 0000200000000040 RSI: 00000000400454ca RDI: 0000000000000005
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f41956164e8 R14: 00007f4195616450 R15: 00007ffc1fc81f38
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.3.10238:21163 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.10238     state:D stack:27200 pid:21163 tgid:21146 ppid:8254   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 rtnetlink_rcv_msg+0x767/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f419539ce59
RSP: 002b:00007f41961a2028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4195616630 RCX: 00007f419539ce59
RDX: 0000000004000080 RSI: 0000200000001200 RDI: 000000000000000b
RBP: 00007f4195432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f41956166c8 R14: 00007f4195616630 R15: 00007ffc1fc81f38
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.4.10239:21149 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.10239     state:D stack:25920 pid:21149 tgid:21148 ppid:19870  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 rtnl_newlink+0x8a3/0x1bd0
 rtnetlink_rcv_msg+0x802/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5561b9ce59
RSP: 002b:00007f5562aaf028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5561e15fa0 RCX: 00007f5561b9ce59
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f5561c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5561e16038 R14: 00007f5561e15fa0 R15: 00007fff99ac47e8
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.4.10239:21151 blocked for more than 146 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.10239     state:D stack:26248 pid:21151 tgid:21148 ppid:19870  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 inet_rtm_newroute+0x12b/0x250
 rtnetlink_rcv_msg+0x802/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5561b9ce59
RSP: 002b:00007f5562a8e028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5561e16090 RCX: 00007f5561b9ce59
RDX: 3081bf0b056d2e46 RSI: 0000200000000000 RDI: 0000000000000007
RBP: 00007f5561c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5561e16128 R14: 00007f5561e16090 R15: 00007fff99ac47e8
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.4.10239:21155 blocked for more than 147 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.10239     state:D stack:24744 pid:21155 tgid:21148 ppid:19870  task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x1840/0x57a0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7c5/0x1590
 ieee80211_register_hw+0x388f/0x4a40
 mac80211_hwsim_new_radio+0x2ff9/0x5390
 hwsim_new_radio_nl+0xf63/0x1c00
 genl_family_rcv_msg_doit+0x233/0x340
 genl_rcv_msg+0x614/0x7a0
 netlink_rcv_skb+0x226/0x4a0
 genl_rcv+0x28/0x40
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5561b9ce59
RSP: 002b:00007f5562a6d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5561e16180 RCX: 00007f5561b9ce59
RDX: 0000000000000000 RSI: 0000200000000100 RDI: 000000000000000a
RBP: 00007f5561c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5561e16218 R14: 00007f5561e16180 R15: 00007fff99ac47e8
 </TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e95c980 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by getty/5445:
 #0: ffff8881107ac0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: 
ffffc900034732e8
 (
&ldata->atomic_read_lock
){+.+.}-{4:4}
, at: n_tty_read+0x45a/0x1380
3 locks held by kworker/u8:2/5648:
 #0: 
ffff88816de1f140 (
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000479fc40 (
(work_completion)(&(&ifa->dad_work)->work)
){+.+.}-{0:0}
, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}
, at: addrconf_dad_work+0x116/0x15c0
3 locks held by kworker/u9:0/32109:
 #0: ffff8881000ac140
 (
(wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc900039d7c40 (
(linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}
, at: linkwatch_event+0xe/0x60
6 locks held by kworker/u8:0/9098:
 #0: ffff8881012b5940
 (
(wq_completion)netns
){+.+.}-{0:0}
, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000487fc40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdb5e28
 (pernet_ops_rwsem
){++++}-{4:4}
, at: cleanup_net+0xf5/0x810
 #3: 
ffff888012fcc128 (
&dev->mutex
){....}-{4:4}
, at: devlink_pernet_pre_exit+0x129/0x420
 #4: ffff8880200cb258 (&devlink->lock_key#3){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x142/0x420
 #5: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_dev_lock+0x257/0x2f0
3 locks held by kworker/0:5/12040:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc900036cfc40 (rx_mode_work){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: netdev_rx_mode_work+0x18/0x3c0
3 locks held by kworker/0:8/12044:
 #0: ffff888100069d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}
, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000360fc40
 (
(reg_check_chans).work
){+.+.}-{0:0}
, at: process_scheduled_works+0xa20/0x14e0
 #2: 
ffffffff8fdc4b00
