rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P12527/1:b..l
rcu: 	(detected by 1, t=10506 jiffies, g=75821, q=249 ncpus=2)
task:syz-executor    state:R  running task     stack:21752 pid:12527 tgid:12527 ppid:12526  task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x8f0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x221/0x350
Code: ff ff ff e8 51 fd 2d 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 db 07 ca 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 80 00 31 0a cc 48 8d 3d e8 1d b8
RSP: 0018:ffffc900038ee9e0 EFLAGS: 00000282
RAX: f47b454d67aec800 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000aefd6819 RSI: ffffffff8e4adbba RDI: ffffffff8c4bbe80
RBP: ffffffff8177827f R08: ffffffff8177827f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: 0000000000000002
R13: ffffffff8eb59c60 R14: 0000000000000000 R15: 0000000000000246
 unwind_next_frame+0xac/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __reset_page_owner+0x71/0x1f0
 __free_frozen_pages+0xc1e/0xd10
 __slab_free+0x274/0x2c0
 qlist_free_all+0x99/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x2a0/0x5f0
 __kernfs_new_node+0xe6/0x980
 kernfs_new_node+0xea/0x140
 __kernfs_create_file+0x4b/0x2e0
 sysfs_add_file_mode_ns+0x237/0x300
 sysfs_merge_group+0x183/0x320
 dpm_sysfs_add+0xd2/0x270
 device_add+0x4ca/0xb80
 device_create+0x269/0x300
 mac80211_hwsim_new_radio+0x3f6/0x5680
 hwsim_new_radio_nl+0xd8b/0xf90
 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
 sock_sendmsg_nosec+0x13a/0x180
 __sys_sendto+0x408/0x5a0
 __x64_sys_sendto+0xde/0x100
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f27af15e90e
RSP: 002b:00007ffce9378078 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000055556be9e500 RCX: 00007f27af15e90e
RDX: 0000000000000024 RSI: 00007f27aff54670 RDI: 0000000000000003
RBP: 0000000000000001 R08: 00007ffce93780f4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f27aff54670 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g75821 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=24841
rcu: rcu_preempt kthread starved for 10506 jiffies! g75821 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:27736 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_timeout+0x152/0x2c0
 rcu_gp_fqs_loop+0x30c/0x11f0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5761 Comm: kworker/u9:5 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:lock_acquire+0xd4/0x350
Code: 9c 0b 00 00 00 0f 85 aa 00 00 00 4c 89 74 24 10 4d 89 fe 9c 41 5f fa 48 c7 c7 83 30 24 8e e8 83 1c 2e 0a 65 ff 05 ec 4d ca 11 <45> 31 c9 4c 89 7c 24 08 41 f7 c7 00 02 00 00 41 0f 94 c1 4c 89 ef
RSP: 0018:ffffc90000007c60 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000010201
RDX: 0000000000000000 RSI: ffffffff8e243083 RDI: ffffffff8c4bbe80
RBP: ffffffff89dc32d2 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff89dc3210 R12: 0000000000000000
R13: ffff88801d9832c0 R14: 0000000000000001 R15: 0000000000000046
FS:  0000000000000000(0000) GS:ffff88818d954000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c35c9fd CR3: 00000001be106000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 _raw_spin_lock+0x2e/0x40
 advance_sched+0xc2/0xc80
 __hrtimer_run_queues+0x3bc/0xa10
 hrtimer_interrupt+0x448/0x910
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x221/0x350
Code: ff ff ff e8 51 fd 2d 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 db 07 ca 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 80 00 31 0a cc 48 8d 3d e8 1d b8
RSP: 0018:ffffc9000640f860 EFLAGS: 00000286
RAX: b125a870c3049300 RBX: 0000000000000000 RCX: 0000000080000200
RDX: 0000000000030000 RSI: ffffffff8e4adbba RDI: ffffffff8c4bbe80
RBP: ffffffff89988bd1 R08: ffffc9000640f680 R09: 0000000000000020
R10: dffffc0000000000 R11: ffffffff81a324e0 R12: 0000000000000000
R13: ffff888121038e60 R14: 0000000000000001 R15: 0000000000000246
 napi_skb_cache_get+0x169/0x7d0
 __alloc_skb+0x19d/0x7a0
 wg_socket_send_buffer_to_peer+0x38/0x1c0
 wg_packet_handshake_send_worker+0x204/0x370
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
