INFO: task kworker/u8:1:13 blocked for more than 145 seconds.
      Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:1    state:D stack:22984 pid:13    tgid:13    ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 wg_netns_pre_exit+0x1c/0x1d0
 ops_undo_list+0x187/0x990
 cleanup_net+0x4c5/0x800
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task kworker/u9:5:1090 blocked for more than 146 seconds.
      Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u9:5    state:D stack:23944 pid:1090  tgid:1090  ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 linkwatch_event+0xe/0x60
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.2.661:8059 blocked for more than 146 seconds.
      Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.661       state:D stack:24264 pid:8059  tgid:8059  ppid:5857   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 tun_chr_close+0x3e/0x1c0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa6b718ebe9
RSP: 002b:00007fff22094718 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fa6b73b7da0 RCX: 00007fa6b718ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fa6b73b7da0 R08: 00000000000001ac R09: 0000001922094a0f
R10: 00000000003ffc30 R11: 0000000000000246 R12: 000000000001bc0a
R13: 00007fa6b73b6090 R14: ffffffffffffffff R15: 00007fff22094830
 </TASK>
INFO: task syz.1.664:8076 blocked for more than 146 seconds.
      Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.664       state:D stack:28880 pid:8076  tgid:8069  ppid:5849   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 __tun_chr_ioctl+0x37a/0x1df0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01b878ebe9
RSP: 002b:00007f01b69f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f01b89b6180 RCX: 00007f01b878ebe9
RDX: ba98575a95aeb70d RSI: 00000000400454c9 RDI: 0000000000000011
RBP: 00007f01b8811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01b89b6218 R14: 00007f01b89b6180 R15: 00007ffd4ced6b38
 </TASK>
INFO: task syz.0.666:8081 blocked for more than 146 seconds.
      Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.666       state:D stack:24776 pid:8081  tgid:8080  ppid:5854   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1360
 __tun_chr_ioctl+0x37a/0x1df0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89ce18ebe9
RSP: 002b:00007f89cc3f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f89ce3b5fa0 RCX: 00007f89ce18ebe9
RDX: 0000000000000001 RSI: 00000000400454cb RDI: 0000000000000003
RBP: 00007f89ce211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f89ce3b6038 R14: 00007f89ce3b5fa0 R15: 00007fffe537b6f8
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:1/13:
 #0: ffff88801b2f7148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90000107bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f525950 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: wg_netns_pre_exit+0x1c/0x1d0
1 lock held by khungtaskd/34:
 #0: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u9:5/1090:
 #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900071e7bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
2 locks held by getty/5674:
 #0: ffff888109b820a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by kworker/u8:3/5869:
 #0: ffff88802662a948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90003adfbc0 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x19/0x30
3 locks held by kworker/0:4/5885:
 #0: ffff88801a482148 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90003bbfbc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: reg_check_chans_work+0x95/0xf30
1 lock held by syz.2.661/8059:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
3 locks held by syz.1.664/8071:
1 lock held by syz.1.664/8076:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x37a/0x1df0
1 lock held by syz.0.666/8081:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x37a/0x1df0
1 lock held by syz-executor/8084:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8088:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8091:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8100:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8105:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8108:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8116:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8121:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0
1 lock held by syz-executor/8126:
 #0: ffffffff8f5327c8 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x3b0/0x18b0

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #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+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 8071 Comm: syz.1.664 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-dirty #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:hrtimer_interrupt+0x620/0xaa0
Code: 24 18 42 0f b6 04 30 84 c0 0f 85 c9 01 00 00 80 63 4c fd 48 89 df 48 8b 74 24 30 e8 2a 40 cc 09 4c 89 ef 31 f6 e8 40 c8 03 00 <41> 89 c4 31 ff 89 c6 e8 e4 fd 11 00 45 85 e4 0f 84 4f 02 00 00 48
RSP: 0018:ffffc90000006a48 EFLAGS: 00000092
RAX: 0000000000000000 RBX: ffff88804b027a80 RCX: ffff888026460000
RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88804b027ad4 R08: 0000000000000000 R09: ffffffff81adfebe
R10: 0000000000000003 R11: ffffffff81703490 R12: ffff88804b027ae0
R13: 0000003ed429c207 R14: dffffc0000000000 R15: 0000000000000008
FS:  00007f01b952c6c0(0000) GS:ffff8880b862a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c08617f778 CR3: 000000011f99a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000082
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__pi___x86_indirect_thunk_r11+0x0/0x20
Code: 00 00 00 0f 1f 80 00 00 00 00 e8 01 00 00 00 cc 4c 89 14 24 e9 d1 0a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 <e8> 01 00 00 00 cc 4c 89 1c 24 c3 cc cc cc cc 66 2e 0f 1f 84 00 00
RSP: 0018:ffffc90000006c60 EFLAGS: 00000282
RAX: ffffffff8aca5a3b RBX: ffffc90000006d20 RCX: ab6b15b4082f5c00
RDX: 0000000000000001 RSI: ffffffff8aca5a3b RDI: ffffc90000006d20
RBP: ffffc90000006cf0 R08: ffffc900000073f0 R09: 0000000000000000
R10: ffffc90000006cb8 R11: ffffffff81ac34b0 R12: ffff888026460000
R13: ffffc90000007280 R14: ffffffff81ac34b0 R15: ffffc90000006c68
 </IRQ>
 <TASK>
 </TASK>