 (rtnl_mutex
){+.+.}-{4:4}, at: reg_check_chans_work+0xac/0x10e0
3 locks held by kworker/u8:4/14808:
 #0: ffff888112038140
 ((wq_completion)udp_tunnel_nic
){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc9000b1f7c40 ((work_completion)(&utn->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: udp_tunnel_nic_device_sync_work+0x29/0xa20
3 locks held by kworker/1:5/14894:
 #0: ffff888100069d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #1: ffffc90021b1fc40 ((crda_timeout).work){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0
 #2: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: crda_timeout_work+0x16/0x80
7 locks held by syz.1.10236/21142:
1 lock held by syz.3.10238/21147:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
1 lock held by syz.3.10238/21150:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x3bc/0x1e10
2 locks held by syz.3.10238/21152:
 #0: ffffffff8f550208 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a3/0x1bd0
1 lock held by syz.3.10238/21156:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
2 locks held by syz.3.10238/21158:
 #0: ffffffff8fe34348 (cb_lock
){++++}-{4:4}
, at: genl_rcv+0x19/0x40
 #1: ffffffff8fe34180
 (genl_mutex
){+.+.}-{4:4}, at: genl_rcv_msg+0x10b/0x7a0
1 lock held by syz.3.10238/21159:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x3bc/0x1e10
1 lock held by syz.3.10238/21163:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
2 locks held by syz.4.10239/21149:
 #0: 
ffffffff9031cae0
 (&ops->srcu#2
){.+.+}-{0:0}
, at: rtnl_link_ops_get+0x23/0x250
 #1: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a3/0x1bd0
1 lock held by syz.4.10239/21151:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newroute+0x12b/0x250
3 locks held by syz.4.10239/21155:
 #0: ffffffff8fe34348 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40
 #1: ffffffff8fe34180 (genl_mutex
){+.+.}-{4:4}
, at: genl_rcv_msg+0x10b/0x7a0
 #2: ffffffff8fdc4b00
 (
rtnl_mutex
){+.+.}-{4:4}, at: ieee80211_register_hw+0x388f/0x4a40
1 lock held by syz-executor/21168:
 #0: ffffffff8fdc4b00 (rtnl_mutex
){+.+.}-{4:4}
, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/21171:
 #0: ffffffff8fdc4b00
 (
rtnl_mutex){+.+.}-{4:4}
, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/21176:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/21190:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/21191:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0
1 lock held by syz-executor/21200:
 #0: ffffffff8fdc4b00 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x464/0x19e0

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 21142 Comm: syz.1.10236 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:vprintk_emit+0x45d/0x560
Code: 0f 84 44 ff ff ff e8 22 19 21 00 fb eb 44 e8 1a 19 21 00 e8 15 da fe 09 4d 85 f6 74 94 e8 0b 19 21 00 fb 48 c7 c7 00 ef 94 8e <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 cb 1c
RSP: 0018:ffffc9000b225d00 EFLAGS: 00000246
RAX: ffffffff81a43b05 RBX: ffffffff81a4397f RCX: 0000000000080000
RDX: ffffc9000887a000 RSI: 000000000007ffff RDI: ffffffff8e94ef00
RBP: ffffc9000b225db0 R08: ffffffff902fd6f7 R09: 1ffffffff205fade
R10: dffffc0000000000 R11: fffffbfff205fadf R12: 0000000000000000
R13: 000000000000000f R14: 0000000000000200 R15: 1ffff92001644ba4
FS:  00007f3ae3b176c0(0000) GS:ffff8882a92af000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ae2b9ce2f CR3: 0000000211e38000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 _printk+0xdd/0x130
 seq_buf_do_printk+0x199/0x270
 mem_cgroup_print_oom_meminfo+0x2c3/0x4c0
 dump_header+0x10c/0x4b0
 out_of_memory+0x10d4/0x1480
 try_charge_memcg+0xc74/0x1590
 __memcg_slab_post_alloc_hook+0x82a/0xe60
 kmem_cache_alloc_lru_noprof+0x342/0x640
 __d_alloc+0x37/0x6f0
 d_alloc+0x4b/0x190
 lookup_one_qstr_excl+0xd8/0x360
 start_dirop+0x5c/0x90
 simple_start_creating+0xcc/0x110
 debugfs_start_creating+0xdb/0x1a0
 __debugfs_create_file+0x6f/0x400
 debugfs_create_file_short+0x3f/0x60
 ieee80211_debugfs_recreate_netdev+0x401/0x14c0
 drv_remove_interface+0x1ed/0x570
 ieee80211_do_stop+0x16ff/0x2220
 ieee80211_stop+0x1af/0x220
 __dev_close_many+0x366/0x6e0
 __dev_change_flags+0x3f5/0x820
 netif_change_flags+0x7c/0x1b0
 do_setlink+0xdd6/0x4670
 rtnl_newlink+0x148e/0x1bd0
 rtnetlink_rcv_msg+0x802/0xc00
 netlink_rcv_skb+0x226/0x4a0
 netlink_unicast+0x7bb/0x940
 netlink_sendmsg+0x813/0xb40
 ____sys_sendmsg+0x9b9/0xa20
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1bd/0x2a0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3ae2b9ce59
Code: Unable to access opcode bytes at 0x7f3ae2b9ce2f.
RSP: 002b:00007f3ae3b17028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3ae2e15fa0 RCX: 00007f3ae2b9ce59
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000009
RBP: 00007f3ae2c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3ae2e16038 R14: 00007f3ae2e15fa0 R15: 00007ffcdfd40eb8
 </TASK>
