INFO: task kworker/0:4:5681 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:4     state:D stack:22968 pid:5681  tgid:5681  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x360
 schedule_preempt_disabled+0x13/0x30
 rwsem_down_read_slowpath+0x6ba/0x920
 down_read+0x9c/0x330
 wg_noise_handshake_consume_response+0x2d1/0xbd0
 wg_packet_handshake_receive_worker+0x6b8/0x10c0
 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: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 36 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: 5429 Comm: sshd 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 c0 d6 35 0a cc 89 f6 31 d2 e9 86 8e 7a 03 66 0f 1f 44 00
RSP: 0018:ffffc90000a07710 EFLAGS: 00000046
RAX: 000000000000000f RBX: ffff88823c623c80 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000000f RDI: 0000000000000838
RBP: ffffc90000a077e0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: ffffffff8173f530 R12: ffffffff8173f530
R13: 1ffff110478c4799 R14: 0000000000000000 R15: ffff88823c623ccc
FS:  00007ff6c4b96800(0000) GS:ffff8882a927b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe83b3bcc0 CR3: 0000000111bba000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x44e/0x630
 __hrtimer_rearm_deferred+0x26c/0x420
 irqentry_exit+0x8b7/0x8f0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_is_watching+0x55/0xb0
Code: c7 27 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 9c 60 86 00 48 c7 c3 d8 88 3b 93 49 03 1e 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 34 8b 03 65 ff 0d e9 65 8f 11 74 11 83 e0
RSP: 0018:ffffc90000a07938 EFLAGS: 00000a06
RAX: 1ffff110478c671b RBX: ffff88823c6338d8 RCX: 0000000000000103
RDX: ffffc90000a07a01 RSI: ffffffff8c291100 RDI: ffffffff8c2910c0
RBP: 1ffffffff21fa301 R08: ffffc90003e2f370 R09: 0000000000000000
R10: ffffc90000a07ab8 R11: fffff52000140f59 R12: ffffc90003e28000
R13: ffffffff8176a21f R14: ffffffff8e27c7d8 R15: dffffc0000000000
 lock_release+0x4b/0x3c0
 unwind_next_frame+0x1baa/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x2b8/0x650
 dst_alloc+0x105/0x170
 ip_route_output_key_hash_rcu+0x14ac/0x2720
 ip_route_output_key_hash+0x18d/0x2a0
 ip_route_output_flow+0x2a/0x150
 ip_route_me_harder+0x762/0xfe0
 synproxy_send_tcp+0x347/0x670
 synproxy_send_client_synack+0x89b/0xde0
 nft_synproxy_eval_v4+0x37b/0x530
 nft_synproxy_do_eval+0x335/0x550
 nft_do_chain+0x48d/0x1b10
 nft_do_chain_inet+0x360/0x4b0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x21f/0x3c0
 NF_HOOK+0x336/0x3c0
 process_backlog+0xa34/0x1860
 __napi_poll+0xaa/0x330
 net_rx_action+0x61d/0xf50
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 9d ba f7 f5 f7 c3 00 02 00 00 74 05 e8 10 77 23 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e4 d1 e8 f5 65 8b 05 2d a4 8f 07 85 c0 74 18 5b 41 5e e9 91 48
RSP: 0018:ffffc90003e2f2b8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000286 RCX: 0000000000000003
RDX: 0000000000000000 RSI: ffffffff8c291100 RDI: 0000000000000001
RBP: 0000000000000002 R08: ffffffff903114f7 R09: 1ffffffff206229e
R10: dffffc0000000000 R11: fffffbfff206229f R12: 0000000000000000
R13: ffff88816aece000 R14: ffffffff9a67aae8 R15: 0000000000000000
 debug_check_no_obj_freed+0x39e/0x450
 __free_frozen_pages+0x5a1/0xd20
 __mmdrop+0xf3/0x510
 finish_task_switch+0x618/0xbc0
 __schedule+0x17e1/0x56c0
 schedule+0x164/0x360
 schedule_hrtimeout_range_clock+0x1f2/0x330
 poll_schedule_timeout+0xd0/0x1a0
 do_sys_poll+0x80a/0x1110
 __se_sys_ppoll+0x209/0x2b0
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6c4719ad5
Code: 85 d2 74 0d 0f 10 02 48 8d 54 24 20 0f 11 44 24 20 64 8b 04 25 18 00 00 00 85 c0 75 27 41 b8 08 00 00 00 b8 0f 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 75 48 8b 15 24 73 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc4c136930 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055bc21d1ac90 RCX: 00007ff6c4719ad5
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055bc21d1b170
RBP: 0000000000000064 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffc4c136ae8 R11: 0000000000000246 R12: 000055bc21d1b170
R13: 00007ffc4c136ae8 R14: 0000000000000002 R15: 000055bc21d1b15c
 </TASK>
