INFO: task syz.0.17:4473 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17        state:D stack:26720 pid:4473  ppid:4401   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
 trace_array_get kernel/trace/trace.c:461 [inline]
 tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3677 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3834
 do_filp_open+0x1ee/0x420 fs/namei.c:3861
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f67b299e159
RSP: 002b:00007ffd5d746148 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f67b2c25fa0 RCX: 00007f67b299e159
RDX: 0000000000040880 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f67b2a3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f67b2c25fac R14: 00007f67b2c25fa0 R15: 00007f67b2c25fa0
 </TASK>
INFO: task syz.3.20:4475 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20        state:D stack:26736 pid:4475  ppid:4412   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
 trace_array_get kernel/trace/trace.c:461 [inline]
 tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3677 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3834
 do_filp_open+0x1ee/0x420 fs/namei.c:3861
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f15a399e159
RSP: 002b:00007fff9d54fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f15a3c25fa0 RCX: 00007f15a399e159
RDX: 0000000000040880 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f15a3a3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15a3c25fac R14: 00007f15a3c25fa0 R15: 00007f15a3c25fa0
 </TASK>
INFO: task syz.2.19:4501 blocked for more than 145 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.19        state:D stack:26736 pid:4501  ppid:4407   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
 trace_array_get kernel/trace/trace.c:461 [inline]
 tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3677 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3834
 do_filp_open+0x1ee/0x420 fs/namei.c:3861
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fedd739e159
RSP: 002b:00007ffe38943b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fedd7625fa0 RCX: 00007fedd739e159
RDX: 0000000000040880 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007fedd743503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fedd7625fac R14: 00007fedd7625fa0 R15: 00007fedd7625fa0
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8cb2e5b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xef0 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
 #0: 
ffffffff8cb2edd0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xef0 kernel/rcu/tasks.h:517
3 locks held by kworker/1:0/22:
 #0: ffff88802ebb2138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #1: ffffc900001c7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #2: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1500 net/ipv6/addrconf.c:4138
1 lock held by khungtaskd/28:
 #0: ffffffff8cb2dc20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #0: ffffffff8cb2dc20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #0: ffffffff8cb2dc20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6527
2 locks held by kworker/u4:3/47:
1 lock held by dhcpcd/3932:
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x11e/0x6f0 net/netlink/af_netlink.c:2310
2 locks held by getty/4034:
 #0: ffff88807f048098 (
&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: 
ffffc9000327b2f0
 (&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x41e/0x1360 drivers/tty/n_tty.c:2198
3 locks held by kworker/0:3/4352:
 #0: 
ffff88802ebb2138
 (
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #1: ffffc90004127d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #2: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1500 net/ipv6/addrconf.c:4138
3 locks held by kworker/u4:7/4356:
 #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #1: ffffc90004167d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #2: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:263
2 locks held by kworker/1:12/4457:
 #0: 
ffff888017472138
 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
 #1: ffffc900038c7d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
7 locks held by syz.1.18/4463:
1 lock held by syz.0.17/4473:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.3.20/4475:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.2.19/4501:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.4.21/4504:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.5.22/4546:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.6.23/4583:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.7.24/4585:
 #0: ffffffff8cb77808 (trace_types_lock
){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.8.25/4607:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.9.26/4608:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz-executor/4610:
 #0: ffffffff8cb338f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
 #0: ffffffff8cb338f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962
1 lock held by syz.0.28/4680:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.3.32/4685:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.4.40/4709:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.2.38/4710:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.5.64/4758:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
3 locks held by kworker/u4:8/4793:
1 lock held by syz.6.71/4794:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.8.82/4846:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.7.81/4847:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.0.104/4878:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.9.98/4880:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz-executor/4921:
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x80d/0xfb0 net/core/rtnetlink.c:6163
3 locks held by syz-executor/4923:
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x80d/0xfb0 net/core/rtnetlink.c:6163
 #1: ffff888076abd3e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x223/0x420 drivers/net/wireguard/device.c:49
 #2: ffffffff8cb338f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
 #2: ffffffff8cb338f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962
1 lock held by syz.3.123/4936:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
1 lock held by syz.2.124/4939:
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
 #0: ffffffff8cb77808 (trace_types_lock){+.+.}-{3:3}, at: tracing_buffers_open+0x7f/0x4b0 kernel/trace/trace.c:8161
2 locks held by syz-executor/4979:
 #0: ffffffff8dd4fa90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x324/0x5b0 net/core/net_namespace.c:504
 #1: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x29c/0x7a0 net/ipv4/ip_tunnel.c:1103
1 lock held by syz-executor/4983:
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
 #0: ffffffff8dd5c928 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x80d/0xfb0 net/core/rtnetlink.c:6163

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3e6/0x460 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xf0e/0xf50 kernel/hung_task.c:377
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4463 Comm: syz.1.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
RIP: 0010:io_serial_out+0x78/0xb0 drivers/tty/serial/8250/8250_port.c:468
Code: fc fa fc 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 e0 39 4c fd 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d c3 44 89 f9 80 e1 07 38 c1 7c aa 4c 89 ff
RSP: 0018:ffffc90003877590 EFLAGS: 00000002
RAX: 000000000000005b RBX: 000000000000005b RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 0000000000000000 RDI: 0000000000000020
RBP: 00000000000003f8 R08: ffff8880234e0237 R09: 1ffff1100469c046
R10: dffffc0000000000 R11: ffffed100469c047 R12: dffffc0000000000
R13: ffffffff96c5ce01 R14: ffffffff96fa15e0 R15: 0000000000000000
FS:  0000555558b79500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4b69ded0 CR3: 00000000267e7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 serial_out drivers/tty/serial/8250/8250.h:122 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:-1 [inline]
 serial8250_console_write+0x11ed/0x18b0 drivers/tty/serial/8250/8250_port.c:3479
 call_console_driver kernel/printk/printk.c:1977 [inline]
 console_emit_next_record+0x795/0xb50 kernel/printk/printk.c:2777
 console_flush_all kernel/printk/printk.c:-1 [inline]
 console_unlock+0x223/0x630 kernel/printk/printk.c:2906
 vprintk_emit+0x4b3/0x6a0 kernel/printk/printk.c:2303
 _printk+0xda/0x130 kernel/printk/printk.c:2328
 event_subsystem_dir kernel/trace/trace_events.c:2490 [inline]
 event_create_dir+0xbfe/0xe50 kernel/trace/trace_events.c:2582
 __trace_add_new_event kernel/trace/trace_events.c:2988 [inline]
 __trace_add_event_dirs kernel/trace/trace_events.c:3202 [inline]
 event_trace_add_tracer+0x19b/0x3a0 kernel/trace/trace_events.c:3801
 trace_array_create_dir+0x77/0x120 kernel/trace/trace.c:9431
 trace_array_create+0x724/0xcb0 kernel/trace/trace.c:9489
 instance_mkdir+0xc8/0x120 kernel/trace/trace.c:9524
 tracefs_syscall_mkdir+0xb7/0x110 fs/tracefs/inode.c:87
 vfs_mkdir+0x386/0x570 fs/namei.c:4157
 do_mkdirat+0x1d8/0x440 fs/namei.c:4182
 __do_sys_mkdirat fs/namei.c:4197 [inline]
 __se_sys_mkdirat fs/namei.c:4195 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4195
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa1e499e159
Code: Unable to access opcode bytes at 0x7fa1e499e12f.
RSP: 002b:00007ffe4042cf68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fa1e4c25fa0 RCX: 00007fa1e499e159
RDX: 00000000000001ff RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007fa1e4a3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa1e4c25fac R14: 00007fa1e4c25fa0 R15: 00007fa1e4c25fa0
 </TASK>